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This paper presents a planar monopole antenna with dual-band character for WLAN/Wi-Fi application. It can obtain the impedance bandwidths of 2.30–2.49 and 4.70–5.90 GHz with S11 less than −10 dB. The overall dimension of this antenna is 30 × 26mm 2. The antenna is printed on the substrate of FR4 with two “C”-shaped strips and a microstrip feed line on the front side and the ground plane on the flip...
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