Automated diplexer design with key performance indicator-based objectives

Yang Yu, Bo Liu, Yi Wang, Qingsha S. Cheng

Research output: Contribution to journalArticlepeer-review

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Microwave diplexers are often designed iteratively via manual channel-by-channel or resonator-by-resonator local optimization procedures due to high dimensionality in design variables and the complexity of structures. A one-off automated diplexer optimization method is yet to be developed. To achieve this, other than improved optimizers, an effective objective function (OF) is critical to allow optimizers to find the desired designs. This letter realizes an automated diplexer design by proposing key performance indicator (KPI)-based objectives. The KPIs are extracted from S-parameter responses. An all-resonator diplexer with 22 variables and a Tee-junction diplexer with 23 variables are designed using the proposed method via one-off optimization, showing 100% and 80% success rates, respectively.

Original languageEnglish
Article number9718119
Pages (from-to)827-830
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Issue number7
Early online date21 Feb 2022
Publication statusE-pub ahead of print - 21 Feb 2022

Bibliographical note

Publisher Copyright:


  • Computational modeling
  • Design methodology
  • Key performance indicator
  • Key performance indicators (KPI)
  • Optimization
  • Passband
  • Scattering parameters
  • Wireless communication
  • microwave diplexers
  • objective function (OF)
  • optimization.

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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