CN107394386A - A kind of charging transmitting antenna for people's et al. Ke equipment - Google Patents

A kind of charging transmitting antenna for people's et al. Ke equipment Download PDF

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Publication number
CN107394386A
CN107394386A CN201710785266.5A CN201710785266A CN107394386A CN 107394386 A CN107394386 A CN 107394386A CN 201710785266 A CN201710785266 A CN 201710785266A CN 107394386 A CN107394386 A CN 107394386A
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CN
China
Prior art keywords
bar hole
paster
line
substrate
people
Prior art date
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Pending
Application number
CN201710785266.5A
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Chinese (zh)
Inventor
宋开宏
赵冉
宋勇
胡科
黄晨
郝伟兵
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Anhui University
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Anhui University
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Filing date
Publication date
Application filed by Anhui University filed Critical Anhui University
Priority to CN201710785266.5A priority Critical patent/CN107394386A/en
Publication of CN107394386A publication Critical patent/CN107394386A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/273Adaptation for carrying or wearing by persons or animals
    • 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
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)

Abstract

The present invention relates to a kind of charging transmitting antenna for people's et al. Ke equipment, solves the defects of energy transmission efficiency is low, can not meet human body specific absorption rate limits compared with prior art.Upper annular paster is by upper bar hole and some above line of cut etc. point segmentations in the present invention, middle part on upper annular paster positioned at upper line of cut is welded with patch capacitor, upper microstrip line connects with the upper annular paster of upper bar hole side, connects in the upper bar hole of metal connecting plate one end insertion and with the upper annular paster of upper bar hole opposite side.The present invention can binding magnetic field, realize the enhancing of near field magnetic coupling degree, and make antenna surface homogeneous current distribution, radiated electric field peak value reduced, so as to reduce average SAR value.

