The main research interests of the laboratory lie in the studies of electro-magnetic wave phenomena and applications in millimeter and optical wave engineering. Such as: wave propagation, scattering and radiation in various media; new numerical and analytical methods for analyzing the wave phenomena; new antenna and guiding structures for applications in electronic engineering.

　　　　 The main research activities in recent years of this laboratory are as follows:

1.  Nonuniform dielectric waveguide and its applications.

　　　　　 Open dielectric waveguides have become increasingly important in the areas of integrated optics and millimeter-wave integrated circuits. An integrated circuit may consist of various waveguiding components, which are usually interconnected by gradual transition waveguides, in order to reduce the scattering loss. Generally speaking the transition waveguides, such as a bend or curved waveguide, a taper or a junction, a transition or a coupling structure may be regarded as a nonuniform waveguide. The purpose of this investigation is to get new knowledge and better understanding for different nonuniform waveguides about the variety of phenomena associated with the leakage of guided energy and leakage-related resonate effects under appropriate circumstances and to quantify the scattering characteristics of various types of nonuniform waveguides as well as to suggest some useful guidelines for design of nonuniform dielectric structures in integrated circuits.

2. Omnidirectional antennas and other new antennas for millimeter-wave Applications.

　　　　　 The millimeter-wave region is increasingly utilized for various systems. It has generated a need for developing new types of antennas, including omnidirectional antennas to suit the various constraints imposed by these systems. The purpose of this investigation is to create some new millimeter-wave omnidirectional antenna and leaky wave antenna structures as well as to propose some effective analysis methods to calculate the performances of the new antennas. As a result, the new type antennas can be conveniently designed and manufactured to meet the practical requirements of different systems.

3.  Dielectric periodic structure and its applications.

　　　　　 The great demand for wireless communication systems is pushing designers toward mobile communication systems within small-size transmission areas. That has spurred on a research for highly integrated, small and inexpensive components that can support this kind of infrastructure. Both in millimeter-wave and optic integrated circuits of such systems, the dielectric periodic structure has demonstrated its considerable value; and it has been widely used in filters, couplers and traveling wave antennas. The purpose of this investigation is to develop an accurate but simple approach to analyze the scattering and radiation characteristics of the dielectric periodic structures so that the design procedure of the related elements in the circuits and systems becomes convenient and easy.

4.  Engineerlized method for electromagnetic field problems.

　　　　　 Different kinds of guiding structures play an important role in advanced electrical and communication systems. The success of these systems depends strongly on the deep understanding of the propagation and scattering properties of the guiding structures. However, in practical case, often the structures have rather complicated geometry dimensions and dielectric distributions. Therefore, sometimes it could be very difficult to solve this problem with field method. The purpose of this investigation is to develop some engineerlized method such as modified multimode network method, improved perturbation method, generalized transverse resonance method, impedance transform technique and simplified mode-matching method etc., to solve the eigenvalue problems for different guiding structures so that the design procedure of the systems can be greatly simplified with getting twice the results with half the effort.

5.  Design and analysis of beamforming network of communication satellite.

　　　　　 For frequency below X-band, a satellite beamforming network (BFN) using waveguide technology is not acceptable for space applications due to its heavy weight, volume and complexity. Recently, BFNs using rectangular coaxial line technology have been applied for the feed systems of C-band satellites. By using this technology, very compact, lightweight and low loss BFNs can be built. However, there is no analytical solution for the rectangular coaxial waveguide. The purpose of this investigation is to create a new approach for the scattering analysis of the rectangular coaxial line discontinuities and to provide effective and powerful CAD software for practical use in the BFN design. It is demonstrated theoretically and experimentally that the new approach has the generality of the finite element method and the simplicity of the multimode network method while retaining the high accuracy of the mode-matching method.

6.  Edge-element method and its applications.

　　　　　 The functional formulation with full magnetic vector is widely used to rigorously evaluate propagation problems of different complicated guiding structures filled with isotropic or anisotropic materials. The most serious problem associate with this approach is the appearance of the spurious solutions. It is verified by some authors that the edge-element method is one of the most effective ways to eliminate the spurious solutions. However, comparison with the conventional finite element method, the edge-element method is not so mature and perfect either in mathematics or in the practice. The purpose of this investigation is to bring up the criterions for space construction of the edge-element and to propose new efficient high-order mixed edge-element structure as well as to establish smart division techniques for practical applications in computations of electromagnetic field problem.

7. Theoretical and experimental investigations on leaky wave mechanism and radiation characteristics of dielectric guiding structures

In this research the leaky wave characteristics of dielectric waveguides are theoretically and experimentally investigated; emphasis is lay on the study of the physical mechanism of the leaky wave phenomenon. Based on thoroughly understanding of the leaky mechanism and correctly control of the leakage, guidelines for designing of new and efficient leaky wave antennas are scientifically proposed. Also, different methods for suppressing the interferences between the integrated circuits caused by leaky effect are effectively developed. New leaky wave antennas that are the hybrid structure of NRD guide and microstrip line are presented.

Current Research Projects:

　　　　 The main research projects undertaking in the laboratory are as follows:

1. Theoretical and experimental investigations on leaky wave characteristics of dielectric guiding structures. (Supported by the National Natural Science Foundation of China)

2. The investigation on radiation characteristics of the surface wave guiding　　 structures. (Supported by the National Natural Science Foundation of China)

3. Optical grating and its applications. (Supported by the National Natural Science

　　 Foundation of China)

4.  Hall-Effect measurement of semiconductor with contact less microwave techniques. (Supported by the National Natural Science Foundation of China)

5.  Theoretical and experimental investigation on the determination of semiconductor property parameters. (Supported by the State Education Commission)

6.  The investigation on electromagnetic coupling between the patch/dipole and　  the transmission line and mutual coupling among the elements of microstrip array. (Supported by the National Defense Technique Council)

7.  The investigation on radiation and EMC analysis for aircraft with many air　　  borne antennas on it. (Supported by the National Defense Technique Council)

8.  Wavelet and its application in scattering and inverse scattering analysis.　　  (Supported by the National Defense Technique Council)

9.  Analysis and design of Active Integrated Antennas and microstrip antennas. (Supported by the Ministry of Information Industry of  China )

10. Microwave passive and active devices analysis and design. (Supported by the Ministry of Information Industry of  China )

11.　 Investigations on scattering and radiation characteristics of electrically large objects. (Supported by the Anhui Natural Science Foundation)

Biography:

Professor Shanjia Xu

Shanjia Xu was born in Zhejing, China on July 9, 1939. He graduated from the university of Science and Technology of China (USTC) in 1965. Since then he has been with the same university. He was promoted directly from Lecturer to Professor and became associate chairman of the Department in 1986. From 1994 to 1999 he was the vice-present of High Technical College and from 1993 to 1999 he was the chairman of the Department of Electronic Engineering and Information Science. He was the vice-director of Academic Committee of USTC from 1993 to 2000.

