CN206193873U - Radio frequency supply circuit and hyperfrequency passive tag - Google Patents
Radio frequency supply circuit and hyperfrequency passive tag Download PDFInfo
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- CN206193873U CN206193873U CN201621025436.7U CN201621025436U CN206193873U CN 206193873 U CN206193873 U CN 206193873U CN 201621025436 U CN201621025436 U CN 201621025436U CN 206193873 U CN206193873 U CN 206193873U
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Abstract
The utility model provides a radio frequency supply circuit and hyperfrequency passive tag, wherein, which comprises a housin, the charge pump, the charge pump includes: radio frequency power input end, a DC output and the 2nd DC output, wherein, radio frequency power input end is connected to hyperfrequency passive tag's antenna to receive the radio frequency energy among the ultrahigh frequency signal, a DC output with the 2nd DC output is used for respectively exporting will first DC voltage and second DC voltage that radio frequency energy conversion back generated, wherein, the second DC voltage is less than first DC voltage. Through the technical scheme of the utility model, can be more simple, high -efficiently owing to concatenate the voltage consumption that voltage stabilizing circuit etc. Produced in eliminating the correlation technique to multiple power supply voltage can be exported, in order to satisfy different user demands, the reduction consumption that lands is shown.
Description
Technical field
The utility model is related to less radio-frequency and electronic label technology field, in particular to a kind of radio frequency powered electricity
Road and ultrahigh-frequency passive electronic tag.
Background technology
At present, in wireless charging technical field, there are various well known skills that energy is transmitted by radio frequency electromagnetic mode
Art means, typical case's application include wireless charging mobile device and passive RFID (Radio Frequency Identification,
Radio frequency identification) chip etc..Specifically, when using non-contact type wireless charging charging of mobile devices, (stood) by wireless charging radio station
RF energy is provided, and in passive RFID chips application, then provides RF energy by read write line or challenger, further,
Radio frequency electromagnetic is received and the direct-current working volts needed for rectified rear generation by antenna of receiving device.
As shown in figure 1, being passive ultra-high frequency RFID label, it includes antenna and RFID label chip, and the antenna is generally
Dipole antenna or dipole antenna mutation, general by printing or being etched on antenna substrate, RFID label chip passes through
Wired binding or packaged type are connected to antenna, and are passive chip, the power supply not comprising any such as battery form, it is necessary to
By receiving radio frequency beam and the voltage needed for rectification formation work that reader or challenger send.And Fig. 2 is shown in Fig. 1
The structural representation of RFID label chip, wherein Uhf Rectifier connect antenna end, for the hyperfrequency electricity for receiving antenna
Magnetic wave (i.e. RF energy) rectification generates direct current supply voltage Vdd, to be supplied to logic circuit, the EEPROM of RFID label chip
(Electrically Erasable Programmable Read-Only Memory, EEPROM),
The circuits such as crystal oscillator, electrification reset circuit work；And use shunt regulator straight to what is provided for RFID label chip
Stream supply voltage Vdd carries out voltage stabilizing.
Furthermore it is also possible to connect one or more series voltage regulators after Uhf Rectifier, with reception device such as
The different pieces such as numerical portion, analog portion and NVM (NonVolatile Memory, nonvolatile memory) provide specific
Operating voltage.As shown in figure 3, being that the structure that a RFID label chip for series voltage regulator is connected after Uhf Rectifier is shown
Meaning, to produce direct current supply voltage Vdd2, be used to be powered to the logic circuit and oscillator of RFID label chip, and Vdd2 electricity
Magnitude of voltage of the pressure value less than Vdd；Furthermore it is also possible to by the modes such as diode drop, emitter stage or source following transistor come
Produce second source voltage Vdd2.However, in these existing applications, due to having concatenated mu balanced circuit, existing such as series voltage stabilizing
Device consumes power supply in itself, and different power supplys needs to need the shortcomings of individually being decoupled and ground between.
Further, because the distance between received signal power and receiver and emitter square are inversely proportional, so receiving
General very faint, the generally less than -20dBm of radiofrequency signal that device is received, then, if using simple half-wave rectifier,
Full-wave rectifier and bridge rectifier, cannot generally obtain required operating voltage from faint radiofrequency signal, then be understanding
The certainly problem, the radio frequency powered circuit of general passive ultra-high frequency RFID label can use charge pump, as shown in figure 4, charge pump connects
It is connected to antenna and produces supply voltage Vdd, the Vdd is further through decoupling capacitor CLRealized with shunt regulator anti-interference and steady
Pressure, i.e., Uhf Rectifier part uses charge pump, such as Dixon (Dickson) charge pump, as shown in figure 5, Dickson is electric
Lotus pump includes chain of diodes (or transistor), and every one-level of charge pump is constituted by two diodes, and antenna passes through coupling
Close capacitance connection to two concatenation diodes in the middle of, and the output of every one-level of charge pump it is each connect a storage capacitor, from
And producing ratio input signal voltage signal higher, and upper level output as the reference input of next stage, so, pass through
Multistage boosting produces final output voltage Vdd.