Description

A kind of charging transmitting antenna for people's et al. Ke equipment
Technical field
The present invention relates to implanted equipment technical field, a kind of specifically charging for people's et al. Ke equipment is sent out Penetrate antenna.
Background technology
As requirement of the people to medical technique level improves constantly, the appearance of miniature embedded type Medical Devices is medical skill The development of art provides safeguard, as monitoring, treatment and rehabilitation of human brain injured nerve etc. play an important role.It is same with this When, traditional embedded type equipment is because that using life-span shorter high-energy battery, need to change battery by frequent operation technique, be easily caused The problems such as wound infection, high surgery cost and battery charging process cause local tissue temperature too high.
However, implantable wireless power technology can ensure implant normal work on the premise of no main energy sources, this Kind mode can reduce frequently expensive expense and risk caused by operation, and support medical communication frequency range (ISM 402- Bi-directional data streaming in 405MHz).Due to the fast development of microelectronics, the size and power consumption of implant are constantly subtracting Small, for whole wireless energy transfer link, the size for being preferably implanted into (reception) antenna should be sufficiently small, and between antenna pair Interval should be less than 20mm.To ensure that reception antenna realizes that the optimum frequency of maximum power transfer is located at the ISM frequencies of medical communication In section, this need to depend on the size of transmitting and reception antenna and transmission spacing.
At present, it is implanted antenna structure and is broadly divided into grade stereochemical structure and the flexible superthin structure of Centimeter Level, and it is outside The method of analysis and the test of the structure type and wireless energy transfer of antenna is then relatively more.Conventional circular transmitting antenna is deposited It is uneven in the Surface current distribution of antenna, the shortcomings of magnetic field intensity is weaker, need to be on the premise of SAR limitations be met, by changing Enter the structure of transmitting antenna, realize efficient radio transmission efficiency.As shown in figure 5, because it is by air, skin, fat, bone There is loss in the tissues such as arm, the energy for causing to be wirelessly transferred, while also to meet that human body specific absorption rate (SAR) limits, Cause conventional charging transmitting antenna can not be satisfied with the use environment of people's et al. Ke equipment.
Therefore, the transmitting antenna for how developing a kind of high-transmission efficiency and low human body specific absorption rate has become urgent need The technical problem of solution.
The content of the invention
The invention aims to solve, energy transmission efficiency in the prior art is low, can not meet human body specific absorption rate The defects of limitation, there is provided a kind of charging transmitting antenna for people's et al. Ke equipment solves the above problems.
To achieve these goals, technical scheme is as follows:
A kind of charging transmitting antenna for people's et al. Ke equipment, including substrate, the upper surface of substrate are provided with gold Belonging to paster, the lower surface of substrate is provided with lower metal patch,
Mesopore is provided with the middle part of described substrate, board slot is provided with by mesopore on substrate, magnetic core, board slot is installed in mesopore Metal connecting plate is inside installed;
Upper metal patch includes upper annular paster and upper microstrip line, and upper annular paster is by upper bar hole and some upper cuttings Line etc. point is split, and patch capacitor, upper microstrip line and upper bar hole are welded with positioned at the middle part of upper line of cut on upper annular paster The upper annular paster of side connects, and is pasted in the upper bar hole of metal connecting plate one end insertion and with the upper annular of upper bar hole opposite side Piece connects;Lower metal patch includes lower ring-type paster and lower microstrip line, and lower ring-type paster is cut under lower bar hole and some Line etc. point is split, and patch capacitor, lower microstrip line and lower bar hole are welded with positioned at the middle part of lower cutting line on lower ring-type paster The lower ring-type paster of side connects, in the lower bar hole of metal connecting plate other end insertion and with the lower ring-type of lower bar hole opposite side Paster connects.
The quantity of the upper line of cut is 6-8, and upper line of cut is identical with the quantity of lower cutting line.
Described magnetic core is in the mesopore of substrate.
Described upper metal patch is bonded in the upper surface of substrate.
The width of the line of cut is more than 1.5mm and less than the length of patch capacitor.
The magnetic core is cylinder, and the height of magnetic core is equal to the thickness of substrate.
Beneficial effect
A kind of charging transmitting antenna for people's et al. Ke equipment of the present invention, can fetter magnetic compared with prior art , near field magnetic coupling degree enhancing is realized, and make antenna surface homogeneous current distribution, radiated electric field peak value is reduced, so as to reduce Average SAR value.The design of loading capacitance by line of cut and on line of cut centre position, antenna surface electricity can be effectively improved Flow distribution non-uniform phenomenon;By embedding the design of cylinder shape magnetic core, it can effectively strengthen magnetic field constraint.The present invention, which has, to be improved Wireless energy transmission efficiency, reduce near field electric field radiation, reduce the characteristics of human body specific absorption rate SAR value.
Brief description of the drawings
Fig. 1 is the structure top view of the present invention;
Fig. 2 is the structure upward view of the present invention;
Fig. 3 is the perspective view of the present invention;
Fig. 4 is the exploded perspective view of the present invention;
Fig. 5 transmits schematic diagram for wireless charging in the prior art;
Fig. 6 is that the power gain of traditional single loop antenna and antenna of the present invention changes simulation result comparison diagram with frequency;
Fig. 7 is that the capacitance C that patch capacitor is different in the present invention corresponds to different voltage magnitudes and frequency curve graph of a relation;
Fig. 8 is that the terminal bearing power of traditional single loop antenna and antenna of the present invention changes comparison diagram with frequency;
Fig. 9 be traditional single loop antenna and antenna of the present invention terminal load voltage and transmitting antenna and skin surface it Between transmission spacing change comparison diagram;
Figure 10 is that the power gain of traditional single loop antenna and antenna of the present invention changes actual measured results pair with frequency Than figure;
Wherein, metal patch, 4- mesopores, 5- board slots, 6- magnetic cores, the connection of 7- metals under the upper metal patch of 1- substrates, 2-, 3- Microstrip line under ring-type paster, 13- under plate, 8- upper annulars paster, the upper microstrip lines of 9-, the upper lines of cut of 10-, 11- patch capacitors, 12-, Bar hole, 16- lower cutting lines under the upper bar holes of 14-, 15-.
Embodiment
The effect of to make to architectural feature of the invention and being reached, has a better understanding and awareness, to preferable Embodiment and accompanying drawing coordinate detailed description, are described as follows:
