CN114583463B - Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface - Google Patents
Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface Download PDFInfo
- Publication number
- CN114583463B CN114583463B CN202210340791.7A CN202210340791A CN114583463B CN 114583463 B CN114583463 B CN 114583463B CN 202210340791 A CN202210340791 A CN 202210340791A CN 114583463 B CN114583463 B CN 114583463B
- Authority
- CN
- China
- Prior art keywords
- airy
- metal
- elc
- reconfigurable
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/002—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices being reconfigurable or tunable, e.g. using switches or diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/246—Polarisation converters rotating the plane of polarisation of a linear polarised wave
- H01Q15/248—Polarisation converters rotating the plane of polarisation of a linear polarised wave using a reflecting surface, e.g. twist reflector
Landscapes
- Aerials With Secondary Devices (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a reconfigurable millimeter wave Airy beam forming device based on an optical machine structural type super surface, which is applied to the fields of self-converging beam construction, plasma, particle control and the like and aims at solving the problems that the existing approximate diffraction-free Airy beam forming device is difficult to generate and regulate beams; the reconfigurable millimeter wave Airy beam forming super surface takes the intensity of incident electromagnetic waves as a regulating variable, so that the unit structure in the super surface array jumps from one resonance state to another resonance state, and further the electromagnetic response characteristics of the unit structure in the super surface are dynamically controlled in real time, two wave fronts in different states are generated, a more flexible reconfigurable function is realized, and a new thought is provided for dynamically generating approximate diffraction-free Airy beams.
Description
Technical Field
The invention belongs to the fields of plasma, self-converging light beams, particle control and the like, and particularly relates to an optical nonlinear tunable super-surface.
Background
Diffraction is a basic characteristic of electromagnetic wave transmission, and due to diffraction, energy is gradually dispersed in the electromagnetic wave propagation process, and along with the continuous enhancement of demands of long-distance transmission fields such as military and communication, diffraction is expected to be eliminated, and the transmission loss of a wave beam is reduced. Airy beams (Airy beams) are attracting attention due to the singular characteristics of no diffraction, self-bending, self-healing and the like, and the amplitudes and phases of the beams meet the Airy function and simultaneously meet the beam equation similar to Schrodinger, but the energy of the beams is infinite without diffraction in practice and does not exist in a strict sense. At present, an approximate diffraction-free Airy beam (hereinafter referred to as an Airy beam) is mainly constructed in a toe-cutting mode, and the approximate diffraction-free Airy beam with limited energy has better diffraction-free characteristics within a certain transmission distance and still has the characteristic of self-bending transmission. The non-diffraction, transverse self-bending acceleration and self-healing characteristics enable the Airy beam to have good application potential in the fields of plasma, optical manipulation, self-converging beams and the like. Generally, according to the equation characteristics of the Airy beam, the spatial light modulator is used for performing cubic phase modulation on the Gaussian beam to generate the Airy beam, but the Airy beam is large in size and low in stability. In recent years, many researchers have generated an airy beam by using a super-surface, but after the super-surface is designed and formed, electromagnetic wave response characteristics thereof in a predetermined design frequency band are cured and are not changeable, and do not have a function reconfigurable characteristic. The currently proposed electronic control, temperature control and mechanical regulation tuning type reconfigurable super-surface needs a large-scale and complex active device control circuit if the unit structure of each frequency selection surface is required to be regulated and controlled independently to regulate and control the electromagnetic wave front, and has the problems of large volume, high power consumption, low cost, low reliability, limited applicability and application field and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a reconfigurable Airy beam forming device based on an optical mechanical structure type super surface, which regulates and controls the amplitude and the phase of cross polarization reflected waves of a unit structure through the rotation angle of a metal ELC resonant ring.
The invention adopts the technical scheme that: reconfigurable Airy wave beam forming device based on optical machine structural type super surface, including a plurality of periodic arrangement's subarray, every subarray includes a plurality of unit structure, and unit structure is from last down in proper order: a metal ELC resonant ring, a flexible FPC, and a metal reflective backplate; a metal ELC resonant ring is printed on the flexible FPC, a hollow layer is arranged between the flexible FPC and the metal reflection backboard, and the flexible FPC is fixed on an anchor point of the metal reflection backboard through a supporting arm;
taking the state that the transverse axis of the metal ELC resonant ring capacitor is perpendicular to the supporting arm as the initial position of the metal ELC resonant ring; taking the initial position as a reference, the clockwise rotation angle of the metal ELC resonance around the center of the metal ELC resonance is a negative angle, and the anticlockwise rotation angle of the metal ELC resonance around the center of the metal ELC resonance is a positive angle;
and determining the rotation angle of the metal ELC resonant ring in each unit structure in each subarray relative to the initial position according to the amplitude and phase information of the preset Airy wave beam at the initial position in the space propagation.
