동심원 복사구조를 갖는 광대역 원형 링슬롯 마이크로스트립 안테나

Wideband Annular Ring Slot Microstrip Antenna with Concentric Radiating Structure

  • 신호섭 (충북대학교 전기전자컴퓨터공학부) ;
  • 김남 (충북대학교 전기전자컴퓨터공학부) ;
  • 이승엽 (여수대학교 전자통신.전기공학부) ;
  • 안병철 (충북대학교 전기전자컴퓨터공학부)
  • Shin, Ho-Sub (Chungbuk Nat'l University, School of Electrical & Computer Engineering, Division of Information & Communication Engineering) ;
  • Kim, Nam (Chungbuk Nat'l University, School of Electrical & Computer Engineering, Division of Information & Communication Engineering) ;
  • Rhee, Seung-Yeop (Yosu Nat'l University, School of Engineering, Division of Electronic Communication and Electrical Engineering, Electronic Communication Engineering Program) ;
  • Ahn, Bierng-Chearl (Chungbuk Nat'l University, School of Electrical & Computer Engineering, Division of Information & Communication Engineering)
  • 발행 : 2003.09.01

초록

본 논문에서는 동심원 복사구조와 저임피던스 급전선로를 갖는 광대역 원형 링슬롯 안테나를 제안하였다. 이 안테나는 상대유전율 4.3과 두께 1 mm을 가진 FR-4 기판을 가지고 해석되었다. 제안된 안테나의 측정된 10 dB 임피던스 대역폭은 127.2%(2.17∼9.76 GHz)로써 기존의 원형 링슬롯 안테나의 최고 82% 대역폭보다 훨씬 광대역이다. 또한 실험 결과와 시뮬레이션 결과는 잘 일치한다. 그리고 이 안테나는 원형 링슬롯 안테나보다 크기가 24% 작을 뿐만 아니라 전 주파수 대역에서 4 dBi이상의 고이득을 가진다.

The wideband annular ring slot antenna with concentric radiating structure and low impedance feedline has been presented. This antenna has been analyzed in compensation for FR-4 substrate with relative permittivity 4.3 and thickness 1 mm. As the measured 10 dB impedance bandwidth of the proposed antenna is 127.2%(2.17∼9.76 GHz), its bandwidth is much broader than maximum 82% bandwidth of a conventional annular ring slot antenna. Experimental results from 2 to 10 GHz are shown to be in good agreement with the simulation. And this antenna has a high gain above 4 dBi from 2 GHz to 10 GHz as well as a 24% size reduction and 42% area reduction than a circular slot antenna.

키워드

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