Journal of the Microelectronics and Packaging Society (마이크로전자및패키징학회지)

The Korean Microelectronics and Packaging Society (한국마이크로전자및패키징학회)
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A Study on 8 × 4 Dual-Polarized Array Antenna for X-Band Using LTCC-Based ME Dipole Antenna Structure

LTCC 기반 ME Dipole 안테나 구조를 활용한 X-Band 용 8 × 4 이중편파 배열안테나에 관한 연구

  • Jung, Jae-Woong (ICT.device packaging Research Center, Korea Electronics Technology Institute (KETI)) ;
  • Seo, Deokjin (ICT.device packaging Research Center, Korea Electronics Technology Institute (KETI)) ;
  • Ryu, Jong-In (ICT.device packaging Research Center, Korea Electronics Technology Institute (KETI))
  • 정재웅 (한국전자기술연구원 ICT.디바이스패키징연구센터) ;
  • 서덕진 (한국전자기술연구원 ICT.디바이스패키징연구센터) ;
  • 유종인 (한국전자기술연구원 ICT.디바이스패키징연구센터)
  • Received : 2021.09.08
  • Accepted : 2021.09.29
  • Published : 2021.09.30
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Abstract

In this paper, the Magneto-Electric(ME) dipole array antenna with dual-polarization in the X-Band is proposed and it is implemented and measured. The proposed array antenna is composed of 32 single ME dipole antenna and a Teflon PCB. 1 × 1 ME dipole antenna is implemented dual-polarization by radiating vertical polarization and horizontal polarization from two pairs of radiators. 2-port feeding structures are realized by lamination process using LTCC. And, each port independently feeds the radiator through a Γ-shaped feeding strip with isolation between ports. The Teflon PCB used in the antenna array has a 4-layer structure, and 2-port is fed through the top and bottom layers. The λg/4 transformer is applied to the transmission line of the Teflon PCB for impedance matching of the arrayed antenna and the Teflon PCB, and the optimal parameters are obtained through simulation. The measured maximum antenna gains of port 1 was 18.2 dBi, Cross-pol was 1.0 dBi. And the measured maximum antenna gains of port 1 was 18.1 dBi, Cross-pol was 3.2 dBi.

본 논문에서는 X-Band 대역에서 이중 편파 특성을 갖는 Magneto-Electric(ME) dipole 배열안테나를 제안하고, 이를 Low Temperature Co-fired Ceramic (LTCC) 공정을 이용하여 구현 및 측정하였다. 제안된 배열안테나는 LTCC로 구성된 1 × 1 ME dipole 안테나 32 개를 Teflon PCB에 배열하여 8 × 4 배열 안테나로 구성된다. 1 × 1 ME dipole 안테나는 두 쌍의 방사체에서 각각 수직 편파와 수평 편파를 방사하여 이중 편파를 구현하게 된다. 2개의 Port 급전은 LTCC를 이용한 적층 공정을 통해 구현하였으며, 각 각의 Port는 포트 간 격리도를 확보하기 위해 Γ-shaped feeding strip을 통해 독립적으로 방사체에 급전된다. 안테나 배열에 사용된 Teflon PCB는 4층 구조로 형성하였으며, 상단 면과 하단 면을 통해 2개의 Port가 급전된다. 그리고 배열되는 안테나와 Teflon PCB의 임피던스 정합을 위해 Teflon PCB의 전송선로에 λg/4 변환기를 적용하였으며 시뮬레이션을 통해 최적 파라미터를 얻었다. 구현된 ME dipole 8 × 4 배열안테나의 크기는 15.5 mm × 11 mm × 4.2 mm이며, Port 1 급전 시 측정된 방사 최대 이득은 18.2 dBi, cross-pol은 1.0 dBi이고 Port 2 급전 시 측정된 방사 최대 이득은 18.1 dBi, Cross-pol은 3.2 dBi로 확인하였다.

Keywords

Acknowledgement

이 연구는 2018년도 산업통상자원부 및 산업기술평가관리원(KEIT)의 일환인 "항공기 탑재형 다중밴드 소형 0.3m급 영상레이다 및 지상 빅데이터 분석 시스템 개발" 과제의 지원으로 수행되었습니다(과제번호 20002733).

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