The invention has the beneficial effects that: the reconfigurable millimeter wave Airy beam forming device based on the optical machine structural type super surface can realize two states of on and off generated by an Airy beam under the excitation of two incident waves with different intensities, and further reversely calculates the array information of the unit structure according to the relation between the wave front (amplitude and phase information) of the Airy beam and the cross polarization reflection wave amplitude phase and rotation angle of the unit structure, so that a subarray is constructed, the unit structure in the subarray is not sufficiently deformed under the excitation of electromagnetic induction ampere force under a certain incident wave excitation (the power is A), the Airy beam with the preset design can be generated, the unit structure in the subarray generates larger electromagnetic induction ampere force under the excitation of the incident wave with the other intensity (the power is B), the electromagnetic induction ampere force drives the mechanical vibration structure to deform, the resonance state of the unit structure is changed, the amplitude and the phase of the preset design of the Airy beam are not met, the Airy beam is not generated any more, and the on and off states generated finally are realized. The incident electromagnetic wave is used as a variable to regulate and control the super surface, so that the tunable super surface is simpler in tuning function compared with a tunable super surface loaded with an active device.
The invention analyzes based on the nonlinear effect of light in the super surface unit structure, provides a new thought for dynamically generating approximate diffraction-free Airy beam forming, and can more flexibly realize the regulation and control on the Airy beam generation by applying incident wave excitation with different intensities.
Drawings
Fig. 1 is a schematic diagram of a unit structure of a reconfigurable millimeter wave Airy beam forming device based on an optical machine structural type super surface;
FIG. 2 is a graph showing the relationship between amplitude, phase and rotation angle of cross polarized reflected waves of a reconfigurable millimeter wave Airy beam forming device unit based on an optical-mechanical structure type super surface;
FIG. 3 is a matlab simulated Airy beam propagation trace provided by the present invention;
wherein, (a) is the propagation characteristic of the Airy beam, and (b) is the amplitude and phase information of the Airy beam at the initial position (z=0);
FIG. 4 is a subarray of an Airy beam of a predetermined design constructed by hfss provided by the present invention;
wherein, (a) is a side view and (b) is a top view;
FIG. 5 is a hfss simulation result provided by the present invention;
wherein, (a) is the electric field intensity of the subarray simulation result, (b) is the comparison of the simulation result of the amplitude of the normalized electric field at the position with the propagation distance of 50mm and the theoretical result, (c) is the comparison of the simulation result of the amplitude of the normalized electric field at the position with the propagation distance of 100mm and the theoretical result, and (d) is the comparison of the simulation result of the amplitude of the normalized electric field at the position with the propagation distance of 200mm and the theoretical result;
FIG. 6 is a graph showing the magnitude of deformation displacement of the unit structure under different applied electromagnetic wave intensities for the comsol analysis provided by the present invention;
wherein, (a) is the deformation displacement of the unit structure under the condition of applying 1W incident electromagnetic wave excitation, and (b) is the deformation displacement of the unit structure under the condition of applying 100W incident electromagnetic wave excitation;
FIG. 7 is a graph of the cross polarized wave electric field amplitude of an equivalent subarray constructed by hfss simulation under the excitation of another external electromagnetic wave;
fig. 8 is a top view of the hfss construction optical mechanical structure based super surface reconfigurable Airy beamforming device provided by the invention.
Detailed Description
To facilitate understanding of the technical content of the present invention by those skilled in the art, the following technical terms are first described:
1. lateral length of resonant ring capacitor
The capacitor transverse axis length, which may also be referred to in the art as the resonant ring, is defined as the capacitor transverse axis, i.e., the portion of the ELC metal resonant ring shown in fig. 1 that corresponds to the capacitance, and is the portion of the length m shown in fig. 1.
The present invention is further explained below with reference to the drawings.
