CN105305663B - The multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed - Google Patents
The multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed Download PDFInfo
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- CN105305663B CN105305663B CN201510698139.2A CN201510698139A CN105305663B CN 105305663 B CN105305663 B CN 105305663B CN 201510698139 A CN201510698139 A CN 201510698139A CN 105305663 B CN105305663 B CN 105305663B
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Abstract
The invention discloses the multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed, it is made of first to fourth antenna, first to fourth matching network, the first to the 3rd micro-transformer, cockcroft-walton voltage multiplier network, DC voltage-stabilizing module and energy reservoir.The output terminal of first to fourth antenna connects the input terminal of first to fourth matching network respectively；The output terminal of first matching network and the second matching network connects two input terminals of first micro-transformer respectively；The output terminal of 3rd matching network and the 4th matching network connects two input terminals of second micro-transformer respectively；The output terminal of first micro-transformer and the second micro-transformer connects two input terminals of the 3rd micro-transformer respectively；The output terminal of 3rd micro-transformer is cascaded with cockcroft-walton voltage multiplier network, DC voltage-stabilizing module and energy reservoir successively.The present invention can be that implantable electronic medical device is powered, to improve the power and efficiency of RF energy collection.
Description
Technical field
The invention belongs to medical electronics technical field, is related to a kind of implantable electronic medical device wireless power device, more
It is specifically related to the multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed.
Background technology
Collection of energy is to collect micro-energy by specific device, is then converted into electric energy and it is stored and profit
Process.Collection of energy is mainly used in the electronic equipment of low-power consumption, such as wireless sensor network and wearable electronic
Product etc..In recent decades, with the continuous development of wireless communication technique, RF energy is from nothings billions of all over the world
Launch in line electricity transmitter, these transmitters include mobile phone, mobile telephone base station and TV/radio signals transmitting base
Stand.This causes RF energy to collect all has commercial viability in worldwide.Powered using these energy for equipment
The energy can be saved, reduces demand of the equipment to battery.Secondly, it can also be designed to that one kind obtains energy without using the equipment of battery
The device that enough charge accumulations will be run can just be run or be had to amount.Compared to other energy sources, source of radio frequency energy has that its is only
Special advantage.It can be moved freely, controllability is strong from time restriction in the range of transmission sources.And can utilize to fill
Battery or the RF energy of super capacitor storage conversion, for using at any time.3rd, many implantable electronic medical devices all have
There are multiple electrodes (such as nerve stimulator), these electrodes can serve as the antenna of RF energy collecting circuit.Therefore, using penetrating
Frequency energy has become a kind of trend to power for some low consumption circuits.But there are following for existing RF energy collection technique
Limitation：1) energy being collected into is smaller, and the DC voltage of acquisition is too low, and DC current is too small；2) collect energy efficiency compared with
Low (being less than 1%)；3) single antenna is needed to configure.
The content of the invention
The purpose of the invention is to overcome drawbacks described above existing in the prior art, solve existing RF energy collector and receive
A kind of technical problem that the energy of collection is small, efficiency is low, configuration is complicated, there is provided the multiple antennas high efficiency RF energy that multi-electrode is formed
Collector.
To reach above-mentioned purpose, the present invention adopts the technical scheme that：
The multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed, by first to fourth antenna 1, first to the
The 2, first to the 3rd micro-transformer 3 of four matching networks, cockcroft-walton voltage multiplier network 4, DC voltage-stabilizing module 5 and energy reservoir 6
Composition.The antenna 1 is used for receiving RF energy.The matching network 2 completes the power between radiofrequency signal and rear class network
Or impedance matching, realize the maximum delivered of RF energy.The micro-transformer 3 be used to improving the faint alternating voltage that receives and
Converge weak current.The cockcroft-walton voltage multiplier network 4 realizes the lifting of voltage by way of adding up step by step, so that will be faint
Voltage conversion into the DC voltage for utilizing.The DC voltage-stabilizing module 5 is by the output of the cockcroft-walton voltage multiplier network 4
Voltage stabilizing is carried out, exports steady dc voltage.The energy reservoir 6 is used to store collected energy.
