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This paper describes the design of multifunction second order voltage-mode filter using the voltage differencing differential difference amplifier (VDDDA) as active element. The internal construction of VDDDA based on the 0.25um TSMC CMOS technology is used for simulation and testing. The proposed filter is sort of three inputs-single output (TISO) multifunction filter. It consists of single VDDDA,...
An analog second order current-mode filter is described in this paper. The proposed filter uses only a single active building block, namely current following cascaded transconductance amplifier with two grounded capacitors which is attractive for monolithic chip implementation. The circuit has four inputs and single output currents. Five standard functions, namely low-pass, high-pass, band-pass, band-reject...
This paper deals with a single-input multiple-output mixed-mode second-order filter providing two voltage-mode functions (low-pass and band-pass) and three transconductance-mode functions (low-pass, band-pass and band-reject) based on voltage differencing transconductance amplifier (VDTA). The quality factor and pole frequency can be electronically and orthogonally tuned via the bias current. The...
This paper introduces a new current tunable current-mode biquad filter topology which is based on the active elements namely, modified current follower transconductance amplifiers (MCFTAs) and two grounded capacitors. It can realize all the five standard filtering responses such as band pass (BP), low pass (LP), high pass (HP), band reject (BR), and all pass (AP) at single high impedance current output...
A new current-controlled current-mode universal filter with three inputs and single output employing two translinear current conveyor and two grounded capacitors is presented. The proposed circuit provides low-pass, band-pass, high-pass, bandstop and all-pass current responses from the same configuration at a high impedance terminal. The filter also offers independent electronic control of the natural...
This paper deals with a tunable bandpass Bulk Acoustic Waves (BAW) filter architecture that uses integrated negative capacitors. In previous papers, the filter architecture was realized with inductances. The drawbacks of this solution were the generation of a second parasitic shunt resonant frequency and then the low-Q factor of the inductance that finally degrades the high-Q factor of BAW resonators...
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