However, there are the various shortcomings such as the boosting limit, body effect compensation in Dickson charge pump, at present generally using different
The variant form of the Dickson charge pump of form, to make up various defects, it would however also be possible to employ similar with Dickson charge pump
The charge pump circuit of the forms such as bridge rectifier heap.However, these circuit structures are all to produce single-stage institute by multi-stage superimposed
Inaccessiable high voltage, circuit structure is complicated.
If in addition, the logic circuit of RFID label chip is operated under relatively low operating voltage, power consumption can be reduced, and patrol
The power consumption of volume circuit generally square is directly proportional to operating voltage, so reducing operating voltage can significantly reduce power consumption.So
And, this province of series voltage regulator circuit as shown in Figure 3 will also consume electric energy, cause to improve effect ratio in terms of power utilization efficiency
Expection is small.For example, if the supply voltage of logic circuit is Vdd, average current consumption is I1When, its power consumption is Vdd
×I1, and the supply voltage for working as logic circuit is Vdd2, average current consumption is I2When, its power consumption is Vdd2 × I2, wherein,
Vdd2<Vdd and I2<I1, but now the power consumption amounts of logic circuit and series voltage regulator are Vdd × I2, then (Vdd-Vdd2) ×
I2Part just wastes.
Therefore, how can be exported while in eliminating correlation technique due to the voltage consumption of concatenation mu balanced circuit generation
Various supply voltages, to meet different use demands, significantly decrease power consumption as technical problem urgently to be resolved hurrily.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art or correlation technique.
Therefore, a purpose of the present utility model is to propose a kind of new radio frequency powered circuit, can with it is simpler,
Efficiently due to the voltage consumption of the generations such as concatenation mu balanced circuit in correlation technique is eliminated, and various power supply electricity can be exported
Pressure, to meet different use demands, significantly decreases power consumption.
Another purpose of the present utility model is to propose a kind of ultra-high-frequency passive electricity with the radio frequency powered circuit
Subtab.
To realize above-mentioned at least one purpose, according to first aspect of the present utility model, it is proposed that a kind of radio frequency powered electricity
Road, including：Charge pump；And the charge pump includes：RF energy input, the first DC output end and the second direct current output
End, wherein, the RF energy input is connected to the antenna of the ultrahigh-frequency passive electronic tag, to receive hyperfrequency letter
RF energy in number, first DC output end and second DC output end are respectively used to output by the radio frequency energy
The first DC voltage and the second DC voltage generated after amount conversion, wherein, second DC voltage is straight less than described first
Stream voltage.
According to radio frequency powered circuit of the present utility model, only can be by the day of ultrahigh-frequency passive electronic tag by charge pump
The RF energy that line is received is converted into the first DC voltage and the second DC voltage respectively, supplies ultrahigh-frequency passive electronic tag
Use, wherein the second DC voltage is less than the first DC voltage, i.e., it is to be capable of achieving to export many by simpler circuit structure
Supply voltage is planted, to meet different use demands, while eliminating because concatenation mu balanced circuit (such as voltage-stablizer) etc. is produced
Voltage consumption, significantly reduce power consumption.
Radio frequency powered circuit according to above-described embodiment of the present utility model, can also have following technical characteristic：
In the above-mentioned technical solutions, it is preferable that the charge pump includes that the multistage Dickson charge pumps being connected in series are basic
Unit, and first DC output end is from the afterbody Dickson in the multistage Dickson charge pumps elementary cell
The output end of charge pump elementary cell is drawn, and second DC output end is from the multistage Dickson charge pumps elementary cell
In other intergrade Dickson charge pump elementary cells in addition to the afterbody Dickson charge pump elementary cell it is defeated
Go out end to draw.
