Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1994-12-09
1996-02-27
Hajec, Donald T.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343776, 343774, 427304, 29600, H01Q 2100
Patent
active
054952620
ABSTRACT:
A microwave radar antenna that substantially comprises molded or extruded thermoplastic components that are assembled into completed assemblies, are then metallized by either electroless copper or are electroplated with copper to achieve RF conductivity. The finished subassemblies are joined together forming the completed antenna. The molded, metallized, plastic antenna uses a thermoplastic material, such as polyetherimide, or suitable high strength, high temperature thermoplastic that is used to injection mold or extrude detailed microwave components. The molded components are assembled, using epoxy adhesives, solvents or other mechanical method into microwave subassemblies. These subassemblies are then either electroless copper plated or electroplated to provide RF conductivity. The metallized subassemblies are then joined together using mechanical methods to form a completed radar antenna, replacing heavier more costly metal radar antennas. Specifically, the molded, metallized, plastic antenna is comprised of an antenna aperture and electromechanical phase shifter section, centerfeeds comprising a horizontal feed network, interconnecting waveguides, a vertical feed network including conventional rotary field phase shifters, and a sum and difference monopulse feed network. The antenna also includes a suitable beam steering controller that provides electronic antenna beam steering and power supplies. The use of the present microwave antenna incorporating molded, metallized, plastic components results in an antenna having better performance, lighter weight, and much lower manufacturing costs than conventional metal antennas.
REFERENCES:
patent: 3195079 (1965-07-01), Burton et al.
patent: 3576579 (1971-04-01), Appelbaum et al.
patent: 4020875 (1977-05-01), Akiba
patent: 4499157 (1985-02-01), Mulliner et al.
Johnson et al, "Radar Antennas", Antenna Engineering Handbook, 1984, pp. 32-20-32-23.
Alkov Leonard A.
Denson-Low W. K.
Hajec Donald T.
Hughes Aircraft Company
Le Hoang-anh
LandOfFree
Molded plastic microwave antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded plastic microwave antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded plastic microwave antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1682239