Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1983-10-24
1987-09-08
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342371, 342373, H01Q 322, H01Q 324, H01Q 326
Patent
active
046927689
ABSTRACT:
A feed device for a sweep beam array antenna which has a plurality of elementary antennae combined into a plurality of sub-arrays having a predetermined overlap at their ends. Each sub-array includes a plurality of elementary groups, each elementary group including N elementary antennae. Each elementary group is fed by a feed circuit having N inputs and N outputs. Circuitry is provided for grouping together an arbitrary number of said elementary groups to form an assembly comprising MN elementary antennae, where M is greater than N, and MN antennae are the number of antennae in a sub-array. This circuitry is connected to an energy distributor and includes a plurality of divider distributor circuits, each one coupled to an output of the energy distributor. Each divider distributor circuits has M outputs. The circuitry also includes a plurality of adder distributor circuits, each one having N outputs coupled to the N inputs of a respective one of said elementary groups. Each adder distributor circuit has M inputs which are coupled to the M outputs of predetermined ones of the divider distributor circuits according to a predetermined, periodic law.
REFERENCES:
patent: 3368202 (1968-02-01), Crousel
patent: 3474447 (1969-10-01), Melancon
patent: 3518695 (1970-06-01), Schroeder
patent: 3573837 (1971-04-01), Reindel
patent: 3680109 (1972-07-01), Steudel
patent: 3803625 (1974-04-01), Nemit
patent: 4228436 (1980-10-01), DuFort
patent: 4257050 (1981-03-01), Ploussios
patent: 4318104 (1982-03-01), Enein
patent: 4424500 (1984-01-01), Viola et al.
patent: 4489325 (1984-12-01), Bauck et al.
Blum Theodore M.
Sotomayor John B.
Thomson - CSF
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