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Measurement of a broadband millimeter wave window for application in vacuum tubes

Donaldson, Craig R. and McElhinney, Paul and Zhang, Liang and He, Wenlong (2016) Measurement of a broadband millimeter wave window for application in vacuum tubes. In: 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves . IEEE, Piscataway. ISBN 9781467384865

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    Abstract

    This paper presents the design and measurement of a HE11 mode multilayer window that is designed for a millimeter wave broadband gyro-amplifier. The window acts to seal the vacuum inside the amplifier whilst coupling out microwave power with minimal reflection and absorption. Operating over 90-100 GHz the simulated reflection of this window is better than -30 dB while the measured reflection shows a lower than -27 dB reflection. The design, simulation and microwave measurement of the window is presented.