Communications: radio wave antennas – Antennas – Microstrip
Patent
1988-08-01
1989-06-13
Hille, Rolf
Communications: radio wave antennas
Antennas
Microstrip
343787, 343788, 343785, H01Q 0000
Patent
active
048396591
ABSTRACT:
A microstrip phase scan antenna array is provided having a columnar array microstrip radiating patches mounted on a dielectric substrate. Each column of the array is fed by a separate variable, reciprocal ferrite rod phase shifter which is mounted on the substrate and is coupled to the column which it controls and to a source of millimeter wave energy by microstrip to dielectric waveguide transitions. Each of the phase shifters is controlled by a helical biasing coil surrounding the ferrite rod. All of the biasing coils are serially interconnected by a single scanning control drive wire and the numbers of turns of the coils are related to each other by an arithmetic progression in which the number of turns of a particular biasing coil differs from the number of turns of the adjacent biasing coil in the sequence of biasing coils controlling the array by a constant amount.
REFERENCES:
patent: H26 (1986-02-01), Dinger
patent: 3680010 (1972-07-01), Buck
patent: 3868694 (1975-02-01), Meinke
patent: 4458218 (1984-07-01), Babbitt et al.
Babbitt Richard W.
Stern Richard A.
Hille Rolf
Kanars Sheldon
Le Hoang-anh
Maikis Robert A.
The United States of America as represented by the Secretary of
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