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US 7,443,355 B2Granted
Antenna feed-tube-to-amplifier coupling
AssigneeKVH Industries, Inc.
InventorGary D. Griffiths
Life of this patent
Estimating the term…
Abstract
A first set of screws secures a Cassegrain-configuration microwave antenna's primary reflector to its low-noise block down-converter without additionally securing that reflector or the low-noise block down-converter to the antenna's feed tube, which a second set of screws separately secures to the low-noise block down-converter.
Claims14
A microwave antenna that includes:
- A) a base;
- B) a primary reflector that forms a central opening, is pivotably mounted on the base, and is so shaped as to define a reflector axis such that the primary reflector directs microwaves received from parallel to the axis to a focal region located on the reflector axis in front of the primary reflector;
- C) a sub-reflector so shaped and positioned in the focal region as to reflect microwaves that the primary reflector has directed to the focal region;
- D) a low-noise block down-converter of which at least most is disposed behind the primary reflector;
- E) a feed tube that forms a feed-tube mouth and is so shaped and positioned as to direct through the central opening and into the low-noise block converter microwaves reflected by the sub-reflector after having been directed to the focal region by the primary reflector;
- F) a set of at least one first fastener that secures the primary reflector to the low-noise block down-converter or the feed tube without securing the primary reflector to the other of the low-noise block down-converter and the feed tube;
- and
- G) a set of at least one second fastener, separate from every said first fastener, that secures the feed tube to the low-noise block converter;
- wherein each said first fastener secures the primary reflector to the low-noise block down-converter without securing the primary reflector to the feed tube.
6 more elements
A microwave antenna that includes:
- A) a base;
- B) a primary reflector that forms a central opening, is pivotably mounted on the base, and is so shaped as to define a reflector axis such that the primary reflector directs microwaves received from parallel to the axis to a focal region located on the reflector axis in front of the primary reflector;
- C) a sub-reflector so shaped and positioned in the focal region as to reflect microwaves that the primary reflector has directed to the focal region;
- D) a low-noise block down-converter of which at least most is disposed behind the primary reflector;
- E) a feed tube that forms a feed-tube mouth and is so shaped and positioned as to direct through the central opening and into the low-noise block converter microwaves reflected by the sub-reflector after having been directed to the focal region by the primary reflector;
- F) a set of at least one first fastener that secures the primary reflector to the low-noise block down-converter or the feed tube without securing the primary reflector to the other of the low-noise block down-converter and the feed tube;
- and
- G) a set of at least one second fastener, separate from every said first fastener, that secures the feed tube to the low-noise block converter;
- wherein the feed tube and low-noise block down-converter form respective rims that the second fasteners urge into abutment with each other, and
- wherein each said first fastener secures the primary reflector to the low-noise block down-converter without securing the primary reflector to the feed tube.
7 more elements
Dependencies are inferred from the claim text.