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The design of a new mutual coupling compensation network for a small and compact-size receiving monopole array is presented. This is the first example for the experimental realization of mutual coupling compensation in a receiving array by using the receiving mutual impedances. The compensation network is designed on a printed circuit board substrate using only passive circuit components to minimize the additional circuit noise. Its output voltages are carefully measured and verified to satisfy the requirements. Its compensation function is experimentally demonstrated with a two-element monopole array in a directional-of-arrival estimation example using the MUSIC algorithm. The experimental results confirm the effectiveness and accuracy of using the receiving mutual impedances in mutual coupling analysis.
Microwave Theory and Techniques, IEEE Transactions on (Volume:59 , Issue: 9 )
Date of Publication: Sept. 2011