CN115276826A - Terahertz induction integration system and method based on spin source - Google Patents

Terahertz induction integration system and method based on spin source Download PDF

Info

Publication number
CN115276826A
CN115276826A CN202210712595.8A CN202210712595A CN115276826A CN 115276826 A CN115276826 A CN 115276826A CN 202210712595 A CN202210712595 A CN 202210712595A CN 115276826 A CN115276826 A CN 115276826A
Authority
CN
China
Prior art keywords
terahertz
source array
spin
spin source
transmitted
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.)
Granted
Application number
CN202210712595.8A
Other languages
Chinese (zh)
Other versions
CN115276826B (en
Inventor
张慧
聂天晓
田祺云
王子颉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beihang University
Hangzhou Innovation Research Institute of Beihang University
Original Assignee
Beihang University
Hangzhou Innovation Research Institute of Beihang University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beihang University, Hangzhou Innovation Research Institute of Beihang University filed Critical Beihang University
Priority to CN202210712595.8A priority Critical patent/CN115276826B/en
Publication of CN115276826A publication Critical patent/CN115276826A/en
Application granted granted Critical
Publication of CN115276826B publication Critical patent/CN115276826B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/90Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention provides a terahertz induction integration system and a method based on a spin source, wherein the system comprises: the terahertz transmitter comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler; the sensing module is used for scheduling the spin source array to transmit terahertz wave pulses to all directions according to different scheduling strategies, analyzing feedback echo information and generating a sensing result; the communication module is used for integrating the information of the remote user to be transmitted and controlling the spin source array to transmit the information required to be transmitted by the remote user and the sensing result according to information modulation modes determined by different scheduling strategies; and the spin source array is used for generating terahertz waves and modulating the terahertz waves or demodulating the transmitted terahertz waves. The invention utilizes the self-spinning source to give consideration to both receiving and transmitting as well as modulation, completes the modulation and receiving-transmitting integrated link, and utilizes the property that the self-spinning source can be adjusted terahertz, thereby realizing the multifunctional communication sensing function.

