This article presents a CPW‐fed planar monopole antenna with a small ground‐plane size. The monopole antenna is a triple‐band design and is meant for mobile handsets with WiFi and WiMAX features. The planar structure comprises an L‐shaped monopole backed by a stub‐loaded open‐loop resonator. The proposed antenna features three bandwidths of 2.25–2.62 GHz, 3.25–4.97 GHz, and 5.2–6.30 GHz, which yielded the maximum gain of around 1 to 2 dBi. Reduction effects of ground‐plane on antenna's performance rectified by the parameters of open‐loop resonator are also investigated. The overall dimensions are 46 (W) × 34 (L) × 0.8 (d) mm3.
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Chung et al. (2011) studied this question.
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