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Polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna

A Cassegrain antenna and metasurface technology, which is applied in the field of base station receiving antennas and vortex multi-beam metasurface Cassegrain antennas, can solve the problems of large space occupation and low communication capacity of metasurface antennas, and achieve increased Large communication capacity, overcoming the non-reconfigurable beam polarization mode, overcoming the single effect of beam mode value and polarization mode

Active Publication Date: 2020-11-24
XIDIAN UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to address the deficiencies in the prior art above, and propose a polarization-reconfigurable vortex multi-beam metasurface Cassegrain antenna, which is used to solve the problem of low communication capacity of vortex multi-beam metasurface antennas and the big space problem

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  • Polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna
  • Polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna
  • Polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with drawings and embodiments.

[0023] refer to figure 1 , to further describe the overall structure of the antenna of the present invention.

[0024] The present invention includes a support structure 3, an anisotropic metasurface primary reflector 1, a feed source 4 fixed at the center of the anisotropic metasurface primary reflector 1, and an active metasurface secondary reflector 2, the active metasurface secondary reflector The mirror 2 and the anisotropic metasurface primary reflector 1 are arranged in parallel at both ends of the support structure 3, the center normal of the active metasurface secondary reflector 2 coincides with the center normal of the anisotropic metasurface primary reflector 1, and the feed The phase center of the source 4 coincides with the focal point of the active metasurface sub-mirror 2 .

[0025] The feed source 4 in the embodiment of the present invention adopts bu...

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Abstract

The invention discloses a polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna, which comprises an anisotropic metasurface main reflector, an active metasurface auxiliary reflector, a support structure and a feed source, and realizes the fusion design of the anisotropic metasurface main reflector and a polarization conversion active metasurface auxiliary reflecting surface.According to the polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna, the capacitance value of a varactor on the active metasurface auxiliary reflector is adjusted, and electromagnetic waves in different polarization states are generated to excite the anisotropic metasurface main reflector, so that the polarization mode of each beam of the vortex multi-beam metasurface antenna is reconfigurable, multiplexing of vortex beams in different polarization modes in a single channel is realized, and the communication capacity of the existing vortex multi-beam metasurface antenna is increased.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a polarization reconfigurable vortex multi-beam metasurface Cassegrain antenna in the field of antenna technology. The invention can be used for base station receiving antennas in the communication field. [0002] technical background [0003] Due to the good orthogonality between different modes of the vortex wave, a large number of same-frequency multiplexing channels can be formed, which greatly improves the communication capacity. [0004] The phase mutation metasurface constructed based on the generalized Snell's law can excite vortex electromagnetic waves by adjusting the phase gradient between the metasurface units, and has a simple structure and is easy to process. [0005] Using a single antenna to generate multiple beams can form multiple channels in space, which greatly improves the communication coverage of the antenna, and when the polarization modes of ...

Claims

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Application Information

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IPC IPC(8): H01Q15/14H01Q15/24H01Q1/12H01Q1/38
CPCH01Q1/12H01Q1/38H01Q15/14H01Q15/24
Inventor 杨锐高鸣
Owner XIDIAN UNIV
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