CN109067445A - A kind of super surface of time domain coding for wireless communication - Google Patents
A kind of super surface of time domain coding for wireless communication Download PDFInfo
- Publication number
- CN109067445A CN109067445A CN201811128129.5A CN201811128129A CN109067445A CN 109067445 A CN109067445 A CN 109067445A CN 201811128129 A CN201811128129 A CN 201811128129A CN 109067445 A CN109067445 A CN 109067445A
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- Prior art keywords
- time domain
- domain coding
- wireless communication
- super surface
- phase
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
Abstract
The invention discloses a kind of super surfaces of the time domain coding for wireless communication, comprising: n basic unit, n basic unit periodic arrangement, every column unit form submatrix, provide control signal by control circuit.The principle of the invention is simple, low in cost, has very high engineering application value.
Description
Technical field
It is especially a kind of for wireless communication the present invention relates to wireless communication and Novel manual electromagnetic material technical field
The super surface of time domain coding.
Background technique
Electromagnetic wave is when being incident on the resistance electromagnetic surface with phase gradient distribution, and reflection that exception will occur can be thus in Asia
Regulate and control scattering direction, polarization direction and the wavefront shape of electromagnetic wave in wavelength dimension.By introduce can conditioning technology, can design
It is capable of the adjustable super surface of real-time control electromagnetic wave out.Traditional adjustable super surface due to needing the distribution of continuous phase gradient,
Therefore feeding network is extremely complex, and encodes super surface and be made of limited super surface cell, can less influence it is original
Feeding network design difficulty is greatly simplified on the basis of super surface property.The control signal on the super surface of traditional code is all static
, or changed with low-down frequency, therefore be still analogous to traditional reconfigurable aerial array.
Summary of the invention
Technical problem to be solved by the present invention lies in, a kind of super surface of the time domain coding for wireless communication is provided, it is former
Manage it is simple, low in cost, have very high engineering application value.
In order to solve the above technical problems, the present invention provides a kind of super surface of the time domain coding for wireless communication, comprising: n
A basic unit, n basic unit periodic arrangement, every column unit form submatrix, provide control signal by control circuit.
Preferably, basic unit includes medium substrate, metal patch, varactor, metal backing, feeding network and gold
Belong to feed through-hole；Metal patch and varactor are covered on medium substrate upper surface, and metal backing and feeding network are covered on
Medium substrate lower surface, metal feed the upper and lower surface that through-hole runs through medium substrate.
Preferably, control circuit a specifically: baseband signal processor based on FPGA, a 16 digit mode converters
The voltage amplifier circuit being made of with one operational amplifier；Wherein the baseband signal processor based on FPGA generates base-band digital
Signal is simultaneously passed along 16 digit mode converters；It is defeated that received baseband digital signal is then converted to simulation by 16 digit mode converters
Voltage out, in the range of ± 1V；Voltage amplifier circuit is amplified after receiving the analog voltage that 16 digit mode converters export,
Amplification coefficient is 12, therefore analog output voltage range is up to ± 12V, absolute value range 24V.The simulation of control circuit output
Voltage is loaded into varactor by feeding network, can change the electrical parameter of varactor in real time, and then control the super table of time domain coding
The reflection coefficient phase in face.Entire control circuit is by baseband signal processor, digital analog converter, voltage amplifier by base band number
Word signal is converted to analog voltage, after being loaded into the varactor in basic unit, realizes the control super surface of time domain coding
The purpose of reflection coefficient phase is to set up one-to-one relationship between baseband digital signal and reflection coefficient phase
The selection of baseband signal constellation point lays the foundation.