In the technical scheme, the charge pump for being used is preferably Dickson charge pump, and it includes multistage Dickson
Charge pump elementary cell, and the VD different in order to obtain various pressure values, then control the multistage in the charge pump
The output end of the afterbody in Dickson charge pump elementary cell exports the output end output of the first DC voltage, intergrade
Second DC voltage, i.e., draw the first DC output end, drawn from the output end of the intergrade from the output end of the afterbody
Second DC output end, such as, if charge pump includes 8 grades of Dickson charge pump elementary cells, the first VD can
Exported with from the 8th grade of output end of Dickson charge pump elementary cell, and the second VD then can be from the 6th grade
The output end output of Dickson charge pump elementary cell, due to the process of the boosting that charge pump is realized, then obviously from intergrade the
Second DC voltage of 6 grades of output end outputs of Dickson charge pump elementary cell is less than from the 8th grade of Dickson of afterbody
The output end of charge pump elementary cell.In this way, using by way of directly being exported from charge pump intergrade, it is steady to substitute series connection
Piezoelectricity pressure or simple diode drop circuit etc., so that obtain the second relatively low DC voltage be powered, can be effectively
Circuit consumption is reduced, so as to reduce supply voltage loss.
In the above-described embodiments, the charge pump for being used can be simple Dickson charge pump, or take partially
Put improved Dickson charge pump after compensation or body effect compensation.
In any of the above-described technical scheme, it is preferable that also include：First diode, it is straight that its positive pole is connected to described first
Stream output end, negative pole are connected to second DC output end.
In the technical scheme, one or many can also be connected between the first DC output end and the second DC output end
Individual first diode, specifically, the positive pole of the first diode is connected to the first DC output end of output HIGH voltage, negative pole connection
To the second DC output end for exporting low-voltage, to cause that the second DC voltage is fixed on the magnitude of voltage forced down than the first direct current
On；And the circuit consumption of first diode is very small, so that loss of power very little, and when the second DC output end
When needing to export more electric currents than usual, can be obtained by first diode.
In any of the above-described technical scheme, it is preferable that also include：Shunt regulator, is connected to first direct current output
End, for carrying out voltage stabilizing to first DC voltage and second DC voltage.
In the technical scheme, realized to the first DC voltage by the shunt regulator for being connected to the first DC output end
With the pressure stabilization function of the second DC voltage, specifically, when the first DC voltage exceed shunt regulator voltage when, then now simultaneously
Connection voltage-stablizer starts to absorb electric current from charge pump, so as to reduce the power supplying efficiency of charge pump, to realize to from the centre of charge pump
The pressure stabilization function of the second DC voltage of level output, to provide the supply voltage of stabilization.
In any of the above-described technical scheme, it is preferable that also include：First decoupling capacitor, is connected to first direct current defeated
Go out end, and it is in parallel with the shunt regulator；Second decoupling capacitor, is connected to second DC output end.
In the technical scheme, by straight with output second in the first DC output end for exporting the first DC voltage respectively
The second DC output end for flowing voltage is connected to a decoupling capacitor, is ensuring to provide the same of relatively stable supply voltage
When, it is also possible to jamproof effect is played, that is, reduces the noise that other elements are coupled to DC voltage output end, filter output
Interference in DC voltage, so as to reduce probability of the downstream components by the interference effect in DC voltage.
In any of the above-described technical scheme, it is preferable that every grade of Dickson charge pump elementary cell include being connected in series the
After two diodes and the 3rd diode, and the antenna access RF energy input, it is connected to by coupled capacitor
Second diode of every grade of Dickson charge pump elementary cell and the centre of the 3rd diode, the coupling
The quantity of electric capacity is equal with the quantity of the multistage Dickson charge pumps elementary cell.
In the technical scheme, antenna accesses RF energy input, and be input into RF energy to every by coupled electric capacity
Level Dickson charge pump elementary cell, by the coupled capacitor isolated DC and to remove low-frequency disturbance, specifically, every grade
Dickson charge pump elementary cell includes two diodes being connected in series, and antenna is connected respectively through each coupled capacitor
To every grade of centre of the two of Dickson charge pump elementary cell diodes.
In any of the above-described technical scheme, it is preferable that the charge pump also includes：Multiple storage capacitors, the multiple storage
Energy electric capacity is connected respectively to the respective output end of multistage Dickson charge pumps elementary cell.
In the technical scheme, an energy storage electricity is connected by every grade of output end of Dickson charge pump elementary cell
Hold, so that every grade of producing ratio input direct voltage output high, and the output of upper level Dickson charge pump elementary cell can be with
As the input of next stage Dickson charge pump elementary cell, in this way, being boosted by multistage Dickson charge pumps elementary cell
VD higher can be produced after effect.
In any of the above-described technical scheme, it is preferable that second diode and the 3rd diode include：Schottky
Diode.
