Abstract
An LTE smart mobile antenna with multiband operation is proposed to work in the bands of LTE, GSM, DCS, PCS, PHS, UMTS, Bluetooth, and WLAN. Compared with those reported in the literature, the proposed antenna features a simple and straightforward design procedure, which is composed of three easy steps. Firstly, A three-dimensional meandering monopole antenna is constructed along the edge of a rectangular PCB to act as the main radiator, resulting in the bands of LTE, DCS, and PCS, PHS, and UMTS. Secondly, a shorted stub is fabricated to excite the GSM band, and also to improve the impedance matching in the bands of LTE and GSM. Finally, the second shorted stub is added to radiate in the band of WLAN. The numerical results show that the i6dB return-loss bandwidths are from 0.7GHz to 0.985GHz (0.285GHz, 34%) in the lower band and from 1.64GHz to 2.535GHz (0.895GHz, 43%) in the higher band. The corresponding measured data are from 0.7GHz to 1.03GHz (0.33GHz, 38%) in the lower band and from 1.64GHz to 2.55GHz (0.91GHz, 43%) in the higher band. The measured antenna gains are about 2 to 3dBi in the lower and higher bands, respectively.
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