Publications

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Bao, X. L. and Ammann, M. J., Dual-Frequency Dual-Sense Circularly-Polarized Slot Antenna Fed by Microstrip Line, IEEE Transactions on Antennas & Propagation, vol. 56, no. 3, pp. 645-649, 2008.
Bao, X. L. and Ammann, M. J., Comparison of Several Novel Annular-Ring Microstrip Patch Antennas for Circular Polarization, Journal of Electromagnetic Waves & Applications, vol. 20, no. 11, pp. 1427-1438, 2006.
Bao, X. L., Ruvio, G., Ammann, M. J., and John, M., A Novel GPS Patch Antenna on a Fractal Hi-Impedance Surface Substrate, IEEE Antennas and Wireless Propagation Letters, vol. 5, no. 1, pp. 323-326, 2006.
Bao, X. L., Li, Z. F., and Sun, X. W., The Simple Derivation For the Effective Permittivities Formulae In the Finite Difference Grids, in IEEE AP-S International Symposium on Antennas and Propagation, Monterey, CA, USA, 2004, vol. 1, pp. 89- 92.
Bao, X. L., Ammann, M. J., and McEvoy, P., Microstrip-fed Wideband Circularly Polarized Printed Antenna, IEEE Transactions on Antennas & Propagation, vol. 58, no. 10, pp. 3150-3156, 2010.
Bao, X. L., Zhang, W. X., and Li, L. W., Study on the Dispersion Characteristics of PBG Structure Consisting of Anisotropic Medium By Using PSTD Method, Acta Electronica Sinica, vol. 65, no. 12, pp. 345-349, 2003.
Bao, X. L. and Zhang, W. X., Analysis on the Characteristics of Electromagnetic Wave Propagation of PBG Structure By Using FDTD Method, Chinese Journal of Radio Science, vol. 16, pp. 120-122, 2001.
Bao, X. L. and Ammann, M. J., (Invited) Compact Spiral Loaded Printed Monopole Antenna, in European Conference on Antennas and Propagation - EuCAP, Barcelona, Spain, 2010, pp. C12P2-4.
Bao, X. L. and Ammann, M. J., Printed UWB Antenna with Coupled Slotted Element for Notch-frequency Function, International Journal of Antennas & Propagation, vol. 2008, p. Article ID 713921, 8 pages, 2008.
Bao, X. L., Zhang, W. X., and Bo, Y. M., Numerical Diffraction Coefficients of the Irregular Top on a Conductive Cone a GMT/PO Approach, in International Symposium on Antennas, Propagation and EM Theory, Beijing, China, 2000, pp. 496 - 499.
Bao, X. L., Li, Z. F., and Sun, X. W., FDTD Analysis of Dispersion Characteristics of 2-D Dielectric Photonic Crystal Described By Effective Permittivity in Grid, Journal of Shanghai Jiaotong University, 2004.
Bao, X. L. and Ammann, M. J., Dual-Frequency Circularly-Polarized Patch Antenna with Compact Size and Small Frequency Ratio, IEEE Transactions on Antennas & Propagation, vol. 55, no. 7, pp. 2104-2107, 2007.
Bao, X. L. and Ammann, M. J., Dual-band GPS Patch Antenna based on Dual-band Fractal EBG Technique, in LAPC - Loughborough Antennas & Propagation Conference, Loughborough, UK, 2006, pp. 53-56.
Bao, X. L. and Ammann, M. J., Wideband Unidirectional Circularly Polarized Antenna for GPS/Galileo/GLONASS, in IEEE International Symposium on Antennas and Propagation, Chicago, IL, USA, 2012, p. 460.4.
Bao, X. L., Sun, X. W., Li, Z. F., Bao, W. Y., and Qian, R., 35 GHz Patch Antenna Array Based on the Electromagnetic Band‐Gap Structure, International Journal of Infrared and Millimeter Waves, vol. 24, no. 12, pp. 1799-1804, 2004.
Bao, X. L. and Ammann, M. J., Investigation on UWB Printed Monopole Antenna with Rectangular Slitted Groundplane, Microwave and Optical Technology Letters, vol. 49, no. 7, pp. 1585-1587, 2007.
Bao, X. L., Sun, X. W., Li, Z. F., Bao, W. Y., and Qian, R., 4-Unit Patch Antenna Array Based on the Electromagnetic Bandgap Structure, in IEEE Asia Pacific Microwave conference, New Delhi, India, 2004.
Bao, X. L., Zhang, W. X., and Li, L. W., Study on the Bandgap Characteristics of Complex Material PBG Structure By Using Non-Yee Grid Higher Order FDTD Method, Chinese Journal of Radio Science, vol. 18, no. 4, pp. 353-358, 2003.
Bao, X. L., Ruvio, G., and Ammann, M. J., Investigation on Annular-Ring Patch Antenna with EBG Structure, in European Conference on Antennas and Propagation - EuCAP, Nice, France, 2006, p. PA4.
Bao, X. L., Zhang, W. X., and Bo, Y. M., Numerical Diffraction Coefficients of the Irregular Top on a Semi-Infinite Conductive Circular-Cylinder a GMT/PO Approach, in International Symposium on Antennas, Propagation and EM Theory, Beijing, China, 2000, pp. 500-503.
Bao, X. L., Li, Z. F., and Sun, X. W., Application on the Microstrip Patch Array Antenna with the Electromagnetic Bandgap Structure, Journal of Microwave, 2005.
Bao, X. L. and Ammann, M. J., Small Patch/Slot Antenna with 53% Input Impedance Bandwidth, Electronics Letters, vol. 43, no. 3, pp. 146-148, 2007.
Bao, X. L. and Ammann, M. J., A Cavity-Backed Spiral Slot Antenna with Wide Axial Ratio Beamwidth for GPS System, Microwave and Optical Technology Letters, vol. 56, no. 5, pp. 1050-1054, 2014.
Bao, X. L. and Zhang, W. X., Comparison Study of FDTD And MRTD Methods For Analyzing the 2-D PBG Structure, in Cross Strait Tri-Regional Radio Science and Wireless Technology Conference, Shanghai, China, 2002, pp. 172-175.
Bao, X. L., Shynu, S. V., and Ammann, M. J., Design of a Tunable Compact Antenna for Digital Video Broadcasting Handheld Terminals, in LAPC - Loughborough Antennas & Propagation Conference, Loughborough, UK, 2009, pp. 461-464.

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