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Accurate design of high-performance diplexers for mobile communication base stations applications

  • Dawei Zhang
  • , Xumin Ding
  • , Qun Wu
  • , Baofu Jia
  • , Bin Yu
  • School of Electronics and Information Engineering, Harbin Institute of Technology
  • University of Electronic Science and Technology of China

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work describes a modified approach for extracting the equivalent circuit parameters, as there are the resonant frequency of each resonator, the coupling bandwidths and the external Qs from multi-port Y-matrix and group delay of the input reflection coefficients. The extractions of equivalent circuit parameters and the fine tuning for three-dimensional simulating models are achieved by utilizing the EM simulating software HFSS. Then, a novel method for designing microwave diplexers is proposed. Compared to the methods existed, all interacting effects are allowed taking into account. One circuit parameter can be related to one dominate geometrical variation in the three-dimensional model. The detailed design steps illustrating the design of a diplexer for mobile communication base stations applications are presented. The designed device with a novel tunable electrical coupling structure is then fabricated. The comparison between measurements and simulations has validated the new design method with high efficiency.

Original languageEnglish
Title of host publication2015 International Symposium on Antennas and Propagation, ISAP 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9784885523038
StatePublished - 4 Apr 2016
Externally publishedYes
EventInternational Symposium on Antennas and Propagation, ISAP 2015 - Hobart, Australia
Duration: 9 Nov 201512 Nov 2015

Publication series

Name2015 International Symposium on Antennas and Propagation, ISAP 2015

Conference

ConferenceInternational Symposium on Antennas and Propagation, ISAP 2015
Country/TerritoryAustralia
CityHobart
Period9/11/1512/11/15

Keywords

  • Y-matrix
  • electrical coupling
  • group delay
  • microwave diplexers
  • multi-port

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