Low loss 360 degree X-band analog phase shifter

Details Low loss 360 degree X-band analog phase shifter Low loss 360 degree X-band analog phase shifter

1990-04-26

1992-06-02

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333117, 333161, H01P 1185

Patent

active

051190508

ABSTRACT:
A low loss reflection-type analog phase shifter circuit producing a large range (nearly 360.degree.) of phase shift at X-band while achieving low attenuation (insertion loss) and little amplitude variation over all phase states. The results are achieved, in part, by using a terminating impedance which includes parallel-connected hyperabrupt varactor diodes. The circuit is implemented readily in a monolithic microwave integrated circuit using GaAs.

REFERENCES:
patent: 4288763 (1981-09-01), Hopfer
patent: 4638269 (1987-01-01), Dawson et al.
patent: 4837532 (1989-06-01), Lang
patent: 4859972 (1989-08-01), Franke et al.
"Linear Analog Hyperabrupt Varactor Diode Phase Shifters", Niehenke et al., 1985 IEEE MTT-S Digest, pp. 657-660.
"360.degree. Varactor Linear Phase Modulator", Garver, IEEE Transactions on Microwave Theory and Techniques, vol. MTT-17, No. 3, Mar. 1969, pp. 137-147.

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