Electronically Tunable Minimum Component Biquadratic Filters for Interface Circuits

Mehmet Sağbaş

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DOI: 10.4236/cs.2011.23033                

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.

Keywords

Second-Order Filters, CC-CDBA, Electronic Tunability, Current-Mode Circuits, Interface Circuits

Conflicts of Interest

The authors declare no conflicts of interest.

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