Microstrip line-fed L-strip patch antenna

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Microstrip line-fed L-strip patch antenna

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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.

Inspec keywords: microstrip lines; antenna feeds; electromagnetic coupling; antenna radiation patterns; microstrip antennas

Other keywords: thickness; average gain; dielectric substrates; microstrip line-fed L-strip patch antenna; feeding design; stacked parasitic patch; foam substrates; inverted L-shaped strip; radiation patterns; rectangular patch antenna; wideband electromagnetic-coupled single-layer microstrip patch antenna; 4.5 GHz; impedance bandwidth

Subjects: Single antennas; Antenna accessories

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