Description

Terahertz induction integration system and method based on spin source
Technical Field
The document relates to the technical field of communication perception, in particular to a terahertz induction integration system and method based on a spinning source.
Background
The general perception integration is a key technology of the 6G mobile network and is receiving wide attention in the industry. Due to the characteristics of strong penetrability and wide frequency spectrum, the terahertz wave band has great advantages in the aspect of realizing the sense-of-pass integration. The existing terahertz induction integration system carries out user perception by utilizing a plurality of means (such as visual perception, publication number: CN 113595608A) or combines terahertz communication with a high-precision terahertz induction signal to realize signal superposition (such as chirp modulation multiplexing, publication number: CN 113328810A). Terahertz emission in these systems relies mainly on conventional structures and no modification of the physical layer is made.
The traditional terahertz emission methods are two types, one is an optical method, and a photoelectric combination method is adopted to generate a terahertz signal with the frequency being the difference of the frequencies of two beams of light by using an optical heterodyne method. One is an all-solid-state electronic link similar to a microwave wireless link, and a frequency mixer is used for carrying out up-conversion on a baseband or intermediate frequency modulation signal to a terahertz frequency band. For the optical heterodyne link, the transmitting power is low, the system volume is large, the energy consumption is high, the adjustment is difficult, the method is suitable for ground short-distance high-speed communication, and the method is difficult to be used for long-distance communication. For an electronic link, in the terahertz modulation process, user digital information is modulated to an analog domain by a digital-analog converter, a baseband signal is modulated to an intermediate frequency region, and the baseband signal is modulated to a terahertz frequency band through frequency mixing and frequency doubling. This process is complicated in link structure and high in power consumption, and may cause distortion of the digital signal.
Due to the limitation of the device, the modulation of the corresponding rate cannot be realized after the high-speed digital signal is input into the digital-to-analog conversion device, and the whole link rate is limited by the sampling frequency of the digital-to-analog converter. The existing system mainly performs user position calibration and communication perception signal fusion, is not designed aiming at rich application scenes, does not fully utilize terahertz properties such as characteristic absorption and the like, changes waveforms according to actual requirements to realize detection and perception of target requirements, and cannot meet the requirements of the era of the Internet of things.
Disclosure of Invention
The invention provides a terahertz induction integration system and method based on a spin source, and aims to solve the problems.
The invention provides a terahertz induction integration system based on a spinning source, which comprises: the terahertz transmitter comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler;
the scheduler is in communication connection with the sensing module and the communication module and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module is in communication connection with the scheduler and the spin source array, and is used for scheduling the spin source array to transmit terahertz wave pulses to all directions according to different scheduling strategies during transmission, analyzing terahertz wave echo signals received by the terahertz transceiver during receiving, generating a sensing result, and storing user properties and states in the sensing result;
the communication module is in communication connection with the scheduler and the spin source array, and is used for integrating information required to be transmitted by a remote user during transmission, controlling the spin source array to transmit the information required to be transmitted by the remote user and the sensing result according to information modulation modes determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver during receiving and generating a receiving result;
the self-rotating source array is in communication connection with the terahertz transceiver, the communication module and the sensing module, is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to an analog signal transmitted by the terahertz transceiver;
the terahertz transceiver is in communication connection with the spin source array and is used for amplifying terahertz waves transmitted by the spin source array during transmission; and when receiving, the terahertz wave signal is used for receiving the terahertz wave signal radiated to the system.
The invention provides a terahertz induction integration method based on a spin source, which comprises the following steps:
s701, adopting different scheduling strategies according to application scenes through a scheduler;
s702, the sensing module schedules the spin source array to transmit terahertz wave pulses through different scheduling strategies, and after the following step S705, digital signals generated by echoes are analyzed and sensing results are generated;
s703, integrating information required to be transmitted by a remote user through a communication module, converting the information required to be transmitted by the remote user and a sensing result into a digital signal sequence according to information modulation modes determined by different scheduling strategies, and transmitting the modulated terahertz waves through a spin source array;
s704, the terahertz transceiver receives terahertz pulses sent by the spinning source array and performs enhanced transmission on terahertz;
s705, when receiving, the terahertz transceiver receives a terahertz signal transmitted by a far-end user, the terahertz signal transmitted by the far-end user is transmitted into the spin source array in the form of an analog signal, and the spin source array converts the analog signal into a digital signal;