Preferably, control signal is baseband digital signal by corresponding analog control voltage made of conversion, passes through feedback
Electric network is loaded on the varactor in basic unit, changes its electrical parameter, and then control the anti-of the super surface of time domain coding
Coefficient phase is penetrated, after the irradiation of single-tone carrier wave, the phase of back wave can surpass surface reflection coefficient according to time domain coding
Phase changes, and the phase and baseband digital signal of carrier wave just establish one-to-one relationship.It realizes base band number
Purpose in word signal modulation to carrier frequency, and the RF circuit module using legacy communications system is not needed during this, such as
Frequency mixer, filter etc. enormously simplify the framework of legacy communications system.
The invention has the benefit that (1) principle of the invention is simple, it is only necessary to change the frequency of control signal, control electricity
The amplitude of pressure, so that it may realize the real-time monitoring to reflection wave phase；(2) present invention forms battle array using by multiple basic units
Column, are controlled by same signal, can be reduced since boundary difference is to interference caused by unit reflection coefficient, while decreasing feedback
Electric Network Design complexity；(3) compared with legacy communications system, the present invention only passes through the control signal of high speed dynamic change
Base-band data signal is modulated in carrier frequency, wireless communication function is realized.The present invention is not needed using traditional communication system
Uppermixing, filtering and amplification circuits in transmitter architecture of uniting, enormously simplify transmitter architecture, can be used for constructing
New System communication system, and the design cycle can be shortened, design difficulty is reduced, manufacturing cost is reduced.
Detailed description of the invention
Fig. 1 (a) is basic cell structure schematic diagram of the invention.
Fig. 1 (b) is basic unit reflectance magnitude of the invention with control voltage change simulation result schematic diagram.
Fig. 2 (a) is that the present invention amplitude of super surface reflection coefficient and phase test result under different control voltages are illustrated
Figure.
Fig. 2 (b) is the amplitude and phase of super surface reflection coefficient under different control voltages in inphase/orthogonal plane of the present invention
Test result schematic diagram.
Fig. 3 is the wireless communication system block diagram on the super surface of time domain coding proposed by the invention.
Fig. 4 is the present invention receiving under receive and dispatch both ends different distance and in the case that transmitting terminal transmission rate is different and terminate
The baseband signal constellation diagram received.
Fig. 5 is experiment scene figure of the present invention for the super surface of time domain coding of wireless communication.
Specific embodiment
As shown in Figure 1, a kind of super surface of time domain coding for wireless communication, comprising: n basic unit, n substantially single
First periodic arrangement, every column unit form submatrix, provide control signal by control circuit.
The super surface of time domain coding for wireless communication proposed by the invention is made of same basic unit, and is passed through
Multiple basic units are formed array by feeding network, realize the real-time monitoring to reflection wave phase, the super table by control signal
Noodles are like the restructural reflective array structure of plane.
The principle of the invention is to make basic unit reflection coefficient in the form of given pace in different value using control signal
Between switch at high speed, then mapping relations by establishing control signal and base-band data signal, so that when the incidence of single-tone carrier wave is super
When surface, base-band data signal can be directly modulated to carrier frequency, realize wireless communication.It controls signal and changes reflection coefficient
Form can be amplitude, be also possible to phase, in addition different speed controls, may be implemented to reflection wave amplitude, frequency, phase
The modulation of position.
The basic unit of experimental design of the present invention, under different control voltage, the phase of reflection coefficient also can be different,
And show the relationship mapped one by one.According to the principle that quadrature phase shift keying in communication system (QPSK) is modulated, every 2 binary systems
Number can be mapped as a QPSK symbol, and in a symbol period, which corresponds to carrier wave when being modulated onto carrier wave
A certain phase.The glossary of symbols of QPSK shares 4 symbol (S0~S3), amplitude is equal each other, phase is respectively 135 °, 225 °,
315 °, 45 ° respectively correspond binary number 00,01,11,10.In inphase/orthogonal plane, this 4 QPSK symbols occupy respectively
It is equal that (amplitude of symbol is represented) at a distance from one quadrant, with center origin, the angle with lineups (horizontal axis) positive direction
The phase of symbol is represented, such representation method, which is called, does planisphere.For example, if you need to transmit a byte data 00100111,
Need 4 QPSK symbol S0S3S1S2It can end of transmission by 4 symbol periods.It is analogous to this modulation system, institute of the present invention
The phase of back wave and baseband digital signal can be set up one-to-one relationship by the following method by the super surface of design:
Firstly, reflection coefficient phase difference meets the basic unit state of QPSK symbol requirement and records its corresponding control each other for selection 4
Signal voltage processed；Secondly, 4 selected basic unit states are mapped with 2 bits.Finally, by by base
Band digital signal is mapped as controlling contact potential series accordingly, then irradiates the super surface of time domain coding by single-tone carrier wave, that is, is able to achieve
By on modulates baseband signals to carrier wave and apply to wireless communication in.
