CN110071371B - One-bit liquid crystal-based digital super-surface and resonance control method thereof - Google Patents
One-bit liquid crystal-based digital super-surface and resonance control method thereof Download PDFInfo
- Publication number
- CN110071371B CN110071371B CN201910409576.6A CN201910409576A CN110071371B CN 110071371 B CN110071371 B CN 110071371B CN 201910409576 A CN201910409576 A CN 201910409576A CN 110071371 B CN110071371 B CN 110071371B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- digital
- metal block
- super
- layer
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000033228 biological regulation Effects 0.000 claims abstract description 10
- 238000001259 photo etching Methods 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 9
- 238000004088 simulation Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 108091026890 Coding region Proteins 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 102400000011 Cytochrome b-c1 complex subunit 9 Human genes 0.000 description 1
- 101800000778 Cytochrome b-c1 complex subunit 9 Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Liquid Crystal (AREA)
Abstract
The invention discloses a digital super surface based on liquid crystal and a resonance control method thereof, wherein the super surface sequentially comprises an upper glass medium substrate, a liquid crystal reflection type artificial electromagnetic super surface, a first liquid crystal molecule orientation layer, a liquid crystal material layer, a second liquid crystal molecule orientation layer, a negative electrode ground metal block layer and a lower glass medium substrate from top to bottom, one end of the upper glass medium substrate extends outwards, the lower surface of the extending part is also provided with a positive electrode direct current bias electrode pin metal block, the other ends of the negative electrode ground metal block layer and the lower glass medium substrate opposite to the positive electrode direct current bias electrode pin metal block extend outwards, and the relative dielectric constant change of the liquid crystal material layer is changed by controlling the bias voltage between the positive electrode direct current bias electrode pin metal block and the negative electrode ground metal block layer so as to realize different wave beam regulation and control functions. The invention has low structure cost, small loss, light weight, corrosion resistance, simple design and wide application prospect in radar, holographic imaging and other aspects.
Description
Technical Field
The invention belongs to the field of novel artificial electromagnetic materials, and relates to a one-bit liquid crystal-based digital super-surface and a resonance control method thereof.
Background
The metamaterial is formed by a series of periodic sub-wavelength structural arrangement, and can realize electromagnetic wave control characteristics which cannot be realized by many natural materials, such as perfect wave absorption, electromagnetic stealth, negative refraction, changing optics and the like. In the past decades, the metamaterial mainly has a three-dimensional structure, and the metamaterial has the advantages of high structure loss, high cost, high manufacturing difficulty, difficult integration, high section and limited practical application in millimeter wave, terahertz and even higher frequency bands. In recent years, a novel ultra-thin metamaterial, namely a super surface, is proposed, and various defects of the three-dimensional metamaterial are overcome.
Unlike the equivalent medium metamaterial theory in the past, the digital subsurface represents the phase or amplitude in a discretized manner by the concept of bits, and the theory and 2014 are proposed. Through the thought of similar digital signals, the traditional analog continuous phase is subjected to discretization bit representation, such as one-bit digital coding, in 0-2 pi, each discrete phase unit scale is 2 pi/2N, N is the bit number, namely, digital subunits 0 and 1 can represent 0 and pi, the discretization phase is used for digitally coding the super surface, the regulation and control of states of electromagnetic wave scattering, deflection, polarization and the like are realized, and of course, the higher the bit number is, the higher the realized precision is. The phase or amplitude is encoded and regulated by the active device, so that the effect of simplifying and controlling electromagnetic waves is achieved.
One common adjustable method is a semiconductor device such as a diode, however, parasitic capacitance and inductance naturally exist, which gradually change with the increase of frequency, so that insertion loss is increased, and meanwhile, the reliability of circuit simulation design is interfered, and the integration and control are not easy; another commonly used tunable mems is costly and has a long response time. Therefore, the digital super-surface can be controlled by adopting the liquid crystal phase change material, so that the problems can be solved, the cost is greatly reduced, and one-bit digital super-surface control can be realized by only a small amount of liquid crystal. Compared with the existing regulation and control method, the liquid crystal regulation and control method provides an innovative method for regulating and controlling electromagnetic waves.
Disclosure of Invention
The invention aims to: the invention provides a one-bit liquid crystal regulated digital super surface with simple design, low cost, low loss, millimeter wave and low profile and a resonance control method thereof.
