In this study, a multiple U‐shaped slot microstrip patch antenna for application in the 5‐GHz band is designed and fabricated. To obtain sufficient bandwidth in the operating band, foam is inserted between the substrate and ground plane, a coaxial probe source is used, and the position of the probe shift is adjusted from the center to the left. The measured result (5.02–5.955 GHz) of the fabricated antenna satisfies the conditions of VSWR < 2.0 in 5‐GHz band (5.15–5.35 GHz, 5.47–5.725 GHz, and 5.725–5.825 GHz): gain of 3.88–9.28 dBi and broad radiation pattern.
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Ju et al. (2004) studied this question.
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