　　　  Prof. Xu is a senior member of IEEE and the vice-director of the Chinese MTT Society. He is the Sub-Associate Editor of IEEE Microwave and Guided Wave Letters and vice director of the Editor Committee of Journal of University of Science and Technology of China as well as a standing member of the Editorial Board of the Journal of China Institute of Communications. Also, he is on the Editorial Board of IEEE Trans. on Microwave Theory and Techniques, the Progress in Natural Sciences, the Journal of Infrared and Millimetre Waves, the Journal of Electronics and Information, the Chinese Journal of Radio Science and the Journal of the Microwave, etc. During 1983-1986 as a Visiting Scholar he worked at the Polytechnic Institute of New York (Polytechnic University) U.S.A. From September 1991 to February 1992 and from March to August 1993 he was a guest scientist and visiting professor at the Wurzburg University, in Wurzburg, Germany. From June to December 1998 and July to December 2000, he was a full professor at the Research Institute of Electrical Communication, Tohoku University, in Sendai, Japan. Also, he was a visiting professor or an academic visitor at several universities in the Unite States, Canada, Japan, Germany, Korea and Hong Kong. He was invited to be as a General Chairman of International Conference and a Chairman or member of the TPC and International Adviser Committee, an invited speaker and session chairman of many International Symposia.

　　　  Prof. Xu has been teaching many courses for more than 35 years for graduate or/and under graduate students. Such as: Foundation for Microwave Engineering, Microwave Network, Microwave Measurements, Microwave Components and Design, Millimetre Wave Transmission Structures, Theory of Dielectric Waveguides and Periodic Structures, and Numerical Method for Electromagnetic Fields.

　　　  Prof. Xu has been engaged in research in the fields of microwave, millimeter and optical wave theory and techniques and has been participating in many research programs in cooperation with both international and domestic institutes and industrial laboratories. He received the first award for the natural science given by the Chinese Academy of Sciences; the first award for science and technology given by the Kwang-Hua Science and Technology Foundation; the second and the third award for the science and technology advances given by the Chinese Academy of Sciences. He has published over 330 papers in variety of academic Journals and Conference Proceedings. His research interests are in the areas of nonuniform dielectric waveguides and applications, numerical techniques in electromagnetic and millimeter wave technology. His biography was listed in Who's Who in the world published in the U.S.A. and in the Dictionary of International Biography published in U.K.

Professor Yunsheng Xu

　　　  Dr. Yun-Sheng Xu was born in Jiangsu, P. R. China, on Nov.11, 1961. He received BS and MS degrees Engineering from the University of Science and Technology of China (USTC), in 1982 and 1984, respectively, and Ph.D. degree in Engineering from the Technishe Universitaet Hamburg-Harburg, Germany, in 1993.

　　　  From 1984-1988 he was with the Department of Electronic Engineering and Information Science at the USTC as an assistant and later a lecturer. Since 1994, he has been again with the same Department, where he is now a Professor and vice chairman of the Department. His current research interests are in the areas of the electromagnetic wave scattering and radiation, numerical techniques, and planar circuits.

Associate Professor Qi Zhu

　　　  Dr. Zhu Qi was born in Anhui province, P. R. China, in January, 1968. He received the BS and MS degrees both in applied physics from the Hefei University of Technology in 1989 and 1992, respectively, and Ph.D. degree in aircraft design from Nanjing University of Aeronautics and Astronautics in 1995. He has joined the faculty of the Department of Electronic Engineering and Information Science of USTC as a postdoctoral since 1996.

　　　  During the period of Ph.D. program, his work was mainly concentrated on the characteristic analysis of the airborne antennas, and EMC between these airborne antennas. All these works were supported by the Nanjing Electronic Institution, and Nanchang Airplane-manufacture Corporation. He has also done some research work on the design of the radomes for the z-8, z-9 helicopter for the navy of P. R. China. His current research interests include computational Electromagnetics, design of MIC/MMIC, scattering and propagation analysis.

Current Publications

International Scientific Journals

[1]　　　　　　 Xu Shanjia, Liu Jian and Mizuno Koji, "Dispersion Analysis of Birefringent Dielectric Grating Structure for Application in Pressure and Temperature Measurements", International Journal of Infrared and Millimeter Waves, Vol.22, No.3, pp.407-420, 2001.

[2]　　　　　　 Xu Shanjia, Liu Jian and Mizuno Koji, "Numerical Analysis for the Transmission Characteristics of Different Kinds of Optical Fiber Gratings", International Journal of Infrared and Millimeter Waves, Vol.22, No.2, pp.315-328, 2001.

[3]　　　　　　 Xu Shanjia and Jing Hengzhen, "Analysis of Dispersion Characteristics for a Circular Dielectric Rod Waveguide with Periodic Corrugations", International Journal of Infrared and Millimeter Waves, Vol.22, No.7, 2001.

[4]　　　　　　 Xiangyin Zeng, Kwaiman Luk and Shanjia Xu, "A Novel Leaky NRD Guide with a Double-Layer Dielectric Slab", IEEE Trans. on MTT, Vol.MTT-49, No.4, pp.584-588, 2001.

[5]　　　　　　 Yang Li and Xu Shanjia, "Analysis of Absorption Characteristics of Conductor-Grounded Lossy Dielectric Periodic Structures by Oblique Incidence", Chinese Journal of Electronics, Vol.10, No.3, pp.313-317, 2001.

[6]　　　　　　 Mao Kaiyu and Xu Shanjia, "Transmission Characteristics of Curved Dielectric Waveguides with Arbitrarily Transverse Profiles", International Journal of Infrared and Millimeter Waves, Vol.22, No.12, 2001.

[7]　　　　　　 Hiroyo Ogawa and Shanjia Xu, " Asia-Pacific Abstracts ---- Paper from Journals Published in Australia, India, Korea, China and Japan in 2000 ", IEEE Microwave & Guided Wave Letters, Vol.13, 2001.

[8]　　　　　　 Liu Falin and Xu Shanjia, "E-plane Waveguide Filters with Partially Filled Dielectric Dielectrics for Wide Bandwidth", Microwave and Optical Technology Letters, Vol.31, No.3, pp.175-177, 2001.

[9]　　　　　　 Zeng Xiangyin and Xu Shanjia, "Noteworthy Trap in Using the EDC Method for Solving Dielectric Waveguide Problems", International Journal of Infrared and Millimeter Waves, Vol.21, No.3, pp.437-446, 2000.

[10]　　　　  Liu Falin, Xu Shanjia and Sheng Yijian, "An Alternate Method for the Analysis of a Waveguide-Loaded Cavity", Microwave and Optical Technology Letters, Vol.25, No.4, pp.283-285, 2000.

[11]　　　　  Lee M.T., Luk K.M., Xu S.J. and Yung E.K.N., "Leaky Wave Antenna Based on Image NRD Guide with Staircase-Shaped Dielectric Slab", IEE Electronics Letters, Vol.36, No.13, pp.1102-1103, 2000.

