TE10 R-TE11c input coupler for a low-THz gyro-TWA

Garner, Jason R. and Zhang, Liang and Donaldson, Craig R. and Cross, Adrian W. and He, Wenlong; (2016) TE10 R-TE11c input coupler for a low-THz gyro-TWA. In: 2015 8th UK, Europe, China Millimeter Waves and THz Technology Workshop, UCMMT 2015. Institute of Electrical and Electronics Engineers Inc., GBR. ISBN 9781467374347 (https://doi.org/10.1109/UCMMT.2015.7460614)

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The design of a fundamental rectangular-to-circular coaxial cavity input coupler for a low-THz gyro-traveling wave amplifier (TWA) is presented. Theoretical and numerical approaches to the design of the coaxial cavity input coupler are introduced. The design is optimized for operation between 360-384 GHz, achieving a transmission bandwidth of 7.5% (358-386 GHz). A comment on the manufacturability of sub-mm waveguide channels is included.