Measurements of Embedding Impedance of Millimeter-Wave Diode Mounts

A method for measuring the embedding impedanee of diode mounts is presented. The method is based on the measurement of reflection coefficient magnitude only. The reflection coefficient is measured as a function of diode bias (impedance). The embedding impedance can then be obtained in a simple way from the measured data. Results obtained on a coolable 60-90-GHz waveguide mixer are presented and discussed.