A Wideband Dual-Polarized Slot Antenna

In this letter, we have proposed a dual-polarized planar circular slot antenna for wideband application. Two orthogonal polarizations were achieved by adopting different feeding mechanisms with high ports isolation. The horizontal polarization is excited by a meander-line coupled slot, and the vertical polarization is fed by a stepped monopole. The prototype of the proposed antenna has been built and tested. The proposed design obtained a fairly wide bandwidth (1.70-2.71 GHz) and a high isolation (> 33 dB) over the entire band. The gain of the dual polarizations is also measured and discussed.

[1]  Zhenghe Feng,et al.  A Low-Cost Dual-Polarized Array Antenna Etched on a Single Substrate , 2013 .

[2]  N. Behdad,et al.  A wide-band slot antenna design employing a fictitious short circuit concept , 2005, IEEE Transactions on Antennas and Propagation.

[3]  M. Barba,et al.  A High-Isolation, Wideband and Dual-Linear Polarization Patch Antenna , 2008, IEEE Transactions on Antennas and Propagation.

[4]  E. Soliman,et al.  Dual-polarized omnidirectional planar slot antenna for WLAN applications , 2005, IEEE Transactions on Antennas and Propagation.

[5]  Kwai-Man Luk,et al.  A Broadband Dual-Polarized Magneto-Electric Dipole Antenna With Simple Feeds , 2009, IEEE Antennas and Wireless Propagation Letters.

[6]  Powen Hsu,et al.  Isosceles Triangular Slot Antenna for Broadband Dual Polarization Applications , 2009, IEEE Transactions on Antennas and Propagation.

[7]  Wei Hu,et al.  Wideband Dual-Polarized Patch Antenna With Low Cross Polarization and High Isolation , 2012, IEEE Antennas and Wireless Propagation Letters.

[8]  Kwai-Man Luk,et al.  A Shorted Bowtie Patch Antenna With a Cross Dipole for Dual Polarization , 2007, IEEE Antennas and Wireless Propagation Letters.

[9]  G. Manara,et al.  A wideband dual-polarized stacked patch antenna for base stations , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[10]  Zhenghe Feng,et al.  A Dual-Polarization Slot Antenna Using a Compact CPW Feeding Structure , 2010, IEEE Antennas and Wireless Propagation Letters.

[11]  Zhenghe Feng,et al.  Dual-Mode Loop Antenna With Compact Feed for Polarization Diversity , 2011, IEEE Antennas and Wireless Propagation Letters.