Input coupling systems for mm-wave amplifiers

Zhang, Liang and Donaldson, Craig R. and Garner, Jason and Cross, Adrian W. and He, Wenlong (2017) Input coupling systems for mm-wave amplifiers. In: 2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT). IEEE, Piscataway, NJ. ISBN 9781538627204

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    Abstract

    Input couplers for mm-wave gyrotron traveling wave amplifiers (gyro-TWAs) were designed. A W-band input coupler composed of a T-junction and a broadband reflector was constructed and measured in W-band. It achieved a transmission coefficient of -2.2 dB including the pillbox window and a waveguide bend. A multiple-hole coupler was designed and simulated at 372 GHz. Without considering the Ohmic loss, in simulations the 372GHz coupler achieved a transmission coefficient of -0.5 dB.