The reconfigurable millimeter wave Airy beam forming device unit structure based on the optical-mechanical structure type super surface is a four-layer structure: metal ELC resonance ring, flexible FPC medium, hollow layer, metal backplate, specifically:
the flexible FPC medium is printed with a metal ELC resonant ring, and the flexible FPC medium is fixed on an elongated anchor point on the metal backboard through a supporting arm, and the anchor point supports the flexible FPC medium material, so that the middle of the flexible FPC medium layer and the metal backboard is hollow. The ELC metal resonant ring is made of copper, the flexible FPC dielectric layer is a flexible circuit board, and the metal reflection backboard is made of aluminum. The width of the flexible FPC medium supporting arm is 0.6mm, the length is 2mm, the longitudinal period p_y of the unit structure is 8mm, the transverse period p_x_all is 5mm, the period d of the metal ELC resonant ring is 2.5mm, the transverse length m of the resonant ring capacitor is 1mm, the capacitor distance a is 0.4mm, the width n of the resonant ring is 0.3mm, the thickness of the metal ELC resonant ring is 0.018mm, the thickness of the flexible FPC medium material is 0.025mm, and the thickness of the metal reflective backboard is 3mm.
The flexible FPC medium layer comprises a middle part of the printed metal ELC resonant ring and four supporting arms connected with the middle part, and the flexible FPC medium layer is in an I shape as a whole. The length of the supporting arm is in the direction of the two transverse directions of the I-shaped.
In the embodiment, the center of the ELC resonant ring is set as an origin, and the position of the transverse axis of the metal ELC resonant ring capacitor in the direction perpendicular to the length of the supporting arm is used as the initial position of the metal ELC resonant ring; taking the initial position as a reference, rotating clockwise around the original point to form a negative angle, and rotating anticlockwise to form a positive angle; as shown in fig. 1, the metal ELC resonant ring has a bilateral symmetry structure, so that the theoretical rotation angle range should be [ -90 °,90 ° ]; the rotation angle of the metal ELC resonant ring at the initial position is 0 °.
The amplitude and the phase of the cross polarization reflected wave are regulated and controlled by regulating and controlling the rotation angle of the unit structures, the unit structure parameter information in the subarray is reversely calculated according to the amplitude and the phase information of the Airy wave beam with preset design at the initial position, the number of the unit structures in the subarray is 21, the rotation angles of the 21 unit structures are 7.5 degrees, -10 degrees, -14.5 degrees, 0.7 degrees, 16.5 degrees, 13.5 degrees, -3.1 degrees, -19.5 degrees, -19 degrees, -6 degrees, 12 degrees, 29 degrees, 45 degrees, 33 degrees, 22 degrees, 14 degrees, 8 degrees, 4.5 degrees, 2.2 degrees, 1.2 degrees and 0.9 degrees, and the unit structures in the subarray are separated by 1mm.
Embodiment one:
the embodiment comprises the following steps: (1) the shape of the cell structures in the array; (2) the material of the cell structure in the array; (3) the size of the cell metal resonant ring in the array; (4) cell hollow layer size in the array; (5) the unit structure realizes the arrangement mode of the periodic array; (6) a period of a cell structure in the array;
referring to fig. 1, according to the reconfigurable millimeter wave Airy beam forming device unit structure and the geometric dimension based on the optical mechanical structure type super surface, a metal ELC resonant ring is printed on a flexible FPC dielectric material, and is fixed on an elongated fixed anchor point of a metal reflection back plate through a cantilever, so that the flexible FPC dielectric material and the metal reflection back plate are hollow, under the excitation of incident waves (power a and power B for short) with two different intensities, under the low power a, the ELC metal resonant ring generates a strong electromagnetic resonant effect, reverse induced current is generated between the ELC resonant ring and the metal reflection back plate, and a repulsive ampere force is generated, wherein the ampere force is insufficient to drive the flexible FPC dielectric to deform, the thickness of a hollow layer is unchanged, and the resonance state of the unit structure is unchanged; under high power B, the magnitude of electromagnetic induction ampere force is enough to drive the flexible FPC dielectric material to deform, the equivalent thickness of the corresponding hollow layer is increased, the resonance state of the unit structure is changed, and the wave front which is designed in advance and meets the amplitude and phase is not provided;
referring to fig. 2, in the reconfigurable millimeter wave Airy beam forming device based on the super surface of the optical mechanical structure, the amplitude and the phase of the cross polarization reflected wave of the unit structure change with the rotation angle of the metal ELC resonant ring, the center working frequency point is 27.25GHz, wherein the regulation range of the rotation angle is [ -45 degrees, 45 degrees ], the rotation angle of the metal resonant ring influences the co-polarization and cross polarization component ratio of the reflected electromagnetic wave, the unit structure is simulated by using hfss electromagnetic simulation software, the unit structure is provided with a master-slave boundary condition, the Floquet port is excited, fig. 2 shows that the positive and negative directions of the rotation angle of the metal ELC resonant ring of the unit structure are different by 180 degrees, the magnitude of the rotation angle of the unit structure resonant ring influences the magnitude of the cross polarization reflected wave, the larger the magnitude of the corresponding cross polarization reflected wave is, and the characteristic that the normalized amplitude is adjustable between 0 and 1 creates conditions for generating Airy beams.
