Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1980-05-05
1983-05-03
Moore, David K.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343701, 343754, H01Q 326
Patent
active
043822614
ABSTRACT:
A millimeter wave line scanner is disclosed providing steered fan-shaped ms from opposite faces at substantially equal angles of a semiconductor waveguide, rectangular in cross section, and having a plurality of equally spaced metallic perturbations or strips disposed on one of the two radiating sides or faces. Different angles of scan are selectively obtained by means of at least one distributed longitudinal PIN diode formed on an adjoining side of the semiconductor waveguide having electrical circuit means coupled thereto for controlling the diode's conductivity which acts to change the guide wavelength and accordingly cause a variation in radiation angle of the two equal beams radiating from opposite faces. The waveguide with one or more PIN diodes may also be used as a phase shifter. To reduce losses, a dielectric insulating layer is disposed between each PIN diode and the waveguide, which prevents the propagation of the wave into the PIN diode.
REFERENCES:
patent: 2921308 (1960-01-01), Hansen et al.
patent: 3155975 (1964-11-01), Chatelin
patent: 3959794 (1976-05-01), Chrepta et al.
patent: 3969729 (1976-07-01), Nemit
patent: 4203117 (1980-05-01), Jacobs et al.
patent: 4212014 (1980-07-01), Chekroun
Freibergs Elmer
Horn Robert E.
Jacobs Harold
Edelberg Nathan
Moore David K.
Murray Jeremiah G.
Redman John W.
The United States of America as represented by the Secretary of
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