Communications: radio wave antennas – Antennas – Wave guide type
Patent
1989-01-30
1990-03-20
Hille, Rolf
Communications: radio wave antennas
Antennas
Wave guide type
343772, H01Q 1302
Patent
active
049105272
ABSTRACT:
A versatile dual band satellite system includes a main conductive mounting plate member with a central opening of a predetermined size, and a KU band pick-up unit mounted in the plate to face a satellite antenna. A dielectric funnel support is mounted on the side of the mounting plate toward the antenna, and includes a central opening of the same size as that in the mounting plate, for receiving a C-band pick-up unit. The system includes appropriate microwave chokes and microwave impedance-matching structure, to improve the rejection of spurious or off-axis signals, and to maximize signal strength at the input of both the KU band and the C-band units. With the mounting openings in the main mounting member and in the dielectric funnel support being identical, full interchangeability of parts is practical, and an initial installation may include the C-band unit mounted in the mounting plate to face the antenna.
REFERENCES:
patent: 4740795 (1988-04-01), Seavey
patent: 4785306 (1988-11-01), Adams
patent: 4801945 (1989-01-01), Luly
Proper Feed Selection: First Step to Optimum System Performance, by John M. Seavey, Seavey Engineering Associates, Inc.
The Seavey 124 Prime/Prime Feeds by Product Review, Mark Long, Satellite Direct, Feb. 1987.
The Seavey ESR 124 Dual--Band Feed by Product Review, Satellite World, Mar., 1985.
Dushane Steven
Luly Robert A.
Hille Rolf
Janiel Corporation
Johnson Doris J.
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