CN114726395A - Wireless information and energy simultaneous transmission system based on adjustable frequency source and working method thereof - Google Patents

Wireless information and energy simultaneous transmission system based on adjustable frequency source and working method thereof Download PDF

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Publication number
CN114726395A
CN114726395A CN202210200082.9A CN202210200082A CN114726395A CN 114726395 A CN114726395 A CN 114726395A CN 202210200082 A CN202210200082 A CN 202210200082A CN 114726395 A CN114726395 A CN 114726395A
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signal
circuit
frequency
energy
power
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CN114726395B (en
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吴思慧
胥鑫
林先其
董金生
於阳
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University of Electronic Science and Technology of China
Yangtze River Delta Research Institute of UESTC Huzhou
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University of Electronic Science and Technology of China
Yangtze River Delta Research Institute of UESTC Huzhou
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/10Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12Modulator circuits; Transmitter circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • 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

Abstract

The invention discloses a wireless information and energy simultaneous transmission system based on an adjustable frequency source, which comprises an adjustable frequency source, a power amplification circuit, a power distributor, a rectifying circuit, a filtering circuit, an information demodulation circuit and a load, wherein the adjustable frequency source is connected with the power amplification circuit, the power amplification circuit transmits signals and energy to a receiving antenna in an electromagnetic wave mode through a transmitting antenna, the receiving antenna receives the signals and the energy transmitted by a transmitting end, the receiving antenna is connected with the power distributor, the power distributor is respectively connected with the rectifying circuit and the information demodulation circuit, the rectifying circuit is connected with the filtering circuit, and the filtering circuit is connected with the load. The microwave wireless communication energy transmission system adopts microwave wireless communication energy transmission, does not adopt a switch to switch signals, has strong flexibility, less system loss and long service life, has strong anti-interference performance and extremely high use value, and can be widely popularized and applied.

Description

Wireless information and energy simultaneous transmission system based on adjustable frequency source and working method thereof
Technical Field
The invention relates to the technical field of wireless, in particular to a wireless information and energy simultaneous transmission system based on an adjustable frequency source and a working method thereof.
Background
The traditional electric energy transmission depends on wire transmission, namely wired energy transmission, and is the most widely used electric energy transmission form at present. However, as technology advances and the living standard of human beings increases, the shortages of wired power transmission become more and more non-negligible: the use of a large number of wires makes human life disorderly; many potential safety hazards are brought by factors such as frequent plugging and unplugging of a power socket, easy abrasion of conducting wire materials and the like; the use of wires places limitations on the application of electrical energy, etc. Therefore, wireless energy transfer has been greatly developed in recent years.
However, in many applications, not only wireless transmission of energy but also wireless transmission of information, i.e. synchronous transmission of wireless energy and information, is required. For example, in the fields of smart ammunition, human body implantable devices, sensor networks, RFID, mobile devices, and the like, a transmitter needs to transmit energy and also needs to perform bidirectional data transmission with a receiver, for example, the transmitter sends a control command to the receiver, and the receiver reversely transmits information such as sensor data, a user ID, a charging state, a number of users, and reception power to the transmitter. Therefore, it is necessary to research the technology of synchronous transmission of wireless energy and information.
The existing wireless information and energy simultaneous transmission methods mainly comprise two types, one is signal and energy channel transmission, and the other is signal and energy channel transmission.
(1) Signal and energy subchannel transmission
The signal and energy channel transmission adopts two different sets of coils and driving circuits to perform independent energy transmission and signal transmission respectively, as shown in fig. 1.
The information and energy co-transmission mode can carry out transmission through respective channels, has the advantages of high efficiency, high speed and the like, but because two groups of coupling coils are too close to each other in the same equipment, mutual interference can be caused, and especially, the transmission of high-power energy easily causes great interference to the signal transmission, thereby influencing the transmission characteristic of the system.
