Analog variable phase shifter with active matching circuits

Details Analog variable phase shifter with active matching circuits Analog variable phase shifter with active matching circuits

1992-02-05

1994-05-03

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Delay lines including a lumped parameter

333 32, 333164, H03H 1120

Patent

active

053091248

ABSTRACT:
An analog variable phase shifter comprises a phase shift circuit and associated active inlet and outlet matching circuits. The phase shift circuit includes a transistor with negative feedback, and the inlet and outlet matching circuits are of the type used for matching a wideband microwave signal amplifier over the entire range of frequency variation in the microwave signals applied to the amplifier.

REFERENCES:
patent: 5006823 (1991-04-01), Baril et al.
"A Novel Microwave Transmission Phase-Shifter", J. Ph. Coupez et al., pp. 1023-1027; 18th European Microwave Conference-Stockholm 1988.
Universite Du Languedoc, FR, 6ES Journees Nationales Microondes, Jun. 21, 1989, Montpellier, France, pp. 25-26; Coupex et al., "Une Solution pour les Systemes de Communications Grand Public Autour de 1 GHZ: Le Dephaseur en Transmission a TEC et Diodes Varac".
Patent Abstracts of Japan, vol. 13, No. 513 (E-847) Nov. 16, 1989 & JP-A-01 208 908 (Kenkyusho), Aug. 22, 1989.
Horowitz et al. "The Art of Electronics", 1980, University of Cambridge, Cambridge, GB pp. 235, 236.

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