Antenna test shield
First Claim
1. A shielded signal coupler for transferring electromagnetic energy between a signal circuit and an antenna upstanding from a ground-plane surface, the coupler comprising:
- Shield means having electrically conductive walls defining a closed chamber, including end portions defining a first opening adapted to admit the antenna;
means for electrically connecting said walls adjacent the first opening with the surface;
coupling means disposed within the chamber in isolated relation with the walls and antenna and in coaxial, energy transferring relation with the antenna, said energy being shielded by an outer conductor of the coupling means and confined between the outer conductor and the antenna; and
signal conduction means for communicating the energy between said circuit and the coupling means through a second opening in said walls.
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Accused Products
Abstract
Apparatus for transferring electromagnetic signal energy between a signal circuit and an antenna that extends outwardly from a ground-plane surface includes a conductive shield that substantially encloses the antenna to confine the signal energy and to exclude all others. The shield has an open end to admit the antenna and suction-cup means disposed around the opening to mechanically connect the apparatus to the surface. A plug of dielectric material inside the open end includes a through passage and a recessed portion that conforms to a base of the antenna and operates to align the antenna within the shield. Conductive mesh lines the recessed portion and is electrically connected to the shield. Flexible contacts extend inwardly from the shield and engage mounting screws in the antenna base to electrically connect the shield to the surface. A conductive sleeve is mounted on the free end of the plug in coaxial, energy transfer relation with a longitudinal portion of the antenna and is electrically connected to a feed-through connector on the shield for connection to the signal circuit.
20 Citations
12 Claims
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1. A shielded signal coupler for transferring electromagnetic energy between a signal circuit and an antenna upstanding from a ground-plane surface, the coupler comprising:
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Shield means having electrically conductive walls defining a closed chamber, including end portions defining a first opening adapted to admit the antenna; means for electrically connecting said walls adjacent the first opening with the surface; coupling means disposed within the chamber in isolated relation with the walls and antenna and in coaxial, energy transferring relation with the antenna, said energy being shielded by an outer conductor of the coupling means and confined between the outer conductor and the antenna; and signal conduction means for communicating the energy between said circuit and the coupling means through a second opening in said walls. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification