Antenna feeding network
First Claim
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1. An antenna feeding network for a multi-radiator antenna, said feeding network comprising at least one substantially air filled coaxial line, each coaxial line comprising:
- a central inner conductor;
an elongated outer conductor surrounding the central inner conductor; and
an elongated rail element slidably arranged inside the outer conductor, said rail element being longitudinally movable in relation to said conductors,wherein at least one elongated rail element is provided with at least two dielectric elements being attached thereto.
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Abstract
An antenna feeding network for a multi-radiator antenna. The feeding network comprises at least one substantially air filled coaxial line, each comprising a central inner conductor, an elongated outer conductor surrounding the central inner conductor, and an elongated rail element slideably movably arranged inside the outer conductor. The rail element is longitudinally movable in relation to at least the outer conductor.
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Citations
30 Claims
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1. An antenna feeding network for a multi-radiator antenna, said feeding network comprising at least one substantially air filled coaxial line, each coaxial line comprising:
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a central inner conductor; an elongated outer conductor surrounding the central inner conductor; and an elongated rail element slidably arranged inside the outer conductor, said rail element being longitudinally movable in relation to said conductors, wherein at least one elongated rail element is provided with at least two dielectric elements being attached thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A multi radiator antenna comprising an electrically conductive reflector, at least one radiating element arranged on said reflector and an antenna feeding network, said radiating elements being connected to said antenna feeding network, and said antenna feeding network comprising at least one substantially air filled coaxial line, each coaxial line comprising:
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a central inner conductor; an elongated outer conductor surrounding the central inner conductor; and an elongated rail element slidably arranged inside the outer conductor, said rail element being longitudinally movable in relation to said conductors, wherein at least one elongated rail element is provided with at least two dielectric elements being attached thereto. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27)
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24. A method for manufacturing a substantially air filled coaxial line for a multi-radiator base station antenna feeding network, said method comprising:
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providing a central inner conductor, an elongated outer conductor, providing an elongated rail element adapted to be slidably movable inside the outer conductor, providing at least two dielectric elements; and attaching said dielectric elements to said elongated rail element, arranging said central inner conductor on said elongated rail element, sliding said elongated rail element with said inner conductor arranged thereon into said outer conductor such that said outer conductor together with said inner conductor form a substantially air filled coaxial line. - View Dependent Claims (28, 29, 30)
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Specification