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 DLP Array Antenna for 3.5 GHz Band

3.5 GHz 대역에서 동작하는 DLP 배열 안테나의 설계 및 제작

  • Yoon, Joong-Han (Division of Smart Electrical and Electronic Engineering, Silla University)
  • 윤중한 (신라대학교 스마트전기전자공학부)
  • Received : 2021.09.08
  • Accepted : 2021.12.17
  • Published : 2021.12.31
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Abstract

In this paper, we propose DLP(Dual Linear Polarization) array antenna for 3.5 GHz band. The proposed antenna has 1×4 array antenna and design two port network. A cross shape is inserted at the bottom of the patch for impedance matching. The size of each patch antenna is 18.85 mm(W1)×18.85 mm(L1), array antenna is designed on the FR-4 substrate, which is 236.0 mm(W)×60.2 mm(L), thickness (h) 1.6 mm, and the dielectric constant is 4.3. From the fabrication and measurement results, bandwidths of 70 MHz (3.54 to 3.61 GHz) for input port 1, 75 MHz (3.55 to 3.625 GHz) for input port 2 are obtained on the basis of -10 dB return loss and transmission coefficient S21 is under the -20 dB. Also, cross polarization between two port obtained.

본 논문에서는 3.5 GHz 대역에 적용 가능한 DLP(Dual Linear Polarization) 배열 안테나를 제안하였다. 제안된 안테나는 1×4 배열 안테나로 구성되어 있으며 두 개의 입력포트를 갖도록 설계하였다. 또한 임피던스매칭을 위해 십자가 구조가 패치 아래 부분과 연결하였다. 각 안테나는 18.85 mm(W1)×18.85 mm(L1)의 크기를 갖으며 1×4 배열 안테나 전체 구조는 236.0 mm(W)×60.2 mm(L)의 크기를 갖으며 두께(h) 1.6 mm, 그리고 비유전율이 4.3인 FR-4 기판 위에 설계하였다. 제작 및 측정결과로부터, -10 dB 반사손실을 기준으로 입력포트 1에서 70 MHz (3.54~3.61 GHz), 입력포트 2에서 75 MHz (3.55~3.625 GHz)의 대역폭을 얻었으며 전달계수 S21은 -20dB 이하의 값을 얻었다. 또한 두 입력단자 사이의 교차편파의 값을 얻었다.

Keywords

Acknowledgement

본문은 산업통상자원부의 재원으로 한국산업기술관리평가원(KEIT)의 지원을 받아 수행된 연구결과 중 일부임.(소재부품패키지형기술개발사업-초고주파 소재를 이용한 중계기/스몰셀 안테나 모듈개발, 과제번호 : 20010608)

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