Antenna arrangement in a metallic environment
First Claim
1. An arrangement comprising an external antenna (A) in the general form of a loop, at least one metallic element (10, 10′
- ) located in the vicinity of said antenna and having an aperture (18, 18′
) substantially opposite a surface delimited by the antenna and a slot (16, 16′
) forming an air gap through a thickness of the metallic element between an internal edge (21, 21′
) delimiting the aperture and an external edge (20, 20′
) of said metallic element, said metallic element having a space able to received a removable device (C) provided with an internal antenna (A′
) in the form of a loop, the external antenna being positioned directly in the vicinity of an external face (14, 14′
) of the metallic element.
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Accused Products
Abstract
The invention concerns an arrangement for an antenna (A) having the general shape of a loop, directly in the proximity of at least a metallic element (10). The invention is characterised in that each metallic element (10) comprises an orifice (18) arranged substantially opposite the surface defined by the antenna (A), and a slot (16) forming a gap width, arranged through the thickness of the metallic element (10), between the internal edge (21) delimiting the orifice (18) and the external edge (20) of said metallic element (10). The invention is applicable to scanners and radio frequency communication devices.
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Citations
12 Claims
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1. An arrangement comprising an external antenna (A) in the general form of a loop, at least one metallic element (10, 10′
- ) located in the vicinity of said antenna and having an aperture (18, 18′
) substantially opposite a surface delimited by the antenna and a slot (16, 16′
) forming an air gap through a thickness of the metallic element between an internal edge (21, 21′
) delimiting the aperture and an external edge (20, 20′
) of said metallic element, said metallic element having a space able to received a removable device (C) provided with an internal antenna (A′
) in the form of a loop, the external antenna being positioned directly in the vicinity of an external face (14, 14′
) of the metallic element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- ) located in the vicinity of said antenna and having an aperture (18, 18′
Specification