Microwave hybrid phase modulators

Details Microwave hybrid phase modulators Microwave hybrid phase modulators

1980-12-09

1982-12-28

Grimm, Siegfried H.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

332 23R, 333121, 375 52, 375 67, H01P 118

Patent

active

043664547

ABSTRACT:
Microwave phase modulators are described utilizing three or more hybrid junctions, two of which are phase quadrature hybrids each having one pair of conjugate terminals terminated with switching means and each having one of the remaining terminals connected to a respective terminal of a third hybrid junction. With power in at a third terminal of the third hybrid junction, power out at the 4th terminal of the third hybrid junction can be selectively shifted 180.degree. or switched off by operation of the switching means. Broad band operation is achieved and reflections by the switching means do not have to have a precise phase tolerance as long as they are similar.

REFERENCES:
patent: 3233194 (1966-02-01), Alford
patent: 3492603 (1970-01-01), Fredrick, Jr.
patent: 3571765 (1971-03-01), Friedman
patent: 3931599 (1976-01-01), Salzberg

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