Sidelobe controlled radio transmission region in metallic panel
First Claim
1. A panel comprising:
- a metal layer; and
a tapered aperture in said metal layer, said tapered aperture comprised of an array of openings adapted to enable the transmission of a radio frequency signal through said metal layer;
wherein the relative transmission coefficient across said tapered aperture is at least about 90% at a center of said tapered aperture and less than about 40% at an edge of said tapered aperture.
4 Assignments
0 Petitions
Accused Products
Abstract
A region in a metallic panel that facilitates the transmission of radio frequency signals. The metallic panel may be included in a window such as the window of a vehicle or building. For example, the metallic panel may be used for heating or to reflect infrared radiation. An aperture is formed in the metallic panel to enable radio frequency signals to be transmitted through the metallic panel. The design of the aperture may be selected to enable the transmission of the desired frequency band. Furthermore, the aperture is designed such that there is a taper in the transmission amplitude and/or the phase to suppress lobing effects on the other side of the aperture. In an embodiment in which the metallic panel is used to conduct electric current, the aperture may be oriented such that the current may flow between the openings of the aperture. Accordingly, there may be uniform heating across the metallic panel without blocking the transmission of radio frequency signals in the desired frequency band.
247 Citations
30 Claims
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1. A panel comprising:
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a metal layer; and
a tapered aperture in said metal layer, said tapered aperture comprised of an array of openings adapted to enable the transmission of a radio frequency signal through said metal layer;
wherein the relative transmission coefficient across said tapered aperture is at least about 90% at a center of said tapered aperture and less than about 40% at an edge of said tapered aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A window comprising:
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a sheet of dielectric material;
a metal layer traversing said dielectric material; and
an aperture in said metal layer comprising a plurality of openings that are approximately parallel to each other, said openings arranged in a pattern having a middle portion and opposing edge portions, said openings in said middle portion being generally wider than said openings in said opposing edge portions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A window comprising:
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a sheet of dielectric material, a metal layer traversing said dielectric material; and
an aperture in said metal layer comprising a plurality of openings that are approximately parallel to each other, said openings arranged in a pattern having a middle portion and opposing edge portions;
wherein said openings in said middle portion are generally spaced closer together than said openings in said opposing edge portions. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification