We build a parametric amplifier with a Josephson field-effect transistor (JoFET) as the active element. The resonant frequency of the device is field-effect tunable over a range of 20.2em0exGHz. The JoFET amplifier has 200.2em0exdB of gain, 40.2em0exMHz of instantaneous bandwidth, and a 1-dB compression point of -125.50.2em0exdBm when operated at a fixed resonance frequency.
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Phan et al. (2023) studied this question.
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