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Circuit characterisation of waveguide-mounted Gunn-effect oscillators

Circuit characterisation of waveguide-mounted Gunn-effect oscillators

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A lumped equivalent circuit is proposed to characterise the load impedance presented to a Gunn device mounted in a waveguide cavity. Using analytical expressions for the elements of the circuit, theoretical predictions for the properties of Gunn oscillators with and without a coupling iris are made, and are compared with experiments.

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