s706, the communication module receives and analyzes the digital signal sequence, restores the initial signal, and transmits the initial signal to the cloud.
By adopting the embodiment of the invention, the universal inductor utilizes the spin source to realize both transmission and modulation, and can convert the digital electric signal into the characteristic of an analog terahertz signal to complete a modulation and receiving-transmitting integrated link. In addition, a system is constructed by utilizing the adjustable property of the spin source to the amplitude, the phase and the chirality of the terahertz in a broadband range, and the multifunctional communication perception function close to an actual scene is realized.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present specification, and that other drawings may be obtained by those skilled in the art without inventive labor.
FIG. 1 is a schematic diagram of a terahertz induction integration system based on a spin source according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a spin source array transmission according to an embodiment of the present invention;
fig. 3 is a flowchart of a terahertz induction integration method based on a spin source according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in one or more embodiments of the present disclosure, the technical solutions in one or more embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in one or more embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.
System embodiment
According to an embodiment of the present invention, a terahertz induction integration system based on a spin source is provided, fig. 1 is a schematic diagram of the terahertz induction integration system based on the spin source according to the embodiment of the present invention, as shown in fig. 1, the terahertz induction integration system based on the spin source according to the embodiment of the present invention includes: a spin source array 12, a terahertz transceiver 13, a communication module 14, a sensing module 11, and a scheduler 10;
the scheduler 10 is in communication connection with the sensing module 11 and the communication module 14, and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module 11 is in communication connection with the scheduler 10 and the spin source array 12, and is used for scheduling the spin source array to transmit terahertz wave pulses to each direction according to different scheduling strategies during transmission, analyzing terahertz wave echo signals received by the terahertz transceiver during reception, generating a sensing result, and storing user properties and states in the sensing result;
the communication module 14 is in communication connection with the scheduler 10 and the spin source matrix 12, and is used for integrating information required to be transmitted by a remote user during transmission, controlling the spin source matrix to transmit the information required to be transmitted by the remote user and a sensing result according to information modulation modes determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver during reception and generating a receiving result;
the self-rotating source array 12 is in communication connection with the terahertz transceiver, the communication module and the sensing module, is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to an analog signal transmitted by the terahertz transceiver;
the terahertz transceiver 13 is in communication connection with the spin source array 12 and is used for amplifying terahertz waves emitted by the spin source array during emission; and during receiving, the terahertz wave signal radiated to the system is received.
Terahertz refers to electromagnetic waves with the frequency within the range of 0.1THz-10THz, and due to the fact that the terahertz is high in penetrability, the spectrum range covers the characteristic spectrum of semiconductors, plasmas, organic matters and biomacromolecules, and the components of substances can be judged through the characteristic absorption of waveforms, so that the sensing purpose is achieved. Secondly, the terahertz wave band is not occupied at present, and the characteristics of high transmission capacity thereof make the terahertz wave band to be widely concerned in the communication field.
The spinning source is a broadband terahertz emission source, and is concerned about due to abundant adjustable means and low price. The main structure of the terahertz wave transmitter is a ferromagnetic layer/non-ferromagnetic layer heterojunction, and the transmitting principle is that laser in the ferromagnetic layer is used for exciting carriers to generate spin current, and the spin current generates ultrafast charge current in the non-magnetic layer due to the inverse spin Hall effect, so that terahertz wave transmission is achieved. The device can realize the regulation and control of terahertz amplitude, phase and polarization state by regulating and controlling laser and a magnetic field, and is a terahertz source with extremely strong regulation and control performance. Furthermore, after a current source is applied to two ends of the terahertz wave, due to the spin transfer torque effect, the current at the two ends changes the magnetic moment of a spin source device, and the terahertz wave can be regulated and controlled more conveniently and rapidly.