(2) Signal and energy co-channel transmission
Signal and energy transmission in the same channel is generally divided into three types: amplitude modulation information and energy simultaneous transmission, frequency modulation information and energy simultaneous transmission, direct frequency modulation information and energy simultaneous transmission and signal reverse information and energy simultaneous transmission.
a. Signal-energy simultaneous transmission based on amplitude modulation
The synchronous transmission mode is characterized in that a switch tube is added into a main circuit, the input of a power supply is controlled by the on and off of the switch tube, the amplitude of electric energy transmission is changed, and therefore the amplitude of the electric energy received by an output end has the characteristics of digital signals '1' and '0'. The receiving end demodulates the signal of the transmitting end according to the change of the electric energy.
b. Signal and energy simultaneous transmission based on frequency modulation
The frequency modulation-based simultaneous transmission technology for the information and the energy is characterized in that the frequency of a pulse signal generated by a signal generator in an inverter circuit is controlled through a soft switching technology, in an experiment, two pulse signals with different frequencies are usually arranged on a switching tube of the inverter circuit and respectively represent a digital signal '0' and a digital signal '1', a voltage waveform presenting a 010101 characteristic is obtained on a load at a receiving end of a system, namely the simultaneous transmission of the information and the energy is finished, and the circuit structure of the system is shown in fig. 2.
c. Direct frequency modulation modulated information and energy simultaneous transmission
The method is characterized in that a group of signal sending coils and a group of signal receiving coils are added on the premise of not changing the structure of the inductive power transmission system, the two groups of coupling coils are similar to a coupling transformer, high-frequency signals are directly loaded into a power transmitting circuit by using the signal sending coils, then the signal receiving coils pick up the signals from a power receiving loop, and forward signals are obtained through a demodulation circuit. The circuit structure is shown in fig. 3.
d. Reverse transmission of signals
The signal reverse transmission is that two capacitors, one is resonance capacitor and the other is detuning capacitor, are added to the receiving end, the compensation structure is changed by gating the two capacitors, the electric energy received by the receiving loop is influenced, so that the electric energy has the characteristics of digital signals, and then the signals are acquired and demodulated.
The signal and energy simultaneous transmission technology based on amplitude modulation can accurately transmit signals to a receiving end by controlling the on-off of a coding switch, and has the advantages of clear 0 and 1 signal transmission limits, small influence of electric energy transmission on signal transmission and the like, but the invention has the biggest defects that the electric energy transmission stability is obviously reduced, harmonic interference is easily generated at the moment of opening and closing the switch, the load power is seriously reduced during the opening period, and the transmission performance is further influenced; the modulation is carried out by changing the frequency characteristic of the signal based on the frequency modulation signal-energy simultaneous transmission technology, so that sudden interruption and restart of energy transmission cannot occur compared with amplitude modulation, but the electric energy transmission efficiency can still be reduced, and the signal transmission rate can be influenced by the system modulation time delay; the direct frequency modulation modulated signal and energy simultaneous transmission is limited to the volume of equipment, is not suitable for equipment with narrow space, and causes great interference to signal coupling in the transmission process of electric energy transmission; the signal reverse transmission technology is easy to cause the resonance state of the system to shift, and when the transmission power of the system is larger, stronger electromagnetic interference is caused, and the surrounding environment is influenced.
It can be seen that although the above-mentioned several methods can achieve synchronous wireless transmission of signals and energy, each method has advantages and disadvantages, and therefore, it is necessary to design a simultaneous signal and energy transmission system that can overcome power supply discontinuity and avoid system offset frequency. In addition, the above several methods all adopt magnetic coupling type wireless transmission, and although the method has high transmission efficiency and good penetrability, the transmission power is low, and the method is not suitable for long-distance transmission. The present invention has been devised in view of the above problems.
Disclosure of Invention
The invention aims to provide a wireless information and energy simultaneous transmission system based on an adjustable frequency source and a working method thereof, so as to solve the practical technical problems that the existing system is low in transmission power and not suitable for long-distance transmission.
