DocumentCode :
1361730
Title :
Multiple Antenna Systems With Inherently Decoupled Radiators
Author :
Pelosi, Mauro ; Knudsen, Mikael Bergholz ; Pedersen, Gert Frølund
Author_Institution :
Dept. of Electron. Syst., Aalborg Univ., Aalborg, Denmark
Volume :
60
Issue :
2
fYear :
2012
Firstpage :
503
Lastpage :
515
Abstract :
In multiple antenna systems mutual coupling needs to be minimized. We propose an alternative novel decoupling technique, investigating several multiple antenna configurations for small handsets through measurements and numerical simulations. The influence of different novel designs on performance metrics such as total loss, antenna isolation and envelope correlation coefficient are investigated. By varying antenna impedance bandwidth and antenna location with respect to the handset, both planar inverted F antenna (PIFA) and inverted F antennas (IFA) were investigated in different UMTS frequency bands in proximity with the user´s body. Results show that antennas may experience very different losses and envelope correlation coefficients depending on their relative position with respect to the handset, as the influence of the user´s hand is not symmetrical in most cases. Narrow-band antennas are inherently decoupled when integrated on the same handset, while also other parameters such as frequency duplex distance and interaction with the user´s body influence the mutual coupling.
Keywords :
planar inverted-F antennas; antenna impedance bandwidth; antenna isolation; antenna location; decoupling technique; envelope correlation coefficients; inherently decoupled radiators; multiple antenna systems; mutual coupling; narrow-band antennas; performance metrics; planar inverted F antenna; total loss; 3G mobile communication; Antenna measurements; Antennas; Bandwidth; Impedance; Resonant frequency; Telephone sets; Hand phantom; isolation; multiple input multiple output (MIMO) systems; small antennas;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2173437
Filename :
6060886
Link To Document :
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