The terahertz induction-based integrated system based on the spin source can be freely switched between a communication mode and a sensing mode, and different scheduling strategies are determined to be adopted by a scheduler according to different application scenes. The sensing module schedules the spin source array to transmit terahertz wave pulses to all directions, analyzes echo information and stores user positions and channel states. The communication module integrates information required to be transmitted by a far-end user, converts the information required to be transmitted by the far-end user and a sensing result into digital signals according to information modulation modes determined by different scheduling strategies, and controls the spin source array to transmit, for example, different phases, amplitudes and polarization state distinguishing information are adopted to carry out digital coding. When the terahertz signal is transmitted, a sensing module or a communication module inputs a digital signal sequence to each unit of the spin source array according to the transmission requirement, the digital signal is converted into an analog signal of a THz frequency band through a spin source, and then the THz signal is transmitted in an enhanced mode through a THz transceiver, the THz signal is amplified through the THz transceiver, and the THz signal can be designed through a photoconductive antenna. The self-rotating source can generate terahertz waves with various polarization states and different phases, and the system can transmit the terahertz waves with multiple polarization states, phases, amplitudes and beam angles by combining an antenna array structure. During receiving, the terahertz waveform received by each unit is demodulated into a multi-unit digital signal through the terahertz transceiver and the spin source array device, and the information of each user is analyzed through the communication and perception module. Therefore, the system can realize the transmission and the reception of the terahertz waves with any beam shape, amplitude, phase and polarization state.
Fig. 2 is a schematic diagram of a spin source array transmission according to an embodiment of the present invention, which can encode and transmit with different phases, polarizations, amplitudes, and spatial angles.
Aiming at different application scenes, the system adopts different strategies:
aiming at ultra-short distance quick transmission, the invention uses the characteristic of antenna array beam forming, takes the beam direction as a coding variable, and codes through the angle of the beam direction receiving array, thereby realizing ultra-high speed communication. When the receiving end is far away, the sensing module makes a communication termination conclusion by the frequency spectrum characteristic peak change and combining the signaling information received by the communication module, so that short-distance and ultra-fast transmission and sensing are realized. Under the application environment, the sensing module mainly analyzes the echo of the signal transmitted by the communication module, and the system has low power consumption and high transmission rate.
Aiming at the field of intelligent furniture, the self-rotating source communication integrated system provided by the invention utilizes the phase amplitude and the frequency shift of reflected waves to identify human body gestures, scans the information of articles carried by a user and combined with time to analyze the user behaviors, preliminarily judges the possible behaviors of the user according to a preset mode, communicates with the furniture, and transmits the position, the advancing state and the working mode of the user. The system is not influenced by the illumination state, the photon energy is low, the occupied area is small, and the user disturbance degree is low. At the moment, the sensing communication modules respectively occupy one channel, the two channels are distinguished by space azimuth, polarization and phase according to environmental conditions, and the rest variables bear transmitted information to complete sensing and communication at the same time.
Aiming at the field of safety detection, the system can analyze articles carried by passers by using a perception imaging technology, realize non-perception detection, and alarm and evacuate other passengers by using the communication module when dangerous situations are found. At the moment, the sensing module is dominant, and the communication module is awakened by the scheduler when necessary, so that the consumption is reduced.
To the medical treatment field of detecting, this system can be through nature and the composition of object in the terahertz frequency spectrum information analysis light path, and communication module can upload this characteristic spectrum to the high in the clouds and carry out the comparison analysis to download the result to local, realize quick effectual material composition and detect. In addition, partial tissues can be analyzed by utilizing an imaging function carried in the sensing module, such as caries imaging to judge the depth of caries. At this time, the sensing module and the communication module each utilize one channel.
Aiming at the field of rescue of dangerous cases, the system is not influenced by smoke, sand and dust, can realize search and rescue work and field gas composition analysis under severe environment, and reports the positions of survivors. In this case, the sensing module is mainly occupying the link, and the communication module is awakened by the scheduler in an emergency.
In the terahertz induction integration system based on the spin source, the spin source array simultaneously plays roles of transmitting terahertz and modulating terahertz, information modulation is completed without assistance of other devices, and a digital-to-analog converter is not needed. When the modulation is carried out, the modulation is carried out by high and low levels input to the spin source film, the digital level is directly connected with the spin source array module, and the digital electric signal is controlled by the communication sensing module. The wave beams emitted by the unit enter space interference after the amplification of the transceiver module, and then form different pointed wave beams due to the convergence action of the wave beams of the array, and the wave beam points also contain information during short-distance transmission and contain different digital information when pointing to different positions of the receiving array. The scheduler adjusts the laser digital signal and the circuit digital signal according to different actual scenes to realize the regulation and control of the polarization state, the phase, the amplitude and the like, and determines a frame structure according to the actual scenes. And realizing the customized adjustment of the corresponding signals of the corresponding scenes.
