CN-118487044-B - Reconstruction structure for generating circularly polarized beam based on transmission type phase discontinuous surface

CN118487044BCN 118487044 BCN118487044 BCN 118487044BCN-118487044-B

Abstract

A reconstruction structure for generating circularly polarized beams based on a transmission type phase discontinuous surface belongs to the reconstruction field. Conventional optical rotation and beam steering techniques typically rely on bulky and complex design devices to achieve these functions, which not only limit the integration of the system, but also reduce the efficiency of signal processing. The flat plate structure is composed of in multiplied by in integrated bodies which are arranged in an array mode, the types of the integrated bodies comprise n types, the cross section shapes of a first metal structure layer, a second metal structure layer and a third metal structure layer are elliptical rings, the corners of the first metal structure layer, the second metal structure layer and the third metal structure layer on each integrated body are not identical, the corners are included angles between the long diameter and the negative direction of the elliptical rings, the left-hand circular polarized wave phase or the right-hand circular polarized wave phase of the n types of integrated bodies are sequentially different by m degrees, and the arrangement range of the left-hand circular polarized wave phase or the right-hand circular polarized wave phase of the n types of integrated bodies is 0-2 pi. For generating a circularly polarized beam.

Inventors

ZHAO SICHENG
Yuan Lechi
YANG SHUAI
ZHANG KUANG

Assignees

哈尔滨工业大学

Dates

Publication Date: 20260505
Application Date: 20240527

Claims (4)

1. The reconstruction structure for generating circular polarized beams based on the transmission type phase discontinuous surface is characterized by being a flat plate structure formed by in multiplied by in integrated bodies arranged in an array mode, wherein the types of the integrated bodies comprise n types; In the flat structure, n kinds of integrated bodies are sequentially arranged along the transverse direction or the longitudinal direction of the array, when n kinds of integrated bodies are sequentially arranged along the transverse direction, each row is the same integrated body, and when n kinds of integrated bodies are sequentially arranged along the longitudinal direction, each row is the same integrated body; Each integrated body is formed by sequentially bonding a first metal structure layer (1), a first dielectric layer (4), a second metal structure layer (2), a second dielectric layer (5) and a third metal structure layer (3) from top to bottom, wherein the cross sections of the first metal structure layer (1), the second metal structure layer (2) and the third metal structure layer (3) are elliptical rings, and the first dielectric layer (4) and the second dielectric layer (5) are rectangular plates with preset thickness; the corners of the first metal structure layer (1), the second metal structure layer (2) and the third metal structure layer (3) on each integrated are not identical, the horizontal left direction is taken as a negative direction in the plane where the flat plate structure is positioned, and the corners are included angles between the elliptical annular long diameter and the negative direction; the phases of the left-hand circularly polarized waves or the right-hand circularly polarized waves of the n kinds of integrated products are sequentially different by m DEG, and the arrangement range of the phases of the left-hand circularly polarized waves or the right-hand circularly polarized waves of the n kinds of integrated products is 0 to 2 ; Each layer of metal structure can be independently rotated into different rotation angles to adjust the phase delay, so that the polarization and the propagation direction of the incident circularly polarized wave are accurately controlled.
2. The reconstruction structure for generating a circularly polarized beam based on a transmissive phase discontinuity surface according to claim 1, wherein when n is 8 and m is 45 °, the left-hand circularly polarized wave phase or right-hand circularly polarized wave phase arrangement of the 8 kinds of integrated bodies is 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 ° and 360 ° in order.
3. The reconstruction structure for generating a circularly polarized beam based on a transmissive phase discontinuity surface according to claim 2, wherein the 8 kinds of the integrated circuits are respectively a first integrated circuit, a second integrated circuit, a third integrated circuit, a fourth integrated circuit, a fifth integrated circuit, a sixth integrated circuit, a seventh integrated circuit and an eighth integrated circuit, wherein the first integrated circuit has a first metal structure layer with a rotation angle of 0 °, the second metal structure layer has a rotation angle of 140 °, and the third metal structure layer has a rotation angle of 125 °; The corner of the first metal structure layer of the second integrated is 0 DEG, the corner of the second metal structure layer is 64 DEG, and the corner of the third metal structure layer is 160 DEG; the rotation angle of the first metal structure layer of the third integrated is 0 degree, the rotation angle of the second metal structure layer is 80 degrees, and the rotation angle of the third metal structure layer is 0 degree; The corner of the first metal structure layer of the fourth integrated is 0 degrees, the corner of the second metal structure layer is 110 degrees, and the corner of the third metal structure layer is 20 degrees; the corner of the first metal structure layer of the fifth integrated is 0 degrees, the corner of the second metal structure layer is 115 degrees, and the corner of the third metal structure layer is 30 degrees; The rotation angle of the first metal structure layer of the sixth integrated is 0 degrees, the rotation angle of the second metal structure layer is 115 degrees, and the rotation angle of the third metal structure layer is 55 degrees; The rotation angle of the first metal structure layer of the seventh integrated is 0 degrees, the rotation angle of the second metal structure layer is 150 degrees, and the rotation angle of the third metal structure layer is 75 degrees; the first metal structure layer of the eighth integrated has a corner of 0 °, the second metal structure layer has a corner of 170 °, and the third metal structure layer has a corner of 110 °.
4. Reconstruction structure for generating a circularly polarized beam based on a transmissive phase-discontinuous surface according to claim 1, characterized in that each integrated further comprises an adhesive layer (6); the bonding layer (6) is bonded between the second metal structure layer (2) and the first dielectric layer (4).

