Air-stripline overlay hybrid coupler

Details Air-stripline overlay hybrid coupler Air-stripline overlay hybrid coupler

1982-02-02

1984-07-10

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333238, H01P 518

Patent

active

044595689

ABSTRACT:
A microwave circuit is disclosed which may be employed to form a low loss, high isolation, quadrature coupler operating over a wide frequency range. The coupler includes two quarter-wave transmission lines formed on air-stripline circuit boards and held in close proximity within a housing to provide microwave coupling. The lines are separated by precise spacing elements located between the stripline circuit boards. A plurality of alignment pins retain the stripline boards in exact geometrical position with respect to one another in the coupler configuration. Wave spring washers retained on the alignment pins cooperate with the housing to insure proper board spacing for optimal performance.

REFERENCES:
patent: 2575571 (1951-11-01), Wheeler
patent: 2934719 (1960-04-01), Kyhl
patent: 3140456 (1964-07-01), Lassen et al.
patent: 3146413 (1964-08-01), Butler
patent: 3345585 (1967-10-01), Hildebrand
patent: 3506932 (1970-04-01), Beurrier
patent: 3621478 (1971-11-01), Johnson et al.
patent: 4349793 (1982-09-01), Spinner
patent: 4383226 (1983-05-01), Nygren et al.

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