Microwave active filter circuit using pseudo gyrator

Details Microwave active filter circuit using pseudo gyrator Microwave active filter circuit using pseudo gyrator

1991-12-27

1993-04-13

Pascal, Robert J.

Wave transmission lines and networks

Negative resistance or reactance networks of the active type

Simulating specific type of reactance

333216, H03H 1108

Patent

active

052026558

ABSTRACT:
A low pass filter using two pseudo gyrators 10 and 20 is disclosed. The gate-source capacitances of field effect transistors forming the pseudo gyrator circuit can be considered to be included in capacitors for forming the low pass filter. Therefore, an ideal admittance matrix for a gyrator is obtained. Increase in integration density of the low pass filter can be achieved since the low pass filter is formed by a simplified pseudo gyrator circuit.

REFERENCES:
patent: 3639858 (1972-02-01), Miyata et al.
patent: 3769603 (1973-10-01), Herchner
patent: 3824496 (1974-07-01), Hekimian
Pauker, "GaAs Monolithic Microwave Active Gyrator", Ga As IC Symposium 1986 IEEE pp. 82-85.
Chien et al., "Monolithically Integrable Active Microwave Inductor", Electronics Letters, Jul. 7, 1988 vol. 24 No. 14 pp. 905-906.

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