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A triple-band Bluetooth (BT) and wireless local area network (WLAN) monopole antenna has been proposed based on concepts called capacitive loading/de-loading and inductive loading/de-loading. It has been demonstrated that BT and triple-band WLAN operations, including the BT 2.4 GHz (2.4–2.484 GHz), the WLAN IEEE 802.11 2.4 GHz (2.4–2.484 GHz), 5.2 GHz WLAN (5.15–5.35 GHz) and WLAN 5.8 GHz (5.725–5.825 GHz) can be achieved by using the monopole antenna with an overall size 8.0×11.5×1.0 mm3, which is one of the most compact WLAN monopole antennas covering the three frequency bands.
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Wang et al. (2008) studied this question.
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