[12]　　　　  Xu Shanjia and Jia Dongyan, "3-D High-Order Edge-Element Analysis of 3-D Discontinuity Problems in Guiding Wave Structures", International Journal of Infrared and Millimeter Waves, Vol.21, No.4, pp.603-620, 2000.

[13]　　　　  Mao Kaiyu and Xu Shanjia, "An Alternative Method to Analyze Field Distribution in Curved Dielectric Waveguides", International Journal of Infrared and Millimeter Waves, Vol.21, No.8, pp.1321-1330, 2000.

[14]　　　　  Yang Li and Xu Shanjia, "Scattering Analysis of Dielectric Periodic Structures by an Oblique Incidence", International Journal of Infrared and Millimeter Waves, Vol.21, No.11, pp.1807-1823, 2000.

[15]　　　　  Yang Li and Xu Shanjia, "Multimode Network Analysis of Absorption Characteristics of Lossy Dielectric Periodic Structures" International Journal of Infrared and Millimeter Waves, Vol.21, No.10, pp.1723-1735, 2000.

[16]　　　　  Wei Choungyu, Xu Shanjia and Wang Dongjin, "A New Method for Determining the Location and Length of a Thin Cylindrical Target with Range Difference of a Multistatic Radar System", Journal of Electronics, Vol.17, No.2, pp.139-145, 2000.

[17]　　　　  Wei Choungyu, Xu Shanjia and Wang Dongjin, "Analysis of Target Tracking Based on Range Difference Measurement of Multistatic Radar System", Journal of Electronics, Vol.17, No.4, pp.297-303, 2000.

[18]　　　　  Hiroyo Ogawa and Shanjia Xu, " Asia-Pacific Abstracts ---- Paper from Journals Published in Australia, India, Korea, China and Japan in 1999 ", IEEE Microwave & Guided Wave Letters, Vol.12, pp.550-602, 2000.

[19]　　　　  Xu Shanjia, Liu Jian, Y. Yasumoto and K. S. Chiang, "Effect of Radiation on Transmission of Quasi-Periodic Multi-Layer Dielectric Gratings", International Journal of Infrared and Millimeter Waves, Vol.20, No.4, pp.681-698, 1999.

[20]　　　　  K. M. Luk, X. Y. Zeng and S. J. Xu, " Spectral Domain Green's Function of Magnetic Type for NRD Guides and H-guide", IEEE Trans. on MTT, Vol.MTT-47, No.10, pp.1975-1981, 1999.

[21]　　　　  Jiao Dan, Xu Shanjia and Wu Xianliang, "New Method for Natural Frequency Extraction", Progress in Natural Science, Vol.9, No.7, pp. 545- 552, 1999.

[22]　　　　  Zeng Xiangyin, Xu Shanjia, T. Yoneyama, K. M. Luk and Ke Wu, "A Systematic Investigation on Leaky Characteristics for NRD Guide with Arbitrary Profile of Cross Section", International Journal of Infrared and Millimeter Waves, Vol.20, No.3, pp.491-504, 1999.

[23]　　　　  Yin Chengyou, Xu Shanjia and Wang Dongjin, "State Estimation of Short Range Target with Multisensors", IEE Proceedings on Radar Navigation, Vol.146, No.1, pp.8-16, 1999.

[24]　　　　  Yin Chengyou, Xu Shanjia and Wang Dongjin, "Implementation and Performance Analysis of Accurate Localization of Short Range Targets Based on Multisensor System", Chinese Journal of Aeronautics, Vol.12, No.2, pp93-99, 1999.

[25]　　　　  Y.-S. Xu and H.-M. Chen, “Higher-Order Discretized Boundary Conditions at Edges for TE Waves,” IEE Proc. Microw. Antennas Propag., Vol. 146, no. 5, pp. 342-348, 1999.

[26]　　　　  Y.-S. Xu and H.-M. Chen, “Validity of the Measured Equation of Invariance,” IEEE Trans. on AP, Vol. AP-47, No.12, pp.1814-1819, 1999.

[27]　　　　  Hiroyo Ogawa and Shanjia Xu, " Asia-Pacific Abstracts ---- Paper from Journals Published in Australia, India, Korea, China and Japan in 1998 ", IEEE Microwave & Guided Wave Letters, Vol.12, pp.556-607, 1999.

[28]　　　　  Xu Shanjia, Zeng Xiangyin, Ke Wu and K. M. Luk, "Leaky-Wave Characteristics of Trapezoidally Shaped NRD-Guide Suitable for Design of Millimeter-Wave Antenna", IEEE Trans. on MTT, Vol.MTT-46, No.12, pp.2450-2456, 1998.

[29]　　　　  Xu Shanjia and Yang Li and T. Yoneyama, "A Systematic Investigation on Diffraction Characteristics of Dielectric Periodic Structure with Arbitrary Grating Profiles", International Journal of Infrared and Millimeter Waves, Vol.19, No.10, pp.1411-1424, 1998.

[30]　　　　  Xu Shanjia and Yang Li, "Frequency Selective Characteristics of Dielectric Periodic Structure for millimeter Wave Applications", International Journal of Infrared and Millimeter Waves, Vol.19, No.3, pp.475-492, 1998.

[31]　　　　  Xu Shanjia and Yang Li, "Effect of Dielectric Groove Profiles on Reflection Characteristics of Millimeter Wave Frequency Selective Surfaces" International Journal of Infrared and Millimeter Waves, Vol.19, No.4, pp.705-716, 1998.

[32]　　　　  Zeng Xiangyin, Luk K.M. and Xu Shanjia, "Efficient and Simple Analytical Expression for Slot Antenna Problem", Electronics Letters, Vol.34, No.11, May, pp.1044-1045, 1998

[33]　　　　  Hiroyo Ogawa and Shanjia Xu, "Asia-Pacific Abstracts ---- Paper from Journals Published in Australia, India, Korea, China and Japan in 1997 ", IEEE Microwave & Guided Wave Letters, Vol.12, pp.435-485, 1998.

[34]　　　　  Xu Shanjia and Sheng Xinquing, "Coupling of Edge-Element and Mode-Matching for Multistep Dielectric Discontinuity in Guiding Structures", IEEE Trans. on MTT, Vol.MTT-45, No.2, pp.284-287, 1997.

[35]　　　　  Sheng Xinquing and Xu Shanjia, "An Efficient High-Order Mixed Edge Rectangular Element Method for Lossy Anisotropic Dielectric Waveguides", IEEE Trans. on MTT, Vol.MTT-45, No.7, pp.1009-1013, 1997.

[36]　　　　  Xu Shanjia and Zhang Lijun, "A New Method for Reflection and Radiation Analysis of Dielectric Rod Antenna Excited with the HE Mode", International Journal of Infrared and Millimeter Waves, Vol.18, No.5, pp.1119-1130, 1997.

