Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 14, Issue -, Pages 523-526Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2014.2371020
Keywords
Decoupled antennas; mobile phones; multiband antennas; multiple-input-multiple-output (MIMO) systems
Funding
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2012ZX03003002-004]
- National Natural Science Foundation of China [61371010, 60971005]
- [9140A33020411JW27]
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A decoupled dual-antenna system for Long Term Evolution (LTE)/Wireless Wide Area Network (WWAN) smart-phone applications is presented. The proposed dual-antenna system is composed of two symmetric antenna elements and two crossed neutralization lines. The antenna element of the proposed dual-antenna system consists of a driven branch and a parasitic ground branch, generating a couple of resonant modes. The dual-antenna system incorporates two crossed neutralization lines to reduce the mutual coupling between the two closely spaced antenna elements. A measured impedance bandwidth with lower than 6 dB over 702-968, 1698-2216, and 2264-3000 MHz is obtained. Within the operating bands, the measured is lower than 10 dB. Based on the measured 3-D radiation patterns, several important figures of merit for the diversity performance of the dual-antenna system are calculated, including the envelop correlation coefficient, the mean effective gain, and the diversity gain, and good results are obtained.
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