Shown in basic cell structure of the present invention such as Fig. 1 (a), by medium substrate, it is covered on the metal of medium substrate upper surface
The metal backing of patch and varactor, lower surface feeds sets of vias with feeding network and through the metal of upper and lower surface
At.Fig. 1 (a) is unit three-dimensional figure.Metal backing can prevent Electromgnetically-transparent.Control signal by the feeding network at the back side and
Metal throuth hole is loaded onto varactor both ends.By optimizing the period of basic unit, the size and dielectric thickness of patch, make
It obtains basic unit to meet low loss characteristic in assigned frequency band, in amplitude and there is big phase change range, as a result such as Fig. 1
(b) shown in: Fig. 1 (b) top half is unit reflection amplitudes with control voltage change simulation result diagram；The lower half portion Fig. 1 (b) is
Unit reflected phase is with control voltage change simulation result diagram.At 4GHz, reflection amplitudes are 0.75 or more, phase change on reflection
Range is at 280 ° or more.
In the present invention, basic unit reflection coefficient needs to change by control voltage, 4 phases needed for choosing communication
Before the state of position, control voltage V and reflected phase are carried outBetween mapping relations measurement.As incidence wave f0=4GHz is just
When being incident to the super surface of time domain coding, the amplitudes and phase test result such as Fig. 2 of super surface reflection coefficient under difference control voltages
(a) shown in, 4 phase states are selected for convenience, by initial phase shift being added and by measurement of reflection-factor result in same phase/just
It hands over and shows in plane, as a result as shown in Fig. 2 (b).As can be seen that process of the control voltage from 0V to 21V from Fig. 2 (a)
In, the reflection amplitudes of super surface basic unit have about 0.44 fluctuation, and phase has more than 255 ° of variation, kiss with theoretical simulation
It closes.By being converted into Fig. 2's (b) as a result, therefrom choosing 4 states as QPSK symbol, it can be seen that 4 symbols divide in figure
Voltage 0V, 3.6V, 6.4V, 17.4V Dui Ying not be controlled, the binary number of mapping is respectively 00,01,11,10, from experimental result
In the corresponding reflectance magnitude phase of 4 symbols that extracts be respectively as follows: 1e-j(-1.23π)、0.66e-j(-0.84π)、0.64e-j(-0.16π)、0.89e-j(0.18π)。
After establishing the mapping relations for completing baseband digital signal and the super granule surface contral signal of time domain coding, it is necessary to practical
Establish communication system verifying inventive energy.Wireless communication system block diagram based on the super surface of time domain coding proposed by the invention
As shown in figure 3, wherein transmitting terminal by time domain coding surpass surface, baseband signal processing module, control circuit module, radio-frequency carrier send out
Raw module and active antenna composition, receiving end is then made of receiving antenna and conventional superheterodyne receiver.In transmitting terminal, pass through
Baseband signal processing module generates known random bit stream information, and it is transferred to control circuit module with given pace and is produced
Raw corresponding control contact potential series；Meanwhile the carrier signal that module generates 4GHz occurs for radio-frequency carrier, is irradiated by active antenna
The super surface of time domain coding.In receiving end, the back wave on the super surface of time domain coding is received by receiving antenna, it is demodulated, it obtains
Corresponding binary bit stream.Fig. 4 show the situation that in the case where receiving and dispatching both ends different distance and transmitting terminal transmission rate is different
The baseband signal constellation diagram that lower receiving end receives, wherein every a line (a-c), (d-f), (g-i) they are identical traffic rate, it is different
Test result under transmission range；Each column (a-g), (b-h), (c-i) are identical traffic distance, the survey under different transmission rates
Test result.It can be seen that (EVM shows as the close of constellation point to planisphere error vector magnitude with the increase of communication distance
Collection degree, more intensive representation signal quality are better) there is no too many variation, show have based on wireless communication system of the invention
Certain transmission range；In addition, although EVM is deteriorated, but still can be differentiated, illustrating base with the increase of transmission rate
High speed data transfer can be carried out in wireless communication system of the invention.By the binary bits at comparison transmitting-receiving both ends in experiment
Stream information, the baseband digital signal that transmitting terminal generates, which is accurately transferred to receiving end and inerrably demodulated, to be come, it was confirmed that base
In the validity of wireless communication system of the invention.
