Mutual Coupling Compensation in Receiving Arrays and Its Implementation on Software Defined Radios


Khan S., Sajjad H., ÖZDEMİR M. K., Arvas E.

2020 International Applied Computational Electromagnetics Society Symposium, ACES-Monterey 2020, California, United States Of America, 27 - 31 July 2020 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.23919/aces49320.2020.9196055
  • City: California
  • Country: United States Of America
  • Keywords: Direction of Arrival, LabView, Mutual Coupling, Receiving Antenna Arrays, SDR
  • Istanbul Medipol University Affiliated: Yes

Abstract

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=λ4. 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=λ2 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.