Title :
Compensation of mutual coupling in dual polarized arrays
Author_Institution :
Dept. of Signals, Sensors, & Syst., R. Inst. of Technol., Stockholm, Sweden
Abstract :
Mutual coupling in dual polarized antenna arrays is compensated by matrix multiplication. Using farfield measurement data, a least squares estimation of the coupling matrix is made including co- and cross-polar coupling. A compensation for measurements off the phase center is important as well as a proper assumption of the ideal element pattern. We study the performance of a dual polarized patch array with respect to far-field phase error and cross-polarization level and the performance of the compensation method exceeds or equals the use of dummy elements.
Keywords :
antenna radiation patterns; array signal processing; compensation; electromagnetic coupling; least squares approximations; matrix multiplication; microstrip antenna arrays; array signal processing; coupling matrix; cross-polar coupling; cross-polarization level; dual polarized antenna arrays; far-field data; ideal element pattern; least squares estimation; matrix multiplication; mutual coupling compensation; patch array; phase center; phase error; Adaptive arrays; Antenna arrays; Antenna measurements; Aperture antennas; Linear antenna arrays; Mobile antennas; Mutual coupling; Phase measurement; Polarization; Sensor arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220054