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 Compact CPW-fed Antenna consisted of Three Folded Patches for Mobile Handsets

이동통신용 단말기를 위한 3개의 폴디드 패치로 이루어진 소형 CPW 안테나

  • Choi, In-Tae (Information Communication and Radiocommunication Engineering Major, School of Electronic and Information, Kunsan National University) ;
  • Shin, Ho-Sub (IT Convergence and Communication Engineering Major, School of IT, information and Control Engineering, Kunsan National University)
  • Received : 2015.10.12
  • Accepted : 2015.11.23
  • Published : 2015.12.31
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Abstract

In this paper, the compact antenna with three folded patches for use in a number of bands of LTE, WCDMA, US-PCS, and WLAN at the same time is proposed. As the changes in widths of the 3 patches to widen the insufficient bandwidth are given, it is optimized for $S_{11}$<-6dB(VSWR<3). The CPW with a number of advantages is used in the proposed antenna. The proposed antenna is designed and fabricated with FR4 substrate to the size of $44.9{\times}35{\times}1mm^3$. Fabricated antenna has within $S_{11}$<-6dB under operating bands. And measured characteristics of radiation patterns and gains are shown under operating bands.

본 논문에서는 LTE, WCDMA, US-PCS, WLAN의 여러 대역을 동시에 사용하기 위한 3개의 폴디드 패치 형태의 선로를 이용한 소형 안테나를 제안한다. 3개의 패치들로 부족한 대역폭을 넓히기 위하여 패치들의 폭에 변화를 주어 $S_{11}$<-6dB(VSWR<3)에서 사용할 수 있도록 최적화하였다. 제안된 안테나는 동일평면에 복사소자와 접지면을 갖고 회로와 직접화가 용이한 CPW를 사용하였으며, $44.9{\times}35{\times}1mm^3$의 크기로 FR4 기판을 가지고 설계 및 제작하였다. 제작된 안테나는 동작대역에서 $S_{11}$<-6dB 특성을 만족하였다. 또한 측정된 복사패턴과 이득의 특성을 나타내였다.

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References

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