A non-reciprocal bandpass diplexer

Journal ar
International Journal of RF and Microwave Computer-Aided Engineering
  • Volumen: 31
  • Número: 6
  • Fecha: 01 June 2021
  • ISSN: 1099047X 10964290
  • Source Type: Journal
  • DOI: 10.1002/mmce.22592
  • Document Type: Article
  • Publisher: John Wiley and Sons Inc
© 2021 Wiley Periodicals LLCThis letter presents a non-reciprocal diplexer with integrated functions of a conventional bandpass diplexer and two isolators. This is achieved by spatio-temporally modulating the resonator frequencies in a coupled-resonator diplexer. Due to the high channel-to-channel isolation, the diplexer channels can be independently modulated without affecting each other. A microstrip diplexer example is demonstrated with good agreement between the measurement and the simulation. The fabricated diplexer has two non-reciprocal bandpass channels at 829 and 997 MHz, with a minimal insertion loss of 4.9 and 6.1 dB, and a 20-dB isolation bandwidth of 38 and 37 MHz, respectively. To the best of the authors' knowledge, this is the first time that a non-reciprocal diplexer has been presented.

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