Accession Number:

AD0262239

Title:

THEORY AND DESIGN OF WIDE BAND PARAMETRIC CONVERTERS

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

Existing works on parametric amplifiers deal mostly with the physical aspects of the device, the analysis and design of simple coupling circuits. The parametric converter is studied from the circuit theory point of view. The wellknown small signal approach is used and the nonlinear capacitance is approximated by a periodically varying capacitance. A general circuit configuration is considered where the variable capacitance is imbedded in an arbitrary passive network. Formula for the power gain is derived in terms of the variable capacitance and appropriate impedances of the passive imbedding network. From the general formula, the maximum gain-bandwidth product is then studied by utilizing Bodes familiar relationships. Research is concerned with only the noninverting type parametric converter. Synthesis procedures for coupling networks to approach the optimum gain bandwidth are presented. A design example indicates that even with the above assumption, a converter with 70 bandwidth can be obtained to achieve a power gain within 12 db from the optimum. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE