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Comparison of mutual coupling compensation to dummy columns in adaptive antenna systems

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1 Author(s)
Lindmark, B. ; Dept. of Signals, R. Inst. of Technol., Stockholm, Sweden

Compensation for mutual coupling in antenna arrays by matrix multiplication is compared to the use of dummy elements. A least squares estimation of the coupling matrix is made, including co- and cross-polar coupling. We show that 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, signal-to-interference reduction, and cross-polarization level. In all aspects, the performance of the compensation method exceeds or equals the use of dummy elements.

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Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 4 )