New Gain Controllable Resistor-less Current-mode First Order Allpass Filter and its Application
نویسندگان
چکیده
New first order allpass filter (APF) in current mode, constructed from 2 CCCCTAs and grounded capacitor, is presented. The current gain and phase shift can be electronically /orthogonally controlled. Low input and high output impedances are achieved which make the circuit to be easily cascaded to the current-mode circuit without additional current buffers. The operation of the proposed filter has been verified through simulation results which confirm the theoretical analysis. The application example as current-mode quadrature oscillator with noninteractive current control for both of oscillation condition and oscillation frequency is included to show the usability of the proposed filter.
منابع مشابه
DVCCs Based High Input Impedance Voltage-Mode First-Order Allpass, Highpass and Lowpass Filters Employing Grounded Capacitor and Resistor
A voltage-mode high input impedance first-order allpass, highpass and lowpass filters using two differential voltage current conveyors (DVCCs), one grounded capacitor and one grounded resistor is presented. The allpass, highpass and lowpass allpass signals can be obtained simultaneously from the circuit configuration. The suggested filter uses a canonical number of passive components without re...
متن کاملMinimum Component Based First-Order All- Pass Filter with Inverting and Non-Inverting Outputs
In this paper, a new voltage-mode first order allpass filter using minimum active and passive components is presented. The proposed circuit employs one fully differential second generation current conveyor (FDCCII), one grounded capacitor, one resistor and offers the following advantages: the use of only grounded capacitor which is attractive for integrated circuit implementation, low active an...
متن کاملMinimum Component Based First-Order Inverting and Non-inverting Outputs of All-Pass Filter at the Same Circuit
In this paper, a new voltage-mode first order allpass filter using minimum active and passive components is presented. The proposed circuit employs one fully differential second generation current conveyor (FDCCII), one grounded capacitor, one resistor and offers the following advantages: the use of only grounded capacitor which is attractive for integrated circuit implementation, low active an...
متن کاملHigh Output Impedance Electronically Tunable Current-mode First-order Allpass Filter with Gain Controllability Based on Current Controlled Current Conveyors
In this paper, a gain controllability current-mode first-order allpass filter employing second generation current controlled current conveyor (CCCII) is presented. The proposed circuit uses three CCCIIs and one grounded capacitor without any external resistors, which is easier for monolithic IC implementation. The gain and phase responses are electronically and independently controlled which is...
متن کاملCurrent-Tunable Current-Mode First Order Allpass Section with Gain Controllability Using CCCDTAs
In this study, a current-mode first order allpass filter using current controlled current differencing transconductance amplifiers (CCCDTAs) is proposed. The features of the circuit are that: the pole frequency, phase response and current gain can be electronically controlled via the input bias current: the circuit description is very simple, consisting of 2 CCCDTAs and 1 grounded capacitor, wi...
متن کامل