Analysis of Nonlinear Input Impedance Matching in Active Frequency Multipliers

Jessi E. JOHNSON  Andrew SILVA  George R. BRANNER  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E88-D    No.7    pp.1409-1416
Publication Date: 2005/07/01
Online ISSN: 
DOI: 10.1093/ietisy/e88-d.7.1409
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
Keyword: 
microwave frequency conversion,  impedance matching,  nonlinear circuits,  microwave circuits,  microwave communication,  

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Summary: 
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.