Multi-beam lens antenna
A lens antenna and multi-beam technology, which is applied to antennas, antenna arrays, electrical components, etc., can solve the problems of large space occupied by the lens, increased processing difficulty, and complex lens parameters, so as to achieve easy programming and solve processing difficulties. , the effect of facilitating large-scale promotion
Active Publication Date: 2013-09-11
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology
However, no matter how to improve the curved surface characteristics of the lens itself, the lens must exist in the form of a curved surface. On the one hand, the curved surface lens greatly increases the processing difficulty. more complex
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[0032] Light, as a kind of electromagnetic wave, when it passes through glass, because the wavelength of light is much larger than the size of atoms, we can use the overall parameters of the glass, such as the refractive index, rather than the detailed parameters of the atoms that make up the glass to describe The response of glass to light. Correspondingly, when studying the response of materials to other electromagnetic waves, the response of any structure in the material whose scale is much smaller than the wavelength of the electromagnetic wave to electromagnetic waves can also be described by the overall parameters of the material, such as the dielectric constant ε and magnetic permeability μ. By designing the structure of each point of the material, the dielectric constant and magnetic permeability of each point of the material are the same or different, so that the overall dielectric constant and magnetic permeability of the material are arranged in a certain order, and ...
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Abstract
The invention discloses a multi-beam lens antenna. The multi-beam lens antenna comprises a beam forming network and a plurality of feed sources connected with the beam forming network, and further comprises a flat metamaterial plate. The flat metamaterial plate is composed of a plurality of metamaterial sheet layers which are the same in refractive index distribution. Each metamaterial sheet layer comprises a base material and artificial microstructures arranged on the base material in a period mode. Electromagnetic waves emitted by the feed sources are transmitted in a plane electromagnetic wave mode after penetrating through the flat metamaterial board. Refractive index distribution of the metamaterial sheet layers is obtained through an initial phase method. Due to the fact that the flat metamaterial plate is used for replacing a lens in a traditional multi-beam lens antenna, the problems that a traditional lens is difficult to process, high in manufacturing cost and heavy in weight are solved. Electromagnetic parameter adjustment of the flat metamaterial plate manufactured by using the metamaterial principle is simple and convenient, processing of the flat metamaterial plate is simple, and the cost of the flat metamaterial plate is low. In addition, the refractive index distribution of the flat metamaterial plate is designed through the initial phase method, sequencing and coding of the process of refractive index design of the flat metamaterial plate can be easy to achieve, a user only needs to master use of codes, and the multi-beam lens antenna facilitates large-scale popularization.
Description
technical field [0001] The invention relates to a lens antenna, in particular to a multi-beam lens antenna. Background technique [0002] A multi-beam lens antenna is an antenna that produces multiple sharp beams that can be combined into one or several shaped beams to cover a specific airspace. Such as figure 1 as shown, figure 1 It is a structural schematic diagram of an existing multi-beam lens antenna. figure 1 In , the multi-beam lens antenna includes a beam forming network 100 , a plurality of feed sources 101 and a lens 102 . The beamforming network 100 is mainly composed of a variable power divider and a phase shifter, which can control the excitation amplitude and phase of each feed source, so that multiple sharp beams emitted by each feed source 101 are synthesized into a beam with a specific shape after passing through the lens 102. Shaped beam. [0003] Because the multi-beam lens antenna has the advantages of narrow transmitting beam, high gain, long transm...
Claims
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Login to View More IPC IPC(8): H01Q15/02H01Q19/06H01Q21/00
Inventor 刘若鹏季春霖岳玉涛尹小明
Owner KUANG CHI INST OF ADVANCED TECH