Radiation controller including reactive elements on a dielectric surface
First Claim
1. A device for controlling electromagnetic radiation emitted by a structure, the device having a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, wherein the surface impedance of the conductive surface is reactive.
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Abstract
A device for controlling electromagnetic radiation emitted by a structure is described. The device has a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation. As such, the array of conductors represents an effectively continuous conductive surface to the electromagnetic radiation and the surface impedance of the conductive surface (2) is reactive.
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Citations
25 Claims
- 1. A device for controlling electromagnetic radiation emitted by a structure, the device having a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, wherein the surface impedance of the conductive surface is reactive.
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10. An antenna comprising a conductive equipotential surface;
- using a device for controlling electromagnetic radiation emitted by a structure, the device having a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, wherein the surface impedance of the conductive surface is reactive, the reactive element of which is disposed parallel to the equipotential surface;
an emitter for emitting electromagnetic radiation that is guided between the equipotential surface and the reactive element; and
an actuating mechanism for adjusting the displacement between the equipotential surface and the reactive element so that the angle of propagation of a beam of electromagnetic radiation that leaks through the reactive element can be varied. - View Dependent Claims (11, 12, 16)
- using a device for controlling electromagnetic radiation emitted by a structure, the device having a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, wherein the surface impedance of the conductive surface is reactive, the reactive element of which is disposed parallel to the equipotential surface;
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25. An choke comprising a conductive cavity, one boundary of which is formed by a set of annular, concentric devices for controlling electromagnetic radiation emitted by a structure, the concentric devices having a reactive element comprising an array of conductors disposed on a dielectric surface such that the displacement between a conductor and any other conductor adjacent to it is small compared to the wavelength of the electromagnetic radiation thereby causing the array of conductors to represent an effectively continuous conductive surface to the electromagnetic radiation, wherein the surface impedance of the conductive surface is reactive with regions of dielectric disposed therebetween.
Specification