The output terminal of first to fourth antenna 1 connects the input terminal of first to fourth matching network 2 respectively, its
Described in the output terminal of the first matching network 2 and the second matching network 2 connect two of first micro-transformer 3 inputs respectively
End；The output terminal of 3rd matching network 2 and the 4th matching network 2 connect second micro-transformer 3 respectively two are defeated
Enter end；The output terminal of first micro-transformer, 3 and second micro-transformer 3 connects two of the 3rd micro-transformer 3 respectively
Input terminal；The output terminal of 3rd micro-transformer 3 in order with cockcroft-walton voltage multiplier network 4, DC voltage-stabilizing module 5 and energy
Reservoir 6 cascades.
Above-mentioned antenna 1 is the electrode of implantable electronic medical device.
Above-mentioned matching network is L-type inductor-capacitor (LC) network or the matching network being made of metal micro-strip line.
Above-mentioned micro-transformer 3 is the integrated transformer that metal micro-strip line is formed.
Above-mentioned cockcroft-walton voltage multiplier network 4 is cascaded successively by multiple single-stage voltage multiplying rectifier networks or trapezoidal connection structure successively
Into the rectifier diode in each single-stage voltage multiplying rectifier network selects the Schottky diode of VHF band.
Above-mentioned energy reservoir 6 is any, preferably chargeable micro cell in chargeable micro cell or storage capacitor.
The multiple antennas high efficiency RF energy collector that a kind of multi-electrode of the present invention is formed has compared with prior art
Following advantages and beneficial effects：
1st, the energy ratio single antenna collected is big, therefore can produce sufficiently high DC voltage and electric current to drive low-power consumption
Implantable electronic medical device；
2nd, the efficiency of collection energy is higher than single antenna, and antenna is more, and its efficiency is higher, therefore energy loss is compared with single antenna
It is small；
3rd, the multi-group electrode in medical treatment electronic equipment (such as nerve stimulator) can be used as antenna, therefore without single
Solely configuration antenna, achievees the purpose that not only to improve performance but also does not increase cost and increase equipment volume additionally.
Brief description of the drawings
Fig. 1 is the system construction drawing of the present invention, in figure:1. antenna；2. matching network；3. micro-transformer；4. multistage multiplication of voltage
Commutated network；5. DC voltage-stabilizing module；6. energy reservoir.
Fig. 2 is the circuit diagram of matching network 2.
Fig. 3 is the structure chart of micro-transformer 3.
Fig. 4 is the circuit diagram of cockcroft-walton voltage multiplier network 4.
Fig. 5 is the circuit diagram of DC voltage-stabilizing module 5.
Fig. 6 is the schematic diagram of energy reservoir 6.
Embodiment
In order to deepen the understanding of the present invention, with reference to embodiment and attached drawing, the present invention is described in further detail, should
Embodiment is only used for explaining the present invention, is not intended to limit the scope of the present invention..
As shown in Figures 1 to 6, the multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed, by first to the
Four antennas 1, the 2, first to the 3rd micro-transformer 3 of first to fourth matching network, cockcroft-walton voltage multiplier network 4, DC voltage-stabilizing mould
Block 5 and energy reservoir 6 form.The output terminal of first to fourth antenna 1 connects first to fourth pair net respectively
The input terminal of network 2, wherein the output terminal of first matching network, 2 and second matching network 2 connects described first micro- change respectively
Two input terminals of depressor 3；It is micro- that the output terminal of 3rd matching network 2 and the 4th matching network 2 connects described second respectively
Two input terminals of transformer 3；The output terminal of first micro-transformer, 3 and second micro-transformer 3 connects the described 3rd respectively
Two input terminals of micro-transformer 3；The output terminal of 3rd micro-transformer 3 in order with cockcroft-walton voltage multiplier network 4, direct current
Voltage stabilizing module 5 and energy reservoir 6 cascade.
