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A VCF Loss-Control Tuning Loop for Q -Enhanced LC Filters

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3 Author(s)
S. Li ; Dept. of Electr. Eng., Columbia Univ., New York, NY ; N. Stanic ; Y. Tsividis

A loss-control tuning loop for Q-enhanced LC filters based on a voltage-controlled filter (VCF) is presented. The main factors affecting the tuning accuracy in this tuning scheme, including mismatches and frequency tuning errors, are discussed. The tuning scheme was implemented for a 1.5-V, 6-GHz Q-enhanced LC filter on a UMC 0.18-mum standard CMOS process. The design and measurement results are given. Effective loss control of the filter over process tolerances is demonstrated

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IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:53 ,  Issue: 9 )