A Cassegrain-type Metamaterial Antenna
A metamaterial and antenna technology, applied in the field of communication, can solve the problems of high cost and difficult processing of Cassegrain antennas, and achieve the effect of easy manufacturing and low cost
Active Publication Date: 2016-08-03
KUANG CHI INST OF ADVANCED TECH +1
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- Application Information
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a Cassegrain-type metamaterial antenna with simple processing and low manufacturing cost for the existing Cassegrain antennas that are difficult to process and high in cost
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[0037] Such as Figure 1 to Figure 5 As shown, the Cassegrain-type metamaterial antenna according to the present invention includes a feed source 1 and a reflective element 200 disposed in front of the feed source 1 and a converging metamaterial plate 100, the converging metamaterial plate 100 includes a core layer 10, the The core layer 10 includes at least one core layer sheet 11, the core layer sheet layer includes a sheet-shaped substrate 13 and a plurality of artificial microstructures 12 arranged on the substrate 13, the core layer sheet layer 11 according to the refractive index The distribution can be divided into a circular area Y located in the middle and multiple annular areas distributed around the circular area Y and concentric with the circular area (represented by H1, H2, H3, H4, H5 in the figure) , the refractive index at the same radius in the circular area Y and the annular area is the same, and the refractive index gradually decreases with the increase of th...
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The invention discloses a Cassegrain type metamaterial antenna which comprises a feed source, a reflection element and a convergence metamaterail plate. The convergence metamaterial plate comprises a core layer which comprises at least one core layer slice layer. The core layer slice layer comprises a slice base material and a plurality of artificial micro structures. The core layer slice layer can be divided into a round area at the middle position and a plurality of annular areas distributed on the periphery of the round area according to refraction rate distribution, the round area and the annular area are identical in refraction rate at the position of identical radius, the refraction rate is reduced gradually with increase of the refraction rate, the minimum of the refraction rate of the round area is smaller than the maximum of the refraction rate of the adjacent annular area, and the minimum of the refraction rate of the annular area on the inner side is smaller than the maximum of the refraction rate of the annular area on the outer side in two adjacent annular areas. By means of the Cassegrain type metamaterial antenna, the slice convergence metamaterial plate replaces the traditional paraboloid face. The Cassegrain type metamaterial antenna is easy to manufacture and process and low in cost.
Description
technical field [0001] The invention relates to the communication field, and more specifically, relates to a Cassegrain-type metamaterial antenna. Background technique [0002] The Cassegrain antenna consists of three parts, namely the main reflector, sub-reflector and radiation source. The main reflector is a paraboloid of revolution, and the secondary reflector is a hyperboloid of revolution. Structurally, one focus of the hyperboloid coincides with the focus of the paraboloid, the focal axis of the hyperboloid coincides with the focal axis of the paraboloid, and the radiation source is located at the other focus of the hyperboloid, as shown in the figure below. It is a reflection of the electromagnetic wave emitted by the radiation source by the sub-reflector, reflecting the electromagnetic wave to the main reflector, and then obtaining a plane wave beam in the corresponding direction after being reflected by the main reflector to achieve directional emission. [0003] ...
Claims
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IPC IPC(8): H01Q19/06H01Q19/10H01Q15/02H01Q15/23
Inventor 刘若鹏季春霖岳玉涛尹小明
Owner KUANG CHI INST OF ADVANCED TECH