As can be seen from fig. 2, the amplitude of the cross polarized reflected wave is maximized at a rotation angle of about-45 ° and 45 °, and therefore, as can be seen from fig. 2, the control range of the rotation angle of the unit structure is [ -45 °,45 ° ].
Referring to fig. 3, according to the simulation result of an Airy beam of a predetermined design of the reconfigurable millimeter wave Airy beam forming device based on an optical mechanical super-surface, the propagation characteristics of the Airy beam are shown in fig. 3 (a), wherein it can be seen that the main lobe of the Airy beam has the characteristic of self-bending transmission, the amplitude and phase characteristics of the Airy beam at the initial position (z=0) are shown in fig. 3 (b), wherein it can be seen that the Airy beam has only two phases, the phase difference is 180 °, and the amplitude is similar to the envelope of the sine function.
Referring to fig. 4, the reconfigurable millimeter wave Airy beam forming device based on the optical mechanical structure type super surface of the present invention arranges sub-arrays, the transverse position of the predetermined designed Airy beam is [ -0.1m,0m ], 21 units are arranged according to the transverse period of the unit structure, the sub-arrays are designed and arranged in total, 21 points are sampled according to the amplitude and the phase of the Airy beam at the initial position (z=0) as the preset amplitude and phase information of the unit structure in the sub-arrays, the rotation angles of the unit structures at the corresponding positions in the range of [ -0.1m,0m ] are reversely calculated according to the relation of the amplitude, the phase and the rotation angles of the unit structures, namely, 7.5 degrees, -10 degrees, 14.5 degrees, 0.7 degrees, 16.5 degrees, 13.5 degrees, -3.1 degrees, -19.5 degrees, -19 degrees, -6 degrees, 12 degrees, 29 degrees, 45 degrees, 33 degrees, 22 degrees, 14 degrees, 8 degrees, 4.5 degrees, 2.2 degrees, 1.2 degrees and 0.9 degrees, 21 unit structures are sequentially arranged into subarrays, the top view of the subarrays is shown in fig. 4 (a), and the side view of the subarrays is shown in fig. 4 (b).
The transverse position of the Airy beam is [ -0.1m,0m ] and the range from the center position of the first cell structure to the center position of the last cell structure is set, and 21 cell structures can be arranged according to the transverse period of the cell structure being 5 mm.
As shown in fig. 4 (a), 21 cell structures in one sub-array share one metal back plate.
Referring to fig. 5, according to the simulation result of the subarray in hfss of the reconfigurable millimeter wave Airy beam forming device based on the optical machine structural type super surface, the subarray is transversely set as a master-slave boundary condition, is longitudinally set as a radiation boundary condition, plane wave incident excitation (power is A) is added, the polarization direction is along the y direction, fig. 5 (a) is the electric field intensity of the subarray simulation result, which shows that the main lobe of the cross polarized wave has obvious self-bending track, similar to a theoretical Airy beam, fig. 5 (b), fig. 5 (c) and fig. 5 (d) respectively compare the simulation result at the positions of 50mm, 100mm and 200mm with the electric field amplitude normalized by the theoretical result, so that the peak value of the main lobe can be obviously seen to move right and left along with the increase of the propagation distance, and the self-bending propagation characteristic of the Airy beam generated by the simulation result is verified.
