A Reconfigurable CP/LP Antenna With Cross-Probe Feed

In this letter, a wideband polarization-reconfigurable patch antenna with capability of generating circular polarization (CP) and linear polarization (LP) propagations is introduced. This antenna consists of a patch, a ground plane, and a cross-feeding probe, which is reconfigured by p-i-n diodes. The proposed cross-probe structure contributes a wide impedance bandwidth feature for the antenna. By controlling the operation of the p-i-n diodes, different polarizations of the patch can be excited. This antenna has three selective operating modes, including left-hand circular polarization, right-hand circular polarization, and linear polarization. For CP modes, the antenna yields an axial-ratio (AR) bandwidth of 19.2% (for AR ≤ 3 dB) with a broadside antenna gain of 7.7 dBic, while the antenna has an impedance width of 21% and the broadside gain of 8.4 dBi for its LP mode. The radiation patterns are stable across the operating bandwidth for the three modes. Measured results agree with the simulation analysis. This antenna can find potential applications in Wi-Fi and satellite communication systems.

[1]  Hang Wong,et al.  Polarization Reconfigurable Wheel-Shaped Antenna With Conical-Beam Radiation Pattern , 2015, IEEE Transactions on Antennas and Propagation.

[2]  Y. Chow,et al.  Experimental study of a microstrip patch antenna with an L-shaped probe , 2000 .

[3]  Jeen-Sheen Row,et al.  Design of Polarization Diversity Patch Antenna Based on a Compact Reconfigurable Feeding Network , 2014, IEEE Transactions on Antennas and Propagation.

[4]  K. P. Ray,et al.  Low-RCS and Polarization-Reconfigurable Antenna Using Cross-Slot-Based Metasurface , 2015, IEEE Antennas and Wireless Propagation Letters.

[5]  Hang Wong,et al.  Polarization Reconfigurable Aperture-Fed Patch Antenna and Array , 2016, IEEE Access.

[6]  Fan Yang,et al.  Circular Polarization Reconfigurable Wideband E-Shaped Patch Antenna for Wireless Applications , 2013, IEEE Transactions on Antennas and Propagation.

[7]  Y. Kim,et al.  A reconfigurable microstrip antenna for switchable polarization , 2004, IEEE Microwave and Wireless Components Letters.

[8]  S. W. Lee,et al.  Simple Polarization-Reconfigurable Antenna With T-Shaped Feed , 2016, IEEE Antennas and Wireless Propagation Letters.

[9]  T. I. Yuk,et al.  Design of Polarization Reconfigurable Antenna Using Metasurface , 2014, IEEE Transactions on Antennas and Propagation.

[10]  Sheng Sun,et al.  A Novel Reconfigurable Feeding Network for Quad-Polarization-Agile Antenna Design , 2016, IEEE Transactions on Antennas and Propagation.

[11]  Yang Li,et al.  Bandwidth Enhancement of a Polarization-Reconfigurable Patch Antenna With Stair-Slots on the Ground , 2014, IEEE Antennas and Wireless Propagation Letters.

[12]  Hang Wong,et al.  Polarization reconfigurable CP antenna with 3D meandering probe-fed , 2015, 2015 Radio and Antenna Days of the Indian Ocean (RADIO).

[13]  Xue-Xia Yang,et al.  A Polarization Reconfigurable Patch Antenna With Loop Slots on the Ground Plane , 2012, IEEE Antennas and Wireless Propagation Letters.