Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561157
