Network with a single amplifier for simulating an FDNR circuit

Details Network with a single amplifier for simulating an FDNR circuit Network with a single amplifier for simulating an FDNR circuit

1975-12-24

1976-11-02

Dixon, Harold A.

Wave transmission lines and networks

Attenuators

333 80T, H03H 744

Patent

active

039900258

ABSTRACT:
The one-port network here includes a pair of terminals having a resistor R7 electrically connected therebetween, and a differential-input operational amplifier having an output electrically connected through a resistor R3 to a first input of the amplifier and through a resistor R4 to a second input of the amplifier. The first input of the amplifier is connected through a capacitor C5 to one terminal of the network which is electrically connected to a ground reference potential. The second input of the amplifier is also connected to ground through a resistor R6. The first and second inputs of the amplifier are electrically connected through resistor R1 and capacitor C2, respectively, to the other terminal of the network. With the initial constraint that the value of the conductance of the resistor R4 be equal to the product of the capacitance of the capacitor C2 and the conductance of the resistor R3 divided by the capacitance of the capacitor C5, the network simulates the parallel combination of an FDNR, a capacitor, and a resistor across the terminals thereof. Particular other additional relations between values of network elements cause the simulated capacitance and/or the simulated resistance to vanish in order to simulate an FDNR singularly.

REFERENCES:
patent: 2968773 (1961-01-01), Sandberg
patent: 3219952 (1965-11-01), Saraga
patent: 3831117 (1974-08-01), Fletcher
patent: 3895309 (1975-07-01), Rollett et al.

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