Title :
A Compact Frequency-Reconfigurable Multiband LTE MIMO Antenna for Laptop Applications
Author :
Byeonggwi Mun ; Changwon Jung ; Myun-Joo Park ; Byungje Lee
Author_Institution :
Dept. of Wireless Commun. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
A compact frequency-reconfigurable multipleinput-multiple-output (MIMO) antenna on a laptop is proposed for multiband LTE services. Each MIMO antenna consists of two planar inverted-F antenna (PIFA) elements, using a T-shaped dc line and two p-i-n diodes (D1 and D2), in conjunction with the proximity-coupled feed structure. By effectively minimizing its dimension and its interference with antenna performance, the proposed T-shaped dc line is designed to fit within the proximity-coupled feed structure. The proposed MIMO antenna covers the LTE 17/13 bands (704-787 MHz, VSWR <; 3) at State 1 (D1 and D2: ON state), and the LTE 20/7 bands (791-862 MHz, 2500-2690 MHz, VSWR <; 3) at State 2 (D1 and D2: OFF state). The proposed antenna obtains high isolation (> 20 dB), low envelope correlation coefficient (ECC <; 0.0161), and total efficiency of greater than 51%, for all operating frequency bands.
Keywords :
Long Term Evolution; UHF antennas; antenna arrays; mobile antennas; multifrequency antennas; p-i-n diodes; planar inverted-F antennas; -shaped dc line; PIFA elements; compact frequency-reconfigurable multiband LTE MIMO antenna; envelope correlation coefficient; frequency 2500 MHz to 2690 MHz; frequency 704 MHz to 862 MHz; laptop applications; multiband LTE services; p-i-n diodes; planar inverted-F antenna elements; proximity-coupled feed structure; Antenna measurements; Feeds; Long Term Evolution; MIMO; PIN photodiodes; Portable computers; DC bias circuit; Long Term Evolution (LTE); frequency-reconfigurable antenna; laptop application; multiband antenna; multiple-input–multiple-output (MIMO) antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2339802
