Abstract
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 language | English |
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Journal | IEEE Transactions on Microwave Theory and Techniques |
Early online date | 27 Oct 2021 |
DOIs | |
Publication status | E-pub ahead of print - 27 Oct 2021 |
Keywords
- 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