The propagation formula of the approximate diffraction-free Airy beam generated by the reconfigurable millimeter wave Airy beam forming device of the optical machine structural type super surface is as follows:
Ψ(x)＝Ai(x)·exp(ax)
wherein x is 0 Represents the lateral dimension, s=x/x 0 For normalized lateral distance, z is propagation distance, ζ=z/kx 0 2 For normalized propagation distance, a.gtoreq.0 represents an exponential decay factor and Ai (x) represents an Airy function. The fourier transform of ψ (k) is ψ (x), and the a-attenuation factor causes an infinite energy Airy beam to be "truncated" into a finite energy Airy beam.
Referring to fig. 6, in the reconfigurable millimeter wave Airy beam forming device unit structure based on the optical mechanical structure type super surface of the present invention, under the corresponding condition of different intensity of incident waves excitation in the comsol software, the mechanical vibration structure generates different displacement amounts, and fig. 6 (a) shows that the mechanical vibration structure generates approximately 9×10 under the condition of applying 1W of incident electromagnetic wave excitation -3 The deformation of mm is basically ignored, the resonance state of the unit structure is unchanged, and fig. 6 (b) shows that the unit structure generates deformation close to 0.9mm under the condition of applying 100W incident electromagnetic wave excitation, compared with the initial 0.4mm hollow layer, the resonance state has changed, and the wave front generated by the unit structure also changes.
The calculation formula of electromagnetic induction ampere force generated by the metal ELC resonant ring and the metal reflection backboard is as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,for the induced electromotive force generated on the metal resonant ring, R represents the equivalent resistance of the metal resonant ring, L represents the equivalent inductance of the metal resonant ring, C represents the equivalent capacitance of the metal resonant ring, mu 0 For the magnetic permeability under vacuum, r represents the distance from the current element Idl to a certain point on the metal backboard, θ represents the included angle between the position vector of the current element Idl to the certain point on the metal backboard and the current element Idl, L represents the side length of the metal resonant ring, B represents the magnetic field generated by a current-carrying straight wire with the length L1 and the current size I on the metal backboard, F 1 Representing the ampere force between the metal resonant ring and the metal backplate.
The elastic force calculation formula that mechanical structure received is:
F 2 ＝k eff ×x＝m eff ·Ω eff 2 ×x
wherein F is 2 For the elastic force, k, of the mechanical vibrating structure eff Is equivalent to the elastic coefficient of a mechanical vibration structure, m eff Is the effective mass of the mechanical vibration structure, omega eff The effective mechanical vibration frequency of the mechanical vibration structure is given, and x is the deformation generated by the mechanical vibration structure.
Referring to fig. 7, according to the simulation result of the equivalent subarray of the reconfigurable millimeter wave Airy beam forming device based on the optical mechanical structure type super-surface under the condition of exciting an incident electromagnetic wave with certain intensity (the power is B), it can be seen that the wavefront generated by the subarray is no longer the wavefront of an Airy beam with a preset design at this time, and the cross polarization reflected wave meets the propagation track of the Airy beam with the preset design, which is equivalent to the "off" state of generating the Airy beam.
Referring to fig. 8, the reconfigurable millimeter wave Airy beam forming device array based on the optical mechanical super-surface is a complete top view, and is composed of 4 unit sub-arrays. The super-surface array can achieve "on" and "off" of approximately non-diffracting Airy beams by varying the intensity of the incident electromagnetic wave excitation (from power a to power B).
In practical application, the number of the arranged subarrays is not more than the number of units in the subarrays.
