Resonant manifold multiplexers

Yang Yu, Yi Wang, Cheng Guo, Qingsha S. Cheng, Ming Yu

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This article presents a new compact multiplexer structure and its design approach, based on a novel resonant manifold. Different from typical transmission-line-based manifold multiplexers, the proposed manifold junction is formed of coupled resonators, so that the manifold also contributes to the filtering poles and selectivity in the passbands. The all-resonator configuration achieves a more compact footprint than the conventional manifold. This multiport filtering network can be represented by a single coupling matrix which can be obtained by using a robust optimization-based method. Tailored channel frequency allocation schemes are presented for the proposed multiplexers with a different number of channels. To validate the proposed concept, a triplexer and a five-channel multiplexer, both at X-band, are designed and tested using rectangular waveguide technology. Good agreements have been achieved between the measurement and simulations. Comparisons have been made with conventional multiplexers.
Original languageEnglish
JournalIEEE Transactions on Microwave Theory and Techniques
Early online date27 Oct 2021
Publication statusE-pub ahead of print - 27 Oct 2021


  • All-resonator structure
  • Couplings
  • Manifolds
  • Optimization
  • Radio spectrum management
  • Resonant frequency
  • Resonators
  • Transmission line matrix methods
  • coupling matrix theory microwave multiplexers
  • manifold multiplexers
  • optimization
  • step tune method.

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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