C. Joye, A. Cook, J. Calame, D. Abe, K. Nguyen, E. Wright, A. Vlasov, I. Chernyavskiy, Takuji Kimura, B. Levush
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Demonstration of a high power, wideband 220 GHz serpentine waveguide amplifier fabricated by UV-LIGA
We present the hot test results of a 220 GHz, serpentine waveguide vacuum electron amplifier showcasing a novel embedded monofilament microfabrication technique based on UV-LIGA. The instantaneous operating bandwidth exceeds 15 GHz and the small signal gain of the circuit is over 14 dB. By varying the voltage slightly, an operating bandwidth of almost 40 GHz is realizable with a minimum circuit gain of 7 dB across the band. A maximum power of just over 60 W was obtained at the output flange of the device, corresponding to a power of almost 80 W generated in the circuit.
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