The technical scheme is as follows: in order to achieve the above purpose, the present invention adopts the following technical scheme:
one bit is based on liquid crystal digital super surface, from top to bottom include upper glass medium base plate, liquid crystal reflection type artificial electromagnetic super surface, first liquid crystal molecule orientation layer, liquid crystal material layer, second liquid crystal molecule orientation layer, negative pole ground metal block layer and lower floor's glass medium base plate in proper order, upper glass medium base plate one end outwards extends, and extension department lower surface still is provided with positive pole direct current bias electrode pin metal block, negative pole ground metal block layer and lower floor's glass medium base plate outwards extend with the opposite other end of positive pole direct current bias electrode pin metal block, change the relative dielectric constant change of liquid crystal material layer through the size of bias voltage between control positive pole direct current bias electrode pin metal block and the negative pole ground metal block layer, in order to realize different wave beam regulation and control functions.
Optionally, the liquid crystal reflection type artificial electromagnetic super surface comprises m×m digital subunits arranged in an array, each digital subunit is composed of n×n super digital subunits arranged in an array, the super digital subunits in the same row are connected in series through wires, and the digital subunits in odd or even rows are connected to the positive electrode direct current bias electrode pin metal block.
Optionally, the first liquid crystal molecule alignment layer includes liquid crystal molecule alignment units arranged in an array corresponding to the digital subunits.
Alternatively, the first and second liquid crystal molecule alignment layers anchor the liquid crystal material molecules in an initial direction.
Optionally, the positive electrode direct current bias electrode pin metal block, the negative electrode ground metal block, the digital subunit and the digital subunit serial wires are all etched on the upper glass medium substrate material and the lower glass medium substrate material by adopting photoetching.
Alternatively, the super digital subunits are square.
The invention also provides a one-bit liquid crystal digital super-surface-based resonance control method, wherein in the working frequency band, the relative dielectric constant of a liquid crystal material layer is controlled by controlling the bias voltage between a positive electrode direct current bias electrode pin metal block and a negative electrode ground metal block layer, and the super digital subunit presents two different states with a reflection phase difference of about 180 degrees.
Further, the two states of the super digital subunit are characterized by different numbers, the initial state is represented by the number "0", and the state 180 ° different from the initial state is represented by the number "1".
Furthermore, the whole row control is carried out on the odd-row or even-row digital subunits, so that the liquid crystal reflection type artificial electromagnetic super surface presents different coding sequences, and different beam regulation and control functions are dynamically realized.
Furthermore, the liquid crystal molecule orientation layer anchors the initial direction for the liquid crystal material layer, and further anchors the initial digital state for the super digital subunit.
The beneficial effects are that: compared with the prior art, the invention has the following advantages:
most of the existing electrically-controlled digital super-surface adopts a semiconductor device, the working frequency band is lower, and the semiconductor device usually works in a microwave frequency band, so that the application of the metamaterial equipment is very limited, and meanwhile, the influence caused by the reactance can be greatly amplified along with the increase of the frequency, such as the increase of loss, the increase of the frequency and the like due to the parasitic capacitance and inductance of the semiconductor device. These adverse factors can have a tremendous impact on the feasibility and practicality of digital subsurface design.
Compared with the existing electrically regulated digital super-surface, the liquid crystal regulated digital super-surface can work in millimeter wave and terahertz frequency bands, meanwhile, the design of a feed network is simplified, medium punching connection is not needed, wiring is simple, integration is easy, and loss is low.
The digital super surface of the one-bit liquid crystal has broadband characteristic, the digital subunit is loaded with liquid crystal materials up and down, the dielectric constant of the digital subunit can be continuously adjustable along with external bias voltage, and the phase difference of 0-360 degrees can be realized in a wider frequency band range, which is not realized by all electric adjustment at present, and meanwhile, the digital super surface capable of realizing one-bit dynamic adjustment based on liquid crystal is the first one.
The one-bit liquid crystal digital super-surface has the advantages of simple and convenient design, low processing cost, small size of the digital subunit, simple structure and good universality, can be designed at different working frequency points by changing the size of the digital subunit structure, and is easy to popularize and apply.
