Dual Circularly Polarized Patch Antenna for Polarization Diversity Applications
Date Issued
2014
Date
2014
Author(s)
Tsai, Yung-Feng
Abstract
A dual circularly polarized patch antenna with polarization diversity is proposed for wireless communication applications. The proposed antenna has a simple structure and is easy to fabricate. The circular polarization can be obtained by truncating the corners at the square patch. The two patch antennas are placed perpendicular to each other, then the position of the truncated corner can be changed to generate the left hand and right hand circularly polarized circular polarizations.
In order to increase the isolation between the two patches, a strip is placed between the two patches. The isolation is then increased by about 3 – 4 dB in the measurement result. Because of the strip, the impedance bandwidth is slight decreased slightly, and the circular polarization is also interfered. This method does not change the antenna structure, and the proposed antenna still has a simple structure and is easy to fabricate.
Details of the antenna design are discussed. Experimental and simulated results are also presented and discussed.
Subjects
微帶天線
圓極化
極化分集
Type
thesis
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