Rotman Lens Used as a Demultiplexer/Multiplexer

Yunhua Zhang, Vincent Fusco

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


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A new type of microwave demultiplexer is proposed which combines an arrayed waveguide grating (AWG) and a Rotman lens. The dispersion property of an AWG is employed to produce different phase slope responses for different frequencies, while the Rotman lens routes the frequency components onto different ports. To optimize isolation performance, the design constraints of both the AWG and the Rotman lens are re-examined and new design criteria elaborated. The optimized design is demonstrated of being capable of achieving 15 dB channel isolation over a 25% band range centered at 10 GHz. While a design based on a conventional Rotman lens yields isolation level of around 6 dB over a 9% band range centered at 10GHz.
Original languageEnglish
Title of host publicationMicrowave Conference (EuMC), 2012 42nd European
Place of PublicationAmsterdam
Number of pages4
ISBN (Electronic)978-2-87487-026-2
Publication statusPublished - Oct 2012

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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