The terahertz modulator-transmitter has two main advantages, one is the improvement of the physical layer of the existing terahertz communication system, and the novel device of the spin source type is introduced to realize the terahertz modulation-transmitter integration and the digital-analog conversion. Secondly, a spinning terahertz source is used for modulating phase, amplitude and polarization, and an appropriate transmitting signal is selected according to a scene faced by the general-purpose integrated system, so that the terahertz communication customized by the environment is achieved, and the method specifically comprises the following steps:
the digital signal is modulated into the analog signal by utilizing the spinning source, a digital baseband and a medium frequency modulation in the traditional modulation are omitted, the terahertz frequency is achieved in one step, the energy consumption is low, the process is simple and quick, the digital signal distortion is small, the structure is simple, and the integration is easy.
The amplitude, the phase and the polarization state of the terahertz waveform are freely regulated and controlled by a spinning terahertz source, the code rate is improved, and ultra-fast communication is realized. The nanosecond-level inversion of the internal magnetic field is realized by using the spin transfer torque effect of a spin source, so that the high-speed transmission of information is realized.
The magnetic moment of the spin source does not need to be maintained by current after being inverted, and the static power consumption is low
Spin sources are integrated in an array form, a high-performance terahertz modulator controlled by coding is constructed, and the random regulation and control of the direction of a transmitted signal beam are realized.
Different modulation modes are adopted for different transmission modes, information transmission or channel division is carried out by using different variables of waves according to requirements, meanwhile, the sensing communication function is realized, and efficient and reliable environment customized information transmission is realized.
The system does not need illumination, is not influenced by smoke, dust and sand, and has low environmental requirement and strong adaptability. The internal communication module can be compared with a far-end characteristic spectrum, and has low memory capacity and low energy consumption.
For short-distance communication, beam pointing is adopted as a coding mode, so that the code rate is greatly improved, and the coding rate is exponentially improved based on the array size.
The system can be directly connected with the optical fiber and controlled by optical signals, can also be connected with an electric module and controlled by electricity, and can be embedded into various known systems.
By adopting the embodiment of the invention, the invention has the following beneficial effects:
1. the system improves the problems that the traditional modulator is complex in structure, difficult to integrate, high in power consumption and volatile and real in the modulation process of digital signals. The characteristics of amplitude, phase and chirality of terahertz generated by a magnetic field and laser regulation and control spin source are utilized, and the conversion from a digital signal to an analog terahertz waveform can be realized in one step through digital regulation and control (such as a turning magnetic field) on the magnetic field and light intensity, so that digital-analog integrated regulation and control is realized. The system has the advantages of no ADC sampling rate and multiple frequency conversion filtering problems, simple structure, easy integration, low energy consumption and difficult distortion of digital information. And the optical fiber can be combined for use, so that the static power consumption is low, and the advantages of the device are great.
2. Ultra-fast information modulation rates. Because the internal magnetic field of the spin terahertz source can be freely regulated and controlled by current based on spin-torque-transfer (SOT) effect, the current turnover time is controlled to be at nanosecond level by the effect, and the spin array based on the device can realize single-link high-speed information transmission from several GHz to tens of GHz.
3. Rich coding modes improve the channel rate. Because the spin source can realize random regulation and control on the terahertz amplitude, phase and polarization state under controllable laser and magnetic field, and the array can randomly adjust the direction of the transmitted beam, the system adopting the spin source array can transmit by utilizing more properties of carriers, such as the pointing direction of the beam and the terahertz polarization state of the final waveform.
4. The induction integration system based on the spin source array is provided, and various requirements are met. According to different application scenes, terahertz waves with different characteristics are emitted to meet emission requirements, and regulation and control are achieved. And the sensing or communication requirements are realized by adopting different transmission waveforms according to different scenes.
Method embodiment
According to an embodiment of the present invention, a terahertz induction integration method based on a spin source is provided, fig. 3 is a flowchart of the terahertz induction integration method based on the spin source according to the embodiment of the present invention, and as shown in fig. 3, the terahertz induction integration method based on the spin source according to the embodiment of the present invention includes:
step S301, adopting different scheduling policies according to application scenarios through a scheduler, wherein the step S301 specifically includes:
the scheduler realizes the regulation and control of multi-polarization state, multi-phase, multi-amplitude and the like by regulating the limits of the laser digital signals and the circuit digital signals according to different application scenes, and determines a frame structure according to the application scenes.
Step S302, a sensing module schedules a spin source array to transmit terahertz wave pulses through different scheduling strategies, and echo results are analyzed; the terahertz wave is modulated by the spin source array through high and low levels or laser pulses.