Drawings
FIG. 1 (a) is a schematic top view of the whole structure of a reflective digital subsurface of a one-bit liquid crystal according to an embodiment of the invention;
FIG. 1 (b) is a super digital subunit consisting of 3×3 digital subunits in an embodiment of the present invention;
FIG. 1 (c) is a schematic side view of the whole structure of a one-bit liquid crystal digital coding super-surface according to an embodiment of the present invention;
FIG. 2 (a) shows the phase of the liquid crystal phase material in the embodiment of the present inventionFor dielectric constant epsilon r,LC An actual test curve as a function of the dc bias voltage V;
FIG. 2 (b) is a simulation plot of reflected S parameter curve phase and amplitude versus frequency for the "0" state and "1" state of the super digital subunit of the inventive embodiment for liquid crystal materials at different bias voltages;
fig. 3 (a) is a simulation diagram of a 3-dimensional stereo far-field reflection beam pattern result obtained when a bit is based on a liquid crystal digital super surface at 32.5GHz and a digital coding sequence is "0000", and fig. 3 (b) is a simulation diagram of a 3-dimensional stereo far-field reflection beam pattern result obtained when a bit is based on a liquid crystal digital super surface at 32.5GHz and a digital coding sequence is "1010";
fig. 4 (a) is a schematic diagram of an experimental result of a polar coordinate pattern of a 2-dimensional plane reflection beam obtained when the bit liquid crystal digital super surface in the embodiment of the invention is at 32.5GHz and the bias voltage v=0v, and the code sequence is "0000", and fig. 4 (b) is a schematic diagram of an experimental result of a polar coordinate pattern of a 2-dimensional plane reflection beam obtained when the bit liquid crystal digital super surface in the embodiment of the invention is at 32.5GHz and the bias voltage v=8v, and the code sequence is "1010";
in the figure: the device comprises a positive electrode direct current bias electrode pin metal block 1, a lead 2 connected with a digital subunit, a negative electrode ground metal block 3, a digital subunit 4, a liquid crystal material layer 5, an upper glass medium substrate 6, a lower glass medium substrate 7, a liquid crystal molecule orientation layer 8 and a super digital subunit 9.
Detailed Description
The invention is further illustrated by the following examples and the accompanying drawings.
The invention designs and makes a one-bit liquid crystal digital super surface, and can realize various coding sequences by controlling the bias voltage through controlling an external direct current power switch. As shown in fig. 1 (a) to 1 (c), the one-bit liquid crystal digital coding super surface of the invention sequentially comprises an upper glass medium substrate, a liquid crystal reflection type artificial electromagnetic super surface, a first liquid crystal molecule orientation layer, a liquid crystal material layer, a second liquid crystal molecule orientation layer, a negative electrode ground metal block layer and a lower glass medium substrate from top to bottom, wherein one end of the upper glass medium substrate extends outwards, the lower surface of the extending part is also provided with a positive electrode direct current bias electrode pin metal block, the other ends of the negative electrode ground metal block layer and the lower glass medium substrate opposite to the positive electrode direct current bias electrode pin metal block extend outwards, and the relative dielectric constant change of the liquid crystal material layer is changed by controlling the bias voltage between the positive electrode direct current bias electrode pin metal block and the negative electrode ground metal block layer so as to realize different wave beam regulation functions.
The liquid crystal reflection type artificial electromagnetic super surface comprises m multiplied by m digital subunits arranged in an array, wherein m is the number of rows and columns of the digital subunits 4; each digital subunit is composed of n×n super digital subunits arranged in an array, where n is the number of columns and rows of super digital subunits in the digital subunits, each super digital subunit in the same row is connected in series through a wire, and the odd-numbered or even-numbered digital subunits are connected to the positive dc bias electrode pin metal block (as shown in fig. 1 (a), the first-row and third-row digital subunits are connected to the positive dc bias electrode pin metal block in the embodiment of the present invention). By varying the relative permittivity of the liquid crystal material by controlling the magnitude of the bias voltage, each super digital subunit code is controlled only by the liquid crystal region beneath it.
The positive electrode (positive electrode direct current bias electrode pin metal block) of the liquid crystal material is connected with the negative electrode ground metal block layer through a lead connected with the super digital subunit which needs to provide bias voltage, so as to form a direct current closed loop. In the working frequency band, the liquid crystal molecule orientation layer 8 is used for setting the preset direction of the liquid crystal molecule rotation direction, and the relative dielectric constant of the liquid crystal material layer is controlled by controlling the bias voltage between the positive electrode direct current bias electrode pin metal block and the negative electrode ground metal block layer, so that the super digital subunit presents two different states with the reflection phase difference of about 180 degrees. The two states of the super digital subunit are characterized by different numbers, the initial state is represented by the number "0", and the state 180 DEG different from the initial state is represented by the number "1". And carrying out whole-row control on the odd-row or even-row digital subunits to enable the liquid crystal reflection type artificial electromagnetic super-surface to present different coding sequences, thereby dynamically realizing different beam regulation and control functions. The liquid crystal molecule orientation layer anchors the initial direction for the liquid crystal material layer, and further anchors the initial direction for the super digital subunit.
