The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Analysis for Performance Enhancement of TMA using Apodized Time Sequence

Apodized 시계열을 사용한 TMA의 성능 향상에 대한 분석

  • 호광춘 (한성대학교 정보통신공학과)
  • Received : 2018.06.24
  • Accepted : 2018.08.10
  • Published : 2018.08.31
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Abstract

In this paper, the performance enhancement of a time-modulated array is described. The proposed time-modulated array is based on the topology of a conventional array but uses apodized discrete time switching, instead of phase shifters, to achieve beamforming functions with side-band suppression. Numerical simulations are carried out to examine the performance of this beamforming system based on apodized time sequence of 16 elements linear array. Numerical results reveal that the proposed method provides a more flexible and accurate way of producing desired beampatterns with low or ultralow side-lobe level (SLL) compared with the conventional methods.

본 논문에서는 시간 조절 배열(time-modulated array: TMA)의 성능향성에 대하여 논의하였다. 제안한 시간 조절 배열은 전형적인 배열의 topology를 기반으로 하지만, side-band suppression을 갖는 beamforming 기능을 성취하기 위하여 위상 shifter 대신 apodized 이산 시간 스위치를 사용하였다. 16-소자 선형 배열의 apodised 시계열에 기초한 beamforming 시스템의 성능을 분석하기 위하여 수치해석을 수행하였다. 수치해석 결과 제안한 기법은 전형적인 기법들과 비교하여 낮거나 매우 낮은 수준의 side-lobe level (SLL)을 갖는 빔 패턴을 생성하며, 보다 유연하고 정확한 방법을 제공하는 것으로 나타났다.

Keywords

References

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