Circularly Polarized Square Ring Slot Antenna with Arrow-Shaped Structure

ETRI Journal

关键词: microstrip antenna;    Circular polarization;   

Others  :  1185762
DOI  :  10.4218/etrij.09.0109.0020

【 摘 要 】

A novel design of a compact square-ring slot microstrip antenna for achieving circular polarization (CP) operation is proposed and experimentally studied. By using an arrow-shaped slot structure as a radiating element, the resonant frequency of the proposed antenna is significantly lowered, which can lead to a large size reduction for fixed frequency operation. The CP radiation characteristics are achieved by loading with proper asymmetry, which can be placed diagonally. A prototype of the proposed design is implemented and its performance is measured. Measured results show that radiation patterns with good CP characteristics are obtained at the resonant frequency.

   

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