Abstract
A miniaturized internal wideband antenna suitable for integration with the printed circuit board (PCB) of a wireless universal serial bus (WUSB) dongle is presented in this paper. The proposed antenna mainly consists of a folded metal plate with two sides beveled. By introducing a short-circuited pin connected to the system ground and etching a pair of slots in the bevel sides of the folded metal plate, a large impedance bandwidth from 2.4GHz to more than 11GHz is obtained, which easily covers the 2.4GHz WLAN, WiMAX, S-DMB and UWB frequency bands. The efiects of the short-circuited pin and the narrow slots on the impedance matching of the proposed antenna are investigated. The proposed antenna is easy to be fabricated by bending a sample metal plate due to its miniaturized geometry of 5 £ 12 £ 12:5mm 3 . Details of the antenna design are described, and experimental results of the constructed prototypes are presented and discussed.
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