Phase shift circuit and phase shifter

Details Phase shift circuit and phase shifter Phase shift circuit and phase shifter

2007-01-23

2007-01-23

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C333S138000

Reexamination Certificate

active

10471174

ABSTRACT:
A phase shift circuit and a phase shifter are achieved which are small in size and wide in bandwidth. The phase shift circuit includes a capacitor, and a series circuit composed of a switching element which exhibits capacitivity when it is in an off-state and an inductor connected in series with this switching element, the series circuit being connected in parallel with the capacitor. The capacitor and one terminal of the series circuit are connected with a high frequency signal input/output terminal, and the other terminal thereof is connected with ground.

REFERENCES:
patent: 4288763 (1981-09-01), Hopfer
patent: 5422608 (1995-06-01), Levesque
patent: 6674341 (2004-01-01), Hieda et al.
patent: 2000-277703 (2000-06-01), None
patent: 2001-203502 (2001-07-01), None
JP 2001-203502A Machine translation.
Holden et al., IEEE-GMTT International Microwave Symposium, Digest of Technical Papers (IEEE Cat. No. 72 CHO 612-2-MTT), pp. 47-48 (1972).
Boire et al., IEEE MTT-S International Microwave Symposium Digest, pp. 601-604 (1985).

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