In the invention, the model of the liquid crystal material is merck liquid crystal; the type of the glass medium substrate is BF33, and a supporting position is provided for metal; the conducting wire provides bias voltage for the liquid crystal; the material of the liquid crystal molecule orientation layer is polyimide nylon; the super digital subunit is square and made of metal copper.
In the present embodiment, the liquid crystal reflective artificial electromagnetic subsurface includes 4×4 digital subunits 4 as shown in fig. 1 (a), and each digital subunit 4 is composed of 3×3 sub-wavelength sized super digital subunits 9 as shown in fig. 1 (b). FIG. 2 (a) is a graph showing the variation of dielectric constant of liquid crystal material according to the present invention, and FIG. 2 (b) is a graph showing the reflection phase and the reflection phase of the super digital subunit of FIG. 1 (b) under the variation of dielectric constant of liquid crystal of FIG. 2 (a). By selecting the working frequency range at 32.5GHz, the phase difference is about 180 DEG, when the relative dielectric constant epsilon of the liquid crystal material r,LC When=2.4, the digital subunit 4 is in the "0" state, ε r,LC When=3.2, the digital subunit 4 is in the "1" state. To simplify the feeding, we connect the "1" state with the wire 2, i.e. the first and third rows of fig. 1 (a) are not powered to the "0" state and powered to the "1" state; the second and fourth lines do not need to be applied with voltage, the experimental engineering is always in a 0 state, two coding sequences 0000 and 1010 are formed at the moment to prove the feasibility of the liquid crystal control digital coding metamaterial, and in order to verify the one-bit liquid crystal digital super surface designed by the invention, simulation is carried out by numerical simulation CST software. FIG. 3 (a) shows the result of a 3-dimensional far-field beam pattern simulating a reflective liquid crystal digital subsurface "0000", with only one main beam, the direction pointing to the Z-axis; when the dielectric constant is changed to achieve the encoding as "1010" sequence, the simulation results are shown in fig. 3 (b), where the main beam is split uniformly into two 3-dimensional reflected beams of the same size. In experimental tests, the working frequency range 22-33GHz frequency range is adopted, and the standard reference gain is 20dBi as plane wave generator, uniformly irradiating on the digital reflection super surface of one-bit liquid crystal. The measurement result shows that the code sequence is "0000" when the bias dc voltage is 0V. The beam is directly reflected back without any change, as shown in fig. 4 (a), to simulate and test a two-dimensional polar coordinate reflected beam pattern; when the direct-current bias voltage is changed to 8V, the super subunit patch is 180 DEG different, the code sequence is 1010, and the test result is shown in fig. 4 (b), and the reflected wave has two main beams and appears at about + -22.5 deg. The reflection wave beam of the one-bit liquid crystal reflection type digital super surface is well matched with the simulation result represented by the solid line, and the feasibility and the correctness of the liquid crystal digital super surface technology are further verified.
In the invention, a liquid crystal material layer 5 is embedded in an upper glass medium substrate material and a lower glass medium substrate material, and the liquid crystal material is connected with a digital subunit 4 and a negative electrode ground metal block 3 in a digital reflection type artificial electromagnetic surface into a whole. Each liquid crystal region covers one digital subunit. The change of the relative dielectric constant of the liquid crystal material is regulated by controlling the magnitude of external direct-current voltage, one digital subunit covered by the liquid crystal area presents different reflection phases, and two states of which the phase difference of the digital subunit is about 180 degrees are selected and represented by the numbers 0 and 1, so that a one-bit digital coding super-surface is realized, and various control functions are realized on electromagnetic wave beams. The invention solves the defect of single existing digital super-surface control mode, and compared with the existing electric control method, the liquid crystal method improves the working frequency band, reduces the complexity of the system design, has the advantages of low cost, small loss, low profile, corrosion resistance, simple design and the like, and has great application prospects in the aspects of radar, wireless satellite communication, holographic imaging and the like.