The technical invention for solving the technical problems is as follows:
a wireless information and energy simultaneous transmission system based on an adjustable frequency source comprises the adjustable frequency source, a power amplification circuit, a power divider, a rectifying circuit, a filtering circuit, an information demodulation circuit and a load, wherein the adjustable frequency source is connected with the power amplification circuit, the power amplification circuit transmits signals and energy to a receiving antenna in an electromagnetic wave mode through a transmitting antenna, the receiving antenna receives the signals and the energy transmitted by a transmitting end, the receiving antenna is connected with the power divider, the power divider is respectively connected with the rectifying circuit and the information demodulation circuit, the rectifying circuit is connected with the filtering circuit, and the filtering circuit is connected with the load.
Furthermore, the adjustable frequency source is an adjustable microwave frequency source, and the duration time of different frequencies can be controlled, so that 2FSK modulation is realized.
Further, the power amplifying circuit includes a transistor.
Further, the power divider is a power divider or a coupler.
Furthermore, the rectifying circuit is composed of rectifying diodes.
Furthermore, the filter circuit can remove fundamental frequency components and higher harmonic components.
Furthermore, the information demodulation circuit can realize the restoration of the signal at the transmitting end to obtain the required digital information.
The invention also provides a working method of the wireless information and energy simultaneous transmission system based on the adjustable frequency source, which comprises the following steps:
(1) a transmitting end:
1) the crystal oscillator generates a reference signal s1 with the frequency f 1;
2) a signal s1 is divided into two paths of signals s2 and s3 through a power divider, the frequencies of s2 and s3 are both f1, the power is divided into two parts according to a certain proportion, wherein the signal s2 is used as a reference source of a frequency doubling link, and the signal s3 is used as a reference source of a phase-locked loop or a DDS;
3) the signal s2 is amplified by an amplifier, then a frequency multiplier is used for obtaining a signal s4 with the frequency of f2, and the signal s4 filters interference signals such as higher harmonics, intermodulation signals and the like generated by the frequency multiplier through a filter to obtain a signal s5 with the frequency of f 2;
4) inputting a signal s3 into a phase-locked loop or a DDS, controlling the phase-locked loop or the DDS by using an FPGA (field programmable gate array) or a single chip microcomputer, and generating a signal s6 with adjustable frequency and adjustable frequency duration, wherein the frequency of any adjustable signal s6 is assumed to be f 3;
5) the signal s5 is sent to a mixer after being amplified by an amplifier, and is mixed with the signal s6 to generate a signal s7 with the frequency of f3+ f 2;
6) the signal s7 outputs a signal s8 with a frequency of f3+ f2 after filtering out some spurious signals generated by the mixer;
7) the signal s8 is amplified by the power amplifier to obtain a signal s9 with the output frequency of f3+ f2, and then the signal is transmitted by the antenna;
(2) receiving end:
1) after receiving a signal s9, an antenna divides the signal into two paths of signals s10 and s11 through a power divider;
2) s10 is input into a rectification circuit, the received alternating current is converted into direct current, and then fundamental frequency components and higher harmonic components are filtered out by a filter and then are transmitted to a load;
3) s11 is input to the information demodulation circuit to demodulate the corresponding information.
The invention has the following beneficial effects:
the microwave wireless communication energy transmission is adopted, and a switch is not adopted for switching signals, so that compared with the prior art, the microwave wireless communication energy transmission system has the advantages of strong flexibility, less system loss, long service life and strong anti-interference performance, and the remarkable progress of the technology is highlighted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of energy and signal subchannel transmission;
FIG. 2 is a circuit diagram of a simultaneous transmission system based on frequency modulation;
FIG. 3 is a direct modulation message and energy simultaneous transmission system;
FIG. 4 is a waveform diagram of a 2FSK signal;
FIG. 5 is a block diagram of a wireless communication and energy simultaneous transmission system based on an adjustable frequency source;
FIG. 6 is a block diagram of an embodiment of an information demodulation circuit;
fig. 7 is a block diagram of an embodiment of an adjustable frequency source.
