Split slot ring spatial quasi-circulator for RCS characterisation

M. Euler, Vincent Fusco

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A prototype X-band scale model for a quasi-optical three-port circulator utilising a double-layer circularly polarising frequency selective surface is proposed. The operating principles and measured characteristics of the device are discussed. A prototype device operating at 9.9 GHz has been built and validated experimentally. The port 1 to port 2 insertion loss of the quasi-circulator has been measured to be 2 dB, while port 1 to port 3 isolation is 16 dB. It is demonstrated that port 1 to 3 isolation can be increased to 25 dB by embedding the quasi-circulator in a feedforward setup.
Original languageEnglish
Pages (from-to)394-U26
Number of pages369
JournalElectronics Letters
Issue number6
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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