Monolithic vector modulator/complex weight using all-pass networ

Details Monolithic vector modulator/complex weight using all-pass networ Monolithic vector modulator/complex weight using all-pass networ

1986-04-14

1989-02-21

Laroche, Eugene R.

Wave transmission lines and networks

Coupling networks

Delay lines including a lumped parameter

333 81R, 307511, H03H 718

Patent

active

048068888

ABSTRACT:
A complex weighting device contains parallel all-pass networks selectively feeding a pair of differential amplifiers, so as to produce a set of mutually orthogonal vector outputs. These outputs are coupled to an attenuator network comprised of dual gate field effect transistors for controllably attenuating the vector outputs of the differential amplifiers. The attenuated vectors are selectively combined to realize a prescribed degree of phase shift from 0.degree. to 360.degree. through the complex weight.

REFERENCES:
patent: 3784934 (1974-01-01), Ohsawa
patent: 4558291 (1985-12-01), Nichols
patent: 4581595 (1986-04-01), Silagi
patent: 4608543 (1986-08-01), Adams
patent: 4663594 (1987-05-01), Perkins
patent: 4700153 (1987-10-01), Salvage et al.
Suckling et al., "S. Band Phase Shifter Using Monolithic GaAs Circuits", ISSCC Digest of Technical Papers, Feb. 1982, p. 134.

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