Fig. 5 show the experiment scene figure on the super surface of time domain coding for wireless communication proposed by the invention, wherein
Left side is transmitting terminal, and right side is receiving end, and the super surface of transmitting terminal time domain coding and receiving end antenna distance are 2.5m.In the experiment
Under scene, the video of a 480p resolution ratio (640 × 480) is converted to binary system by transmitting terminal baseband signal processing module in real time
The random bit stream always that bit stream generates before replacing.In receiving end, the binary bit stream after receiving demodulation is restored again
At vision signal, the video information that transmitting terminal is sent is reappeared.By experimental verification, which can be in higher rate
(1638.4kbps) receives and dispatches both ends under the practical indoor scene of 2.5m, successfully realizes the real-time biography of mass data (video)
It is defeated, embody the stability based on wireless communication system of the invention.
The experimental results showed that based on wireless communication system of the invention, can effectively, stablize it is low real under certain distance
When transmit mass data.The super surface of time domain coding for wireless communication proposed by the invention has principle simple, at low cost
It is honest and clean, it is easy to accomplish the advantages that, also, existing communication system system frame is enormously simplified based on wireless communication system of the invention
Structure, this makes it have very huge application value in the communications field.
The present invention then passes through high speed dynamic and changes the control signal for encoding super surface, provides on time dimension additional
Freedom degree, so that the back wave on the super surface of time domain coding can switch in real time according to control signal under the irradiation of single-tone carrier wave.Lead to again
It crosses and base-band data signal and control signal is established into mapping relations one by one, so that base-band data signal can be directly brought to
In band carrier frequency, wireless communication is realized.The present invention is from principle to experimentally no longer needing legacy communications system transmitter
Uppermixing, filtering and amplification circuits in framework, enormously simplify transmitter architecture, and it is logical to can be used for constructing New System
Letter system, therefore there is potential using value in the communications field.
Claims (4)
1. a kind of super surface of time domain coding for wireless communication characterized by comprising n basic unit, n substantially single
First periodic arrangement, every column unit form submatrix, provide control signal by control circuit.
2. the time domain coding super surface as described in claim 1 for wireless communication, which is characterized in that basic unit includes being situated between
Matter substrate, metal patch, varactor, metal backing, feeding network and metal feed through-hole；Two pole of metal patch and transfiguration
Pipe is covered on medium substrate upper surface, and metal backing and feeding network are covered on medium substrate lower surface, and metal feed through-hole passes through
Wear the upper and lower surface of medium substrate.
