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

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McElhinney_2017_Output_IEEETransElecDev_AAM.PDF (743.7Kb)
Date
04/2017
Author
McElhinney, Paul
Donaldson, Craig
McKay, Johannes Erik
Zhang, Liang
Robertson, Duncan Alexander
Hunter, Robert Iain
Smith, Graham Murray
He, Wenlong
Cross, Adrian
Keywords
Corrugated horn
Gaussian coupling
Microwave window
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
NDAS
Metadata
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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.
Citation
McElhinney , P , Donaldson , C , McKay , J E , Zhang , L , Robertson , D A , Hunter , R I , Smith , G M , He , W & Cross , A 2017 , ' An output coupler for a W-band high power wideband gyro-amplifier ' , IEEE Transactions on Electron Devices , vol. 64 , no. 4 , 7857760 . https://doi.org/10.1109/TED.2017.2660304
Publication
IEEE Transactions on Electron Devices
Status
Peer reviewed
DOI
https://doi.org/10.1109/TED.2017.2660304
ISSN
0018-9383
Type
Journal article
Rights
© 2017, IEEE. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at ieeexplore.ieee.org / https://doi.org/10.1109/TED.2017.2660304
Description
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) U.K. under Research Grant EP/K029746/1, and Science and Technology Facilities Council (STFC) U.K. under Research Grants ST/K006673/1 & ST/K006703/1, ST/N002326/1 & ST/N002318/1.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10317

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