The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Design and Fabrication of Dual Linear Polarization Patch Antenna with Aperture Coupled Feeding Structure

개구 결합 급전 구조를 갖는 이중 선형편파 패치 안테나의 설계 및 제작

  • Joong-Han Yoon (Department of Electrical and Electronic Engineering, Silla University)
  • 윤중한 (신라대학교 전기전자공학과)
  • Received : 2023.09.12
  • Accepted : 2023.12.27
  • Published : 2023.12.31
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Abstract

In this paper, we propose DLP(Dual Linear Polarization) antenna with aperture coupled feeding structure for private network. The proposed antenna has general aperture coupled structure and design two port between top and bottom layer to obtain the enhanced isolation. Also, The size of each substrate(top and bottom layer) is 34.0 mm(W)×34.0 mm(L), which is designed on the FR-4 substrate which thickness (h) is 1.0 mm, and the dielectric constant is 4.4. Also, the size of patch antenna is 12.70 mm(W2)×14.60 mm(L3), and it is located on the top layer. The size of feeding line is 24.0 mm(W2)×1.6 mm(L3), and is located at the bottom layer Also, rectangular slot is located on the ground plane between top layer and bottom layer. From the fabrication and measurement results, bandwidths of 300 MHz (4.52 to 4.82 GHz) for feeding port 1, and 170 MHz (4.65 to 4.82 GHz) for feeding port 2 are obtained on the basis of -10 dB return loss and transmission coefficient S21 is got under the -30 dB. Also, cross polarization isolation between each feeding port obtained

본 논문에서는 4.7 GHz 특화망 대역에 적용할 수 있는 개구결합 급전을 갖는 이중 선형편파 안테나를 제안하였다. 제안된 안테나는 격리도 향상을 위해 일반적인 개구 결합급전을 갖고 상층과 하층에 각각 급전점을 갖도록 설계하였다. 각각의 기판의 크기는 34.0 mm×34.0 mm (W×L)이며 두께(h) 1.0 mm, 그리고 비유전율이 4.4인 FR-4 기판을 사용하였다. 또한 상층의 윗면에 12.7 mm×14.6 mm (W2×L3)의 패치를, 하층의 아랫면에 24.0mm×1.6 mm의 급전선로를, 접지면에 1.0 mm×7.7 mm(S×T)의 크기를 갖는 슬롯을 설계하여 패치로 급전되도록 하였다. 제작 및 측정 결과로부터, -10 dB 반사손실을 기준으로 배열 안테나의 경우, 입력포트 1에서 300.0 MHz (4.52~4.82 GHz), 입력포트 2에서 170.0 MHz (4.65~4.82 GHz)의 대역폭을 얻었으며 전달계수 S21은 -30 dB 이하의 값을 얻었다. 또한 각 급전포트에서의 편파분리도를 얻었다.

Keywords

Acknowledgement

본문은 산업통상자원부의 재원으로 한국산업기술관리평가원(KEIT)의 지원을 받아 수행된 연구결과 중 일부임. (소재부품기술개발사업-초고주파·저잡음·저손실 LTCC 필터, 액티브 안테나 및 이를 적용한 5G 특화망용 중계 모듈 개발, 과제번호 : 20022409).

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