CN108964722A - Radio transmitting method - Google Patents
Radio transmitting method Download PDFInfo
- Publication number
- CN108964722A CN108964722A CN201810645954.6A CN201810645954A CN108964722A CN 108964722 A CN108964722 A CN 108964722A CN 201810645954 A CN201810645954 A CN 201810645954A CN 108964722 A CN108964722 A CN 108964722A
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- signal
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- amplifier
- wireless power
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000004044 response Effects 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001491807 Idaea straminata Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The present invention provides a kind of radio transmitting methods, comprising: is generated by the transmitting antenna in wireless power transmitter for the charging power in the near field in the magnetic field to be coupled to the magnetic field for being electrically coupled to the receiving antenna of acceptor device；Amplifier into wireless power transmitter provides electric power signal；Apply the first signal to transmitting antenna by amplifier；Detection is supplied to the variation of the electric power signal of amplifier in wireless power transmitter；The reception signal in response to the change in the electric power signal is generated in the wireless power transmitter；And the data communication from acceptor device is identified in signal and wireless power transmitter from receiving.
Description
Background technique
In general, each battery supply set of such as wireless telecom equipment (such as mobile phone) requires the charger of their own
And power supply, it is usually AC power supplies socket.When many equipment need to charge, this is difficult to handle.
The method for developing and using the inflight power transmission between transmitter and charging equipment.These are generally divided into two
Class.One is be coupled in transmitting antenna and receiving antenna on charging equipment based on plain wave emissions (also referred to as far-field radiation)
Between, it collects radiant power and it is rectified to charge to battery.Antenna has resonance length usually to improve coupling
Efficiency.This method is influenced by the fact, i.e. power coupling is with the distance between antenna rapid decrease.Therefore,
It is become difficult in reasonable distance (for example, > be greater than 1 to 2 meter) charging.Further, since system radiator plane wave, if do not led to
It crosses filtering and carries out suitable control, it is not intended to which radiation can interfere other systems.
Summary of the invention
The present invention is proposed in view of the above problems, and the purpose of the present invention is reduce between power transmission and signal transmission
Influence each other and at the same time realizing stable power transmission and signal transmission.
To solve the above problems, the present invention provides a kind of radio transmitting method, comprising: by the hair in wireless power transmitter
It penetrates antenna generation and is electrically coupled to receiver dress for the magnetic field antenna that the charge power in the near field by magnetic field is coupled to receiver
It sets；Amplifier into wireless power transmitter provides electric power signal；Apply the first signal to transmitting antenna by amplifier；?
Detection is supplied to the variation of the electric power signal of amplifier in wireless power transmitter；It generates and rings in the wireless power transmitter
The reception signal of the change in electric power signal described in Ying Yu；And come from identification in signal and wireless power transmitter is received
From the data communication of acceptor device.
In one example, the variation of sensed power includes the variation for the quantity of power that detection is drawn by receiving antenna.
In one example, the change for being supplied to the power signal of amplifier includes being presented to transmitting antenna and by receiving
The instruction that the impedance of receiving antenna caused by the operation of device equipment changes.
In one example, data communication includes the function of receiver device relevant to the load charging to receiver device
Rate demand.
In one example, data communication includes the asking of being adjusted of power demand level for the load that machine equipment is received in docking
It asks.
In one example, radio transmitting method further include: generate transmitting modulated signal.
In one example, modulated signal corresponds to the data communication that acceptor device is transmitted to via magnetic field.
In one example, radio transmitting method further include: when emitting modulated signal and being in first state by the first letter
Number be applied to transmitting antenna, and when emitting modulated signal and be in first state by second signal applied to transmitting antenna second
State.
Detailed description of the invention
In conjunction with attached drawing with reference to described and claimed, advantages and features of the invention will become more preferably to manage in more detail below
Solution, wherein the identical symbol logo of identical element, and wherein:
Fig. 1 is the rough schematic view of Wireless power transmission system.
Fig. 2 is the simplified block diagram of transmitter according to an exemplary embodiment of the present invention.
Fig. 3 is the simplified block diagram of receiver according to an exemplary embodiment of the present invention.
Specific embodiment
The best mode embodiment of the present invention is presented according to its preferred embodiment.However, the present invention is not limited to described
Embodiment, and it would be recognized by those skilled in the art that of the invention is permitted without departing from basic conception of the invention
More other embodiments are possible, and any this accommodation will also fall into the scope of the present invention.It is envisioned that its of the invention
His type and construction can be easily incorporated in the teachings of the present invention, and for clear and disclosed purpose rather than in order to
The limitation of range only shows and describes a specific construction.
