Vortex wave two-dimensional scanning system integrating Rodman lens and active metasurface

A two-dimensional scanning and metasurface technology, which is applied to the structural connection of antenna grounding switches, electrical components, and antennas. Small footprint, increased signal coverage, and avoidance of stack structure effects

Active Publication Date: 2021-09-07
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the antenna uses two-dimensional stacked lenses to realize beam scanning in two-dimensional space, it greatly increases the complexity and space occupied by the antenna structure, and the processing cost is relatively high, which greatly limits its applicable scenarios.

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  • Vortex wave two-dimensional scanning system integrating Rodman lens and active metasurface
  • Vortex wave two-dimensional scanning system integrating Rodman lens and active metasurface
  • Vortex wave two-dimensional scanning system integrating Rodman lens and active metasurface

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Embodiment Construction

[0033] Embodiments of the present invention and effects are further described below in conjunction with the accompanying drawings:

[0034] refer to figure 1 In this embodiment, a vortex wave two-dimensional scanning system that combines a Rodman lens and an active metasurface includes: an active transmission metasurface 1 and a feed source 2, and the operating frequency is 6 GHz; the active transmission metasurface 1 Located above the feed source 2, in order to achieve the best radiation effect of the system, the distance between the two should be between 0.8 times the wavelength and 1.2 times the wavelength. The active transmission metasurface 1 is composed of M×N active transmission units, Where M≥2, N≥2, this embodiment sets the distance between the source transmission metasurface 1 and the feed source 2 to be 50mm, that is, the length of one wavelength; set M=16, N=16.

[0035] refer to figure 2 , the feed 2 uses a Rodman lens antenna 2, such as figure 2 As shown in ...

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Abstract

The invention discloses a vortex wave two-dimensional scanning system integrating a Rodman lens and an active metasurface, and mainly solves the problems of complex structure and lower communication capacity in the prior art. The vortex wave two-dimensional scanning system comprises an active transmission metasurface (1) and a feed source (2), the feed source adopts a single-layer Rodman lens antenna, and the active transmission metasurface is composed of a plurality of active transmission units; each active transmission unit comprises an upper layer and a lower layer which are the same in structure, and each layer comprises a dielectric substrate, a metal patch, a feed strip line, a metal column and a variable capacitance diode; the metal patch and the feed strip line are respectively printed on the upper surface and the lower surface of the dielectric substrate, and are connected through the metal column penetrating through the dielectric substrate; the variable capacitance diode is loaded in the center of the metal patch, and the two-dimensional scanning of vortex beams is achieved by changing the bias voltage of the variable capacitance diode and the input port of the Rodman lens antenna. According to the invention, the system structure is simplified, vortex beams can be generated, the communication capacity of the system is increased, and the system can be used for wireless communication and radar detection.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a vortex wave two-dimensional scanning antenna, which can be used for wireless communication and radar detection. [0002] technical background [0003] Due to the good orthogonality between different modes of vortex electromagnetic waves, a large number of channels with the same frequency can be formed, which greatly improves the communication capacity. [0004] Metasurfaces are increasingly used in antenna design due to their strong ability to regulate electromagnetic waves, low profile, low cost, simple fabrication, and easy integration. Among them, the active metasurface has a more flexible ability to control electromagnetic waves than traditional metasurfaces due to the loading of electronic devices with adjustable electrical characteristics such as varactor diodes. [0005] Multi-beam antennas are widely used in communication systems. Among them, beam scanning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q15/00H01Q15/02H01Q19/06H01Q23/00H01Q3/46
CPCH01Q1/50H01Q15/0086H01Q15/02H01Q19/06H01Q3/46H01Q23/00Y02D30/70
Inventor 杨锐高鸣
Owner XIDIAN UNIV
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