The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Implementation of LTCC Triplexer Band Based on Conjugate Matching Method

복소 매칭 방법을 이용한 LTCC Triplexer 구현

  • 하상훈 (중앙대 공대 전자전기공학부) ;
  • 김형석 (중앙대 공대 전자전기공학부)
  • Published : 2007.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a compact triplexer has been implemented for Cellular/GPS/USPCS applications. In order to realize the proposed triplexer, we use a low-temperature co-fired ceramic (LTCC) substrate to enable a fully compact integrated module using a multi-layer high-density architecture, and conjugate-match the channels instead of the open matching technique. The three dimensional design capability of LTCC substrates can reduce the overall size of the triplexer, resulting in dimensions on the order of $3.2\;mm\;{\times}\;2.5\;mm\;{\times}\;1\;mm$. The measured result shows that the triplexer has, in Cellular/GPS/USPCS bands, the insertion loss of less than 0.5dB, less than 1.7dB, and less than 0.9dB in order. Also, the triplexer has an isolation of more than 15dB in the cellular and USPCS bands and an isolation of more than 20dB in the GPS band.

Keywords

References

  1. T. Ohno, K. Wada, and O. Hashimoto, 'A class of a planar triplexer by manipulating multiple attenuation poles,' in Proceedings of the 34th European Microwave Conference, 2004, pp. 625-628
  2. D. Orlenko, G. Sevskiy, T. Kerssenbrock, and P. Heide, 'LTCC Triplexer for WiMax applications,' in Proceedings of the 35th European Microwave Conference, 2005, pp. 97-100
  3. D. Orlenko, K. Markov, S. Royak, A. Gordiyenko, O. Chemyakov, T. Kerssenbrock, G. Sevskiy, and P. Heide, 'Novel high-rejection LTCC diplexers for dual-band WLAN applications,' in IEEE MTT-S Int. Microwave Symp. Dig., June 2005, pp. 727-730
  4. E. Kim, Y. S. Lee, C. S. Yoo, W. S. Lee, and J C. Park, 'A power amplifier module with fully embedded passive components in a LTCC substrate for K-PCS band mobile phone,' in Proceedings of the 33rd European Microwave Conf., vol. 1, 2003, pp. 253-256
  5. Y. Lin, C. Liu, K. Li, and C. Chen, 'Design of an L TCC tri-band transceiver module for GPRS mobile applications,' in IEEE MTT-S Int. Microwave Symp, Dig., June 2004, pp. 633-636
  6. 하상훈, 김동수, 조현민, 김형석, 강남기, 김준철 'Cellular/GPS/USPCS 어플리케이션을 위한 LTCC Triplexer', 마이크로파 및 전파전파 학술대회 논문지, Vol.29 No.1 p.p. 91-94 2006 May
  7. 오재욱, 김준철, 김동수, 조현민, 김형석, 박종철 'CDMA/GPS 이중대역 Front End 모듈' 마이크로파 및 전파전파 학술대회 논문지, Vol.29 No.1 p.p. 95-98. 2006 May