In the technical scheme, the diode of each pair second and the three or two pole in every grade of Dickson charge pump elementary cell
Pipe can be the Schottky diode that switching frequency is high, forward voltage drop is low, and 0.4V or so can be obtained by Schottky diode
Forward conduction voltage drop；It is of course also possible to be not limited to Schottky diode for other kinds of diode.
In any of the above-described technical scheme, it is preferable that every grade of Dickson charge pump elementary cell, it uses CMOS
Transistor replaces second diode and/or the 3rd diode.
In the technical scheme, the in every grade of Dickson charge pump elementary cell can be replaced using CMOS transistor
One or more in two diodes and the 3rd diode.
According to second aspect of the present utility model, it is proposed that a kind of ultrahigh-frequency passive electronic tag, including：Antenna, label
Radio frequency powered circuit any one of chip and as above technical scheme, wherein, the antenna is connected to the radio frequency powered
The RF energy input of circuit, first DC voltage and second direct current of the radio frequency powered circuit output
Voltage is used to be powered for the label chip.
In this embodiment, there is the ultrahigh-frequency passive electronic tag radio frequency as above any one of technical scheme to supply
All beneficial effects of circuit, sum it up, by above-mentioned radio frequency powered circuit, can with it is simpler, efficiently eliminating
Due to the voltage consumption of the generations such as concatenation mu balanced circuit in correlation technique, and various supply voltages can be exported, to meet difference
Use demand, significantly decrease power consumption.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Fig. 1 shows the structural representation of the ultra-high frequency RFID label in correlation technique；
Fig. 2 shows the chip structure schematic diagram of the ultra-high frequency RFID label of the first embodiment in correlation technique；
Fig. 3 shows the chip structure schematic diagram of the ultra-high frequency RFID label of the second embodiment in correlation technique；
Fig. 4 shows the principle schematic of the radio frequency powered circuit of the ultra-high frequency RFID label in correlation technique；
Fig. 5 shows the principle schematic of the charge pump in the radio frequency powered circuit in correlation technique；
Fig. 6 shows the schematic block diagram of the radio frequency powered circuit according to embodiment of the present utility model；
Fig. 7 shows the schematic block diagram of the charge pump shown in Fig. 6；
Fig. 8 shows the schematic block diagram of the Dickson charge pump elementary cell shown in Fig. 7；
Fig. 9 shows the principle schematic of the radio frequency powered circuit according to embodiment of the present utility model；
Figure 10 shows the principle schematic of the charge pump in the radio frequency powered circuit according to embodiment of the present utility model；
Figure 11 shows the chip structure schematic diagram according to the ultra-high frequency RFID label of embodiment of the present utility model.
Specific embodiment
In order to above-mentioned purpose of the present utility model, feature and advantage can be more clearly understood that, below in conjunction with the accompanying drawings and tool
Body implementation method is further described in detail to the utility model.It should be noted that in the case where not conflicting, this Shen
Feature in embodiment please and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, but, this practicality
It is new to be different from other modes described here using other to implement, therefore, protection domain of the present utility model is simultaneously
Do not limited by following public specific embodiment.
Fig. 6 shows the schematic block diagram of the radio frequency powered circuit according to embodiment of the present utility model.
As shown in fig. 6, the radio frequency powered circuit 10 according to embodiment of the present utility model, including：Charge pump 102；And
The charge pump 102 includes：RF energy input 1020, the first DC output end 1022 and the second DC output end 1024,
As shown in Figure 7.
Wherein, the RF energy input 1020, is connected to the antenna of the ultrahigh-frequency passive electronic tag, to receive
RF energy in ultra-high frequency signal, first DC output end 1022 and second DC output end 1024 are respectively used to
The first DC voltage and the second DC voltage generated after the RF energy is changed are exported, wherein, second direct current
Pressure is less than first DC voltage.
According to radio frequency powered circuit 10 of the present utility model, only can be by ultra-high-frequency passive electronics mark by charge pump 102
The RF energy that the antenna of label is received is converted into the first DC voltage and the second DC voltage, supply ultra-high-frequency passive electricity respectively
Subtab is used, wherein the second DC voltage is less than the first DC voltage, i.e., it is to be capable of achieving by simpler circuit structure
Various supply voltages are exported, to meet different use demands, while eliminating due to concatenation mu balanced circuit (such as voltage-stablizer)
Deng the voltage consumption of generation, power consumption is significantly reduced.
