Key result
Two new first-order voltage-mode all-pass filters using a single-current differencing buffered amplifier and four passive components were presented and confirmed via PSPICE simulation.
The paper presents new first-order voltage-mode all-pass filters using a minimum of active and passive components.
Novel minimal-component all-pass filters proposed; leaves open experimental validation before circuit adoption.
This paper presents two new first-order voltage-mode all-pass filters using a single-current differencing buffered amplifier and four passive components. Each circuit is compatible to a current-controlled current differencing buffered amplifier with only two passive elements, thus resulting in two more circuits, which employ a capacitor, a resistor, and an active element, thus using a minimum of active and passive component counts. The proposed circuits possess low output impedance, and hence can be easily cascaded for voltage-mode systems. PSPICE simulation results are given to confirm the theory.
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Sudhanshu Maheshwari (2007) studied this question. Voltage-mode all-pass filters was evaluated. Two new first-order voltage-mode all-pass filters using a single-current differencing buffered amplifier and four passive components were presented and confirmed via PSPICE simulation.
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