As shown in Figure 3 and Figure 4, a kind of charging transmitting antenna for people's et al. Ke equipment of the present invention includes base Plate 1, the dielectric constant of substrate 1 is 4.4, and tangent loss angle is 0.02, is highly 1.6mm.Press prior art in the upper surface of substrate 1 Mode installs metal patch 2, the lower metal patch 3 of lower surface installation of substrate 1, and upper metal patch 2 and lower metal patch 3 can be with It is bonded in the upper surface of substrate 1.
The middle part of substrate 1 is provided with mesopore 4, and mesopore 4 is used to install magnetic core 6.On substrate 1 board slot 5, plate are provided with positioned at the side of mesopore 4 Groove 5 can communicate with mesopore 4, and board slot 5 is used to install metal connecting plate 7, and board slot 5 is traditional transparent design as mesopore 4. Magnetic core 6 is installed in mesopore 4, magnetic core 6 in the mesopore 4 of substrate 1 or magnetic core 6 can also by other mounting means it is spacing In mesopore 4.Here, the purpose that substrate 1 is opened up into the embedded magnetic core 6 of mesopore 4 is that magnetic induction flux is tied to the position of Relatively centralized.Plate Metal connecting plate 7 is installed, magnetic core 6 can be in contact with metal connecting plate 7, and magnetic core 6 connects with metal in actual applications in groove 5 Fishplate bar 7 is in contact not to be influenceed on actual result, can so reduce the difficulty of processing in practical application.
As shown in figure 4, upper metal patch 2 includes upper annular paster 8 and upper microstrip line 9.Here, design paster is for annular In order to coordinate the constraint magnetic line of force of magnetic core 6 to act on.Equally, lower metal patch 3 includes lower ring-type paster 12 and lower microstrip line 13, on Ring-type paster 8 is identical with the size of lower ring-type paster 12.
As shown in figure 1, upper annular paster 8 is by upper bar hole 14 and some upper grade point of line of cut 10 segmentations, upper annular patch Middle part on piece 8 positioned at upper line of cut 10 is welded with patch capacitor 11, i.e., a plurality of upper line of cut 10 and a upper bar hole 14 Upper annular paster 8 is partially divided into multiple size identical sector pasters, and on each line of cut 10 middle part (on On ring-type paster 8) be welded with patch capacitor 11, i.e., in addition to upper bar hole 14, multiple size identical sector pasters are again It is connected by patch capacitor 11 and is combined into an annular.Because electric current on the surface of annulus is in Sine distribution, antenna is split Being connected into sufficiently small some with electric capacity, after the effect of electric capacity is switched on, energy can be temporarily stored within electric capacity, etc. The equal energy storage of electric capacity completes that loop could be formed, equivalent to each part CURRENT DISTRIBUTION can by the energy storage in electric capacity come Excite, it is ensured that in small part, current amplitude and phase varying less with length.The size of patch capacitor 11 It is adjusted according to resonance, inductance value corresponding to the loop transmit antenna of different structure is change, and the summation of capacitance is equal to Resonance during inductance value, to should be under frequency wireless energy transmission efficiency it is maximum, herein by changing the big minor adjustment of capacitance The working frequency of annulus transmitting antenna is comparatively also relatively simple.
Similarly, as shown in Fig. 2 lower metal patch 3 includes lower ring-type paster 12 and lower microstrip line 13, the lower quilt of ring-type paster 12 Lower bar hole 15 and some grades point of lower cutting line 16 are split, and the middle part on lower ring-type paster 12 positioned at lower cutting line 16 is welded There is patch capacitor 11.Wherein, upper line of cut 10 is identical with the quantity of lower cutting line 16, can be 6-8.
Upper microstrip line 9 connects with the upper annular paster 8 of the upper side of bar hole 14, the upper bar shaped of the one end of metal connecting plate 7 insertion Connect in hole 14 and with the upper annular paster 8 of the upper opposite side of bar hole 14.Upper annular paster 8 is due in the upper opening position of bar hole 14 Do not connect and be fitted without patch capacitor 11 yet, it is used to form closed-loop path.Therefore, upper microstrip line 9 and upper 14 liang of bar hole The upper annular paster 8 of wherein side in side connects, and metal connecting plate 7 is used to connect two metal patches up and down and just forms one Individual bicyclic loop, therefore one end of metal connecting plate 7 connects with the upper annular paster 8 of the upper opposite side of bar hole 14, by using Metal connecting plate 7 carries out conduction of the upper annular paster 8 to lower ring-type paster 12.Similarly, lower microstrip line 13 and lower bar hole 15 1 The lower ring-type paster 12 of side connects, in the lower bar hole 15 of the other end of metal connecting plate 7 insertion and with the lower opposite side of bar hole 15 Lower ring-type paster 12 connects.Thus, formed from upper microstrip line 9, upper annular paster 8, metal connecting plate 7, lower ring-type paster 12 to One bicyclic loop of lower microstrip line 13, the loop of closure produce the magnetic field of change by the electric field of alternation.Such as Fig. 1 and Fig. 2 institutes Show, upper microstrip line 9 can be designed to corresponding form up and down with lower microstrip line 13, so be easy to metal connecting plate 7 in board slot 5 Fixation, if upper microstrip line 9 and lower microstrip line 13 are not designed to corresponding form up and down, then metal connecting plate 7 is in board slot 5 Then need to carry out oblique fixation, less produced beneficial to the large-scale processing in later stage.
Here, magnetic core 6 is cylinder, the height of magnetic core 6 is equal to the thickness of substrate 1, in actual applications, due to magnetic core Height can not increased or decrease magnetic core magnetic field constraint ability, influence result size only and magnetic core magnetic conductivity size and Be lost it is relevant, if therefore magnetic core 6 is slightly higher or thickness of slightly below substrate 1, on actual use without too big influence.In addition, upper line of cut 10 width is more than 1.5mm and less than the length of patch capacitor 11.
As shown in fig. 6, using high-frequency electromagnetic simulation software HFSS to biological laminated tissue's mould of offer wireless energy transfer Type and the present invention are emulated, and obtain power gain corresponding to the transmitting antenna of two kinds of structures with frequency variation curve.The present invention Described transmitting antenna, power gain are significantly improved, and power gain is further increased relative to traditional single loop antenna.Such as figure Shown in 10, traditional single loop antenna and antenna of the present invention correspond to the actual test result figure of power gain, and basic shown in Fig. 6 It is identical, it also illustrate that simulation result is consistent with actual result with simulation result, simulation result is reliable, correct.
As shown in fig. 7, when the different capacitance C of the patch capacitor of the present invention corresponds to different voltage magnitudes, its voltage Amplitude changes with frequency curve it follows that increasing with the value of patch capacitor, resonant frequency is reducing.It is as shown in figure 8, traditional Bearing power and frequency variation curve corresponding to single loop antenna and antenna of the present invention, wherein antenna of the present invention correspondingly connects The negative power received is maximum.As shown in figure 9, traditional single loop antenna corresponds to mutually isostructural reception day with antenna of the present invention Line terminal voltage value (load voltage) is with the change curve of transmission spacing, however, be evident that is loaded caused by antenna of the present invention Voltage is maximum, and the size of magnitude of voltage tapers off trend with the increase of transmission spacing.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its Equivalent defines.