In the above-described embodiments, further, the charge pump 102 includes the multistage Dickson charge pumps being connected in series
Elementary cell 1026, and first DC output end 1022 is from the multistage Dickson charge pumps elementary cell 1026
The output end of afterbody Dickson charge pump elementary cell 1026 draw, second DC output end 1024 is from described
Its in multistage Dickson charge pumps elementary cell 1026 in addition to the afterbody Dickson charge pump elementary cell 1026
The output end of his intergrade Dickson charge pump elementary cell 1026 is drawn.
In this embodiment, the charge pump 102 for being used is preferably Dickson charge pump 102, and it includes multistage
Dickson charge pump elementary cell 1026, and the VD different in order to obtain various pressure values, then control in the electric charge
The output end of the afterbody in the multistage Dickson charge pumps elementary cell 1026 of pump 102 exports the first DC voltage, centre
The output end of level exports the second DC voltage, i.e., from the output end of the afterbody draw the first DC output end 1022, from this
The output end of intergrade draws the second DC output end 1024, such as, if charge pump 102 includes that 8 grades of Dickson charge pumps are basic
Unit 1026, then the first VD can from the output of the output end of the 8th grade of Dickson charge pump elementary cell 1026,
And the second VD then can be from the 6th grade of output end output of Dickson charge pump elementary cell 1026, due to electric charge
The process of the boosting that pump 102 is realized, then the output end obviously from the 6th grade of Dickson charge pump elementary cell 1026 of intergrade is defeated
The second DC voltage for going out is less than from the 8th grade of output end of Dickson charge pump elementary cell 1026 of afterbody.In this way, logical
Cross using from by the way of the intergrade of charge pump 102 directly output, to substitute series voltage stabilizing voltage or simple diode drop electricity
Road etc., so as to obtain the second relatively low DC voltage be powered, can be effectively reduced circuit consumption, so as to reduce power supply electricity
Crushing consumes.
In the above-described embodiments, the charge pump 102 for being used can be simple Dickson charge pump 102, or
Take improved Dickson charge pump 102 after bias compensation or body effect compensation.
In any of the above-described embodiment, the radio frequency powered circuit 10 also includes：First diode 104, the connection of its positive pole
Second DC output end 1024 is connected to first DC output end 1022, negative pole.
In this embodiment, one can also be connected between the first DC output end 1022 and the second DC output end 1024
Individual or multiple first diodes 104, specifically, the first direct current that the positive pole of the first diode 104 is connected to output HIGH voltage is defeated
Go out the second DC output end 1024 that end 1022, negative pole is connected to output low-voltage, to cause that the second DC voltage is fixed on ratio
On the magnitude of voltage that first direct current is forced down；And the circuit consumption of first diode 104 is very small, so that the loss of power
Very little, and when the second DC output end 1024 needs output more electric currents than usual, can be by first diode
104 obtain.
In any of the above-described embodiment, the radio frequency powered circuit 10 also includes：Shunt regulator 106, is connected to described
First DC output end 1022, for carrying out voltage stabilizing to first DC voltage and second DC voltage.
In this embodiment, by be connected to the shunt regulator 106 of the first DC output end 1022 realize it is straight to first
The pressure stabilization function of stream voltage and the second DC voltage, specifically, when the first DC voltage exceedes the voltage of shunt regulator 106
When, then now shunt regulator 106 starts to absorb electric current from charge pump 102, so that the power supplying efficiency of charge pump 102 is reduced, with
The pressure stabilization function to the second DC voltage exported from the intergrade of charge pump 102 is realized, to provide the supply voltage of stabilization.
In any of the above-described embodiment, the radio frequency powered circuit 10 also includes：First decoupling capacitor 108 and the second decoupling
Electric capacity 110.
Wherein, first decoupling capacitor 108 is connected to first DC output end 1022, and with the parallel voltage-stabilizing
Device 106 is in parallel；Second decoupling capacitor 110 is connected to second DC output end 1024.
In this embodiment, by exporting the first DC output end 1022 of the first DC voltage and output second respectively
Second DC output end 1024 of DC voltage is connected to a decoupling capacitor, is ensuring to provide relatively stable supply voltage
While, it is also possible to jamproof effect is played, that is, reduces the noise that other elements are coupled to DC voltage output end, filtered defeated
Interference in the DC voltage for going out, so as to reduce probability of the downstream components by the interference effect in DC voltage.
As shown in figure 8, in any of the above-described embodiment, it is preferable that every grade of Dickson charge pump elementary cell 1026 includes
The second diode 10262 being connected in series and the 3rd diode 10264, and the antenna access the RF energy input
After 1020, every grade of the two or two pole of the Dickson charge pump elementary cell 1026 is connected to by coupled capacitor 1030
The centre of pipe 10262 and the 3rd diode 10264, the quantity of the coupled capacitor 1030 and the multistage Dickson electricity
The quantity of lotus pump elementary cell 1026 is equal.
