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Journal Article

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., Li, Z. F., and Sun, X. W., “An Approximate Expression of the Effective Permittivity In the Inhomogeneous Difference Unit Grid”, Journal of Applied Sciences, 2004.

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., Ruvio, G., and Ammann, M. J., “A Circularly Polarized Annular-ring Patch Antenna with a Groundplane EBG Annular-slot Array”, International Journal of Microwave and Optical Technology, vol. 3, no. 2, pp. 69-75, 2008.

Narbudowicz, A., Bao, X. L., Ammann, M. J., Shakhtour, H., and Heberling, D., “Circularly Polarized Antenna with Steerable Dipole-like Radiation Pattern”, IEEE Transactions on Antennas & Propagation, vol. 62, no. 2, pp. 519 - 526, 2014.

Bao, X. L. and Ammann, M. J., “Compact Annular-Ring Embedded Circular Patch Antenna with a Cross-Slot Ground Plane for Circular Polarization”, Electronics Letters, vol. 42, no. 4, pp. 192-193, 2006.

Bao, X. L. and Ammann, M. J., “Compact Concentric Annular-Ring Patch Antenna for Triple-Frequency Operation”, Electronics Letters, vol. 42, no. 20, pp. 1129-1130, 2006.

Curto, S., McEvoy, P., Bao, X. L., and Ammann, M. J., “Compact Patch Antenna for Electromagnetic Interaction with Human Tissue at 434 MHz”, IEEE Transactions on Antennas & Propagation, vol. 57, no. 9, pp. 2564-2571, 2009.

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.

Narbudowicz, A., John, M., Sipal, V., Bao, X. L., and Ammann, M. J., “Design Method for Wideband Circularly Polarized Slot Antennas”, IEEE Transactions on Antennas & Propagation, vol. 63, no. 10, pp. 4271 - 4279, 2015.

Bao, X. L., Ruvio, G., and Ammann, M. J., “Directional Dual-Band Slot Antenna with Dual-Bandgap High-Impedance-Surface Reflector”, Progress In Electromagnetics Research, vol. C, no. 9, pp. 1-11, 2009.

Narbudowicz, A., Bao, X. L., and Ammann, M. J., “Dual Circularly-polarized Patch Antenna Using Even and Odd Feed-line Modes”, IEEE Transactions on Antennas & Propagation, vol. 61, no. 9, pp. 4828-4831, 2013.

Narbudowicz, A., Bao, X. L., and Ammann, M. J., “Dual-band Omnidirectional Circularly Polarized Antenna”, IEEE Transactions on Antennas & Propagation, vol. 61, no. 1, pp. 77-83, 2013.

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-Frequency Dual Circularly-Polarized Patch Antenna with Wide Beamwidth”, Electronics Letters, vol. 44, no. 21, pp. 1233-1234, 2008.

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.

Yang, K., Hoang, M. Ha, Bao, X. L., McEvoy, P., and Ammann, M. J., “A Dual-Stub Ka-Band Vivaldi Antenna with Integrated Bandpass Filter”, IET Microwaves, Antennas & Propagation, vol. 12, no. 5, pp. 668–671, 2018.

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 Zhang, W. X., “A Hybrid GMT-PO Method for Calculating the NDC of the Irregular Edge of a Semi-Infinite Cone”, International Journal of Infrared and Millimeter Waves, vol. 22, no. 8, pp. 1259-1265, 2001.

Bao, X. L. and Zhang, W. X., “A Hybrid GMT/PO Method For Calculating the NDC of the Irregular Edge of a Semi-Infinite Circular Cylinder”, Microwave and Optical Technology Letters, vol. 31, no. 2, pp. 108-110, 2001.

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., Ruvio, G., and Ammann, M. J., “Low-Profile Dual-Frequency GPS Patch Antenna Enhanced with Dual-Band EBG Structure”, Microwave and Optical Technology Letters, vol. 49, no. 11, pp. 2630-2634, 2007.

Bao, X. L. and Ammann, M. J., “Microstrip-Fed Dual-Frequency Annular-Slot Antenna Loaded by Split-Ring Slot”, IET Microwaves, Antennas & Propagation, vol. 3, no. 5, pp. 757-764, 2009.

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. and Ammann, M. J., “Monofilar Spiral Slot Antenna for Dual-Frequency Dual-Sense Circular Polarization”, IEEE Transactions on Antennas & Propagation, vol. 59, no. 8, pp. 3061-3065, 2011.

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