3. the time domain coding super surface as described in claim 1 for wireless communication, which is characterized in that control circuit is specific
Are as follows: a baseband signal processor based on FPGA, a 16 digit mode converters and an electricity being made of operational amplifier
Press amplifying circuit；Wherein the baseband signal processor based on FPGA generates baseband digital signal and is passed along 16 digital-to-analogue conversions
Device；Received baseband digital signal is then converted to analog output voltage by 16 digit mode converters, in the range of ± 1V；Voltage is put
Big circuit is amplified after receiving the analog voltage that 16 digit mode converters export, amplification coefficient 12, therefore simulation output
Voltage range is up to ± 12V, absolute value range 24V.
4. the time domain coding super surface as described in claim 1 for wireless communication, which is characterized in that control signal is base band
Digital signal is by corresponding analog control voltage made of conversion, the transfiguration two being loaded into basic unit by feeding network
In pole pipe, changes its electrical parameter, and then control the reflection coefficient phase on the super surface of time domain coding, irradiated by single-tone carrier wave
Afterwards, the phase that the phase of back wave can surpass surface reflection coefficient according to time domain coding changes, the phase and base band of carrier wave
Digital signal just establishes one-to-one relationship.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728435A (en) * | 2019-02-28 | 2019-05-07 | 安徽大学 | A kind of electric adjustable wide-band orbital angular momentum mode reconfigurable antenna of coding |
| CN110718762A (en) * | 2019-09-17 | 2020-01-21 | 东南大学 | Single-beam 1-bit super surface excited by plane wave vertical incidence |
| CN110808472A (en) * | 2019-10-31 | 2020-02-18 | 上海电力大学 | Digital coding unit based on power amplification and super surface |
| CN110829033A (en) * | 2019-10-28 | 2020-02-21 | 东南大学 | High-efficiency electromagnetic wave frequency conversion time domain super surface |
| CN110855589A (en) * | 2019-10-31 | 2020-02-28 | 东南大学 | Time domain coding super surface for realizing wireless communication of multiple modulation schemes |
| CN112310654A (en) * | 2020-10-13 | 2021-02-02 | 西安电子科技大学 | Directional diagram reconfigurable reflective array antenna based on liquid metal |
| CN113629403A (en) * | 2021-09-03 | 2021-11-09 | 东南大学 | Reconfigurable intelligent super-surface capable of carrying out 1/2/3-bit phase modulation under normal incidence and large-inclination incidence angles |
| CN113782977A (en) * | 2021-09-15 | 2021-12-10 | 西安电子科技大学 | Multi-beam reflective array antenna based on super surface and manufacturing method thereof |
| WO2021260698A1 (en) * | 2020-06-23 | 2021-12-30 | Ariel Scientific Innovations Ltd. | System and method for reconfigurable metasurface sub reflector |
| CN113991306A (en) * | 2021-12-28 | 2022-01-28 | 华南理工大学 | Intelligent reflecting surface array control device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684607A (en) * | 2011-03-15 | 2012-09-19 | 深圳光启高等理工研究院 | Metamaterial space modulator |
| US20170219739A1 (en) * | 2016-01-29 | 2017-08-03 | The Board Of Trustees Of The Leland Stanford Junior University | Spatially Multiplexed Dielectric Metasurface Optical Elements |
| CN107204752A (en) * | 2017-05-23 | 2017-09-26 | 东莞天速通信技术有限公司 | Vortex wave beam coding, decoding and the method for communication are realized based on Meta Materials module |
| CN107658569A (en) * | 2017-09-06 | 2018-02-02 | 北京大学 | A kind of digital artificial electromagnetic super surface of 2 bit programmable |
| CN108511916A (en) * | 2018-02-12 | 2018-09-07 | 东南大学 | A kind of Digital Programmable space-time code Meta Materials |
