A Reflective Metasurface and Antenna with Dual Linear Polarization Independent Control
An independent control, dual-linear polarization technology, applied to antennas, electrical components, etc., can solve problems such as unsuitable linear polarization units, and achieve the effects of strong engineering realizability, low cross polarization, and simple unit structure
Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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Problems solved by technology
Reconfigurable performance is easier to achieve with square patches loaded with delay lines, although the bandwidth is relatively narrow
In addition, using the geometric phase and the propagation phase, it is possible to realize the dual circular polarization independent control reflection unit for broadband operation, but this method is not suitable for the design of the linear polarization unit
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[0025] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.
[0026] The invention provides a dual-polarization 1-bit reflection unit, which can independently control the reflection phases of horizontal polarization and vertical polarization. Using this unit, a dual-polarized reflectarray antenna is designed. When the horizontally polarized port is fed, a horizontally polarized outgoing wave of -15° can be obtained, and when the vertically polarized port is fed, a vertically polarized outgoing wave of 20° can be obtained. . Taking the design of the Ka band ...
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The invention discloses a reflective metasurface and an antenna independently controlled by double-line polarization, which are realized through a single-layer printed circuit board (PCB) process. The invention utilizes 1-bit phase compensation to design a reflection unit with single-layer structure, broadband operation and independent polarization control. The 1-bit unit includes a metal ground and a square patch loaded with a cross slit. Two pairs of small metal patches are used to control the two states of the 1-bit phase compensation of the horizontal polarization and the vertical polarization respectively, achieving high-isolation dual-polarization independence control. By using the phase compensation of the 1-bit unit, it is possible to independently control the reflection of incident waves of horizontal polarization and vertical polarization to point in different directions, thereby realizing a 1-bit reflectarray antenna with dual polarization independently controlled. The single-layer structural unit of the present invention can be realized by PCB technology, and has broadband characteristics and reconfigurable potential. The reflective metasurface and antenna designed by using this unit have the ability of dual polarization independent control, reconfigurable potential, and easy engineering realization Etc.
Description
technical field [0001] Based on the currently widely used 1-bit phase compensation reflective metasurface, the present invention proposes a 1-bit reflective unit with independent control of broadband dual-line polarization, and provides a reflector that can independently control horizontally polarized and vertically polarized electromagnetic waves The invention relates to a design and realization method of a metasurface and an antenna, and belongs to the technical field of reflecting metasurfaces and antennas. Background technique [0002] In order to realize the control of electromagnetic waves, reflective metasurfaces that can control specific modes and frequencies of electromagnetic waves have been extensively and deeply studied in recent years. Due to its simple structure, easy design, and only two phase compensation states, reflective metasurfaces with 1-bit phase compensation are widely used in electromagnetic wave propagation control and reflectarray antenna design. ...
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IPC IPC(8): H01Q15/00
CPCH01Q15/0086H01Q15/002
Inventor 王海明尹杰茜陈志宁洪伟
Owner SOUTHEAST UNIV