The step recovery diode in series mode harmonic generation.

The analysis of step-recovery diode harmonic generators by means of a linear time-varying circuit model of the diode has been advocated previously and it has been demonstrated that a direct analogy exists for the purposes of predicting efficiency, terminating impedances and optimum idler combinations, between the shunt connected SRD and a three-terminal switch where the periodic variation in conductance may be related to the physical properties of the diode. In the present paper it is demonstrated that by suitably modifying the circuit equation to include the d.c. bias essential to the operation of the series connected SRD the linear time-varying circuit model may be applied to this circuit also, resulting in an analysis of comparable generality and ease of application to that obtained for the shunt generators. A basis is thus provided for the analysis of all forms of SRD harmonic generator and for the optimization of diode parameters for defined circuit configurations. [ABSTRACT FROM AUTHOR]