Patent US2138784A successfully refreshed from Google Patents.
EP0348370A2
Expired / Lapsed
EP
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Low noise block down-converter for direct broadcast satellite receiver integrated with a flat plate antenna
Assignee: Comsat Corp
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Filing: 1989-06-12
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Granted: —
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Expires: 2009-06-12
Abstract
Abstract A compact multi-layer flat antenna structure incorporating a low noise block down-converter on the power divider network layer of the antenna. RF circuit losses are reduced, and the antenna/receiver combination is made more compact, for flush mounting. The antenna/receiver combination finds particular utility in direct broadcast satellite (DBS) applications for single or dual orthogonal polarizations. The connection between the antenna and receiver may be implemented in stripline/ coplanar waveguide, or other known technologies such as microstrip, slotline, and finline.
Inventors
- 👤 Bernhard D. Geller
- 👤 Amir I. Zaghloul
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 07:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0633; H03D9/0641
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
A flat plate direct broadcast satellite (DBS) antenna/ receiver combination, comprising a ground plane; a power dividing network layer disposed over said ground plane and capacitively coupled thereto; a radiating element array disposed over said power divider network layer, and capacitively coupled thereto, ones of said radiating elements within said radiating element array being fed at at least a single point by corresponding elements of said power divider network; and a low noise block down-converter, disposed on a substrate and provided on said power divider network layer.
Claim 2
Dependent Claim
87 words
A flat plate direct broadcast satellite (DBS) antenna/ receiver combination, comprising a ground plane; a power dividing network layer disposed over said ground plane and capacitively coupled thereto; a radiating element array disposed over said power divider network layer, and capacitively coupled thereto, ones of said radiating elements within said radiating element array being fed at at least a single point by corresponding elements of said power divider network; and a low noise block down-converter, disposed on a substrate and provided on said power divider network layer.
Claim 3
Dependent Claim
95 words
The combination recited in claim 1, wherein said low noise block down-converter comprises; first and second low noise amplifiers, an output of said first amplifier being connected to an input of said second amplifier; a band pass filter receiving an output of said second amplifier; a local oscillator; a mixer receiving outputs of said band pass filter and said local oscillator; a low pass filter connected to an output of said mixer; and an IF amplifier connected to an output of said low pass filter; wherein said first amplifier receives an output of said antenna.
Claim 4
Dependent Claim
38 words
The combination recited in claim 2, wherein said antenna is implemented in stripline, and said low noise block is connected via a coaxial connection to said antenna, said low noise block connection being implemented in coplanar waveguide structure.
Claim 5
Dependent Claim
73 words
The combination recited in claim 3, wherein said coaxial connection comprises first and second portions, said first portion being connected to said ground plane and to said radiating element layer, said second portion of said coaxial connection being contacted to ground plane structure in a manner orthogonal to the connection of said first portion to said ground plane, wherein a field which is output by said antenna is rotated via said coaxial connection.
Claim 6
Dependent Claim
24 words
The combination recited in claim 1, wherein said low noise block down-converter is disposed at a central portion of said power dividing network layer.
Claim 7
Dependent Claim
55 words
The combination recited in claim 1, further comprising a second power divider network layer disposed over said radiating element layer, and a second radiating element layer disposed over said second power divider network layer, said combination further comprising a second low noise block down-converter disposed on a glass substrate on said second power divider network.
Claim 8
Dependent Claim
21 words
The combination recited in claim 1, wherein said substrate comprises one of a low loss ceramic substrate and a glass substrate.
References Cited (Backward Citations)
No citation records indexed.
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