Feed device for a radiating element operating in dual polarization
First Claim
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1. A feed device for a radiating element operating in dual polarization, said feed device comprising:
- means defining a first cavity, means defining a second cavity, said first cavity comprising an interior electrically conductive cavity wall at least partially enclosing said first cavity, said second cavity comprising an interior electrically conductive cavity wall at least partially enclosing said second cavity, said feed device further comprising a coupling device for electromagnetically coupling said cavities, a first feed line and a second feed line for transporting respective electromagnetic waves to said radiating element;
wherein said radiating element, said first cavity and said second cavity are respectively aligned along an imaginary principal axis defining a main direction of radiation of said radiating element;
wherein said first feed line penetrates into said first cavity and is oriented perpendicular to said principal axis; and
wherein said second feed line penetrates into said second cavity and is oriented perpendicular to said principal axis and orthogonal to said first feed line; and
wherein said coupling device is a coupling slot defined by a conductive member placed between said first and said second cavities, sized smaller than said cavities, spaced from said conductive cavity walls, and partially closing off adjacent ends of said cavities.
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Abstract
A feed device for a radiating element operating in dual polarization, for use especially in the field of space transmission, comprises a first feed line penetrating into a first cavity located beneath said radiating element, and a second feed line disposed in a configuration orthogonal to the first line and penetrating into a second cavity located in line with the first, a conductive part forming a coupling slot between the two cavities.
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Citations
9 Claims
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1. A feed device for a radiating element operating in dual polarization, said feed device comprising:
- means defining a first cavity, means defining a second cavity, said first cavity comprising an interior electrically conductive cavity wall at least partially enclosing said first cavity, said second cavity comprising an interior electrically conductive cavity wall at least partially enclosing said second cavity, said feed device further comprising a coupling device for electromagnetically coupling said cavities, a first feed line and a second feed line for transporting respective electromagnetic waves to said radiating element;
wherein said radiating element, said first cavity and said second cavity are respectively aligned along an imaginary principal axis defining a main direction of radiation of said radiating element;
wherein said first feed line penetrates into said first cavity and is oriented perpendicular to said principal axis; and
wherein said second feed line penetrates into said second cavity and is oriented perpendicular to said principal axis and orthogonal to said first feed line; and
wherein said coupling device is a coupling slot defined by a conductive member placed between said first and said second cavities, sized smaller than said cavities, spaced from said conductive cavity walls, and partially closing off adjacent ends of said cavities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- means defining a first cavity, means defining a second cavity, said first cavity comprising an interior electrically conductive cavity wall at least partially enclosing said first cavity, said second cavity comprising an interior electrically conductive cavity wall at least partially enclosing said second cavity, said feed device further comprising a coupling device for electromagnetically coupling said cavities, a first feed line and a second feed line for transporting respective electromagnetic waves to said radiating element;
Specification