The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Study on Multibeam Forming with Improved Accuracy of Steering Angle and Sidelobe Control

높은 조향 정확도 및 부엽 제어가 가능한 다중 빔 형성 연구

  • Chi, Sang Wook (Department of Electronic and Electrical Engineering,, Hongik University) ;
  • Lee, Chang-Hyun (Department of Electronic and Electrical Engineering,, Hongik University) ;
  • Lee, Jeong-Hae (Department of Electronic and Electrical Engineering,, Hongik University)
  • 지상욱 (홍익대학교 전자전기공학과) ;
  • 이창현 (홍익대학교 전자전기공학과) ;
  • 이정해 (홍익대학교 전자전기공학과)
  • Received : 2017.12.21
  • Accepted : 2018.05.15
  • Published : 2018.06.30
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Abstract

Herein, several multibeam forming methods that can be applied to microwave wireless power transmission are presented. Because the conventional multibeam forming methods do not consider an active element pattern(AEP), an intended beam shape will contain a steering angle error when applied to an actual system. To solve this problem, a method of considering the average of the AEP and a method of considering all the AEPs by the modified Fourier series method have been proposed. We confirmed that the proposed method reduces the error with the intended beam shape in the multibeam formation. In addition, for the side lobe level(SLL) and null control, a method of multibeam forming by applying the superposition principle to the Dolph-Tschebyscheff method is proposed. We also confirmed that SLL control can be simultaneously achieved with the multibeam formation.

본 논문에서는 마이크로파 무선전력전송에 적용될 수 있는 여러 다중 빔 형성 방법을 제안한다. 기존의 다중 빔 형성방법은 능동소자패턴(active element pattern: AEP)을 고려하지 않기 때문에 실제 시스템에 적용 시 의도한 빔 형성과 오차가 발생하게 된다. 이를 해결하기 위해 능동소자패턴의 평균을 고려하는 방법과, 변형된 푸리에 급수 방법을 통해 모든 능동소자패턴을 고려하는 방법이 제안되었다. 또한, 부엽과 null 제어를 위하여 Dolph-Tschebyscheff 방법에 중첩의 원리를 적용하여 다중 빔을 형성하는 방식을 제안하였다. 제안된 방식을 사용하여 다중 빔 형성 시 의도된 빔 형성과의 오차가 감소하는 것을 확인하였으며, 다중 빔 형성을 하며 부엽 제어를 동시에 할 수 있는 것을 확인하였다.

Keywords

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