Compact Multi-Band PIFAs on a Semi-Populated Mobile Handset With Tunable Isolation

被引:21
作者
Payandehjoo, Kasra [1 ]
Abhari, Ramesh [1 ]
机构
[1] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ H3A 0E9, Canada
关键词
Antenna isolation; antenna mutual coupling; diversity antennas; GSM900; MHz; long term evolution (LTE); multiple-input and multiple-output (MIMO); miniaturization; mobile handsets; printed inverted-F antennas (PIFAs); tunable antennas; ANTENNAS;
D O I
10.1109/TAP.2013.2267718
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this communication, miniaturized tunable two-antenna systems composed of printed inverted-F antennas (PIFAs) are developed for a semi-populated mobile phone handset. The PIFAs are loaded with a series combination of an inductor and a varactor to simultaneously achieve miniaturization and tunability. The compact 32 mm-long PIFAs demonstrate tuning range of more than 240 MHz covering personal telecommunication bands from LTE-band13 to GSM900 MHz. As well a miniaturized tunable parasitic element is integrated in the handset to efficiently suppress coupling between the PIFAs to below -28 dB across the entire operational bandwidth of the antennas. Simulation and measurement results demonstrate the successful implementation of a tunable MIMO system with passive adjustable coupling reduction mechanism for mobile handsets and achievement of a channel capacity profile close to that of an un-correlated system.
引用
收藏
页码:4814 / 4819
页数:7
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