Symmetrical Dielectric Filled Cylindrical Lens Antenna with Dual Polarized Conical Dielectric Feed
A dielectric filling and dielectric antenna technology, which is applied in the field of dual polarized conical dielectric feed symmetrical dielectric filled cylindrical lens antennas, can solve the problems of limited scanning range on the pitch plane, and achieve improved gain and pitch scanning range, high aperture efficiency, and weight light effect
Active Publication Date: 2018-03-09
山东星岭科技有限公司
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Problems solved by technology
The above-mentioned lens antenna can only achieve a single polarization, and the scanning range of the elevation plane is limited
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[0037] In the present invention, at the same operating frequency, when the height of the parallel plate waveguide is constant, different medium thicknesses will result in different propagation wavenumbers. We control the relative refractive index of the lens by selecting different medium thicknesses to make it conform to Generalized Lunbert's law distribution can realize compact lens antennas for various purposes. At the same time, in order to achieve the best antenna aperture efficiency, the dual-polarized feed antenna should be placed at the focal point of the cylindrical lens. The directional pattern of this dual-polarized conical dielectric feed symmetrical dielectric-filled cylindrical lens antenna is similar to that of a traditional cylindrical lens antenna. It can achieve a narrow beam in the horizontal plane and a very wide beam in the elevation plane. At the same time, due to the symmetry of the structure, this antenna can be used to generate multi-beam scanning, the ...
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The invention discloses a dual-polarized conical medium feed source symmetrical medium filled cylindrical lens antenna. The antenna comprises a metal-disc-shaped parallel plate waveguide, two mediums, a dual-polarized feed source antenna, wherein the metal-disc-shaped parallel plate waveguide is composed of an upper metal disc and a lower metal disc; the structures of the two mediums are the same, one surface of each of the two mediums is a flat surface, the two flat surfaces of the two mediums are tightly attached to the upper metal disc and the lower metal disc of the metal-disc-shaped parallel plate waveguide respectively, the other surfaces of the two mediums are arc-shaped surfaces, and a cavity body and the mediums between the upper metal disc and the lower metal disc of the metal-disc-shaped parallel plate waveguide jointly form a dual-polarized symmetrical medium filled cylindrical lens; and the dual-polarized feed source antenna is fixed at the position of the edge of the metal-disc-shaped parallel plate waveguide. The dual-polarized feed source antenna is a horizontally polarized conical medium antenna and an array thereof or a vertically polarized conical medium antenna and an array thereof or a dual-polarized conical medium antenna and an array thereof.
Description
technical field [0001] The invention relates to an antenna, in particular to a dual-polarized conical dielectric feed symmetrical dielectric-filled cylindrical lens antenna. Background technique [0002] Dielectric lens antennas are widely used in satellite communications, radar detection, and electronic countermeasures. Dielectric lens technology includes thin lens, ball lens, and cylindrical lens antenna. The biggest feature of these lens antennas is their simple structure, wide scanning range, and low-loss broadband operation. In 2001, the uniform spherical lens antenna jointly developed by the University of Toronto and the University of Michigan achieved multi-beam scanning with a coverage of 180° at 77GHz for the first time. The spherical lens antenna is fed by a horizontal semicircular array composed of 33 tapered slot antennas. Each unit generates a 3dB beam width of 5.5°, which can cover a horizontal scanning range of 33×5.5=181.5°. The feeding array can be conveni...
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IPC IPC(8): H01Q19/06H01Q21/00H01Q1/50
CPCH01Q1/50H01Q19/06H01Q21/00
Inventor 吴锡东杨帆
Owner 山东星岭科技有限公司