[37]　　　　  Xu Shanjia and Zheng Fenghua, " Multimode Network Analysis for Dielectric Leaky-Wave Antennas Consisting of Multilayer Periodic Structure with Arbitrary Dielectric Distributions", International Journal of Infrared and Millimeter Waves, Vol.18, No.6, 1223-1240, 1997.

[38]　　　　  Zhu Qi and Xu Shanjia,  "Pattern Analysis of Airborne Dipole Antenna in High-Frequency Region " International Journal of Infrared and Millimeter Waves, Vol.18, No.2, 1997.

[39]　　　　  Yin Chengyou, Xu Shanjia and Wang Dongjin, "An Analysis of the Returned Signal Model in Bistatic Radar Systems", Chinese Journal of Aeronautics, No.2, pp.93-99, 1997.

[40]　　　　  Wu Xianliang, Jiao Dan and Xu Shanjia, "Application of Wavelet Transform for Removing Local High-Frequency Noise From Targets' Late-Time Transient Response", Chinese Journal of Electronics, Vol.6, No.3, pp.82-86, 1997.

[41]　　　　  Hiroyo Ogawa and Shanjia Xu, " Asia-Pacific Abstracts ---- Paper from Journals Published in Australia, India, Korea, China and Japan in 1996 ", IEEE Microwave & Guided Wave Letters, Vol.12, pp.417-465, 1997.

[42]　　　　  Xu Shanjia and Wu Xinzhang, "A Millimeter-Wave Omnidirectional Dielectric Rod Metallic Grating Antenna", IEEE Trans. On AP, Vol. AP-44, No.1, PP.74-79, 1996.

[43]　　　　  Xu Shanjia and Du Kai, " Network Representation and Transverse Resonance for Layered Chirowaveguides", IEEE Trans. on MTT, Vol. MTT-44, No.8, pp.1496-1498, 1996.

[44]　　　　  Thou Ping and Xu Shanjia, "Equivalent Network Analysis of MIC Transmission Lines in the Spectral Domain", International Journal of Infrared and Millimeter Waves, Vol.17, No.6, pp.1083-1094, 1996.

[45]　　　　  Zhang Lijun and Xu Shanjia, "Finite Element Analysis of Planar Dielectric Waveguide Discontinuities", International Journal of Infrared and Millimeter Waves, Vol.17, No.10, pp.1735-1747, 1996.

[46]　　　　  Xu Shanjia, Zhang Yaojing and Yang Jisong, "A New Method for Determining Self-Admittance of a Waveguide Slot Antenna", Chinese Journal of Infrared and Millimeter Waves, Vol.14, No.2, pp.91-96, 1996.

[47]　　　　  M. Koshiba and Shanjia Xu, "Asia-Pacific Abstracts --- Paper from Journals Published in Australia, India, Korea, China and Japan in 1995", IEEE Microwave & Guided Wave Letters, Vol.6, pp.450-502, 1996.

[48]　　　　  Xu Shanjia, Wu Xinzhang, Guo Wenjia and Li Zhangjun, "Scattering Characteristics of Rectangular Coaxial Line Discontinuities", IEE Proceedings Microwave, Antennas, Propagation, Vol.142, No.3, pp.257 -264, 1995.

[49]　　　　  Xu Shanjia and S.T. Peng "Reflection Analysis for Planar Surface Antennas with Different Tapering Profiles", International Journal of Infrared and Millimeter Waves, Vol.16, No.12, pp. 2195-2208, 1995.

[50]　　　　  Xu Shanjia and Wang Feng, "Improved Mode-Matching and Network Analysis of E-plane Waveguide Branch Directional Couplers", Journal of Electronics, Vol.12, No.4, pp.378-383, 1995.

[51]　　　　  Xu Shanjia, Sheng Xinqing and Masanori Koshiba,  "A New High-Order Edge-Element Approach", Journal of Infrared and Millimeter Waves, Vol.13, No.4, pp.276-279, 1995.

[52]　　　　  Zhang Lijun and Xu Shanjia, "Edge-Element Analysis of Anisotropic Waveguides with Full Permittivity and Permeability", International Journal of Infrared and Millimeter Waves, Vol.16, No.8, pp.1351-1360, 1995.

[53]　　　　  Wu Xinzhang and Xu Shanjia, "Mode Matching Analysis of the Dielectric Waveguide 3-D Discontinuity Problem", International Journal of Infrared and Millimeter Waves, Vol.16, No.4, pp.839-861, 1995.

[54]　　　　  M. Koshiba and Shanjia Xu, "Asia-Pacific Abstracts --- Paper from Journals Published in Australia, India, Korea, China and Japan in 1994", IEEE Microwave & Guided Wave Letters, Vol.5, pp.460-501, 1995.

International Academic Conferences

[55]　　　　  Mao Kaiyu and Xu Shanjia, "A Simple and Effective Method to Analyze Field Distribution in Curved Dielectric Waveguides", Digest of the 2001 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Boston, U.S.A., July 2001.

[56]　　　　  Yang Li and Xu Shanjia, "Investigation on the Potential Application of Conductor-Grounded Lossy Dielectric Periodic Structures as the Cover of Stealth", Digest of the 2001 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Boston, U.S.A., July 2001.

[57]　　　　  Z. Lou and Y.-S. Xu, “An Improved Method for the Mesh Termination in the Finite-Difference Solution of Scattering Problems,” Digest of the 2001 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Boston, U.S.A., July 2001.

[58]　　　　  Xu Shanjia, Zeng Xiangyin, Wu Ke and K. M. Luk, "Properties of Guided Modes on Open Structures Near the Cutoff Region Using a New Version of Complex Effective Dielectric Constant", (invited paper) Conference Digest of 2001 Asia-Pacific Radio Science Conference, Tokyo, Japan, August, 2001.

[59]　　　　  Xu Shanjia, Zeng Xiangyin, K.M. Luk and Wu Ke, "A Novel Leaky Wave Antenna Based on NRD-Guide with Wedged Cross-Section", (invited paper) Proceedings of International Workshop on Advanced Electromagnetics, Tokyo, Japan, July, 2001.

[60]　　　　  Yuki Yoshida, Zhu Qi, Shigeo Kawasaki, “The Active Integrated Antenna Receiver with a loop Oscillator”, IEICE, Tokyo, Japan, Feb, 2001.

[61]　　　　  Zeng Xiangyin, Xu Shanjia, Ke Wu and K. M. Luk, "Revisiting Guided Wave and Leaky Wave Modal Properties in Near Cutoff Region with the Concept of Complex Effective Dielectric Constant", Digest of the 2000 IEEE MTT-S International Microwave Symposium and Exhibition, Boston, MA, U.S.A., June 2000.

[62]　　　　  Jinbang Tang, Xiangyin, Zeng, Shanjia Xu, and Ke Wu, "Low-loss Millimeter Wave Propagation Characteristics of NRD Guide Surface- Mounted on Planar Substrate for Hybrid Integrated Circuit", Digest of the 2000 IEEE MTT-S International Microwave Symposium and Exhibition, Boston, MA, U.S.A., June 2000.

