Optimization of cross polarization characteristics for dual-polarized patch antennas

2004 ◽  
Author(s):  
K. Nishimoto ◽  
T. Fukasawa ◽  
M. Ohtsuka ◽  
S. Makino
Keyword(s):  
Patch Antennas ◽  
Cross Polarization ◽  
Polarization Characteristics ◽  
Dual Polarized

scholarly journals A Wideband Dual-Polarized Antenna Using Planar Quasi-Open-Sleeve Dipoles for Base Station Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Guan-xi Zhang ◽  
Li Sun ◽  
Bao-hua Sun
Keyword(s):  
Return Loss ◽  
Ground Plane ◽  
Base Station ◽  
Cross Polarization ◽  
High Frequencies ◽  
Feeding Structure ◽  
Polarization Characteristics ◽  
Dual Polarized ◽  
Dual Polarized Antenna ◽  
Better Than

A wideband dual-polarized antenna for WLAN, WiMAX, and LTE base station applications is presented in this paper. The proposed antenna consists of two pairs of orthogonal planar quasi-open-sleeve dipoles along the centerlines, a balanced feeding structure and a square ground plane. The planar quasi-open-sleeve dipole comprises a pair of bowtie-shaped planar dipoles with two parallel curve parasitic elements. The introduced parallel curve parasitic elements change the path of the current of the original bowtie-shaped planar dipoles at high frequencies and hence wideband characteristic is achieved. Two pairs of the planar quasi-open-sleeve dipoles placed orthogonally further broaden the bandwidth of the antenna with dual-polarization characteristics. The proposed antenna achieves a 10-dB return loss bandwidth from 2.32 to 4.03 GHz (53.9% bandwidth) using the planar quasi-open-sleeve dipole structures. The isolation between the two ports remains more than 32 dB in the whole bandwidth. Measured results show that the proposed antenna keeps the cross-polarization under −33 dB and the front-to-back ratio better than 15 dB in the operating band. The antenna has an area of 0.3λ  × 0.3λat 2.32 GHz making it easy to be extended to an array element.

A method of decreasing cross-polarization in dual-polarized patch antennas

2007 ◽  
Vol 90 (8) ◽  
pp. 1-9
Author(s):  
Kengo Nishimoto ◽  
Toru Fukasawa ◽  
Masataka Ohtsuka ◽  
Shigeru Makino ◽  
Yonehiko Sunahara
Keyword(s):  
Patch Antennas ◽  
Cross Polarization ◽  
Dual Polarized

A novel design method on low cross polarization for dual-polarized patch antennas

2004 ◽  
Vol 87 (9) ◽  
pp. 9-17 ◽  
Author(s):  
Toru Takahashi ◽  
Ichirou Iwase ◽  
Hiromasa Nakaguro ◽  
Hiroaki Miyashita ◽  
Yoshihiko Konishi
Keyword(s):  
Design Method ◽  
Patch Antennas ◽  
Cross Polarization ◽  
Dual Polarized ◽  
Novel Design
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