Title :
Determination of Schottky diode sampling mixer frequency response from diode conductance waveforms
Author :
Raleigh, G.G. ; Bellantoni, J.V.
Author_Institution :
Watkins-Johnson Co., Palo Alto, CA
fDate :
4/1/1993 12:00:00 AM
Abstract :
Conversion loss variations at microwave frequencies for Schottky diode harmonic sampling mixers are predicted from a time and frequency domain analysis of diode conductance waveforms. A circuit model for the mixer is used to find a nonlinear integral-differential equation governing the sampling mixer´s time domain behavior. An iterative solution is used to determine the diode conductance waveform, the Fourier transform of which is the frequency response of the sampler. Experimental verification is given for three different values of sampling capacitors and two different sampling chamber delays over a 2-40 GHz range
Keywords :
Schottky-barrier diodes; equivalent circuits; frequency response; frequency-domain analysis; integro-differential equations; losses; mixers (circuits); nonlinear network analysis; solid-state microwave circuits; time-domain analysis; 2 to 40 GHz; Fourier transform; Schottky diode; circuit model; conversion loss variations; diode conductance waveforms; frequency domain analysis; frequency response; harmonic sampling mixers; iterative solution; microwave frequencies; nonlinear integral-differential equation; sampling capacitors; sampling chamber delays; time domain behavior; Circuits; Fourier transforms; Frequency domain analysis; Frequency response; Integral equations; Microwave frequencies; Mixers; Nonlinear equations; Sampling methods; Schottky diodes;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
