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Microstrip line-fed L-strip patch antenna

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3 Author(s)
C. L. Mak ; Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong ; K. M. Luk ; K. F. Lee

A wideband electromagnetic-coupled single-layer microstrip patch antenna is studied experimentally. With dielectric and foam substrates of total thickness ~0.13 λ0, a rectangular patch antenna with impedance bandwidth (SWR ⩽2) of 49% and 3 dB gain bandwidth of 54% are obtained. It has an average gain of 6.5 dBi and stable radiation patterns across the passband. Furthermore, with the employment of a stacked parasitic patch, a 58%, impedance and gain bandwidth is achieved with similar radiation patterns and a higher average gain. A notable structure in the feeding design is that an inverted L-shaped strip is connected to the end of the microstrip line and no matching network is required

Published in:

IEE Proceedings - Microwaves, Antennas and Propagation  (Volume:146 ,  Issue: 4 )