Detailed Description
The principles and features of the present invention are described below in conjunction with the embodiments and the accompanying drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
First, the technical principle of the invention
The invention uses 2FSK modulation, which is a frequency modulation method, and transmits digital information (baseband signal) by using the frequency of carrier wave, i.e. the frequency of carrier wave is controlled by the transmitted digital information. Carrier frequency f2 is represented by the symbol "0", and carrier frequency f1 is represented by the symbol "1" (f1 and f2 are different frequencies). When the system transmits a signal '0', a carrier wave with the frequency f2 is transmitted; when the signal "1" is transmitted, a carrier wave having a frequency f1 is transmitted. A 2FSK waveform diagram is shown in fig. 4.
The invention utilizes FPGA or singlechip software programming to control a phase-locked loop or DDS to keep different frequencies for different time (2FSK signal), and supposing that a symbol "1" represents the frequency f1, a symbol "0" represents the frequency f2, and the duration of one symbol is t1 (which can be regarded as 100us in figure 4). Then the tunable frequency source outputs the frequency f1 with a holding time of 2t1, and then outputs the frequency f2 with a holding time of t1, which represents that the baseband signal (i.e., digital information) is 110.
The invention utilizes an adjustable frequency source to output 2FSK signals, a receiving end receives the signals and divides the signal power into two parts, and one part can obtain information (namely baseband signals) transmitted by a transmitting end through a demodulation circuit.
Second, description of each module of the system of the present invention
The wireless information and energy simultaneous transmission system based on the adjustable frequency source, as shown in fig. 5, comprises the following parts, and the description of each part is as follows:
(1) adjustable frequency source: the module can realize the output of any frequency for an adjustable microwave frequency source, and can control the duration of different frequencies to realize 2FSK modulation.
(2) A power amplification circuit: the amplifier for realizing signal power mainly comprises transistors.
(3) The power divider is: the frequency of the signal can be kept unchanged, the power can be distributed according to a certain proportion, the power distribution is generally realized by a power divider or a coupler, and the power divider and the coupler are generally designed by using microstrip lines.
(4) A rectifier circuit: the circuit for converting the received ac power to dc power is generally composed of a rectifier diode.
(5) A filter circuit: the rectifier circuit is realized by a rectifier diode, the nonlinear characteristic of the diode can generate higher harmonic components, so that the direct current voltage ripple component at the load end is very large, and the filter circuit is used for removing fundamental frequency components and higher harmonic components.
(6) An information demodulation circuit: and restoring the signal of the transmitting end to obtain the required digital information.
An information demodulation circuit:
operation principle as shown in fig. 6, the frequency of the signal s9 entering the information demodulation circuit is f3+ f2, and since the frequency f3 is adjustable, the frequency of the signal entering the information demodulation circuit is variable. Assuming that two signals with different frequencies are f4 and f5, when a signal with the frequency of f4 is input into the circuit, the f4 LC parallel resonant circuit resonates, the f5 LC parallel resonant circuit does not resonate, the voltage of the resonant circuit is greater than that of the non-resonant circuit, and the voltage comparator outputs a high level "1" at the moment; similarly, when a signal having a frequency of f5 is input, a low level "0" is output, that is, demodulation of the 2FSK signal is completed.
As shown in fig. 6, the description of each module is as follows:
(1) f4 LC parallel resonant circuit: the resonant circuit composed of the inductor and the capacitor has a resonant frequency f4, and a signal with a frequency f4 can pass through the resonant circuit smoothly.
(2) f5 LC parallel resonant circuit: and f4 LC parallel resonance circuit.