Step S303, a communication module integrates information to be transmitted by a remote user, converts the information to be transmitted by the remote user and a sensing result into a digital signal sequence according to information modulation modes determined by different scheduling strategies, and transmits modulated terahertz waves through a spin source array, wherein the step S303 specifically comprises:
the terahertz wave antenna comprises a receiving communication module, a specific number of spin sources in a spin source array generate terahertz waves with various polarization states and different phases according to the digital signal sequence, and terahertz waves with multi-polarization states, phases, amplitudes and beam angles are formed according to an antenna array structure of the spin source array.
Step S304, a terahertz transceiver receives terahertz pulses sent by a spin source array and performs enhanced transmission on terahertz;
step S305, during receiving, the terahertz transceiver receives a terahertz signal transmitted by a far-end user, the terahertz signal transmitted by the far-end user is transmitted into the spin source array in the form of an analog signal, and the spin source array converts the analog signal into a digital signal;
step S306, the communication module receives and analyzes the digital signal sequence, restores the initial signal, and transmits the initial signal to the cloud.
The terahertz induction integration method based on the spin source can be freely switched between a communication mode and a sensing mode, and different scheduling strategies are determined to be adopted by a scheduler according to different application scenes. The sensing module schedules the spin source array to transmit terahertz wave pulses to all directions, analyzes echo information and stores user states. The communication module integrates the information of the remote user to be transmitted, and transmits the information to be transmitted of the remote user and the sensing result in an information modulation mode determined by the scheduler, for example, digital coding is performed by adopting different phases, amplitudes and polarization state distinguishing information. When the terahertz signal is transmitted, a sensing module or a communication module inputs a digital signal sequence to each unit of the spin source array according to the transmission requirement, the digital signal is converted into an analog signal of a THz frequency band through a spin source, and then the THz signal is transmitted in an enhanced mode through a THz transceiver, the THz signal is amplified through the THz transceiver, and the THz signal can be designed through a photoconductive antenna. The self-rotating source can generate terahertz waves with various polarization states and different phases, and the system can transmit the terahertz waves with multiple polarization states, phases, amplitudes and beam angles by combining an antenna array structure. During receiving, the terahertz waveform received by each unit is demodulated into a multi-unit digital signal through the terahertz transceiver and the spin source array device, and the information of each user is analyzed through the communication and perception module. Therefore, the system can realize the terahertz wave transmission and reception of any beam shape and amplitude, phase and polarization state thereof.
By adopting the embodiment of the invention, the following beneficial effects are achieved:
1. the method improves the problems that the traditional modulator is complex in structure, difficult to integrate, high in power consumption and volatile in the process of modulating the digital signal. The characteristics of amplitude, phase and chirality of terahertz generated by a magnetic field and laser regulation and control spin source are utilized, and the conversion from a digital signal to an analog terahertz waveform can be realized in one step through digital regulation and control (such as a turning magnetic field) on the magnetic field and light intensity, so that digital-analog integrated regulation and control is realized. The system has the advantages of no ADC sampling rate and multiple frequency conversion filtering problems, simple structure, easy integration, low energy consumption and difficult distortion of digital information. And the optical fiber can be combined for use, so that the static power consumption is low, and the device has great advantages.
2. Ultra-fast information modulation rates. Because the internal magnetic field of the spin terahertz source can be freely regulated and controlled by current based on spin-torque transfer effect (SOT), the switching time of the current is controlled to be at nanosecond level by the effect, and the spin array based on the device can realize single-link high-speed information transmission from several GHz to tens of GHz.
3. Rich coding modes improve the channel rate. Because the spin source can realize random regulation and control on the terahertz amplitude, phase and polarization state under controllable laser and magnetic field, and the array can randomly adjust the direction of the transmitted beam, the system adopting the spin source array can transmit by utilizing more properties of carriers, such as the pointing direction of the beam and the terahertz polarization state of the final waveform.
4. The induction integration system based on the spin source array is provided, and various requirements are met. According to different application scenes, terahertz waves with different characteristics are emitted to meet emission requirements, and regulation and control are achieved. And the sensing or communication requirements are realized by adopting different transmission waveforms aiming at different scenes.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A terahertz induction integration system based on a spin source is characterized by comprising: the terahertz transmitter comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler;
