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Virtually Shorted Patch Antenna for Circular Polarization

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6 Author(s)
Hang Wong ; Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China ; Kwok Kan So ; Kung Bo Ng ; Kwai Man Luk
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This letter presents a new circularly polarized patch antenna with loaded shorting elements to achieve symmetric broadside radiation and size reduction. The loaded elements are parasitic to the driven patch, but are shorted to the ground plane. Conventionally, shorting pins or walls are a common technique for reducing the size of the antenna. However, deterioration in broadside radiation with high cross-polar level occurs. The proposed shorting elements provide a solution for size reduction of the radiating patch while maintaining good broadside radiation pattern. Since the radiating patch is effectively shorted to the ground at the operating frequency, it is designated as a virtually shorted patch antenna (VSPA).

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )