The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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A Study on a SPDT Switch with High Isolation Using Radial Resonators

방사형 공진기를 이용한 고격리도 SPDT 스위치 연구

  • Yu Ri SO (Dept. of Electronic Convergence Eng., KwangWoon University) ;
  • Yunjian GUO (Dept. of Electronic Convergence Eng., KwangWoon University) ;
  • Jae Gook LEE (Dept. of Electronic Convergence Eng., KwangWoon University) ;
  • Min Jae LEE (Dept. of Electronic Convergence Eng., KwangWoon University) ;
  • Jong Chul Lee (Dept. of Electronic Convergence Eng., KwangWoon University)
  • 소유리 (광운대학교 전자융합공학과) ;
  • 곽운건 (광운대학교 전자융합공학과) ;
  • 이재국 (광운대학교 전자융합공학과) ;
  • 이민재 (광운대학교 전자융합공학과) ;
  • 이종철 (광운대학교 전자융합공학과)
  • Received : 2023.12.13
  • Accepted : 2023.12.21
  • Published : 2023.12.31
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Abstract

This papart proposes single pole double throw (SPDT) switch with six-stage radial stub resonators in the 3.6~4.0 GHz band. The switch was simulated using ADS (Advanced Design Software), a design tool for the wireless communication circuits, and evaluated on a pcb substrate. The measurement results of the radial SPDT switch showed an average 90 dB isolation, and 1.5 dB insertion loss. This isolation characteristic was 20 dB superior to higher than those laboratory or commercial products reported thus far. The proposed SPDT switch is applicable to multi-band RF front-end systems, such as WiMAX, LTE/5G, Wi-Fi, and HyperLAN.

본 논문에서는 3.6 ~ 4.0 GHz 대역의 6단의 방사형 스터브 공진기를 갖는 SPDT(Single Pole Double Throw) 스위치를 제안한다. SPDT 스위치는 무선통신회로 설계 툴인ADS(Advanced Design Software) 시뮬레이션을 통해 pcb 기판 위에 제작되었다. SPDT 스위치 측정결과, 격리도는 평균 90 dB, 삽입 손실은 1.5 dB 정도인 것으로 나타났다. 본 논문에서 제안한 스위치는 현재 연구되어 있거나 상용화 되어 있는 비슷한 구조의 스위치들보다 해당 주파수 대역에서 평균 20dB 이상의 고격리도를 나타내고 있다. 제안된 SPDT 스위치는 WiMAX, LTE/5G, WiFi 및 HyperLAN과 같은 다중 대역 RF front-end 시스템에 적용 가능하다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 IITP의 지원을 받아 수행되었으며 (No. 2022-0-00153, 빔포밍 경로 분산을 이용한 AI 네트워크관리 기반 인빌딩용 O-RU 개발 (#1711160494)), 2023년도 광운대학교 우수연구자 사업의 지원을 받았습니다 (2023-0437).

References

  1. Bakhit, A. A. and Wong, P. W.(2013), "Switchable microwave band-stop to all pass filter using stepped impedance resonator", Progress In Electromagnetics Research B, vol. 52, pp.99-115. https://doi.org/10.2528/PIERB13033102
  2. LGU+, https://post.naver.com/viewer/postView.naver?volumeNo=34512609&memberNo=1217380&vType=VERTICAL, 2022.09.22.
  3. March, S. L.(1985), "Analyzing Lossy Radial-Line Stubs (Short Papers)", IEEE Transactions. Microwave Theory and Techniques, vol. 33, no. 3, pp.269-271. https://doi.org/10.1109/TMTT.1985.1132997
  4. Naglich, E. J., Lee, J., Peroulis, D. and Chappell, W. J.(2012), "Switchless Tunable Bandstop-to-All-Pass Reconfigurable Filter", IEEE Transactions. Microwave Theory and Techniques, vol. 60, no. 5, pp.1258-1265. https://doi.org/10.1109/TMTT.2012.2188723
  5. SAMSUNG, https://www.samsung.com/global/business/networks/insights/white-papers/open-ran-the-open-road-to-5g/, 2019.07.08.
  6. Shairi, N. A., Ahmad, B. H. and Wong, P. W.(2013), "Bandstop to allpass reconfigurable filter technique in spdt switch design", Progress in Electromagnetics Research C, vol. 39, pp.265-277. https://doi.org/10.2528/PIERC13040313
  7. Shairi, N. A., Ahmad, B. H. and Wong, P. W.(2013), "SPDT discrete switch design using switchable radial stub resonator for WiMAX and LTE in 3.5 GHz band", IEEE International RF and Microwave Conf. (RFM).
  8. Shairi, N. A., Ahmad, B. H. and Wong, P. W.(2014), "Switchable matched ring resonator in SPDT discrete switch design for WiMAX and LTE in 3.5 GHz band", Asia-Pacific Microwave Conf.
  9. Shairi, N. A., Ahmad, B. H., Zakaria, Z. and Wong, P. W.(2012), "Single Pole Double Throw Discrete PIN Diode Switch with Switchable Quarter Wave Stub Resonator", International Conf. Communications and Mobile.
  10. Shairi, N. A., Zakaria, Z. A., Zobilah, M. S., Ahmad, B. H. and Wong, P. W.(2016), DESIGN OF SPDT SWITCH WITH TRANSMISSION LINE STUB RESONATOR FOR WIMAX AND LTE IN 3.5 GHZ BAND, Asian Research Publishing Network(ARPN).
  11. Wbridge, https://www.wbridge.or.kr/platform/careersport/info/selectTrendDetail.do?ntt_sn=415, 2023.02.24.
  12. Zhou, K., Zhou, J. and Xu, Z.(2012), "Design of a high performance RF transceiver for TDD-LTE system", Proc. IEEE MTT-S Int. Microwave Symp. Dig., pp.1-3.