Abstract
AbstractA new internal eight‐band wireless wide area network (WWAN)/long‐term evolution (LTE) handset antenna comprising a small antenna ground and two coupled‐fed 0.25‐wavelength loop antennas disposed on two sides of the antenna ground is presented.In one loop antenna, a chip inductor is embedded to result in dual‐resonance excitation of its 0.25‐wavelength loop mode and also to adjust the antenna's loading effects on the excited resonant modes at higher frequencies contributed by the other loop antenna. The chip inductor loading greatly helps the proposed antenna in achieving two wide operating bands for the desired WWAN/LTE operation in the 704–960 and 1710–2690 MHz bands. The proposed antenna is especially suitable to be mounted on top of a protruded ground extended from the main ground of the handset to accommodate a universal series bus connector, which serves as a data port of the handset. Details of the proposed antenna are described. Radiation characteristics and specific absorption rate of the antenna are also presented and discussed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1154–1159, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26788
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