"one" does not indicate the limitation of quantity to term herein, but indicates there is item mentioned by one or more
Mesh.
Fig. 1 shows the rough schematic view of Wireless power transmission system.Transmitter 104 includes oscillator 122, power amplifier
124 and filter and match circuit 126.Oscillator is configured as to believe in response to adjustment with the generation of desired frequency
Numbers 123 and be adjusted.Oscillator signal can be by having the power amplifier 124. of the amplification quantity in response to controlling signal 125 can
To include filter and match circuit 126 to filter out harmonic wave or other undesired frequencies and by the impedance of transmitter 104
It is fitted on transmitting antenna 114.
Receiver may include match circuit 132 and rectifier and switching circuit, to generate DC electric power output to electricity
Pond 136 is charged, as shown in Figure 3.1 or to be coupled to receiver equipment (not shown) power.Match circuit 132 can be by
Including receiver 108 is impedance-matched to receiving antenna 118.
Fig. 2 is the simplified block diagram of transmitter according to an exemplary embodiment of the present invention.Transmitter 200 includes transmit circuit
202 and transmitting antenna 204. in general, transmit circuit 202 by provide cause around transmitting antenna 204 generate near-field energy vibration
It swings direction of signal transmitting antenna 204 and RF power is provided.As an example, transmitter 200 can be grasped on 13.56MHz ISM band
Make.
Example transmission circuit 202 includes for the impedance (for example, 50 ohm) of transmit circuit 202 to be matched to transmitting day
The fixed impedance matching circuit 206 of line 204 and be configured to the low-pass filter (LPF) 208 that harmonic emissions are reduced to level with
Prevent self interference of the equipment for being coupled to receiver 108 (Fig. 1).Other embodiments may include different filter topologies knots
Structure, including but not limited to when transmitting other frequencies attenuation of specific frequencies notch filter, and may include adaptively hindering
Anti- matching, can be based on measurable transmission metric (such as current drain of the output power power amplifier of antenna or DC.
Transmit circuit 202 further comprises power amplifier 210, is configured as driving the RF signal determined by oscillator 212.Transmitting
Circuit may include discrete device or circuit, or can be made of integrated package.Exemplary RF function from transmitting antenna 204
Rate output can be in 2.5 watts of magnitude.
Transmit circuit 202 further includes processor 214, for being that specific receiver opens during launching phase (or duty ratio)
It is for adjusting the frequency of oscillator and electric for adjusting output power of the realization for the communication protocol of interaction with oscillator 212
It is flat to pass through their attached receivers with neighbouring equipment.
Transmit circuit 202 can also include load sense 216, for detecting the near field generated by transmitting antenna 204
The existence or non-existence of neighbouring active receiver.As an example, the monitoring of load sense 216 flows to power amplifier 210
Electric current, which is nearby present with or without source receiver by the near field generated by transmitting antenna 204, to be influenced.Processor 214 monitors
The detection of load variation on power amplifier 210 is used to determine whether that enabling oscillator 212 carrys out emitted energy to connect with active
Receive device communication.
Transmitting antenna 204 may be implemented as aerial band, wherein thickness, and width and metal types are selected as keeping low electricity
Resistance loss.In Conventional implementations, transmitting antenna 204 usually can be configured as with such as desk, cushion, lamp or other compared with
The larger structure of not portable configuration is associated.Therefore, transmitting antenna 204 will usually not need " to turn to " to have practical ruler
It is very little.The exemplary realization of transmitting antenna 204 can be " electricity is small " (that is, a part of wavelength), and be come by using capacitor
It limits resonance frequency and is tuned to the resonance under lower usable frequency.Transmitting antenna 204 diameter can it is bigger or
In the exemplary application of length in the case where being square ring (for example, 0.50 meter) relative to receiving antenna, transmitting antenna 204
It is not necessarily required to largely obtain reasonable capacitor.
Fig. 3 is the block diagram of receiver according to an embodiment of the present invention.Receiver 300 includes receiving circuit 302 and reception day
304. receiver 300 of line is additionally coupled to equipment 350 to provide it reception power.It should be noted that receiver 300 is shown
For outside equipment 350, but can be integrated into equipment 350.In general, energy is wirelessly traveled to receiving antenna 304,
Then it is coupled to equipment 350 by receiving circuit 302.