[63]　　　　  Zeng Xiangyin, Xu Shanjia, Luk Kwai-Man, and Wu Ke, "A New Wedge-Offset NRD Guide Leaky Wave Antenna", Digest of the 2000 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Salt Lake, Utah, U.S.A., July, 2000.

[64]　　　　  M. Li, K. Luk and S. Xu, "Leaky Wave Antenna Based on Asymmetric NRD Guide", Digest of the 2000 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Salt Lake, Utah, U.S.A., July 2000.

[65]　　　　  J. Tang, Q. Shi, X. Zeng, S. Xu and K. Wu, "Dielectric Layered NRD-Guide Surface Mounted on Planar Substrate for Millimeter Wave Circuits", Digest of the SPIE’2000, San Diego, California, USA, August, 2000.

[66]　　　　  Yang Li, Xu Shanjia and Wu Xianliang "Scattering Characteristics of Dielectric Periodic Structures in the Case of Oblique Incidence", Digest of the 2000 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Salt Lake, Utah, U.S.A., July 2000.

[67]　　　　  Zeng Xiangyin, Xu Shanjia, Luk Wu Ke and Kwai-Man, "Introduction of Complex Effective Dielectric Constant to the Analysis of Leakage for Guided Mode Near the Cutoff Region", (invited paper), Proceedings of 3rd Asia-Pacific Engineering Forum on Microwave and Electromagnetic Theory, Fukuoka, Japan, December, 2000.

[68]　　　　  Cheng Junfeng and Xu Shanjia, "Scattering Analysis of Waveguide Loaded with Anisotropic Dielectric Material by 3-D 54-Parameter Edge-Element Method", Proceedings of CJMW'2000, Nanjing, China April 2000.

[69]　　　　  Chen Weidong, Xu Shanjia, Wang Dongjin and Liu Falin, "The Real Time Extraction of Swept Frequency Nonlinearity of MM-Wave LFMCW Radar", Proceedings of the 25th International Conference on Infrared and Millimeter Waves, Beijing, China, September, 2000.

[70]　　　　  Yang Li and Xu Shanjia, "Systematical Analysis of Dielectric Frequency Selective Surface for Millimeter Wave Applications", Proceedings of the 25th International Conference on Infrared and Millimeter Waves, Beijing, China, September 2000.

[71]　　　　  Chen Weidong, Xu Shanjia, Wang Dongjin and Liu Falin, "Range Performance Analysis in Linear FMCW Radar", Proceedings of the 2nd International Conference on Microwave and Millimeter Wave Technology, Beijing, China, September 2000.

[72]　　　　  Liu Falin, Xu Shanjia and Chen Weidong, "An Efficient Circuit Parameter Extraction Method of Waveguide Discontinuities", Proceedings of Asia-Pacific Conference of Circuit and System, Tianjin, China, December 2000.

[73]　　　　  Xu Shanjia, Cheng Junfeng and Mizuno Koji, "Scattering Analysis of Waveguide Loaded with Anisotropic Dielectric Material by 3-D Edge-Element Method", Proceedings of Individual Symposium on Numerical Techniques for Electromagnetics in the International Symposium on Research and Education In the 21st Century, Sendai Japan, August, 2000.

[74]　　　　  Yang Li and Xu Shanjia "Multimode Network Analysis of Absorption Characteristics of Lossy Dielectric Periodic Structure in the case of Oblique Incidence", Proceedings of Cross Strait Tri-regional Radio Science and Wireless Technology Conference, Hong Kong China, December 2000.

[75]　　　　  Sun Yufa and Xu Shanjia "An Effect Method for Solving the Radar Cross Section at the Interior Resonance", Proceedings of Cross Strait Tri-regional Radio Science and Wireless Technology Conference, Hong Kong China, December 2000.

[76]　　　　  Lee M.T., Luk K.M., Yung E.K.N. and Xu S.J., "Leaky Wave Antenna with Double Dielectric Slab NRD Guide", Proceedings of Cross Strait Tri-regional Radio Science and Wireless Technology Conference, Hong Kong China, December 2000.

[77]　　　　  Xu Shanjia, Zeng Xiangyin, T. Yoneyama, Ke Wu and K. M. Luk, "A New Asymmetrically Grooved NRD Guide Leaky-Wave Antenna for Millimeter Wave Applications", Digest of the 1999 IEEE MTT-S International Microwave Symposium and Exhibition, Anaheim, California, U.S.A., June, 1999.

[78]　　　　  Zeng Xiangyin, Xu Shanjia, T. Yoneyama, K. M. Luk and Ke Wu "Analysis of Leaky Characteristics for NRD Guide with Arbitrary Profile of Cross-Sections", Digest of the 1999 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Orlando, Florida, U.S.A., July, 1999.

[79]　　　　  Wei Chongyu, Xu Shanjia and Wang Dongjin, "An Efficient Waveform for Uncoupling Time-Delay and Doppler and its Application", Proceedings of 1999 Asia-Pacific Microwave Conference, Singapore, December 1999.

[80]　　　　  Chen Zhiping, Zhu Oi and Xu Shanjia, "Experiment Research on MM Wavelength Radar Absorbing Materials", Digest of the 1999 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Orlando, Florida, U.S.A., July 1999.

[81]　　　　  Yin Fengchun, Zhu Qi and Xu Shanjia, "Using Analysis Method to Calculate the Mutual Impedance of Microwave Antenna", Digest of the 1999 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Orlando, Florida, U.S.A., July 1999.

[82]　　　　  Y.-S. Xu, “Simplified Analytical Treatment in the Singular Integral Equation Method,” Digest of the 1999 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, Orlando, Florida, U.S.A., July 1999.

[83]　　　　  Jia Dongyan Xu Shanjia, and Sheng Xinqing, "3-D Edge-Element Analysis of Characteristic Parameters for II-VI Semiconductor Material", Proceedings of ICCEA’99, Beijing, 1999.

[84]　　　　  Xu Shanjia, Wu Xinzhang, Guo Wenjia and Li Zhengjun, "Modeling and Design of Satellite Beamforming Network Consisting of Rectangular Coaxial Line", (invited paper) Proceedings of 1998 Asia-Pacific Microwave Conference, Yakohama, Japan, December, 1998.

[85]　　　　  H.-M. Chen and Y.-S. Xu, “Validity of the measured equation of invariance,” Proceedings of 1998 Asia-Pacific Microwave Conference, Yakohama, Japan, December, 1998.

[86]　　　　　 Xu Shanjia, Zeng Xiangyin, Ke Wu and K. M. Luk, "Leaky-Wave Characteristics of Trapezoidally Shaped NRD-Guide Suitable for Design of Millimeter-Wave Antenna", Digest of the 1998 IEEE MTT-S International Microwave Symposium and Exhibition, Baltimore, Maryland, U.S.A., June, 1998.

