Wave transmission lines and networks – Negative resistance or reactance networks of the active type – Simulating specific type of reactance
Patent
1996-06-03
1997-06-03
Gensler, Paul
Wave transmission lines and networks
Negative resistance or reactance networks of the active type
Simulating specific type of reactance
331117R, 331176, H03H 1150
Patent
active
056358849
ABSTRACT:
The grounded inductance circuit utilizing a gyrator circuit includes a first operational transconductance amplifier, a second operational transconductance amplifier and a first capacitor. A first output terminal of the first operational transconductance amplifier is connected to a first input terminal of the second operational transconductance amplifier, and a second output terminal of the first operational transconductance amplifier is connected to a second input terminal of the second operational transconductance amplifier. A first output terminal of the second operational transconductance amplifier is connected to a second input terminal of the first operational transconductance amplifier and a second output terminal of the second operational transconductance amplifier is connected to a first input terminal of the first operational transconductance amplifier. The second input terminal of the first operational transconductance amplifier and the first input terminal of the second operational transconductance amplifier are connected to each other and the junction of the two input terminals is applied with a predetermined dc bias voltage with respect to the ground potential. The capacitor is connected between the junction and the second input terminal of the second operational transconductance amplifier. An ac signal is applied between the first input terminal of the first operational transconductance amplifier and the ground potential.
REFERENCES:
patent: 5117205 (1992-05-01), Nauta
D.W.H. Calder, "Audio Frequency Gyrator Filters For An Integrated Radio Paging Receiver", Mobile Radio Systems and Techniques, Sep. 10-13, 1984, pp. 21-26.
Patent Abstracts of Japan, vol. 17, No. 401 (E-1404), Jul. 27, 1993.
Tanimoto et al., "Realization of a 1-V Active Filter Using . . . Plurality of Emitter-Coupled Pairs", IEEE Journal of Solid-State Circuits, vol. 26, No. 7, Jul. 1, 1991, pp. 937-944.
Gensler Paul
NEC Corporation
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