Receiving antenna 304 is tuned to frequency identical with transmitting antenna 204 (Fig. 2) or humorous close to identical frequency
Vibration.Receiving antenna 304 can with transmitting antenna 204 similarly design size, or can be based on the ruler of associated equipment 350
It is very little and differently determine size.For example, equipment 350 can be the portable electronic device with diameter or length dimension,
In such an example, receiving antenna 304 may be implemented as multiturn antenna to its length, (not show to reduce tuning capacitor
Capacitance out) and the impedance for increasing receiving antenna.As an example, receiving antenna 304 can be placed on the basic of device 350
It is electric between quantity and winding to maximize antenna diameter and to reduce ring the number of turns (that is, winding) of receiving antenna around circumference
Hold.
It receives circuit 302 and provides impedance matching to receiving antenna 304.Receiving circuit 302 includes for by the received RF of institute
306. power conversion circuit 306 of power conversion circuit that energy source is converted to the charging power used for device 350 includes RF-DC
Converter 308 and can also include DC to DC converter 310.RF to DC converter 308 will be received at receiving antenna 304
RF energy signal rectification be non-alternate power, and the RF energy signal of rectification is converted into and device by DC to DC converter 310
350 compatible energy potentials (for example, voltage).It is contemplated that various RF to DC converters, including partially and fully rectifier, adjusts
Save device, bridge, multiplier and linear and dc-dc converter.
Receiving circuit 302 can also include for receiving antenna 304 to be connected to circuit for power conversion 306 or is optionally used
In the switching circuit 312 for disconnecting circuit for power conversion 306.Receiving antenna 304 and the disconnection of circuit for power conversion 306 are not only stopped
Charging to equipment 350, but also " load " of transmitter 200 (Fig. 2) " seeing " is changed, such as it is explained more fully below
's.As described above, transmitter 200 includes load sense 216, the detection of load sense 216 is supplied to transmitter power
Fluctuation in the bias current of amplifier 210.Therefore, transmitter 200 has for determining when receiver is present in transmitter
Near field in mechanism.
When there are when multiple receivers 300 in the near field in transmitter, it may be necessary to time-multiplexed one or more receptions
The load and unloading of machine are so that other receivers can be more efficiently coupled to transmitter.Receiver can also be stealthy, to eliminate
The load of transmitter near coupling or reduction with other neighbouring receivers.This " unloading " of receiver is referred to herein as
" stealth ".In addition, being provided by this switching between receiver 300 controls and is detected by transmitter 200 unloading and load
From receiver 300 to the communication mechanism of transmitter 200, as being explained more fully below.In addition, agreement can with make it possible to
The switching that message is sent from receiver 300 to transmitter 200 is associated.For example, switch speed can be in 100 microseconds.
Receive the signaling detector and beacon circuit that circuit 302 can also include the energy fluctuation received for identification
314, it can correspond to the signalling information from transmitter to receiver.In addition, signaling and beacon circuit 314 can be also used for examining
It surveys the transmission of reduced RF signal energy (that is, beacon signal) and is rectified into reduced RF signal energy and be used to wake up without electricity
Or the nominal power of power consumption receives the circuit in circuit 302 to configure and to receive circuit 302 to carry out wireless charging.
Receiving circuit 302 further includes processor 316, for coordinating the processing of receiver 300 described herein, including to this
The control of the switching circuit 312 of text description.Hiding for receiver 300 can also occur when other events occur, including detection
The outside wired charging source (for example, wall type/USB power source) of charging power is provided to equipment 350.Stealth in addition to controlling and receiving machine
Outside, processor 316 can also monitor beacon circuit 314 also to determine beacon state and extract the message sent from transmitter.Place
Reason device 316 can also adjust DC-DC converter 310 to improve performance.
To solve the above problems, the present invention provides a kind of radio transmitting method, comprising: by the hair in wireless power transmitter
It penetrates antenna generation and is electrically coupled to receiver dress for the magnetic field antenna that the charge power in the near field by magnetic field is coupled to receiver
It sets；Amplifier into wireless power transmitter provides electric power signal；Apply the first signal to transmitting antenna by amplifier；?
Detection is supplied to the variation of the electric power signal of amplifier in wireless power transmitter；It generates and rings in the wireless power transmitter
The reception signal of the change in electric power signal described in Ying Yu；And come from identification in signal and wireless power transmitter is received
From the data communication of acceptor device.
In one example, the variation of sensed power includes the variation for the quantity of power that detection is drawn by receiving antenna.
In one example, the change for being supplied to the power signal of amplifier includes being presented to transmitting antenna and by receiving
The instruction of the impedance variations of receiving antenna caused by the operation of device equipment.