The antenna 1 is realized with platinum electrode.If electrode length is fixed, suitable radiofrequency signal is selected according to its length.
If electrode length is adjustable, its length is determined according to the frequency for receiving radiofrequency signal, such as when the radiofrequency signal of reception is 2.4GHz,
If selecting the electrode of 1/4 wavelength, the length of 3.125cm.The matching network 2 is by L-type inductor-capacitor (LC) real-time performance, such as
Shown in Fig. 2, wherein the input terminal of inductance L is connected with 1 input terminal of antenna, the output terminal of inductance L and the micro-transformer 3
Input terminal is connected with one end of capacitance C, and the other end of capacitance C and the other end and micro-transformer 3 of 1 input terminal of antenna are defeated
The other end for entering end is connected.Its inductance value and capacitance are determined according to the input impedance for receiving signal frequency and rear class network.
Such as to 2.4GHz radiofrequency signals, if rear class network input impedance is 50 Ω, L is 5nH, C 10pF at this time.The micro-transformer
3 integrated transformers formed for metal micro-strip line, as shown in figure 3, its primary coil is symmetrical using axle center by spaced apart from each other 3 circles
Square micro-strip coil it is in seriesThere is tap to be used to be grounded among it；The internal diameter of primary coil is 100 μm, line
Width is 20 μm, line-spacing is 3 μm；Its secondary coil by with primary coil it is coaxial 1 circle outside diameter be 278 μm, line width is 20 μm, line-spacing
Formed for 3 μm of metal micro-strip lines
The cockcroft-walton voltage multiplier network 4 by 8 single-stage voltage multiplying rectifier networks are trapezoidal successively as shown in figure 4, be formed by connecting.
First order single-stage voltage multiplying rectifier network is made of C1, C2, D1 and D2, a termination input terminal of wherein C1, its other end and D1's
Cathode is connected with the anode of D2, and the cathode of D2 is connected with one end of C2, and the anode of D1 and the other end of C2 connect another at the same time
Input terminal.An input terminal (i.e. one end of C3) for second single-stage voltage multiplying rectifier network (C3, C4, D3 and D4) and first order list
The anode of D1 is connected in level voltage multiplying rectifier network, its another input terminal (i.e. the anode of D3) is connected with the cathode of D2, with such
Push away.Rectifier diode in each single-stage voltage multiplying rectifier network selects the Schottky diode of VHF band, such as can be selected
The HSMS-28sx series Schottky diodes of Agilent Technologies companies.The DC voltage-stabilizing module 5 such as Fig. 5 institutes
Show, select the DC-DC module of low-power consumption, such as the NCP583 voltage stabilizing chips of ON Semiconductor companies can be selected.It is described
Energy reservoir 6 is as shown in fig. 6, select rechargeable lithium ion batteries.
The efficiency of energy collection that experiment measures the present embodiment is 2%.
Above example, is merely preferred embodiments of the present invention.Certainly, the present invention can also have other a variety of implementations
Example, in the case of without departing substantially from spirit of the invention and its essence, any one skilled in the art, when can be according to this
Various corresponding equivalent arrangements are made in invention, should all belong to the protection domain of appended claims of the invention.
The multiple antennas high efficiency RF energy collector that a kind of multi-electrode of the present invention is formed, can be that low-power consumption implanted is cured
Power electronic equipment is treated, the power and efficiency of RF energy collection can be effectively improved.
Claims (6)
1. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed, it is characterized in that, by first to fourth antenna, the
One to the 4th matching network, the first to the 3rd micro-transformer, cockcroft-walton voltage multiplier network, DC voltage-stabilizing module and energy reservoir
Composition；The output terminal of first to fourth antenna connects the input terminal of first to fourth matching network, wherein institute respectively
The output terminal for stating the first matching network and the second matching network connects two input terminals of first micro-transformer respectively；It is described
The output terminal of 3rd matching network and the 4th matching network connects two input terminals of second micro-transformer respectively；Described
The output terminal of one micro-transformer and the second micro-transformer connects two input terminals of the 3rd micro-transformer respectively；Described 3rd
The output terminal of micro-transformer is cascaded with cockcroft-walton voltage multiplier network, DC voltage-stabilizing module and energy reservoir in order.
2. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode according to claim 1 is formed, it is characterized in that：
The antenna is the electrode of implantable electronic medical device.
3. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode according to claim 1 is formed, it is characterized in that：
The matching network is " L-type " network being made of inductance and capacitance or the matching network being made of metal micro-strip line.
4. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode according to claim 1 is formed, it is characterized in that：
The micro-transformer is the integrated transformer that metal micro-strip line is formed.
5. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode according to claim 1 is formed, it is characterized in that：
The cockcroft-walton voltage multiplier network is cascaded by multiple single-stage voltage multiplying rectifier networks or trapezoidal successively connected and composed successively.
6. the multiple antennas high efficiency RF energy collector that a kind of multi-electrode according to claim 5 is formed, it is characterized in that：
Rectifier diode in the single-stage voltage multiplying rectifier network selects HF schottky diode.
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| CN201510698139.2A CN105305663B (en) | 2015-10-22 | 2015-10-22 | The multiple antennas high efficiency RF energy collector that a kind of multi-electrode is formed |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105896749B (en) * | 2016-05-19 | 2020-01-14 | 河南师范大学 | Microwave electric energy conversion device |
| KR20180006176A (en) * | 2016-07-08 | 2018-01-17 | 재단법인 다차원 스마트 아이티 융합시스템 연구단 | Wireless charging system of using multi-frequency for wireless charging at long and short distance |
| CN106410983A (en) * | 2016-10-26 | 2017-02-15 | 太原理工大学 | Radio frequency energy acquisition system based on planar inverted-F antenna |
| CN106961167A (en) * | 2017-03-28 | 2017-07-18 | 江苏科技大学 | A kind of multiple antennas tandem RF energy collector |
| CN106961166A (en) * | 2017-03-28 | 2017-07-18 | 江苏科技大学 | A kind of parallel RF energy collector of multiple antennas |
| CN108054524B (en) * | 2017-12-11 | 2020-10-02 | 中山大学 | Rectifying antenna |
| CN108832731A (en) * | 2018-07-17 | 2018-11-16 | 电子科技大学 | A kind of pulse energy recovery circuit |
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| CN101640949B (en) * | 2009-06-29 | 2012-07-25 | 惠州Tcl移动通信有限公司 | Multi-antenna wireless transceiving device |
| KR20120036751A (en) * | 2010-10-08 | 2012-04-18 | 한국전자통신연구원 | Apparatus for harvesting from electromagnetic field |
| US8810209B2 (en) * | 2011-12-22 | 2014-08-19 | Blackberry Limited | Power distribution network based on multiple charge storage components |
| CN103812226A (en) * | 2012-11-13 | 2014-05-21 | 集美大学 | Radio frequency energy collecting device applied to wireless mobile terminal |
| CN103023114A (en) * | 2012-12-08 | 2013-04-03 | 河南师范大学 | Integrated rechargeable battery device |
| CN104659499B (en) * | 2015-02-28 | 2017-07-25 | 西安电子科技大学 | A kind of multi-frequency band radio-frequency energy capturing systems |
| CN104993618A (en) * | 2015-07-15 | 2015-10-21 | 南京邮电大学 | Circuit for converting electromagnetic wave into DC voltage |
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Effective date of registration: 20220120 Address after: 519000 unit 816, building 2 (block a, entrepreneurship building), Tsinghua Science Park (Zhuhai), No. 101, University Road, Tangjiawan Town, high tech Zone, Zhuhai, Guangdong Patentee after: Zhuhai Simin Technology Co.,Ltd. Address before: Meng Xi Road 212003 Zhenjiang city of Jiangsu province Jingkou District No. 2 Patentee before: JIANGSU University OF SCIENCE AND TECHNOLOGY |
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