In this embodiment, antenna accesses RF energy input 1020, and RF energy is being passed through into coupled capacitor
1030 inputs to every grade of Dickson charge pump elementary cell 1026, by the isolated DC of coupled capacitor 1030 and to remove low
Frequency is disturbed, and specifically, every grade of Dickson charge pump elementary cell 1026 is including two diodes being connected in series, and antenna
Every grade of centre of the two of Dickson charge pump elementary cell 1026 diodes is respectively connecting to through each coupled capacitor 1030.
Wherein, each pair the second diode 10262 and the 3rd diode in every grade of Dickson charge pump elementary cell 1026
10264 can be the Schottky diode that switching frequency is high, forward voltage drop is low, and it is left to obtain 0.4V by Schottky diode
Right forward conduction voltage drop；It is of course also possible to be not limited to Schottky diode for other kinds of diode.
Furthermore, it is possible to replace the two or two pole in every grade of Dickson charge pump elementary cell 1026 using CMOS transistor
One or more in the diode 10264 of pipe 10262 and the 3rd.
In any of the above-described embodiment, the charge pump 102 also includes：Multiple storage capacitors 1028, the multiple energy storage
Electric capacity 1028 is connected respectively to the respective output end of the multistage Dickson charge pumps elementary cell 1026.
In this embodiment, an energy storage is connected by every grade of output end of Dickson charge pump elementary cell 1026
Electric capacity 1028, so that every grade of input of producing ratio direct voltage output high, and upper level Dickson charge pump elementary cell 1026
Output can as the input of next stage Dickson charge pump elementary cell 1026, in this way, pass through multistage Dickson electric charges
VD higher can be produced after the boosting of pump elementary cell 1026.
The principle of the radio frequency powered circuit 10 described in any of the above-described embodiment is illustrated as shown in figure 9, wherein, charge pump
102 principle is illustrated as shown in Figure 10.
As shown in figure 9, the RF energy input 1020 of the charge pump 102 of radio frequency powered circuit 10 is connected with antenna, electricity
Lotus pump 102 produces two supply voltages Vdd and Vdd2, respectively by the first DC output end 1022 and the second DC output end 1024
Output, and Vdd connects the first decoupling capacitor 108, Vdd2 connects the second decoupling capacitor 110, and it is straight to be connected to first using one
Two supply voltages of shunt regulator 106 pair for flowing output end 1022 carry out voltage stabilizing.
As shown in Figure 10, in the present embodiment, charge pump 102 includes level Four Dickson charge pump elementary cell 1026, and
The series can be any number of stages, such as 8 or 16 grades, it would however also be possible to employ the charge pump 102 of any other form.Included per one-level
Two diodes, i.e. the second diode 10262 and the 3rd diode 10264, antenna are connected respectively by a coupled capacitor 1030
It is connected between two diodes, wherein diode can use Schottky diode, diode connection nmos pass transistor or two
Pole pipe interconnection system nature nmos pass transistor, as shown in Figure 10, the first DC voltage is substantially single by afterbody Dickson charge pump
Unit 1026 is exported, and the second DC voltage is exported by third level Dickson charge pump elementary cell 1026.Further, positive pole connects
First DC voltage, negative pole meet the forward voltage drop about 0.4V of the first diode 104 of the second DC voltage, such as diode connection
Nmos pass transistor, the electric current of the second DC voltage is main by third level Dickson charge pump elementary cell in most cases
1026 outputs are provided, and under normal operating conditions, only very small part electric current is exported from the first diode 104, so that should
First diode 104 consumes low-down electrical source consumption.
Further, if comprising eight grades of charge pumps of Dickson charge pump elementary cell 1,026 102, then second is straight
Stream voltage can be exported from such as the 6th grade, and comprising 16 grades of charge pumps of Dickson charge pump elementary cell 1,026 102
In, the second DC voltage can be exported from the 12nd grade or other levels.
By above-described embodiment, the energy loss that serial regulating circuit etc. brings can be effectively eliminated, and due to electric charge
The electric current of the most rear class (or what behind the second DC voltage) of pump 102 reduces so that the circuit of Partial charge pump 102 work effect
Rate is higher；And because the first diode 104 defines the pressure drop about 0.4V between the first DC voltage and the second DC voltage,
First DC voltage and the second DC voltage use a shunt regulator 106, then when the first DC voltage exceedes parallel voltage-stabilizing
During the voltage of device 106, shunt regulator 106 will start to absorb electric current from charge pump 102, so as to reduce the entirety of charge pump 102
Efficiency, so as to realize the pressure stabilization function to the second DC voltage.
