W-band quasi-optical mode converters for gyro-devices

P. McElhinney, C. R. Donaldson, L. Zhang, A. W. Cross, W. He

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

1 Citation (Scopus)
42 Downloads (Pure)


A W-band corrugated horn has been designed, manufactured, and experimentally measured at the University of Strathclyde, for integration into a gyro-device as a quasi-optical launcher. This horn converts a cylindrical TE11 mode into a free space TEM00 mode in a frequency band of 84-104 GHz with a reflection better than-30 dB and a Gaussian coupling efficiency of ∼98% and directivity of 26.6 dB at 95 GHz. The Gaussian output of the horn and small beam waist makes such a horn ideal for integration with applications and for use with a depressed collector system. The measured results are in excellent agreement with the numerical simulations.

Original languageEnglish
Title of host publication2nd IET Annual Active and Passive RF Devices Seminar
PublisherInstitution of Engineering and Technology
Number of pages4
ISBN (Print)9781849199728
Publication statusPublished - 29 Oct 2014
Event2nd IET Annual Active and Passive RF Devices Seminar - Birmingham, United Kingdom
Duration: 29 Oct 2014 → …


Conference2nd IET Annual Active and Passive RF Devices Seminar
Country/TerritoryUnited Kingdom
Period29/10/14 → …


  • frequency bands
  • corrugated horns
  • coupling efficiency
  • depressed collector
  • Gaussian output
  • measured results
  • quasi optical mode converter
  • quasi-optical


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