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This paper presents a new configuration of mixed mode biquadratic filter composed by four second generation current conveyor circuits (CCII), two grounded capacitors and five grounded resistors. This filter is characterized by single input and three output terminals for each mode. It can provides all the three standard filter functions, namely low-pass, band-pass and high-pass, without changing the...
In this paper, using Lab VIEW graphical programming environment are made a number of virtual instruments which are used at the demo/study of low power active filters with operational amplifiers (op-amp). There are analyzed the active first order low pass, high pass and band pass filters. The results are included in two papers. The first one contains the simulation of active filters. The different...
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,...
A single input and three outputs voltage-mode multifunction biquadratic filter using a single plus-type differential voltage current conveyor, two capacitors and three resistors is presented. The proposed circuit offers the following features: realization of three filter functions, which are, lowpass, bandpass, and highpass filters, simultaneously, the use of only single plus-type differential voltage...
This paper presents a new current-mode first-order allpass network. The network employs only one current follower transconductance amplifier, one capacitor and two resistors. Unlike previously works, the proposed network offers both non-inverting and inverting allpass transfer functions into one circuit. Moreover, the current gain of the network can be adjusted. The output terminal of the filter possesses...
This paper presents a new electronically tunable sinusoidal oscillator. The proposed oscillator is consisted of two second-generation current conveyors with variable current gain, two grounded capacitors, one grounded resistor and one floating resistor. Unlike previously oscillators, the condition and the frequency of oscillation of this oscillator can be controlled electronically and independently...
A design methodology and equations are described for lumped-element filter prototypes having low-pass, high-pass, bandpass, or bandstop characteristics with theoretically perfect input- and output-match at all frequencies. Such filters are a useful building block in a wide variety of systems in which the highly reactive out-of-band termination presented by a conventional filter is undesirable. The...
A 4th order Chebyshev complex filter with stop band zeros at the DC point for low-IF receivers' applications using 0.18μm CMOS technology is proposed in this paper. Based on capacitor-OTA integrators, the designed ladder filter uses resistors instead of capacitors to realize the transmission zeros. The complex filter has a 0 to 48dB tunable gain (6dB per step) and over 65dB DC-offset rejection. A...
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