In the other embodiment of radio frequency powered circuit of the present utility model, the charge pump can include that at least three is straight
Stream output end, the multistage Dickson charge pumps that can be specifically included according to actual power demand and the charge pump are substantially single
Depending on quantity etc. of unit, wherein, a DC output end at least three DC output end is from multistage Dickson electric charges
The output end of the afterbody Dickson charge pump elementary cell of pump elementary cell is drawn, and at least three direct current output
Other remaining DC output ends in end are respectively from multistage Dickson charge pumps elementary cell except afterbody Dickson electricity
The output end of other intergrade Dickson charge pump elementary cells outside lotus pump elementary cell is drawn, more various to realize
The direct current output of change, meets more diversified need for electricity.
As one embodiment of the present utility model, above-mentioned radio frequency powered circuit can be applied in ultra-high-frequency passive electronics
In label, specifically, the ultrahigh-frequency passive electronic tag also includes antenna and label chip, then wherein, the antenna is connected to
The RF energy input of the radio frequency powered circuit, first DC voltage of the radio frequency powered circuit output and
Second DC voltage is used to be powered for the label chip.
In this embodiment, the ultrahigh-frequency passive electronic tag has the radio frequency powered being performed as described above any one of example
All beneficial effects of circuit, sum it up, by above-mentioned radio frequency powered circuit, can with it is simpler, efficiently eliminating phase
Due to the voltage consumption of the generations such as concatenation mu balanced circuit in the technology of pass, and various supply voltages can be exported, it is different to meet
Use demand, significantly decreases power consumption.
And the concrete structure of the label chip in above-described embodiment is illustrated as shown in figure 11, wherein Uhf Rectifier is
Charge pump, altogether export two supply voltages, the first DC voltage Vdd and the second DC voltage Vdd2, the two is directly by superelevation
Frequency rectifier is produced, without extra series voltage regulator, wherein, Vdd2 is used to be powered to logic circuit and oscillator, Vdd
It is used to be powered to electrification reset circuit and EEPROM.In the present embodiment, EEPROM needs 1.1V to work, and oscillator and logic electricity
Road needs the operating on low voltage of 0.7V, i.e., define the first DC voltage Vdd and second by the first diode of radio frequency powered circuit
Pressure drop between DC voltage Vdd2 is 0.4V, consolidates the difference between the second DC voltage Vdd2 and the first DC voltage Vdd
It is fixed, such Curve guide impeller, hence it is evident that reduce electrical source consumption, and when logic circuit needs to consume more electric currents than usual,
Can be obtained by the diode.Meanwhile, logic circuit and oscillator are by two decoupling capacitors (i.e. in radio frequency powered circuit
One decoupling capacitor and the second decoupling capacitor) and decoupling is efficiently accomplished jointly.
The technical solution of the utility model is described in detail above in association with accompanying drawing, by the technical solution of the utility model,
Can with it is simpler, efficiently in correlation technique is eliminated due to the voltage consumption of the concatenation generation such as mu balanced circuit, and can be defeated
Go out various supply voltages, to meet different use demands, significantly decrease power consumption.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of radio frequency powered circuit, for being powered for ultrahigh-frequency passive electronic tag, it is characterised in that including：Charge pump；With
And
The charge pump includes：RF energy input, the first DC output end and the second DC output end, wherein,
The RF energy input, is connected to the antenna of the ultrahigh-frequency passive electronic tag, with receiving ultra-high frequency signal
RF energy,
First DC output end and second DC output end are respectively used to raw after the RF energy is changed in output
Into the first DC voltage and the second DC voltage, wherein, second DC voltage be less than first DC voltage.
2. radio frequency powered circuit according to claim 1, it is characterised in that the charge pump includes the multistage being connected in series
Dickson charge pump elementary cell, and
First DC output end is from the afterbody Dickson electric charges in the multistage Dickson charge pumps elementary cell
The output end of pump elementary cell is drawn,
Second DC output end removes the afterbody Dickson from the multistage Dickson charge pumps elementary cell
The output end of other intergrade Dickson charge pump elementary cells outside charge pump elementary cell is drawn.
3. radio frequency powered circuit according to claim 2, it is characterised in that also include：First diode, the connection of its positive pole
Second DC output end is connected to first DC output end, negative pole.
