New Gain Controllable Resistor-less Current-mode First Order Allpass Filter and its Application
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Date
2012-04
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Mark
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Společnost pro radioelektronické inženýrství
Abstract
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 non-interactive current control for both of oscillation condition and oscillation frequency is included to show the usability of the proposed filter.
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Citation
Radioengineering. 2012, vol. 21, č. 1, s. 312-316. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_01_0312_0316.pdf
http://www.radioeng.cz/fulltexts/2012/12_01_0312_0316.pdf
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Peer-reviewed
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en