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

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Gain Enhancement of Series-fed Dipole Pair Antenna Using Director and Parasitic Patches

도파기와 기생 패치를 이용한 직렬-급전 다이폴 쌍 안테나의 이득 향상

  • Yeo, Junho (School of Computer and Communication Engineering/Information and Communication Research Center, Daegu University) ;
  • Lee, Jong-Ig (Division of Mechatronics Engineering, Dongseo University)
  • Received : 2017.06.12
  • Accepted : 2017.07.04
  • Published : 2017.10.31
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Abstract

In this paper, the gain enhancement of an SDPA using a director and two parasitic patches is studied. The modified balun is used to increase the bandwidth, whereas the director and two parasitic patches are appended to the SDPA to enhance the gain in the middle and high frequency bands. The effects of the distance between the director and parasitic patches on the antenna performance are analyzed, and the SDPA with a gain over 7 dBi at 1.54-2.99 GHz band is designed. The proposed SDPA is fabricated on an FR4 substrate with a dimension of $90mm(L){\times}135mm(W)$ in order to validate its performance. The fabricated antenna shows a frequency band of 1.56-3.10 GHz for a VSWR < 2, and it is confirmed by measurement that gain maintains over 7 dBi in the frequency range of 1.54-3.00 GHz.

본 논문에서는 한 개의 도파기, 두 개의 기생 패치를 이용하여 이중 직렬-급전 다이폴 쌍 안테나(series-fed dipole pair antenna; SDPA)의 이득을 향상시키는 방법에 관하여 연구하였다. 변형된 밸런을 이용하여 대역폭을 늘리고, 한 개의 도파기와 두 개의 기생 패치를 추가하여 중간 및 고주파수 대역에서 이득을 높였다. 도파기와 기생 패치 사이의 거리에 따른 안테나의 특성 변화를 분석하여 1.55-2.98 GHz 대역에서 7 dBi 이상의 이득을 갖는 SDPA를 설계하였다. 성능 검증을 위해 제안된 SDPA를 $90mm(L){\times}135mm(W)$의 크기로 FR4 기판 위에 제작하였다. 제작된 안테나는 전압 정재파비(voltage standing wave ratio; VSWR)가 2 이하인 대역이 1.56-3.10 GHz으로 나왔다. 또한 1.54-3.00 GHz 대역에서 이득이 7 dBi 이상을 유지하는 것을 확인하였다.

Keywords

References

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