4. radio frequency powered circuit according to claim 2, it is characterised in that also include：
Shunt regulator, is connected to first DC output end, for first DC voltage and second direct current
Voltage carries out voltage stabilizing.
5. radio frequency powered circuit according to claim 4, it is characterised in that also include：
First decoupling capacitor, is connected to first DC output end, and in parallel with the shunt regulator；
Second decoupling capacitor, is connected to second DC output end.
6. the radio frequency powered circuit according to any one of claim 2 to 5, it is characterised in that every grade of Dickson charge pump
Elementary cell includes the second diode and the 3rd diode that are connected in series, and
After the antenna accesses the RF energy input, every grade of Dickson charge pump is connected to by coupled capacitor
Second diode of elementary cell and the centre of the 3rd diode, the quantity of the coupled capacitor and the multistage
The quantity of Dickson charge pump elementary cell is equal.
7. radio frequency powered circuit according to claim 6, it is characterised in that the charge pump also includes：Multiple energy storage electricity
Hold, the multiple storage capacitor is connected respectively to the respective output end of multistage Dickson charge pumps elementary cell.
8. radio frequency powered circuit according to claim 6, it is characterised in that second diode and the three or two pole
Pipe includes：Schottky diode.
9. radio frequency powered circuit according to claim 6, it is characterised in that every grade of Dickson charge pump is substantially single
Unit, it uses CMOS transistor to replace second diode and/or the 3rd diode.
10. a kind of ultrahigh-frequency passive electronic tag, it is characterised in that including：Antenna, label chip and as in claim 1 to 9
Radio frequency powered circuit described in any one, wherein,
The antenna is connected to the RF energy input of the radio frequency powered circuit, the radio frequency powered circuit output
First DC voltage and second DC voltage are used to be powered for the label chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025436.7U CN206193873U (en) | 2016-08-31 | 2016-08-31 | Radio frequency supply circuit and hyperfrequency passive tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025436.7U CN206193873U (en) | 2016-08-31 | 2016-08-31 | Radio frequency supply circuit and hyperfrequency passive tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206193873U true CN206193873U (en) | 2017-05-24 |
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ID=58728234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621025436.7U Active CN206193873U (en) | 2016-08-31 | 2016-08-31 | Radio frequency supply circuit and hyperfrequency passive tag |
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| CN (1) | CN206193873U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106372711A (en) * | 2016-08-31 | 2017-02-01 | 爱康普科技（大连）有限公司 | Radio frequency power supply circuit and ultrahigh frequency passive electronic tag |
| EP3734512A1 (en) * | 2019-04-30 | 2020-11-04 | EM Microelectronic-Marin SA | Dual frequency hf-uhf identification integrated circuit |
-
2016
- 2016-08-31 CN CN201621025436.7U patent/CN206193873U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106372711A (en) * | 2016-08-31 | 2017-02-01 | 爱康普科技（大连）有限公司 | Radio frequency power supply circuit and ultrahigh frequency passive electronic tag |
| CN106372711B (en) * | 2016-08-31 | 2024-03-29 | 爱康普科技（大连）有限公司 | Radio frequency power supply circuit and ultrahigh frequency passive electronic tag |
| EP3734512A1 (en) * | 2019-04-30 | 2020-11-04 | EM Microelectronic-Marin SA | Dual frequency hf-uhf identification integrated circuit |
| US11321599B2 (en) | 2019-04-30 | 2022-05-03 | Em Microelectronic-Marin Sa | Dual frequency HF-UHF identification integrated circuit |
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Effective date of registration: 20210312 Address after: Room a210, 56 Huoju Road, Dalian hi tech Industrial Park, Liaoning Province, 116085 Patentee after: ICOMP TECHNOLOGY (DALIAN) Co.,Ltd. Patentee after: GUANGZHOU SYSUR MICROELECTRONICS, Inc. Address before: Room a210, 56 Huoju Road, Dalian hi tech Industrial Park, Liaoning Province, 116085 Patentee before: ICOMP TECHNOLOGY (DALIAN) Co.,Ltd. |
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Effective date of registration: 20210816 Address after: Room a210, 56 Huoju Road, Dalian hi tech Industrial Park, Liaoning Province, 116085 Patentee after: ICOMP TECHNOLOGY (DALIAN) Co.,Ltd. Address before: Room a210, 56 Huoju Road, Dalian hi tech Industrial Park, Liaoning Province, 116085 Patentee before: ICOMP TECHNOLOGY (DALIAN) Co.,Ltd. Patentee before: GUANGZHOU SYSUR MICROELECTRONICS, Inc. |
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