(3) A voltage comparator: the comparator is used for comparing the magnitude of two input voltages and consists of an operational amplifier. When the voltage at the + input terminal is higher than the-input terminal, the output of the voltage comparator is at a high level, which can be represented as a digital "1"; when the voltage at the "+" input is lower than the "-" input, the voltage comparator output is low, which may be represented as "0".
Third, the working method of the system of the present invention is explained in detail
The operation of the whole system is explained with reference to fig. 5, fig. 6 and fig. 7:
(1) a transmitting end:
1) the crystal oscillator generates a reference signal s1 with the frequency f 1;
2) a signal s1 is divided into two paths of signals s2 and s3 through a power divider, the frequencies of s2 and s3 are both f1, the power is divided into two parts according to a certain proportion, wherein the signal s2 is used as a reference source of a frequency doubling link, and the signal s3 is used as a reference source of a phase-locked loop or a DDS;
3) the signal s2 is amplified by an amplifier, then a frequency multiplier is used for obtaining a signal s4 with the frequency of f2, and the signal s4 filters interference signals such as higher harmonics, intermodulation signals and the like generated by the frequency multiplier through a filter to obtain a signal s5 with the frequency of f 2;
4) inputting a signal s3 into a phase-locked loop or a DDS, controlling the phase-locked loop or the DDS by using an FPGA (field programmable gate array) or a singlechip to generate a signal s6 with adjustable frequency and adjustable frequency duration, wherein the frequency of any adjustable signal s6 is assumed to be f 3;
5) the signal s5 is sent to a mixer after being amplified by an amplifier, and is mixed with the signal s6 to generate a signal s7 with the frequency of f3+ f 2;
6) the signal s7 outputs a signal s8 with a frequency of f3+ f2 after filtering out some spurious signals generated by the mixer;
7) the signal s8 is amplified by the power amplifier to obtain a signal s9 with the output frequency of f3+ f2, and then the signal is transmitted by the antenna;
(2) receiving end:
1) after receiving a signal s9, an antenna divides the signal into two paths of signals s10 and s11 through a power divider;
2) s10 is input into a rectification circuit, the received alternating current is converted into direct current, and then fundamental frequency components and higher harmonic components are filtered out by a filter and then are transmitted to a load;
3) s11 is input to the information demodulation circuit to demodulate the corresponding information.
The system of the invention adopts microwave type wireless information energy transmission, and does not adopt a switch to switch signals, compared with the prior art, the system has the following technical advantages:
(1) the flexibility is strong, and different signals can be transmitted only by changing codes of the FPGA or the DDS without switching a switch;
(2) the microwave transmission can be used for realizing the transmission of middle and long distance signals;
(3) the loss of a system is reduced, and the service life is prolonged. The prior art utilizes switch switching, has high performance required for the switch, and needs the switch to be switched continuously if continuous signals are transmitted, has high performance required for the switch, is easy to generate switch loss, and has no problems when the invention directly utilizes software for control;
(4) the anti-interference performance is strong. 2FSK modulation is used for transmitting signals without depending on amplitude, so even if an interference source with the same frequency disturbs the amplitude of an electric wave, noise is not formed on the 2FSK signal.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. A wireless information and energy simultaneous transmission system based on an adjustable frequency source is characterized by comprising an adjustable frequency source, a power amplifying circuit, a power distributor, a rectifying circuit, a filtering circuit, an information demodulating circuit and a load, wherein the adjustable frequency source is connected with the power amplifying circuit, the power amplifying circuit transmits signals and energy to a receiving antenna in an electromagnetic wave mode through a transmitting antenna, the receiving antenna receives the signals and the energy transmitted by a transmitting end, the receiving antenna is connected with the power distributor, the power distributor is respectively connected with the rectifying circuit and the information demodulating circuit, the rectifying circuit is connected with the filtering circuit, and the filtering circuit is connected with the load.
2. The wireless communication and energy simultaneous transmission system based on adjustable frequency source as claimed in claim 1, wherein the adjustable frequency source can control the duration of different frequencies to realize 2FSK modulation.