Claims (9)
1. A one bit liquid crystal based digital subsurface, characterized by: the device comprises an upper glass medium substrate, a liquid crystal reflection type artificial electromagnetic super surface, a first liquid crystal molecule orientation layer, a liquid crystal material layer, a second liquid crystal molecule orientation layer, a negative electrode ground metal block layer and a lower glass medium substrate from top to bottom, wherein one end of the upper glass medium substrate extends outwards, the lower surface of the extending part is also provided with a positive electrode direct current bias electrode pin metal block, the other ends of the negative electrode ground metal block layer and the lower glass medium substrate, which are opposite to the positive electrode direct current bias electrode pin metal block, extend outwards, and the relative dielectric constant change of the liquid crystal material layer is changed by controlling the bias voltage between the positive electrode direct current bias electrode pin metal block and the negative electrode ground metal block layer so as to realize different beam regulation functions;
the liquid crystal reflection type artificial electromagnetic super surface comprises m multiplied by m digital subunits arranged in an array, each digital subunit is composed of n multiplied by n super digital subunits arranged in an array, the super digital subunits in the same row are connected in series through a lead, and the digital subunits in odd or even rows are connected to a positive electrode direct current bias electrode pin metal block.
2. A one-bit liquid crystal-based digital subsurface according to claim 1, wherein: the first liquid crystal molecule orientation layer comprises liquid crystal molecule orientation units which are arranged in an array and correspond to the digital subunits.
3. A one-bit liquid crystal-based digital subsurface according to claim 1, wherein: the first liquid crystal molecule alignment layer and the second liquid crystal molecule alignment layer anchor the initial direction of the liquid crystal material molecules.
4. A one-bit liquid crystal-based digital subsurface according to claim 1, wherein: the positive electrode direct current bias electrode pin metal block, the negative electrode ground metal block, the digital subunit and the digital subunit serial wires are all etched on the upper glass medium substrate material and the lower glass medium material by adopting photoetching.
5. A one-bit liquid crystal-based digital subsurface according to claim 1, wherein: the super digital subunits are all square.
6. A one-bit liquid crystal digital subsurface-based resonance control method as claimed in any one of claims 1-5, characterized by: in the working frequency band, the relative dielectric constant of the liquid crystal material layer is controlled by controlling the bias voltage between the pin metal block of the positive DC bias electrode and the negative ground metal block layer, and the super digital subunit presents a reflection phase difference of 180 ° Is a different state of the memory.
7. The one-bit liquid crystal digital subsurface resonance control method as claimed in claim 6, wherein the two states of the super digital subunit are characterized by different numbers, the initial state is represented by the number "0", and the difference from the initial state is 180% ° The status is indicated by the numeral "1".
8. The one-bit liquid crystal digital super surface based resonance control method as claimed in claim 6, wherein the whole row control is performed on the odd-row or even-row digital subunits, so that the liquid crystal reflection type artificial electromagnetic super surface presents different coding sequences, and different beam regulation and control functions are dynamically realized.
9. The one-bit digital-super-surface-based resonance control method as claimed in claim 6, wherein the liquid crystal molecular alignment layer anchors the initial direction for the liquid crystal material layer, thereby anchoring the initial digital state for the super digital subunit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409576.6A CN110071371B (en) | 2019-05-16 | 2019-05-16 | One-bit liquid crystal-based digital super-surface and resonance control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409576.6A CN110071371B (en) | 2019-05-16 | 2019-05-16 | One-bit liquid crystal-based digital super-surface and resonance control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110071371A CN110071371A (en) | 2019-07-30 |
| CN110071371B true CN110071371B (en) | 2024-04-05 |
Family
ID=67370897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910409576.6A Active CN110071371B (en) | 2019-05-16 | 2019-05-16 | One-bit liquid crystal-based digital super-surface and resonance control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110071371B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273475B (en) * | 2020-03-27 | 2021-05-28 | Tcl华星光电技术有限公司 | Display device, display panel and manufacturing method thereof |