The above-mentioned embodiments of the present invention, the Airy beam forming dynamically controllable super surface technology uses the optical nonlinear effect of the unit structure to realize the two states of "on" and "off" of the Airy beam. It should be noted that: various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the principles of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. Reconfigurable Airy wave beam forming device based on optical machine structural type super surface, which is characterized by comprising a plurality of subarrays which are arranged periodically, wherein each subarray comprises a plurality of unit structures, and the unit structures are sequentially from top to bottom: a metal ELC resonant ring, a flexible FPC, and a metal reflective backplate; a metal ELC resonant ring is printed on the flexible FPC, a hollow layer is arranged between the flexible FPC and the metal reflection backboard, and the flexible FPC is fixed on an anchor point of the metal reflection backboard through a supporting arm;
taking the state that the transverse axis of the metal ELC resonant ring is perpendicular to the direction in which the length of the supporting arm is positioned as the initial position of the metal ELC resonant ring; taking the initial position as a reference, the clockwise rotation angle of the metal ELC resonance around the center of the metal ELC resonance is a negative angle, and the anticlockwise rotation angle of the metal ELC resonance around the center of the metal ELC resonance is a positive angle;
according to amplitude and phase information of a preset Airy wave beam at an initial position in space propagation, determining a rotation angle of a metal ELC resonant ring in each unit structure in the subarray relative to the initial position;
according to the relation between the wave front of the Airy wave beam with a preset design and the cross polarization reflection wave amplitude phase and the rotation angle of the unit structure, the array information of the unit structure is reversely calculated to construct a subarray, under the excitation of a certain incident wave, the unit structure in the subarray is not enough to deform under the driving of electromagnetic induction ampere force, the Airy wave beam with the preset design can be generated, under the excitation of the incident wave with another intensity, the unit structure in the subarray generates larger electromagnetic induction ampere force, the electromagnetic induction ampere force drives the mechanical vibration structure to deform, the resonance state of the unit structure is changed, the subarray does not meet the amplitude and the phase of the preset design for generating the Airy wave beam, so that the Airy wave beam is not generated any more, and finally the on and off states generated by the Airy wave beam are realized.
2. The reconfigurable Airy beamforming device based on optical mechanical super-surface according to claim 1, wherein the rotation angle range of each metal ELC resonant ring in the sub-array is [ -45 °,45 ° ].
3. The reconfigurable Airy beamforming device based on an optomechanical super-surface of claim 2, wherein the super-surface comprises two modes, on and off.
4. A reconfigurable Airy beamforming device based on an optomechanical super-surface according to claim 3, wherein the "on" mode of the super-surface is specifically: the power of the plane wave incident excitation satisfies the following conditions: after incidence, the ampere force generated by the unit structure in the subarray is smaller than the critical force generated by deformation of the unit structure, and then the super surface generates an Airy wave beam with preset design under the incidence excitation of the plane wave.
5. A reconfigurable Airy beamforming device based on an optomechanical super-surface according to claim 3, wherein the "off" mode of the super-surface is specifically: the power of the plane wave incident excitation satisfies the following conditions: after incidence, the ampere force generated by the unit structures in the subarray is greater than or equal to the critical force generated by deformation of the unit structures, so that the super surface does not generate Airy wave beams with preset designs under the incidence excitation of the plane wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340791.7A CN114583463B (en) | 2022-04-02 | 2022-04-02 | Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340791.7A CN114583463B (en) | 2022-04-02 | 2022-04-02 | Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114583463A CN114583463A (en) | 2022-06-03 |
| CN114583463B true CN114583463B (en) | 2023-09-26 |
Family
ID=81777943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210340791.7A Active CN114583463B (en) | 2022-04-02 | 2022-04-02 | Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114583463B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017040830A1 (en) * | 2015-09-04 | 2017-03-09 | Elwha Llc | Tunable metamaterial systems and methods |
| CN107611620A (en) * | 2016-07-11 | 2018-01-19 | 凯萨系统股份有限公司 | electromagnetic signal focusing structure |
