Evaluation and optimization of the specific absorption rate for multi-antenna systems

Author

Wang, Minshen ; Lin, Li ; Chen, Ji ; Jackson, David ; Kainz, Wolfgang ; Qi, Yihong ; Jarmuszewski, Perry

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Houston, Houston, TX, USA

fYear

2010

fDate

11-17 July 2010

Firstpage

1

Lastpage

4

Abstract

A decomposition and superposition technique is developed for the SAR analysis of a multiple antenna system. Upper and lower bounds for the total SAR can be calculated if the vector electric field from each antenna is available, while a most conservative SAR upper bound can be calculated if only SAR data from each antenna is available. A method for increasing antenna reception while decreasing peak spatial SAR was also shown. This technique combined with a beam-forming technique can be used to maximize the overall system performance and minimize the peak spatial specific absorption rate for multi-antenna wireless systems.

Keywords

antenna arrays; array signal processing; synthetic aperture radar; SAR analysis; antenna reception; beamforming technique; decomposition technique; multi-antenna systems; multi-antenna wireless systems; multiple antenna system; specific absorption rate; superposition technique; vector electric field; Antenna measurements; Antennas; Electric fields; Electric variables measurement; Numerical models; Optimization; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE

Conference_Location

Toronto, ON

ISSN

1522-3965

Print_ISBN

978-1-4244-4967-5

Type

conf

DOI

10.1109/APS.2010.5561157

Filename

5561157