| CN111585028B (en) * | 2020-05-26 | 2023-09-19 | 华南理工大学 | Digital coding holographic antenna and regulation and control method thereof |
| CN111769366B (en) * | 2020-06-23 | 2021-08-10 | 东南大学 | High-sensitivity millimeter wave super-surface sensor based on liquid crystal dual-mechanism |
| CN112952392B (en) * | 2021-01-26 | 2022-12-20 | 东南大学 | Terahertz digital programmable super surface for liquid crystal regulation and control |
| CN118044066A (en) * | 2021-10-15 | 2024-05-14 | 北京小米移动软件有限公司 | Array antenna and communication equipment |
| CN114171927A (en) * | 2021-12-09 | 2022-03-11 | 东南大学 | Intelligent electromagnetic super surface controlled by voice recognition |
| CN115202088B (en) * | 2022-05-17 | 2024-03-19 | 北京航空航天大学杭州创新研究院 | Phase-tunable spin terahertz source device and preparation method and application thereof |
| WO2024036455A1 (en) * | 2022-08-15 | 2024-02-22 | 北京小米移动软件有限公司 | Metasurface implementation method and apparatus based on liquid crystal regulation and control, and metasurface unit |
| WO2024082311A1 (en) * | 2022-10-21 | 2024-04-25 | 北京小米移动软件有限公司 | Metasurface unit and metasurface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005244458A (en) * | 2004-02-25 | 2005-09-08 | Nippon Hoso Kyokai <Nhk> | Lens antenna |
| CN107331972A (en) * | 2017-06-30 | 2017-11-07 | 西安电子科技大学 | Artificial super surface electromagnetic wave amplitude modulator based on graphene |
| CN107453013A (en) * | 2017-09-04 | 2017-12-08 | 电子科技大学 | A kind of phase shifter based on liquid crystal material |
| CN109326888A (en) * | 2018-09-29 | 2019-02-12 | 东南大学 | A kind of light-operated digital super surface of a bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10720712B2 (en) * | 2016-09-22 | 2020-07-21 | Huawei Technologies Co., Ltd. | Liquid-crystal tunable metasurface for beam steering antennas |
-
2019
- 2019-05-16 CN CN201910409576.6A patent/CN110071371B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005244458A (en) * | 2004-02-25 | 2005-09-08 | Nippon Hoso Kyokai <Nhk> | Lens antenna |
| CN107331972A (en) * | 2017-06-30 | 2017-11-07 | 西安电子科技大学 | Artificial super surface electromagnetic wave amplitude modulator based on graphene |
| CN107453013A (en) * | 2017-09-04 | 2017-12-08 | 电子科技大学 | A kind of phase shifter based on liquid crystal material |
| CN109326888A (en) * | 2018-09-29 | 2019-02-12 | 东南大学 | A kind of light-operated digital super surface of a bit |
Non-Patent Citations (1)
| Title |
|---|
| 电磁编码超材料的理论与应用;张磊等;中国光学(第1期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110071371A (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110071371B (en) | One-bit liquid crystal-based digital super-surface and resonance control method thereof | |
| CN209766650U (en) | one-bit liquid crystal-based digital super surface | |
| CN111769359B (en) | Digital coding-based liquid crystal THz super-surface antenna and beam reconstruction method thereof | |
| Yang et al. | A 1600-element dual-frequency electronically reconfigurable reflectarray at X/Ku-band | |
| EP3017504B1 (en) | Electronically steerable, artificial impedance, surface antenna | |
| CN103474775B (en) | Phased array antenna based on dynamic regulation and control artificial electromagnetic structure material | |
| EP2266166B1 (en) | Steerable microwave antenna | |
| CN106154603B (en) | Liquid crystal phase-shifting unit and phase-controlled antenna formed by same | |
| JP2018201209A (en) | Surface scattering antenna improvements | |
| CN101682115B (en) | Omnidirectional volumetric antenna | |
| CN109326888A (en) | A kind of light-operated digital super surface of a bit | |
| US9466887B2 (en) | Low cost, 2D, electronically-steerable, artificial-impedance-surface antenna | |
| CN101378147A (en) | I-shaped electric-controlled beam scanning antenna housing constructed by microwave diode | |
| CN112290222B (en) | Programmable anisotropic coded super surface | |
| CN105244570B (en) | Active frequencies select the design method on surface | |
| CN108767445B (en) | Reconfigurable multifunctional antenna based on distributed direct drive array | |
| CN209016270U (en) | The light-operated digital super surface of one bit | |
| JP2008035424A (en) | Array antenna | |
| CN113991311B (en) | Time-coded super surface for generating arbitrary polarization | |
| CN114911084B (en) | Terahertz liquid crystal circularly polarized wave beam scanning device | |
| CN108718003A (en) | A kind of active biased device and method of programmable digital Meta Materials | |
| CN107591625A (en) | A kind of broadband planar for restructural plane reflection battle array reflects array element | |
| US6774745B2 (en) | Activation layer controlled variable impedance transmission line | |
| CN112886261A (en) | Adjustable multi-angle terahertz wave beam splitter and method thereof | |
| CN205944440U (en) | Metamaterial |
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 |