Abstract
A characterisation method, suitable for the study of balanced MMIC frequency multiplier circuits is presented. Using this approach, a number of frequency doubler and tripler configurations are considered. The influence of the non-ideal amplitude/phase balance characteristics of some planar hybrids on the harmonic rejection properties of these circuits is discussed. Optimum circuit configurations for doubler and tripler applications are proposed. Design details for a novel generalised configuration, which can be utilised for the balancing of single-ended multiplier circuits of any order, are outlined. The harmonic generation characteristics inherent in this approach are discussed.
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