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http://dx.doi.org/10.6109/jkiice.2010.14.7.1537

A Study on Dual Circular Polarized Patch Antenna with Compact Size  

Yun, Gi-Ho (성결대학교 정보통신공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.7, 2010 , pp. 1537-1543 More about this Journal
Abstract
This paper describes a compact microstrip antenna with dual polarization characteristics. The antenna, receiving both a left-hand circularly polarized(LHCP) wave and a right-hand circularly polarized(RHCP) wave, can be used for a polarization diversity. A diamond-shaped patch with internal empty room is designed for impedance matching as well as size reduction. And slots are added around feeding point to improve input matching. The proposed antenna has been applied to GPS(global positioning system), operating at 1.57GHz. And, the proposed idea has been verified and estimated by simulation. The measurement results show that it has VSWR 2:1 bandwidth of 83MHz, 3dB axial bandwidth of about 58MHz, 3dB beamwidth of 90degree, and gain of 0dBi, respectively, for RHCP. Also, it has similar performances for LHCP.
Keywords
Patch Antenna; Circular Polarization; Microstrip; Diversity;
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