[87]　　　　  Zhu Qi and Xu Shanjia, " A New Method to Determine the Current Distribution on the EMC Dipole", Digest of the 1998 IEEE AP-S International Antenna and Propagation Symposium and URSI Radio Science Meeting, Atlanta Georgia, U.S.A., June 1998.

[88]　　　　  Jiao Dan, Xu Shanjia, Wu Xianliang and Li Shixiong, "Recovery of Signal from Transient Responses Contaminated by Gaussian White Noise Based on Orthogonal Basses of Compactly Sup-ported Wavelets in Frequency Domain”. Digest of the 1998 IEEE AP-S International Antenna and Propagation Symposium and URSI Radio Science Meeting. Atlanta Georgia, U.S.A., June 1998.

[89]　　　　  Y.-S. Xu, “Improved Formulation of the Singular Integral Equation Method for Multiplayer Unilateral Finlines,” Digest of the 1998 IEEE AP-S International Antenna and Propagation Symposium and URSI Radio Science Meeting. Atlanta Georgia, U.S.A., June 1998.

[90]　　　　  Y.-S. Xu and H.-M. Chen, “Incorporation of the Field Singularity Behaviors at Edges into the Finite-Difference Solution of Waveguide Modes,” Digest of the 1998 IEEE International Antenna and Propagation Symposium and URSI Radio Science Meeting. Atlanta Georgia, U.S.A., June 1998.

[91]　　　　  Y.-S. Xu and H.-M. Chen, “Boundary Conditions at Edges,” Proceedings of Symposium on Antenna Technology & Application Electromagnetics, Ottawa, Ontario, Canada, Aug. 1998.

[92]　　　　  Y.-S. Xu and H.-M. Chen, “Recent Progress in the Method of the Measured Equation of Invariance” (invited), Proceedings of 1998 Asia-Pacific Engineering Research Forum on Microwaves & EM Theory, Fukuoka, Japan, Dec. 1998.

[93]　　　　  Yang Li and Xu Shanjia," Multimode Network Analysis for the Frequency Selective Characteristics of Dielectric Periodic Structures with Arbitrary Profiles", Proceedings of ICMMT'-98, Beijing, China, August 1998.

[94]　　　　  Zhu Qi and Xu Shanjia, " Effect of Tail Fin on the Radiation Characteristics of the Airborne Microstrip Array" Proceedings of ICMMT'98, Beijing, China August 1998.

[95]　　　　  Jiao Dan, Xu Shanjia and Wu Xianliang, "Extraction of Natural Frequency from Measured Late-Time Transient Responses with Rational Minimax Approximation in Frequency Domain", Proceedings of ICMMT'98, Beijing, China August 1998.

[96]　　　　  Yin Chengyou, Xu Shanjia and Wang Dongjin, "Performance Analysis of the Estimation of time Delay and Doppler Stretch by Wide band Ambiguity Function", Proceedings of ICMMT'98, Beijing, China August, 1998.

[97]　　　　  Yin Chengyou, Xu Shanjia and Wang Dongjin, "The analysis and Design of Distributed Detection Based on Star Configuration", Proceedings of National Aerospace and Electronics Conference, Dayton, Ohio, U.S.A. July 1998.

[98]　　　　  Wei Chongyu, Xu Shanjia and Wang Dongjin, "Target Location, Dayton, Ohio, U.S.A. July, 1997.Based on Range-Difference Information from a Multistatic Radar System", Proceedings of ICMMT'98, Beijing, China August 1998.

[99]　　　　  Yang Hui, Cheng Zhiping, Xu Shanjia and Wan Shisong, "An Unmanned Air Vehicle (UAV) GPS Location and Navigation System", Proceedings of CJMW'98, Beijing, China August 1998.

[100]　　　 Yang Li and Xu Shanjia, "Dielectric Frequency Selective Surface for Millimeter-Wave Applications", Proceedings of CJMW'98, Beijing, China August 1998.

[101]　　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "Estimation of Length for a Thin Cylindrical Target with Multistatic System", Proceedings of CJMW'98, Beijing, China, August 1998.

[102]　　　 Jiao Dan, Xu Shanjia, Wu Xianliang and Li Shixiong, "A Simple and Effective Method of Recovering Signal from Transient Responses Contaminated by Gaussian White Noise", Proceedings of CJMW'98, Beijing, China, August 1998.

[103]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "On the Asymptotic Analysis of Cramer-Rao Bound for Time Delay Estimation", Proceedings of ICSP'98, Beijing, China, October 1998.

[104]　　　 Wei Chongyu, Xu Shanjia and Wang Dongjin and Wang Weidong, "Analysis and Simulation for the Location and Length of Thin Cylindrical Target with FMCW Multstatic Radar System", Proceedings of ICSP'98, Beijing, China October 1998.

[105]　　　 Xu Shanjia and Zhou Ping, "FDTD Analysis for Satellite BFN Consisting of Rectangular Coaxial Lines", Proceedings of 1997 Asia-Pacific Microwave Conference, Hong Kong, China January 1997.

[106]　　　 Zhu Qi and Xu Shanjia, " Pattern Analysis of Airborne Dipole Antenna in High-Frequency Region", Proceedings of 1997 Asia-Pacific Microwave Conference, Hong Kong, China, January 1997.

[107]　　　 Y.-S. Xu, “Origin and Elimination of Spurious Modes in the Solution of Field Eigenvalue Problem by the Method of Moments,” Proceedings of 1997 Asia-Pacific Microwave Conference, Hong Kong, China, January 1997.

[108]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Optimum Constellation of Multisensors in a Circular Area Based on TDOA", Proceedings of IEE International Conference on Radar", Edinburgh, U.K., October 1997.

[109]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Accurate Expression of Returned Signal Model in Bistatic Radar Systems", Proceedings of National Aerospace and Electronics Conference, Dayton, Ohio, U.S.A. July 1997.

[110]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Cramer-Rao Bound for Time-Delay Doppler and Higher Derivatives by Direct Time-Domain Method ", Proceedings of the 6th International Symposium on Recent Advances in Microwave Technology, Beijing, September 1997.

[111]　　　 Xu Shanjia and Sheng Xinqing "Combination of Edge-Element and Mode-Matching for Multi-Step Dielectric Discontinuity in Guiding Structures", Proceedings of Progress in Electromagnetics Research Symposium, Hong Kong, December 1997.

[112]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, " Estimation of Position and Velocity Vectors for a Short Range Target with Multisensors", Proceedings of First International Conference on Information, Communications and Signal Processing", Singapore, September, 1997

[113]　　　 Xu Shanjia and Wang Feng "Mode-Matching Analysis of the Reflection Characteristics for Conical Horn with Small Flaring Angle", Proceedings of 1996 China-Japan Joint Meeting on Microwaves, Hefei, China, 1996.

[114]　　　 Sheng Xinqing and Xu Shanjia, "Determination of Semiconductor Properties Through Hall-Effect Measurement with Contactless Microwave Techniques", Proceedings of the International Conference on Microwave Photonics, Kyoto, Japan, 1996.

