Beam forming network

Details Beam forming network Beam forming network

1987-12-04

1989-09-05

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342373, H01Q 326

Patent

active

048643114

ABSTRACT:
A beam forming network employing a matrix of resistive coupling elements to link individual elements E.sub.1 to E.sub.n of an antenna to the different phase terminals 3, 4, 5 and 6 of a phase combiner. Because of unwanted coupling between the conductive members forming the matrix it has in some circumstances been found impossible to select values of the coupling elements to give a required beam pattern. The invention solves the problem by including phase shifters in alternate lines to the antenna elements. A separate matrix and phase combiner is provided for each beam to be formed.

REFERENCES:
patent: 3611401 (1971-10-01), Connolly
patent: 3710281 (1973-01-01), Thomas
patent: 3718933 (1973-02-01), Huele
patent: 4041501 (1977-08-01), Frazita et al.
patent: 4063243 (1977-12-01), Anderson et al.
patent: 4090199 (1978-05-01), Archer
patent: 4091387 (1978-05-01), Profera
patent: 4101902 (1978-07-01), Trigon
patent: 4117494 (1978-09-01), Frazita
patent: 4316192 (1982-02-01), Acoraci
patent: 4544927 (1985-10-01), Kurth et al.
patent: 4584581 (1986-04-01), Teshirogi
patent: 4673942 (1987-06-01), Yokoyama

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