3. The tunable frequency source-based wireless communication and energy transmission system according to claim 1, wherein the power amplification circuit comprises a transistor.
4. The system according to claim 1, wherein the power divider is a power divider or a coupler.
5. The wireless communication and energy transmission system based on adjustable frequency source as claimed in claim 1, wherein the rectifying circuit is composed of rectifying diodes.
6. The system of claim 1, wherein the filter circuit is configured to remove fundamental frequency components and higher harmonic components.
7. The system of claim 1, wherein the information demodulation circuit is configured to recover the signal at the transmitting end to obtain the desired digital information.
8. A method for operating a wireless communication and energy transmission system based on an adjustable frequency source according to any one of claims 1 to 7, comprising the following steps:
(1) a transmitting end:
1) the crystal oscillator generates a reference signal s1 with the frequency f 1;
2) a signal s1 is divided into two paths of signals s2 and s3 through a power divider, the frequencies of s2 and s3 are both f1, the power is divided into two parts according to a certain proportion, wherein the signal s2 is used as a reference source of a frequency doubling link, and the signal s3 is used as a reference source of a phase-locked loop or a DDS;
3) the signal s2 is amplified by an amplifier, then a frequency multiplier is used for obtaining a signal s4 with the frequency of f2, and the signal s4 filters interference signals such as higher harmonics, intermodulation signals and the like generated by the frequency multiplier through a filter to obtain a signal s5 with the frequency of f 2;
4) inputting a signal s3 into a phase-locked loop or a DDS, controlling the phase-locked loop or the DDS by using an FPGA (field programmable gate array) or a single chip microcomputer, and generating a signal s6 with adjustable frequency and adjustable frequency duration, wherein the frequency of any adjustable signal s6 is assumed to be f 3;
5) the signal s5 is sent to a mixer after being amplified by an amplifier, and is mixed with the signal s6 to generate a signal s7 with the frequency of f3+ f 2;
6) the signal s7 is filtered by a filter to remove some spurious signals generated by the mixer, and then a signal s8 with the frequency of f3+ f2 is output;
7) the signal s8 is amplified by the power amplifier to obtain a signal s9 with the output frequency of f3+ f2, and then the signal is transmitted by the antenna;
(2) receiving end:
1) after receiving a signal s9, an antenna divides the signal into two paths of signals s10 and s11 through a power divider;
2) s10 is input into a rectification circuit, the received alternating current is converted into direct current, and then fundamental frequency components and higher harmonic components are filtered out by a filter and then are transmitted to a load;
3) s11 is input to the information demodulation circuit to demodulate the corresponding information.
CN202210200082.9A 2022-03-02 2022-03-02 Wireless information and energy simultaneous transmission system based on adjustable frequency source and working method thereof Active CN114726395B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104158305A (en) * 2014-07-30 2014-11-19 华南理工大学 Energy and information synchronous transmission system based on self-adaptive magnetic coupling resonance matching
CN113965211A (en) * 2021-09-24 2022-01-21 电子科技大学长三角研究院(湖州) Novel transmitter device and signal transmitting method suitable for wireless information and energy simultaneous transmission system
CN113965213A (en) * 2021-09-24 2022-01-21 电子科技大学长三角研究院(湖州) Novel receiver device suitable for wireless information and energy simultaneous transmission system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104158305A (en) * 2014-07-30 2014-11-19 华南理工大学 Energy and information synchronous transmission system based on self-adaptive magnetic coupling resonance matching
CN113965211A (en) * 2021-09-24 2022-01-21 电子科技大学长三角研究院(湖州) Novel transmitter device and signal transmitting method suitable for wireless information and energy simultaneous transmission system
CN113965213A (en) * 2021-09-24 2022-01-21 电子科技大学长三角研究院(湖州) Novel receiver device suitable for wireless information and energy simultaneous transmission system

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