The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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Design and Performance Evaluation of IR-UWB Tapered Slot Antenna for Optimum Impulse Radio Radiation

임펄스 신호 방사를 위한 IR-UWB용 테이퍼 슬롯 안테나 설계 및 성능평가

  • Received : 2012.07.04
  • Accepted : 2012.09.07
  • Published : 2012.10.31
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Abstract

In this paper, design and performance evaluation of Tapered Slot Antenna for IR-UWB which propagates impulse radio is performed. TSA which has directional characteristic in UWB band should have low radiation loss and minimized impulse radiation distortion. In order to achieve these objectives, the paper designed wide band Impedance transformer and microstrip-slotline transit region structured TSA feeder line. By using the fabricated TSA, the radiation pattern was measured in the radio anechoic chamber. Pulse fidelity and distortion equation was induced to evaluate time domain characteristics according to the impulse radiation. Pulse fidelity of Impulse radiation show favorable results more than 93% within ${\pm}30^{\circ}$ beam width.

본 논문에서는 임펄스를 방사하기 위한 IR-UWB용 테이퍼 슬롯 안테나(Tapered Slot Antenna: TSA) 설계와 성능평가에 대해 연구하였다. UWB 대역에서 지향성 특성을 갖는 테이퍼 슬롯 안테나는 낮은 방사손실과, 임펄스 방사왜곡이 최소이어야 한다. 이를 위해 광대역 임피던스 변환기와 마이크로스트립-슬롯라인 천이부 구조를 갖는 테이퍼 슬롯 안테나 급전부를 설계하였다. 설계 및 제작된 테이퍼 슬롯 안테나는 전파 무반사실에서 방사패턴을 측정하였으며, 임펄스 방사에 따른 시간영역 특성을 평가하기 위해 펄스충실도 및 왜곡율 수식을 유도하였다. 제작된 테이퍼 슬롯 안테나의 임펄스 방사에 의한 펄스충실도는 ${\pm}30^{\circ}$ 빔폭 내에서 약 93% 이상의 양호한 결과를 얻었다.

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