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Articles

Planar small-size LTE/WWAN tablet computer antenna with eight-band operation

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Pages 1032-1046 | Received 02 Sep 2014, Accepted 02 Mar 2015, Published online: 28 Apr 2015
 

Abstract

By attaching a C-shaped parasitic monopole strip on the backside of the antenna, a novel compact eight-band monopole antenna (MA) is proposed and embedded in the LTE/WWAN tablet computer. The operating impedance bandwidths of 264/997 MHz can be obtained across the LTE/WWAN bands, respectively. Given that the overall antenna size is only 35 × 10 × 0.8 mm3, the proposed planar MA provides more than 22% reduction in antenna size over that of the conventional ones. Meanwhile, this small-size MA provides the measured peak gains and antenna efficiencies of 2.0/3.2 dBi and 60/66% for the LTE/WWAN bands, respectively. Additionally, to fulfill the limitation of 1.6 W/kg of the 1-g body specific absorption rate (SAR) requirement for mobile device applications, the proposed planar compact MA is deposited inside the tablet computer for the study of radiating performance.

Additional information

Funding

This work was supported by Ministry of Science and Technology (MOST) of the Republic of China [grant number NSC101-2221-E-022-011-MY2].

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