In one example, data communication includes the function of receiver device relevant to the load charging to receiver device
Rate demand.
In one example, data communication includes the asking of being adjusted of power demand level for the load that machine equipment is received in docking
It asks.
In one example, radio transmitting method further include: generate transmission modulated signal.
In one example, modulated signal corresponds to the data communication that receiver device is transmitted to via magnetic field.
In one example, radio transmitting method further include: when emitting modulated signal and being in first state by the first letter
Number be applied to transmitting antenna, and when emitting modulated signal and be in first state by second signal applied to transmitting antenna second
State.
Although it have been described that being presently believed to be the content of the preferred embodiment of the present invention, it should be understood that,
Various modifications can be made to it, and appended claims are intended to cover all such modifications, such as autumn of the invention
In true spirit and range.
The foregoing description of the particular embodiment of the present invention has been presented for the purpose of illustration and description.They are not purport
Disclosed precise forms are limited in exhaustion or by the present invention and application method.Obviously, according to the above instruction, it is many modification and
Variation is possible.In order to best explain the principle and its practical application of the present invention, and thus selection and description embodiment are
Enable others skilled in the art most preferably using the present invention and with being suitable for the various of expected special-purpose
The various embodiments of modification.It should be understood that without departing substantially from the spirit or scope of claim of the invention, it can
To consider the omission or substitution of various equivalents, because situation may imply or provide makeshift, but it is intended to the application
Or implement.
Claims (8)
1. a kind of radio transmitting method, comprising:
It is generated by the transmitting antenna in wireless power transmitter for coupling the charging power in the near field in the magnetic field to
It is electrically coupled to the magnetic field of the receiving antenna of acceptor device；
Amplifier into wireless power transmitter provides electric power signal；
Apply the first signal to transmitting antenna by amplifier；
Detection is supplied to the variation of the electric power signal of amplifier in wireless power transmitter；In the wireless power transmitter
Generate the reception signal in response to the change in the electric power signal；
The data communication from acceptor device is identified in signal and wireless power transmitter from receiving.
2. radio transmitting method according to claim 1, wherein the variation for detecting the power signal includes detection by institute
State the variation for the quantity of power that receiving antenna is drawn.
3. radio transmitting method according to claim 1, wherein be supplied to the change of the power signal of the amplifier
Changing includes the impedance change for being presented to the transmitting antenna and the receiving antenna as caused by the operation of the acceptor device
The instruction of change.
4. radio transmitting method according to claim 1, wherein the data communications packets include the acceptor device with
To the relevant power demand of load charging of the acceptor device.
5. radio transmitting method according to claim 1, wherein the data communication includes to the acceptor device
The request that the power demand level of load is adjusted.
6. radio transmitting method according to claim 1, further includes: generate transmitting modulated signal.
7. radio transmitting method according to claim 6, wherein the modulated signal, which will correspond to, to be passed via the magnetic field
It is sent to the data communication of the acceptor device.
8. radio transmitting method according to claim 6, further includes: when the transmitting modulated signal is in first state
First signal is applied to the transmitting antenna, and when the transmitting modulated signal is in the second state by the second letter
Number be applied to the transmitting antenna.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645954.6A CN108964722A (en) | 2018-06-21 | 2018-06-21 | Radio transmitting method |
| ZA2018/04798A ZA201804798B (en) | 2018-06-21 | 2018-07-18 | Wireless transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645954.6A CN108964722A (en) | 2018-06-21 | 2018-06-21 | Radio transmitting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108964722A true CN108964722A (en) | 2018-12-07 |
Family
ID=64491749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810645954.6A Withdrawn CN108964722A (en) | 2018-06-21 | 2018-06-21 | Radio transmitting method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108964722A (en) |
| ZA (1) | ZA201804798B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113302090A (en) * | 2019-01-12 | 2021-08-24 | 奥托立夫开发公司 | Integrated electromagnetic and optical devices for wireless power transfer and data communication |
-
2018
- 2018-06-21 CN CN201810645954.6A patent/CN108964722A/en not_active Withdrawn
- 2018-07-18 ZA ZA2018/04798A patent/ZA201804798B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113302090A (en) * | 2019-01-12 | 2021-08-24 | 奥托立夫开发公司 | Integrated electromagnetic and optical devices for wireless power transfer and data communication |
| CN113302090B (en) * | 2019-01-12 | 2024-01-02 | 奥托立夫开发公司 | Integrated electromagnetic and optical device for wireless power transfer and data communication |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201804798B (en) | 2019-04-24 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181207 |