PLANAR TRIPLE-BAND BALANCE-SHAPED SLOT ANTENNA

摘要

A novel design of planar balance-shaped slot antenna suitable for triple-band WLAN/WiMAX applications is proposed in this article. It consists of a slotted ground plane, an FR4 substrate, and an L-shaped microstrip feedline. The radiating element of the proposed antenna is composed of a horizontal H-shaped slot and an M-shaped slot, like a balance. The horizontal H-shaped slot mainly contributes to the 2.4- and 3.4-GHz resonant modes while the resonant modes at 5.4 and 5.8 GHz are generated by the M-shaped slot. The overall size of the proposed antenna is only 30 x 28 mm(2), very compact, making it easy to be integrated with other RF front-end circuits. The measured results agree well with the simulated ones and demonstrate that the antenna has a triple-band characteristic entirely covering the 2.4/5.2/5.8-GHz WLAN and 2.5/3.5/5.5-GHz WiMAX operating bands. Furthermore, monopole-like radiation patterns with acceptable gains make it a good candidate as an internal antenna for WLAN/WiMAX applications. (C) 2016 Wiley Periodicals, Inc.