Communications: radio wave antennas – Antennas – Wave guide type
Patent
1995-03-17
1996-11-26
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Wave guide type
343781R, 343779, 343780, H01Q 1300
Patent
active
055790216
ABSTRACT:
Compact, microwave scanned antennas include combinations of a radiator, a reflector and a mirror. The radiator is formed by plating a shaped dielectric core. It generates an antenna beam at an output aperture in response to a microwave signal at an input port. The wavefront orientation of the antenna beam is a function of the wavefront orientation of the microwave signal at the input port. Changing the angular relationship between the path of the microwave signal and the input port changes the wavefront orentation of the antenna beam and, therefore, its beam axis. Pivoting the reflector realizes the desired angular change in the microwave signal path. Alternatively, the reflector can be fixed and the mirror pivoted to vary the microwave signal path. Antenna embodiments can be physically realized with a single moving part, the shaped dielectric is easy to form and when configured to operate at a high frequency, e.g., 77 GHz, the antenna is small enough to fit behind an automobile license plate.
REFERENCES:
patent: 2478241 (1945-07-01), Chu
patent: 2589433 (1952-03-01), Riblet
patent: 3795004 (1974-02-01), Meek et al.
patent: 3936837 (1976-02-01), Coleman et al.
patent: 4410892 (1983-10-01), Knop et al.
patent: 4829315 (1989-05-01), Cookman
patent: 4939526 (1990-07-01), Tsuda
patent: 5266961 (1993-11-01), Milroy et al.
Silver, Samuel, Microwave Antenna Theory and Design, McGraw-Hill Publishing, New York, 2nd Edition, 1984, pp. 457-464 no month.
Alkov Leonard A.
Denson-Low Wanda K.
Hajec Donald T.
Ho Tan
Hughes Aircraft Company
LandOfFree
Scanned antenna system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanned antenna system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanned antenna system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1976369