Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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A Design and Manufacture of Modified Rhombus Slot UWB antenna with Fork-shaped-Feedline

포크 모양의 급전 구조를 갖는 변형된 마름모 슬롯 UWB 안테나 설계 및 제작

  • Ha, Sung-Jea (Department of Information & Communication System) ;
  • Yoon, Joong-Han (Department of Electronic Engineering, Silla University)
  • Received : 2016.03.11
  • Accepted : 2016.04.30
  • Published : 2016.07.31
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Abstract

In this paper, we propose a modified rhombus slot UWB(Ultra Wide Band) antenna with fork-shaped feeding structure. The proposed antenna is modified rhombus slot structure and fork-shaped feeding structure to get ultra-wideband characteristics for UWB communication. Modified rhombus slot structure consists of slot shaped which eliminated upper and lower part of the basic rhombus slot. The antenna is designed on an FR-4 substrate of which the dielectric constant is 4.4, and its overall size is $34mm(W_1){\times}34mm(L_1){\times}1mm(t)$, and its slot antenna size is $30mm(W_2){\times}16.75mm(L_3+L_4)$. After carrying out the simulation of each parameters, optimized values are obtained. From the fabricated and measured results, return loss of the proposed antenna satisfied Return Loss -10dB in 3.1 ~ 10.6 GHz. And measured results of gain and radiation patterns characteristics displayed for operating bands.

본 논문에서는 포크 모양의 급전 구조를 갖는 변형된 마름모 슬롯 UWB(Ultra Wide Band) 안테나를 제안하였다. 제안된 안테나는 초광대역 특성을 얻기 위해서 마름모 형태의 슬롯 구조와 포크 모양의 급전 구조로 설계하였다. 변형된 마름모 구조는 기존 마름모 구조에서 상단과 하단 영역이 제거하여 설계하였다. 제안된 안테나는 $34mm(W_1){\times}34mm(L_1){\times}1mm(t)$의 유전율 4.4인 FR-4 유전체 기판 위에 설계되었으며 전체 슬롯 크기는 $30mm(W_2){\times}16.75mm(L_3+L_4)$을 갖도록 설계하였다. 각 파라메타에 대한 시뮬레이션을 진행하여 최적화 수치를 얻었다. 제작 및 측정 결과로부터 제안된 안테나의 반사손실 특성은 3.1 ~ 10.6 GHz UWB 대역에서 -10dB 이하의 값을 갖으며 또한 측정된 이득과 방사패턴 특성 결과를 얻었다.

Keywords

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