Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Bandwidth Enhancement of an Aperture Coupled Microstrip Patch Antenna Using a Shunt Stub

병렬 스터브를 이용한 개구면 결합 마이크로스트립 패치 안테나의 대역폭 확장

  • Koo, Hwan-Mo (School of Electronic Engineering, Soongsil University) ;
  • Yoon, Young-Min (School of Electronic Engineering, Soongsil University) ;
  • Kim, Boo-Gyoun (School of Electronic Engineering, Soongsil University)
  • 구환모 (숭실대학교 정보통신전자공학부) ;
  • 윤영민 (숭실대학교 정보통신전자공학부) ;
  • 김부균 (숭실대학교 정보통신전자공학부)
  • Received : 2011.11.01
  • Accepted : 2012.02.17
  • Published : 2012.02.25
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Abstract

An impedance bandwidth enhancement method of an aperture coupled microstrip patch antenna (ACMPA) using a shunt stub is investigated. The conventional ACMPA with a H-shaped coupling aperture is designed and the electrical parameters for the equivalent circuit of the designed conventional ACMPA are extracted. A method for the enhancement of the impedance bandwidth of the ACMPA using a tuning stub connected in shunt with the feed line is presented. The -10 dB return loss impedance bandwidth of the ACMPA with a shunt stub is increased up to about 14 %. The maximum impedance bandwidth of the corresponding ACMPA without a shunt stub is 5.4 %. The increase of the impedance bandwidth of the ACMPA with a shunt stub compared to that of the corresponding ACMPA without a shunt stub is about 160 %.

병렬 스터브를 이용하여 개구면 결합 마이크로스트립 패치 안테나 (ACMPA)의 임피던스 대역폭을 넓히는 방법에 대해 연구하였다. H-모양의 개구면을 가지는 일반적인 ACMPA를 설계하고 등가회로의 전기적 파라미터를 추출하였다. 급전선로에 병렬 스터브를 삽입하여 ACMPA의 임피던스 대역폭을 확장시키는 방법을 제시하였다. 병렬 스터브를 삽입한 ACMPA의 -10dB 임피던스 대역폭은 최대 약 14 %로 일반적인 ACMPA의 최대 임피던스 대역폭 5.4 %와 비교하여 대역폭이 약 160 % 증가함을 볼 수 있었다.

Keywords

References

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