Abstract
Three-dimensional compact volume internal antenna for universal serial bus (USB) dongle that covers hexa operating bands is proposed in this paper. The volume of the proposed USB dongle is 15×20×4 mm3; it is based on two connected monopoles, one of them is semi-circular monopole ended by three unit cells of meander-line and the other is a bent monopole with four unit cells of high-impedance wire. The proposed antenna is realized on a printed circuit board to reduce the fabrication costs. The coupling between the antenna elements broadens the operating bandwidth, which includes most of the wireless commercial service bands, GSM850/GSM900/UMTS/GSM1800/GSM1900/WCDMA2100/802.11b/g/LTE2600 (824–2690 MHz) as well as 802.11a/n (5150–5825 MHz). The antenna's simulated and experimental results are in good agreement.
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