[115]　　　 Sheng Xinqing and Xu Shanjia, "A Systematic Construction Method of the Triangle Mixed Edge-Element", Proceedings of 1996 China-Japan Joint Meeting on Microwaves, Hefei, China, 1996.

[116]　　　 Sheng Xinqing and Xu Shanjia, "Determination of the Mobility of II-VI Semiconductor Materials in Contactless Microwave Measurement with 3-D Edge-Element Method", Proceedings of The 12th Annual Review of Progress in Applied Computational Electromagnetics Symposium, Monterey, U.S.A., 1996.

[117]　　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Location Accuracy of Multistation Radars Based on Ranging Information", Proceedings of CIE International Conference of Radar, Beijing, China, 1996.

[118]　　　 Xu Shanjia, Wu Xinzhang, P. Greiner, C.R. Becker and R.Geick, "Investigation of Characteristics for II-VI Semiconductors with Contactless Microwave Techniques", Proceedings of 1995 Asia-Pacific Microwave Conference, Taejon, Korea, 1995.

[119]　　　 Xu Shanjia and Du Kai, "Network Representation and Transverse Resonance for Layered Chirowaveguides", Digest of The 20th International Conference on Infrared and Millimeter Waves, Florida, U.S.A., 1995.

[120]　　　 Sheng Xinqing and Xu Shanjia, "Vector Boundary Element Analysis for Conical Horn", Digest of The 20th International Conference on Infrared and Millimeter Waves, Florida, U.S.A.1995.

[121]　　　 Sheng Xinqing and Xu Shanjia, "A High-Mixed Edge Rectangular Element Method for Lossy Dielectric Guiding Structures", Proceedings of 1995 International Conference on Radio Science, Beijing, China, 1995.

National Scientific Journals

[122]　　 Xu Shanjia and Jia Dongyan, "High-Order 3-D Edge-Element Analysis of the 3-D Discontinuity Problems in Guided Wave Structures", Journal of Electronics & Information Technology, Vol.23, No.2, pp.160-167, 2001.

[123]　　 Sun Yufa and Xu Shanjia, "An Effective Method for Solving the Scattering Cross Section at the Interior Resonance", Chinese Journal of Radio Science, Vol.16, No.1, pp.76-79, 2001.

[124]　　 Sun Yufa and Xu Shanjia, "Calculation of Scattering Cross Section at the Interior Resonance Based on the Singular Value decomposition", Acta Electonica Sinica, Vol.29, No7, pp.958-960, 2001.

[125]　　 Cheng Junfeng and Xu Shanjia, "Analysis of Scattering Characteristics of Waveguide Loaded with Anisotropic Dielectric by 3-D 54-Parameter Edge-Element Method", Acta Electonica Sinica, Vol.29, No.5, pp.708-711, 2001.

[126]　　 Yang Li and Xu Shanjia, "Multimode Network Analysis for 3-Dimentional Dielectric FSS Structures", Journal of Electronics and Information Technology, Vol.23, No.6, pp.603-610, 2001.

[127]　　 Xu Shanjia and Zhou Ping, "FDTD Analysis for Satellite BFN Consisting of Rectangular Coaxial Lines", Journal of Infrared and Millimeter Waves, Vol.20, No.6, pp.1-5, 2001.

[128]　　 Liu Falin and Xu Shanjia, "A General Simplified Model of Resonant Cavities and Its Analysis", Journal of Microwaves, Vol.17, No.3, pp.6-11, 2001.

[129]　　 Zhou Ping and Xu Shanjia, "The Application of 3-D PML Absorbing Boundary Conditions to the Analysis of Microstrip Discontinuities", Journal of Infrared and Millimeter Waves, Vol.20, No.6, pp., 2001.

[130]　　 Xu Shanjia and Zeng Xiangyin, "Analysis of Characteristics for Novel NRD-Guide Leaky Wave Antenna", Acta Electonica Sinica, Vol.28, No.6, pp.78-81, 2000.

[131]　　 Yang Li and Xu Shanjia, "Rigorous Formulation for the 3-Dimensional Scattering Problem of Dielectric Periodic Structures by an Oblique Incidence", Acta Electonica Sinica, Vol.28, No.6, pp.72-75, 2000.

[132]　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "Analysis of Tracking Based on Range Difference Measurement with Multistatic Radar System", Journal of University of Science and Technology of China, Vol.30, No.1, pp.73-79, 2000.

[133]　　 Liu Falin and Xu Shanjia, "Band Widened Design of E Plane Waveguide Filter", Journal of Infrared and Millimeter Waves, Vol.19, No.4, pp.293-296, 2000.

[134]　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "Target Location and Speed Estimation Based on a Multistatic Radar System Using the Maximum Likelihood Approach", Journal of Applied Sciences, Vol.18, No.2, pp.117-121, 2000.

[135]　　 Chen Zhiping, Zhu Qi, Xu Shanjia and Wan Shisong, "Study on the IR and UV Dual-Spectrum Radiation", Journal of Spectroscopy and Spectral Analysis, Vol.20, No.3, pp.293-294, 2000.

[136]　　 Li Weihai and Xu Shanjia, "Microwave Network Analysis of Dispersion Characteristics for Various Dielectric Waveguides", Journal of University of Science and Technology of China, Vol.30, No.1, pp.80-84, 2000.

[137]　　 Y.-S. Xu, “Spurious Solutions in the Method of Moments,” Journal of Microwaves, Vol. 16, No. 2, pp.111-115, June 2000.

[138]　　 Xu Shanjia, Kou Xuekun and Liu Jian, "Numerical Analysis for Dispersion Characteristics of Quasi-Periodic Multi-Planar Dielectric Gratings", Acta Electonica Sinica, Vol.27, No.2, pp.130-134, 1999.

[139]　　 Xu Shanjia, Sheng Xinqing and Jia Dongyan, "3-D Edge-Element Analysis for the characteristic Parameters of II-VI Semiconductor Materials", Journal of Electronics, Vol.21, No.1, pp.110-114, 1999.

[140]　　 Xu Shanjia and Yang Li "An Effective Method for Diffraction Characteristics of Dielectric Periodic Structures with Arbitrary Profiles", Journal of applied sciences, Vol.17, No.3 pp253--258, 1999.

[141]　　 Jiao Dan, Xu Shanjia, Wu Xianliang and Li Shixiong, "Recovery of Signal from Transient Scattered Response Contaminated by Gaussian White Noise Based on Orthogonal Bases of Compactly Supported Wavelets in Frequency Domain", Acta Electonica Sinica, Vol.27, No.6, pp.118-122, 1999.

[142]　　 Yang Li and Xu Shanjia, "Multimode Network Analysis for the Frequency Selective Characteristics of Dielectric Periodic Structures", Acta Electonica Sinica, Vol.27, No.3, pp.63-66, 1999.