-
2018
- 2018-09-27 CN CN201811128129.5A patent/CN109067445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684607A (en) * | 2011-03-15 | 2012-09-19 | 深圳光启高等理工研究院 | Metamaterial space modulator |
| US20170219739A1 (en) * | 2016-01-29 | 2017-08-03 | The Board Of Trustees Of The Leland Stanford Junior University | Spatially Multiplexed Dielectric Metasurface Optical Elements |
| CN107204752A (en) * | 2017-05-23 | 2017-09-26 | 东莞天速通信技术有限公司 | Vortex wave beam coding, decoding and the method for communication are realized based on Meta Materials module |
| CN107658569A (en) * | 2017-09-06 | 2018-02-02 | 北京大学 | A kind of digital artificial electromagnetic super surface of 2 bit programmable |
| CN108511916A (en) * | 2018-02-12 | 2018-09-07 | 东南大学 | A kind of Digital Programmable space-time code Meta Materials |
Non-Patent Citations (1)
| Title |
|---|
| 刘峻峰等: "太赫兹信息超材料与超表面", 《雷达学报》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728435B (en) * | 2019-02-28 | 2024-03-22 | 安徽大学 | Encoding electrically adjustable broadband orbital angular momentum mode reconfigurable antenna |
| CN109728435A (en) * | 2019-02-28 | 2019-05-07 | 安徽大学 | A kind of electric adjustable wide-band orbital angular momentum mode reconfigurable antenna of coding |
| CN110718762A (en) * | 2019-09-17 | 2020-01-21 | 东南大学 | Single-beam 1-bit super surface excited by plane wave vertical incidence |
| CN110829033B (en) * | 2019-10-28 | 2021-04-27 | 东南大学 | High-efficiency electromagnetic wave frequency conversion time domain super surface |
| CN110829033A (en) * | 2019-10-28 | 2020-02-21 | 东南大学 | High-efficiency electromagnetic wave frequency conversion time domain super surface |
| CN110855589B (en) * | 2019-10-31 | 2022-05-10 | 东南大学 | Time domain coding super surface for realizing wireless communication of multiple modulation schemes |
| CN110855589A (en) * | 2019-10-31 | 2020-02-28 | 东南大学 | Time domain coding super surface for realizing wireless communication of multiple modulation schemes |
| CN110808472A (en) * | 2019-10-31 | 2020-02-18 | 上海电力大学 | Digital coding unit based on power amplification and super surface |
| WO2021260698A1 (en) * | 2020-06-23 | 2021-12-30 | Ariel Scientific Innovations Ltd. | System and method for reconfigurable metasurface sub reflector |
| CN112310654A (en) * | 2020-10-13 | 2021-02-02 | 西安电子科技大学 | Directional diagram reconfigurable reflective array antenna based on liquid metal |
| CN112310654B (en) * | 2020-10-13 | 2021-06-01 | 西安电子科技大学 | Directional diagram reconfigurable reflective array antenna based on liquid metal |
| CN113629403A (en) * | 2021-09-03 | 2021-11-09 | 东南大学 | Reconfigurable intelligent super-surface capable of carrying out 1/2/3-bit phase modulation under normal incidence and large-inclination incidence angles |
| CN113782977A (en) * | 2021-09-15 | 2021-12-10 | 西安电子科技大学 | Multi-beam reflective array antenna based on super surface and manufacturing method thereof |
| CN113991306A (en) * | 2021-12-28 | 2022-01-28 | 华南理工大学 | Intelligent reflecting surface array control device and method |
| CN113991306B (en) * | 2021-12-28 | 2022-08-16 | 华南理工大学 | Intelligent reflecting surface array control device and method |
| WO2023124399A1 (en) * | 2021-12-28 | 2023-07-06 | 华南理工大学 | Device and method for controlling intelligent reflecting surface array |
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Inventor after: Cheng Qiang Inventor after: Dai Junyan Inventor after: Tang Wankai Inventor after: Zhao Jie Inventor after: Jin Shi Inventor after: Cui Tiejun Inventor before: Cheng Qiang Inventor before: Dai Junyan Inventor before: Tang Wankai Inventor before: Zhao Jie Inventor before: Jin Shi Inventor before: Cui Tiejun |
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Application publication date: 20181221 |