Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

Triple-band Multiplexer for a Low Power Portable Base Station

이동통신 기지국용 삼중대역 멀티플렉서

  • Received : 2014.07.28
  • Accepted : 2014.12.11
  • Published : 2014.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a triple-band multiplexer using a microstrip transmission line was designed and fabricated to make use of a low power portable base station. This multiplexer was used in the triple-band including the cellular, WCDMA and LTE mobile frequency band, and designed to have an insertion loss of 0.8 dB, low SWR of 1.5 in the passband and a band rejection of 15 dB in the stopband. From the measured results obtained by a confidence test for the fabricated multiplexer samples, the maximum insertion loss and SWR of the fabricated multiplexer samples in all passbands of 824-894MHz, 1920-2170 MHz and 2500-2600 MHz were below 0.71 dB and 1.38, and the attenuations in the stopbands were better than 15 dB. Therefore, the triple-band multiplexer has good performance and satisfies the design specifications.

본 논문에서는 마이크로스트립 전송선로를 이용하여 소출력 이동통신 기지국용 삼중대역 멀티플렉서를 설계하고 제작하였다. 이 멀티플렉서는 셀룰러, WCDMA, 그리고 LTE를 포함하는 3개의 이동통신 주파수대역에서 이용 가능하도록 설계하였으며, 통과대역에서는 0.8 dB 삽입손실과 1.5 이하의 정재파비 그리고 차단대역에서는 15dB 이상의 대역저지 특성을 가지도록 설계하였다. 제작된 삼중대역 멀티플렉서 시료로부터 얻어진 신뢰성 테스트의 결과, 모든 시료의 제반 특성이 통과 대역 824~894 MHz, 1920~2170 MHz, 2500~2690 MHz에서 최대 삽입손실 0.71dB, 정재파비 1.38, 저지대역 감쇄 15 dB 이상을 보임으로써 우수한 성능과 설계 규격에서 정한 규정을 매우 잘 충족하고 있다.

Keywords

References

  1. M. Zewani, I. C. Hunter, "Design of Ring-Manifold Microwave Multiplexer", Micrwave Symposium Digest, 2006 IEEE MTT-S International, pp. 689-692, 2006. DOI: http://dx.doi.org/10.1109/MWSYM.2006.249726
  2. C. F. Chen, T. Y. Huang, T. M. Shen, R. B. Wu, "A Miniaturized Microstrip Common Resonator Triplexer without Extra Matching Network", Proceedings of Asia-Pacific Microwave Conference, AMPC 2006, pp. 1439-1442, 2006. DOI: http://dx.doi.org/10.1109/APMC.2006.4429677
  3. A. F. Tunc, C. Ulker, A. M. Mungan, O. Ceylan, H. B. Yagci, "Triplexer Design with Hairpin Structure", 19th Telecommunication Forum, TELFOR, pp. 988-991, 2011.
  4. C. W. Tang, C. T. Tseng, "Design of a Packaged Microstrip Triplexer with Star-Junction Topology", Proceedings of the 42nd European Microwave Conference, EuMA, pp. 459-462, 2012.
  5. P. C. Arannibar, P. R. Postigo, A. G. Lamperez, D. S. Vargas "Compact Triplexer with Open Ring Resonators as Microstrip Trisection Bandpass Filters for Asymmetric Response", Microwave and Optoelectronic Conference, 2013 SBMO/IEEE MTT-S International, pp. 1-5, 2013. DOI: http://dx.doi.org/10.1109/IMOC.2013.6646512
  6. H. W. Wu, S. H. Huang, Y. F. Chen, "Compact Microstrip Triplexer Based on Coupled Stepped Impedance Resonator", Micrwave Symposium Digest, 2013 IEEE MTT-S International, pp. 1-3, 2013. DOI: http://dx.doi.org/10.1109/MWSYM.2013.6697516
  7. C. F. Chen, T. M. Shen, T. Y. Huang, R. B. Wu, "Design of Multimode Net-Type Resonators and Their Applications to Filters and Multiplexers", IEEE Transactions on Microwave Theory and Techniques, vol. 59, no. 4, pp. 848-856, 2001. DOI: http://dx.doi.org/10.1109/TMTT.2011.2109392
  8. J. Y. Wu, K. W. Hsu, W. H. Tu, "High-Isolation Microstrip Triplexer Using Multiple-Mode Resonators", IEEE Microwave and Wireless Components Letters, vol. 22, no. 4, pp. 173-175, 2012. DOI: http://dx.doi.org/10.1109/LMWC.2012.2189101
  9. G. L. Matthaei, S. M. Rohlfing, R. J. Force, "Design of HTS, Lumped-Element, Manifold-Type Microwave Multiplexer", IEEE Transactions on Microwave Theory and Techniques, vol. 44, no. 7, pp .1313-1321, 1996. DOI: http://dx.doi.org/10.1109/22.508236
  10. M. Karlsson, A. Serban, J. Osth, Owais, S. Gong, "Frequency Triplexer for Ultra-Wideband Systems(6-9 GHz)", IEEE Transactions on Circuit and Systems-I:Regular Papers, vol. 60, no. 3, pp. 540-547, 2013. DOI: http://dx.doi.org/10.1109/TCSI.2012.2215743
  11. P. H. Deng, M. I. Lai, S. K. Jeng, C. H. Chen, "Design of Matching Circuits for Microstrip Triplexers Based on Stepped-Impedance Resonator", EEE Transactions on Microwave Theory and Techniques, vol. 54, no. 12, pp .4185-4192, 2006. DOI: http://dx.doi.org/10.1109/TMTT.2006.886161
  12. S. Taravati, M. K. Amirhosseini, "Design Method for Matching Circuits of General Multiplexer", IET Microwave Antennas and Propagation, vol. 7, iss. 4, pp. 237-244, 2013. DOI: http://dx.doi.org/10.1049/iet-map.2012.0150