Title :
Wideband Dual-Polarized Patch Antenna With Low Cross Polarization and High Isolation
Author :
Li, Biao ; Yin, Ying-Zeng ; Hu, Wei ; Ding, Yang ; Zhao, Yang
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
A coax-feed wideband dual-polarized patch antenna with low cross polarization and high port isolation is presented in this letter. The proposed antenna contains two pairs of T-shaped slots on the two bowtie-shaped patches separately. This structure changes the path of the current and keeps the cross polarization under -40 dB. By introducing two short pins, the isolation between the two ports remains more than 38 dB in the whole bandwidth with the front-to-back ratio better than 19 dB. Moreover, the proposed antenna achieving a 10-dB return loss bandwidth of 1.70-2.73 GHz has a compact structure, thus making it easy to be extended to form an array, which can be used as a base station antenna for PCS, UMTS, and WLAN/WiMAX applications.
Keywords :
antenna feeds; bow-tie antennas; broadband antennas; electromagnetic wave polarisation; microstrip antennas; slot antennas; PCS; T-shaped slot antenna; UMTS; WLAN; WiMAX; bandwidth 1.70 GHz to 2.73 GHz; base station antenna; bowtie-shaped patch; coax-feed wideband dual-polarized patch antenna; compact structure; front-to-back ratio; high port isolation; loss 10 dB; low cross polarization; Antenna measurements; Antenna radiation patterns; Patch antennas; WiMAX; Wideband; Dual-polarized; high port isolation; low cross polarization; wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2195149
