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Electronically Tunable Minimum Component Biquadratic Filters for Interface Circuits
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Abstract
In this paper, two new electronically tunable filter configurations are proposed. The proposed filters operate current-mode (CM), voltage-mode (VM), transimpedance-mode (TIM) and transadmittance-mode (TAM). The first configuration realizes second-order VM band-pass and TAM high-pass filter characteristics from the same configuration. The second one realizes second-order TIM band-pass and CM low-pass filter characteristics from the same configuration. They also use minimum number of electronic components (two capacitors and one active component namely; current controlled current difference transconductance amplifier). The workability of the proposed structures has been demonstrated by simulation results.
KeywordsSecond-Order FiltersCC-CDBAElectronic TunabilityCurrent-Mode CircuitsInterface Circuits
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