An output coupler for a W-band high power wideband gyro-amplifier

Paul McElhinney, Craig Donaldson, Johannes Erik McKay, Liang Zhang, Duncan Alexander Robertson, Robert Iain Hunter, Graham Murray Smith, Wenlong He, Adrian Cross

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21 Citations (Scopus)
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Abstract

An output coupler for a W-band high power wideband gyro-amplifier has been designed, manufactured and experimentally measured. It consists of a high performance sin2-parallel corrugated horn integrated with a broadband multi-layer window. The major design requirements are that the horn/window combination must have an input return loss lower than -30 dB over a 10 GHz bandwidth, provide a high quality output beam pattern, and operate under ultra-high vacuum conditions. The coupler converts a circular wave guide TE11 mode into the free space Laguerre Gaussian LG00 mode over the frequency band of 90–100 GHz with a measured return loss of between -30 and -40 dB and a simulated Gaussian coupling efficiency of over 99% at 94 GHz.
Original languageEnglish
Article number7857760
Number of pages4
JournalIEEE Transactions on Electron Devices
Volume64
Issue number4
Early online date16 Feb 2017
DOIs
Publication statusPublished - Apr 2017

Keywords

  • Corrugated horn
  • Gaussian coupling
  • Microwave window

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