Mutual Coupling Compensation in Receiving Arrays and Its Implementation on Software Defined Radios
Keywords:
Direction of Arrival, LabView, Mutual Coupling, Receiving Antenna Arrays, SDRAbstract
Mutual coupling is compensated in a four element uniform linear receiving array using software defined radios. Direction of arrival (DoA) is estimated in real-time for the array with spacing d=λ/4. The decoupling matrix was measured using a VNA for only one incident angle. After compensation the error in DoA estimation was reduced to 5%. Comparing the DoA results with d=λ/2 spaced Uniform Linear Array (ULA), 1:2% error was observed. Although, the experiment was performed indoors with a low SNR, the results show a substantial improvement in the estimated DoA after compensation.
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References
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