Description

Reconstruction structure for generating circularly polarized beam based on transmission type phase discontinuous surface Technical Field The invention relates to reconstruction of circularly polarized beams, and belongs to the field of reconstruction. Background In microwave communication and radar systems, optical rotation response and beam steering are key technologies that have a direct impact on the transmission quality of the signal and the detection capabilities of the system. Conventional optical rotation and beam steering techniques typically rely on bulky and complex design devices to achieve these functions, which not only limit the integration of the system, but also reduce the efficiency of signal processing. Along with the rapid development of micro-nano electromagnetics and metamaterial technology, by designing an artificial structure surface (namely a phase discontinuous surface) with special electromagnetic response, precise control of a wave beam in a microwave frequency band is possible. This approach provides a new technological path for achieving compact, efficient optical rotation response and beam steering. Disclosure of Invention The invention aims to solve the problems that the traditional optical rotation response and beam direction control technology generally depends on a device with huge volume and complex design to realize the functions, which not only limits the integration level of a system, but also reduces the efficiency of signal processing, and proposes a reconstruction structure for generating a circularly polarized beam based on a transmission type phase discontinuous surface. Generating a reconstruction structure of a circularly polarized beam based on a transmission type phase discontinuous surface, wherein the reconstruction structure is a flat plate structure formed by in multiplied by in integrated bodies arranged in an array manner, and the types of the integrated bodies comprise n types, wherein n is a positive integer; In the flat structure, n kinds of integrated bodies are sequentially arranged along the transverse direction or the longitudinal direction of the array, when n kinds of integrated bodies are sequentially arranged along the transverse direction, each row is the same integrated body, and when n kinds of integrated bodies are sequentially arranged along the longitudinal direction, each row is the same integrated body; Each integrated body is formed by sequentially bonding a first metal structure layer, a first medium layer, a second metal structure layer, a second medium layer and a third metal structure layer from top to bottom, wherein the cross sections of the first metal structure layer, the second metal structure layer and the third metal structure layer are elliptical and annular, and the first medium layer and the second medium layer are rectangular plates with preset thickness; The corners of the first metal structure layer, the second metal structure layer and the third metal structure layer on each integrated are not identical, the horizontal left direction is taken as a negative direction in the plane where the flat plate structure is positioned, and the corners are included angles between the elliptic annular long diameter and the negative direction; the phases of the left-hand circularly polarized waves or the right-hand circularly polarized waves of the n kinds of integrated products are sequentially different by m degrees, and the arrangement range of the phases of the left-hand circularly polarized waves or the right-hand circularly polarized waves of the n kinds of integrated products is 0 to 2 pi. Preferably, when n is 8 and m is 45, the left-hand circularly polarized wave phase or right-hand circularly polarized wave phase arrangement of the 8 kinds of integrated bodies is 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 ° and 360 ° in order. Preferably, the 8 kinds of integrated circuits are respectively a first integrated circuit, a second integrated circuit, a third integrated circuit, a fourth integrated circuit, a fifth integrated circuit, a sixth integrated circuit, a seventh integrated circuit and an eighth integrated circuit, wherein the angle of rotation of the first metal structure layer of the first integrated circuit is 0 DEG, the angle of rotation of the second metal structure layer is 140 DEG, and the angle of rotation of the third metal structure layer is 125 DEG; The corner of the first metal structure layer of the second integrated is 0 DEG, the corner of the second metal structure layer is 64 DEG, and the corner of the third metal structure layer is 160 DEG; the rotation angle of the first metal structure layer of the third integrated is 0 degree, the rotation angle of the second metal structure layer is 80 degrees, and the rotation angle of the third metal structure layer is 0 degree; The corner of the first metal structure layer of the fourth integrated is 0 degrees, the corner of the second metal structure layer is 1