the scheduler is in communication connection with the sensing module and the communication module and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module is in communication connection with the scheduler and the spin source array, and is used for scheduling the spin source array to transmit terahertz wave pulses to all directions according to different scheduling strategies during transmission, analyzing terahertz wave echo signals received by the terahertz transceiver during receiving, generating a sensing result, and storing user properties and states in the sensing result;
the communication module is in communication connection with the scheduler and the spin source array, and is used for integrating information required to be transmitted by a remote user during transmission, controlling the spin source array to transmit the information required to be transmitted by the remote user and the sensing result according to information modulation modes determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver during receiving and generating a receiving result;
the self-rotating source array is in communication connection with the terahertz transceiver, the communication module and the sensing module, and is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to an analog signal transmitted by the terahertz transceiver;
the terahertz transceiver is in communication connection with the spin source array and is used for amplifying terahertz waves emitted by the spin source array during emission; and when receiving, the terahertz wave signal is used for receiving the terahertz wave signal radiated to the system.
2. The system according to claim 1, characterized in that said array of spin sources comprises in particular: a particular number of spin sources that are terahertz wave sources within the system.
3. The system of claim 2, wherein the spin source array is specifically configured to:
receiving the digital signal sequence sent by the sensing module or the communication module, generating terahertz waves with various polarization states and different phases through a specific number of spin sources in the spin source array according to the digital signal sequence, and forming terahertz waves with multiple polarization states, phases, amplitudes and beam angles according to an antenna array structure of the spin source array.
4. The system of claim 1, wherein the spin source array is further configured to:
and receiving an analog signal transmitted by the terahertz transceiver, and converting the analog signal into a digital signal.
5. The system of claim 1, wherein the scheduler is specifically configured to: and controlling the opportunity sent by the sensing module or the communication module, and the corresponding relation between the digital control signal sequences corresponding to the terahertz waves with different phases, amplitudes and polarization states and the information to be transmitted, and determining the information encoding mode.
6. The system of claim 1, wherein the spin source array is further configured to: the terahertz waves are modulated by high and low levels or laser pulses.
7. A terahertz induction integration method based on a spinning source is characterized by comprising the following steps:
s701, adopting different scheduling strategies according to application scenes through a scheduler;
s702, the sensing module schedules the spin source array to transmit terahertz wave pulses through different scheduling strategies, and after the following step S705, digital signals generated by echoes are analyzed and sensing results are generated;
s703, integrating information required to be transmitted by a remote user through a communication module, converting the information required to be transmitted by the remote user and a sensing result into a digital signal sequence according to information modulation modes determined by different scheduling strategies, and transmitting modulated terahertz waves through a spin source array;
s704, a terahertz transceiver receives terahertz pulses sent by the spinning source array and carries out enhanced transmission on the terahertz pulses;
s705, when receiving, the terahertz transceiver receives a terahertz signal transmitted by a far-end user, the terahertz signal transmitted by the far-end user is transmitted to the spin source array in the form of an analog signal, and the spin source array converts the analog signal into a digital signal;
s706, the communication module receives and analyzes the digital signal sequence, restores the initial signal and transmits the initial signal to the cloud.
8. The method as claimed in claim 7, wherein the scheduling of the terahertz wave pulses transmitted by the spin source array through different scheduling strategies specifically comprises:
the terahertz wave is modulated by the spin source array through high and low levels or laser pulses.
9. The method according to claim 7, wherein the adopting, by the scheduler, different scheduling policies according to application scenarios includes:
the scheduler realizes the regulation and control of multi-polarization state, multi-phase, multi-amplitude and the like by regulating the limits of the laser digital signals and the circuit digital signals according to different application scenes, and determines a frame structure according to the application scenes.
10. The method according to claim 7, wherein information modulation modes determined according to different scheduling strategies are converted into digital signal sequences, and transmitting the modulated terahertz waves through the spin source array specifically comprises:
receiving the digital signal sequence sent by the communication module, generating terahertz waves with various polarization states and different phases through a specific number of spinning sources in a spinning source array according to the digital signal sequence, and forming the terahertz waves with multi-polarization states, phases, amplitudes and beam angles according to an antenna array structure of the spinning source array.
CN202210712595.8A 2022-06-22 2022-06-22 Terahertz sense-through integrated system and method based on spin source Active CN115276826B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210712595.8A CN115276826B (en) 2022-06-22 2022-06-22 Terahertz sense-through integrated system and method based on spin source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210712595.8A CN115276826B (en) 2022-06-22 2022-06-22 Terahertz sense-through integrated system and method based on spin source

