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Analysis of Nonlinear Input Impedance Matching in Active Frequency Multipliers
Jessi E. JOHNSON Andrew SILVA George R. BRANNER
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: General and Nonlinear Circuits and Systems
microwave frequency conversion, impedance matching, nonlinear circuits, microwave circuits, microwave communication,
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For a highly nonlinear circuit design such as an active frequency multiplier, performing an input impedance "match" is not a straightforward problem. In this work, an analysis of nonlinear input impedance matching in active microwave frequency multipliers is presented. By utilizing harmonic balance simulation of an idealized device model, fundamental aspects of performing an input "match" are explored for classical frequency doubler and frequency tripler configurations. The analysis is then repeated using a realistic device model, verifying the efficacy of using nonlinear input impedance matching to improve the output power and return loss characteristics of a multiplier.