| CN108539427A (en) * | 2018-06-16 | 2018-09-14 | 中国人民解放军空军工程大学 | The super surface Ai Li Beam generators and design method regulated and controled simultaneously based on amplitude and phase |
| CN109524770A (en) * | 2018-11-27 | 2019-03-26 | 电子科技大学 | A kind of microwave approximate diffraction-free beam transmission device surpassing surface based on Pancharatnam-Berry |
| CN111834753A (en) * | 2020-08-06 | 2020-10-27 | 中国人民解放军空军工程大学 | Fully-polarized super-surface carpet stealth coat and design method thereof |
| CN113410649A (en) * | 2021-06-18 | 2021-09-17 | 电子科技大学 | Optical-mechanical structural reflection type beam-controllable microwave super surface |
| CN113644428A (en) * | 2021-08-04 | 2021-11-12 | 北京理工大学 | Transmission type broadband medium-based super-surface antenna capable of digitally coding and array |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11885979B2 (en) * | 2020-01-03 | 2024-01-30 | University Of Maryland, College Park | Low-loss metasurface optics for deep UV |
-
2022
- 2022-04-02 CN CN202210340791.7A patent/CN114583463B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017040830A1 (en) * | 2015-09-04 | 2017-03-09 | Elwha Llc | Tunable metamaterial systems and methods |
| CN107611620A (en) * | 2016-07-11 | 2018-01-19 | 凯萨系统股份有限公司 | electromagnetic signal focusing structure |
| CN108539427A (en) * | 2018-06-16 | 2018-09-14 | 中国人民解放军空军工程大学 | The super surface Ai Li Beam generators and design method regulated and controled simultaneously based on amplitude and phase |
| CN109524770A (en) * | 2018-11-27 | 2019-03-26 | 电子科技大学 | A kind of microwave approximate diffraction-free beam transmission device surpassing surface based on Pancharatnam-Berry |
| CN111834753A (en) * | 2020-08-06 | 2020-10-27 | 中国人民解放军空军工程大学 | Fully-polarized super-surface carpet stealth coat and design method thereof |
| CN113410649A (en) * | 2021-06-18 | 2021-09-17 | 电子科技大学 | Optical-mechanical structural reflection type beam-controllable microwave super surface |
| CN113644428A (en) * | 2021-08-04 | 2021-11-12 | 北京理工大学 | Transmission type broadband medium-based super-surface antenna capable of digitally coding and array |
Non-Patent Citations (4)
| Title |
|---|
| Experimental Demonstration of Microwave Airy Beam Generation Based on Metasurface;Yongjun Huang et al.;《8th Asia-Pacific Conference on Antennas and Propagation (APCAP 2019)》;全文 * |
| Reconfigurable Metasurface for Airy Beam Generation;Rui Feng et al.;《2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting》;全文 * |
| 基于Ｐａ ｎ ｃ ｈ ａ ｒａｔ ｎ ａｍ － Ｂ ｅ ｒ ｒｙ 相位的贝塞尔波束产生调控方法研究;梁航等;《2019年全国天线年会论文集（上册）》;全文 * |
| 基于超表面的微波波段Airy 波束激发研究;杨海棠;《万方学位论文》;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114583463A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10211532B2 (en) | Liquid-crystal reconfigurable multi-beam phased array | |
| CN113410649B (en) | Optical-mechanical structural reflection type beam-controllable microwave super surface | |
| CN108365344B (en) | Active super-surface-based function reconfigurable polarization converter | |
| US11204528B2 (en) | Metamaterial structure unit, metamaterial and electronic device | |
| CN110635206B (en) | Mode-controllable vector vortex light beam generation device and method | |
| CN107591625B (en) | Broadband planar reflective array unit for reconfigurable planar reflective array | |
| CN110829034A (en) | Reconfigurable metamaterial basic unit and metamaterial surface | |
| CN107181066A (en) | A kind of double wideband polarization converters based on the super surface of anisotropy | |
| CN110797669B (en) | Liquid crystal electric control scanning gap waveguide one-dimensional holographic antenna based on amplitude weighting | |
| CN111900544B (en) | Scattering directional diagram reconfigurable array antenna based on liquid metal | |
| CN112886261A (en) | Adjustable multi-angle terahertz wave beam splitter and method thereof | |
| CN114583463B (en) | Reconfigurable Airy beam forming device based on optical-mechanical structure type super surface | |
| Fakheri et al. | Spatiotemporal binary acoustic metasurfaces | |
| CN114267950B (en) | Terahertz graphene holographic impedance surface antenna and communication system | |
| CN111403910B (en) | Terahertz reflection type two-dimensional scanning array antenna | |
| GB2520920A (en) | Beam scanning antenna | |
| CN114744408A (en) | Optical machine structural type millimeter wave reflected beam controllable super surface | |
| CN112909454A (en) | Method for modulating microwave and millimeter wave by liquid crystal and reconfigurable array antenna thereof | |
| CN114122647A (en) | Liquid crystal phase-shifting unit, reflective full-electrically-controlled phase shifter and antenna | |
| CN111367096B (en) | Terahertz amplitude modulator based on flexible metamaterial | |
| CN114865331A (en) | Polarized domain and space domain nonreciprocal super-surface device and control method | |
| CN111880350B (en) | Modulation method for electric control beam deflection based on barium titanate crystal | |
| CN114284745A (en) | Optical mechanical structure type frequency selective surface | |
| CN117895238A (en) | Millimeter wave-terahertz wave dynamic reflection antenna array based on liquid crystal-super surface | |
| WO2023187322A1 (en) | Multi-function micro-actuated metasurface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |