Zoom interferometer antenna专利检索-脉冲电场电场物理专利检索查询-专利查询网

Zoom interferometer antenna

阅读：875发布：2023-07-28

专利汇可以提供Zoom interferometer antenna专利检索，专利查询，专利分析的服务。并且In surface wave antennas, including single antenna structures and plural structures comprising two antennas disposed with a common boresight on opposite sides of a common reference plane radiating into free space as an interferometer or with a reflector for monopulse, having exponential aperture distributions A(y) Ae ythe attenuation constant, Alpha , is altered by altering either the dielectric constant (permitivity), Epsilon , or the permeability, Mu , of a ferroelectric or ferromagnetic dielectric wave supporting surface by altering an electric or magnetic field therein; the gain and beamwidth are altered by altering the attenuation constant; in the interferometer, sensitivity or scale factor (difference is electrical phase per difference in angle of incidence) of incoming waves varies with variations in Alpha ; a monopulse embodiment utilizes a reflector, and the squint angle varies with variations in Alpha .，下面是Zoom interferometer antenna专利的具体信息内容。

权利要求

1. A variable sensitivity, surface wave interferometer antenna system comprising: a pair of surface wave antennas each comprising a surface wave supporting surface comprised of a dielectric material selected from the group consisting of ferroelectric materials and ferromagnetic materials and feed means for launching a surface wave on said wave supporting surface, each of said wave supporting surface structures being adjacent to a conducting reference plane which is between said two structures; and field means for applying to said material of both said antennas a controllably variable field, selected from the group consisting of electric fields and magnetic fields, said selected field being an electric field in the case where said selected material is a ferroelectric material, said selected field being a magnetic field in a case where said selected material is a ferromagnEtic material, thereby to alter the attenuation constant of said antenna, the variation in attenuation constant causing a variation in boresight sensitivity of said antenna system.

2. The antenna system according to claim 1 wherein said field means applies an electric field and said material comprises a ferroelectric dielectric material.

3. The antenna system according to claim 2 wherein said field means comprises a pair of plates disposed on opposite edges of said wave supporting surface material of both antennas, and means for impressing a variable voltage across said plates.

4. The antenna system according to claim 1 wherein said field means applies a magnetic field and said material comprises a ferromagnetic dielectric material.

5. The antenna system according to claim 4 wherein said field means comprises means including a low reluctance ferromagnetic path portion disposed adjacent to but separated from substantially all of said wave supporting surface material of both antennas, electric conductor means passing through the space between said magnetic path and said material, and means supplying a variable current to said electrical conductor.

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Zoom interferometer antenna

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