Publications (2)

Publication Number Publication Date
CN115276826A true CN115276826A (en) 2022-11-01
CN115276826B CN115276826B (en) 2023-08-04

Family

ID=83760394

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210712595.8A Active CN115276826B (en) 2022-06-22 2022-06-22 Terahertz sense-through integrated system and method based on spin source

Country Status (1)

Country Link
CN (1) CN115276826B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110176533A (en) * 2019-05-10 2019-08-27 电子科技大学 A kind of spin electric device of photoresponse and preparation method thereof
CN110865032A (en) * 2019-12-11 2020-03-06 中国工程物理研究院流体物理研究所 Terahertz imaging system
CN113328810A (en) * 2021-06-01 2021-08-31 浙江大学 Chirp multiplexing terahertz communication perception integrated system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110176533A (en) * 2019-05-10 2019-08-27 电子科技大学 A kind of spin electric device of photoresponse and preparation method thereof
CN110865032A (en) * 2019-12-11 2020-03-06 中国工程物理研究院流体物理研究所 Terahertz imaging system
CN113328810A (en) * 2021-06-01 2021-08-31 浙江大学 Chirp multiplexing terahertz communication perception integrated system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨晴等: "自旋太赫兹源发展及其在生物医学的应用前景分析", 中国材料进展, vol. 40, no. 12, pages 8 - 20 *

Also Published As

Publication number Publication date
CN115276826B (en) 2023-08-04

Similar Documents

Publication Publication Date Title
Tang et al. Programmable metasurface‐based RF chain‐free 8PSK wireless transmitter
CN108919244B (en) Microwave photon all-band radar detection method and microwave photon all-band radar
CN108155949B (en) Microwave photon multi-frequency binary phase coding signal generation device and method
Bai et al. Photonic millimeter-wave joint radar communication system using spectrum-spreading phase-coding
CN105007121B (en) Millimeter wave orbital angular momentum communication device and method based on light-carried wireless technology
CN110444896B (en) Programmable nonreciprocal transmission and frequency conversion system based on space-time coding super surface
CN109932691B (en) Microwave photon radar-communication integrated method and device
CN110365616A (en) Surpass the multi-user wireless communication system and method on surface based on space-time code
CN106230516B (en) Radar communication based on microwave photon fights integral system
CN109375200B (en) Photon up-conversion-based optical carrier distributed radar detection method and device
WO2020207442A1 (en) Terahertz signal generation method and apparatus, and computer readable storage medium
CN111565075A (en) Broadband microwave photon phase coding signal generation device and method
CN102854695A (en) Device and method for generating terahertz wave based on nested Mach-Zehnder modulator
Zhou et al. An RF-source-free reconfigurable microwave photonic radar with high-resolution and fast detection capability
Sun et al. Photonic-assisted high-resolution incoherent back projection synthetic aperture radar imaging
Jha et al. Challenges and potentials for visible light communications: State of the art
CN115276826B (en) Terahertz sense-through integrated system and method based on spin source
CN101262300A (en) Chaos interference system for chaos synchronization
Du et al. Widely-tunable and background-free ultra-wideband signals generation utilizing polarization modulation-based optical switch
CN104683035A (en) Optical down-conversion method and system for high-frequency narrowband signal
CN110011780B (en) Analog-digital mixed electro-optical chaotic signal synchronous generating device
SE9902213D0 (en) A method for controlling the radiation pattern of an antenna means, an antenna system and a radio communication device
CN116400520A (en) Photonic ultra-wideband terahertz frequency hopping source based on high-order electro-optic modulation
CN106940440B (en) A kind of transceiving integrated radar system of full optical link gain and application method
Zhou et al. MPPM Spectrum Analysis Based on PPM

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