[143]　　 Jiao Dan, Xu Shanjia and Wu Xianliang, "A New Method for Natural Frequency Extraction", Advance in Natural Science, Vol.9, No.4, pp.351-357, 1999.

[144]　　 Zhu Qi and Xu Shanjia, "A New Method to Determine the Current Distribution on the EMC Dipole", Journal of Electronics, Vol.21, No.3, pp.391-396, 1999.

[145]　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "Study of the Location of Thin Cylindrical Target with FMCW Multistatic Radar System", Journal of University of Science and Technology of China, Vol.29, No.1, pp.76-82, 1999.

[146]　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "Analysis and Simulation for the Short Range Application of  Multistatic Radar System", Acta Electonica Sinica, Vol.27, No.12, pp.60-64, 1999.

[147]　　 Wei Chongyu, Xu Shanjia and Wang Dongjin, "A New Method for Determining the Location and Length of Thin Cylindrical Target with Range Difference from a Multistatic Radar System", Journal of Electronics, Vol.21, No.6, pp.765-770, 1999.

[148]　　 Yang Li and Xu Shanjia "Multimode Network Analysis for the Frequency Selective Characteristics of Dielectric Periodic Structure with Arbitrary Profile", Journal of China Institute of Communications, Vol.20, Supplement, December, pp.98-104, 1999.

[149]　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "The Analysis and Design of Distributed Detection Based on Star Configurations", Journal of China Institute of Communications, Vol.20, Supplement, December, pp.226-231, 1999.

[150]　　 Chen Zhiping, Xu Shanjia and Zhu Qi, "Production of IR and UV Spectrum", Journal of Spectroscopy and Spectral Analysis, No.6, 1999.

[151]　　 Chen Zhiping, Zhu Qi and Xu Shanjia, "A New Method for Analyzing the Microstrip Antenna", Journal of Harbin Institute of Technology, Vol.31, No.2, pp.36-38, 1999.

[152]　　 Y.-S. Xu and A. S. Omar, “Rigorous, Efficient, and Complete Solution of Eigenmodes in Multilayer Unilateral Finlines,” Journal of Infrared and Millimeter Waves, Vol.18, pp. 1-11, 1999.

[153]　　 Yin Fengchun, Zhu Qi and Xu Shanjia, "Using Analysis Method to Calculate the Impedance of Microstrip Antenna", Modern Radar, Vol.21, No.5, pp.85-90, 1999.

[154]　　 Xu Shanjia and Zhang Lijun, "Analysis for Reflection and Radiation Characteristics of Circular Dielectric Rod Antenna Excited with HE Mode", Acta Electonica Sinica, Vol.26, No.3, pp.60-64, 1998.

[155]　　 Sheng Xinqing and Xu Shanjia, "A New Method For Systematically Constructing the Space of the Triangular Mixed-Edge Element", Acta Electonica Sinica, Vol.26, No.6, pp.66-70, 1998.

[156]　　 Xu Shanjia, Liu Jian and K. S. Chiang, "The Effect of Radiation on Transmission of Quasi-Periodic Multi-Planar Dielectric Gratings", Journal of Infrared and Millimeter Waves, Vol.17, No.1, pp.1-6, 1998.

[157]　　 Zhang Lijun and Xu Shanjia, "Finite-Element Analysis of Planar Dielectric Waveguide Discontinuities", Journal of Electronics, Vol.20, No.1, pp.103-108, 1998.

[158]　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Asymptotic Analysis of Cramer-Rao Bound for Time-Delay Estimation", Journal of Applied Sciences, Vol.16, No.2, pp.19-26, 1998.

[159]　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Analysis of the Uncoupled Property of the Time-Delay and Doppler Estimations in Passive Location System", Signal Processing, Vol.14, No.3, pp.216-220, 1998.

[160]　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Optimum Construction of Sensors in Asymmetrical Area Based on TDOA", Acta Electonica Sinica, Vol.26, No.6, pp.21-25, 1998.

[161]　　 Xu Shanjia and Zhang Lijun, "Analysis for Reflection and Radiation Characteristics of Tapered Planar Dielectric Surface Wave Antennas", Journal of China Institute of CommunicationsVol.18, No.10, 1997.

[162]　　 Sheng Xinqing and Xu Shanjia, "Edge-Element Analysis for Periodic Structures", Acta Electonica Sinica, Vol.25, No.12, pp.78-82, 1997.

[163]　　 Yin Chengyou, Xu Shanjia and Wang Dongjin, "Constellation and Location Accuracy Analysis of Multistatic Radars Based on Range Differences", Journal of Electronics, Vol.19, No.6, pp.786-791, 1997.

[164]　　 Zhang Lijun and Xu Shanjia, "Reflection Analysis of Circular Dielectric Rod Antenna Excited by Circular Symmetric Mode", Journal of Microwaves, Vol.13, No.4, pp.224-229, 1997.

[165]　　 Y.-S. Xu and A. S. Omar, “Definition of the characteristic impedance,” Science in China (Series E), Vol. 39, No. 6, pp. 579-583, 1996.

[166]　　 Xu Shanjia, Wang Feng, Yi Nianxue and Zhang Ying, "Mode-Matching Analysis of the Reflection Characteristics for Conical Horn Antenna with Small Flaring Angle", Acta Electonica Sinica, Vol.24, No.12, 1996.

[167]　　 Xu Shanjia and Zhang Yaojiang, "Rigorous Analysis for Strip-type Circular Polarizer", Acta Electonica Sinica, Vol.24, No.3, pp.53-56, 1996.

[168]　　 Xu Shanjia and Zhang Lijun, "Edge-Element Analysis of Dispersion Characteristics of Anisotropic Guided-Wave Structures", Acta Electonica Sinica, Vol.24, No.12, 1996.

[169]　　 Sheng Xinqing and Xu Shanjia, "High-Order Mixed-Edge Rectangular Element Analysis for Lossy Dielectric Waveguide", Acta Electonica Sinica, Vol.24, No.9, pp.70-73, 1996.

[170]　　 Sheng Xinqing and Xu Shanjia, "3-D Edge-Element Analysis for Scattering Characteristics of II-VI Semiconductor Materials with Gaps", Journal of Infrared and Millimeter Waves, Vol.15No.12, 1996.

[171]　　 Tang Ming and Xu Shanjia, "FD-TD Analysis of the Eigenvalues for TE and TM Modes in Waveguides with Arbitrary Cross Section", Journal of the China University of Science and Technology, Vol.18, No.4, 1996.

[172]　　 Xu Shanjia and Zhang Yaojiang, "A New Method for Determination of Self Admittance of Waveguides Slot Antenna", Journal of Infrared and Millimeter Waves, Vol.14, No.2, pp.81-86, 1995.

[173]　　 Xu Shanjia and Wang Feng, "Improved Mode-Matching and Network Analysis of E-Plane Waveguide Branch Directional Couplers", Journal of Electronics, Vol.17, No.4, pp.438-442, 1995.