Numerical Analysis of Nonlinear Distortion Generated from a Single Varactor and an Anti-Series Varactor Pair

Masami AKAIKE  Takashi OHIRA  Keizo INAGAKI  Qing HAN  

IEICE TRANSACTIONS on Electronics   Vol.E85-C    No.12    pp.1990-1999
Publication Date: 2002/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
nonlinear distortion,  varactor,  anti-series,  harmonic distortion,  nonlinear analysis,  

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Higher-order harmonics and distortions generated by nonlinearity of capacitance-voltage characteristic of a single varactor and an anti-series-connected varactor pair are analyzed and compared. The effect of linear and parabolic terms of nonlinearity to harmonics outputs and distortions is discussed. It is shown that an anti-series-connected varactor pair has a completely suppressed linear term and reduced parabolic term. The advantage of an anti-series-connected varactor pair is theoretically explained.