Claims (6)

1. a kind of charging transmitting antenna for people's et al. Ke equipment, including substrate (1), the upper surface of substrate (1) are provided with Upper metal patch (2), the lower surface of substrate (1) are provided with lower metal patch (3), it is characterised in that:
Mesopore (4) is provided with the middle part of described substrate (1), is provided with board slot (5) on substrate (1) by mesopore (4), mesopore (4) is interior Magnetic core (6) is installed, metal connecting plate (7) is installed in board slot (5);
Upper metal patch (2) includes upper annular paster (8) and upper microstrip line (9), upper annular paster (8) by upper bar hole (14) and Some upper line of cut (10) decile is split, and the middle part on upper annular paster (8) positioned at upper line of cut (10) is welded with paster Electric capacity (11), upper microstrip line (9) connect with the upper annular paster (8) of upper bar hole (14) side, and metal connecting plate (7) one end is inserted Enter in upper bar hole (14) and connect with the upper annular paster (8) of upper bar hole (14) opposite side;Under lower metal patch (3) includes Ring-type paster (12) and lower microstrip line (13), lower ring-type paster (12) is by lower bar hole (15) and some lower cutting lines (16) etc. Split, the middle part on lower ring-type paster (12) positioned at lower cutting line (16) is welded with patch capacitor (11), lower microstrip line (13) the lower ring-type paster (12) with lower bar hole (15) side connects, the lower bar hole of metal connecting plate (7) other end insertion (15) connect in and with the lower ring-type paster (12) of lower bar hole (15) opposite side.
A kind of 2. charging transmitting antenna for people's et al. Ke equipment according to claim 1, it is characterised in that:It is described The quantity of upper line of cut (10) is 6-8, and upper line of cut (10) is identical with the quantity of lower cutting line (16).
A kind of 3. charging transmitting antenna for people's et al. Ke equipment according to claim 1, it is characterised in that:It is described Magnetic core (6) embedded in substrate (1) mesopore (4) in.
A kind of 4. charging transmitting antenna for people's et al. Ke equipment according to claim 1, it is characterised in that:It is described Upper metal patch (2) be bonded in the upper surface of substrate (1).
A kind of 5. charging transmitting antenna for people's et al. Ke equipment according to claim 1, it is characterised in that:It is described The width of upper line of cut (10) is more than 1.5mm and less than the length of patch capacitor (11).
A kind of 6. charging transmitting antenna for people's et al. Ke equipment according to claim 1, it is characterised in that:It is described Magnetic core (6) is cylinder, and the height of magnetic core (6) is equal to the thickness of substrate (1).
CN201710785266.5A 2017-09-04 2017-09-04 A kind of charging transmitting antenna for people's et al. Ke equipment Pending CN107394386A (en)

Priority Applications (1)

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CN201710785266.5A CN107394386A (en) 2017-09-04 2017-09-04 A kind of charging transmitting antenna for people's et al. Ke equipment

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Application Number Priority Date Filing Date Title
CN201710785266.5A CN107394386A (en) 2017-09-04 2017-09-04 A kind of charging transmitting antenna for people's et al. Ke equipment

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109638444A (en) * 2019-01-03 2019-04-16 西交利物浦大学 A kind of loop aerial applied to Implanted cardiac pacemaker wireless charging
CN113871851A (en) * 2021-08-31 2021-12-31 荣耀终端有限公司 Terminal antenna and mobile terminal equipment

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CN106356635A (en) * 2016-09-14 2017-01-25 安徽大学 Cross-anchor-like metamaterial microcell structure
CN106486740A (en) * 2016-11-29 2017-03-08 华南理工大学 A kind of wideband implanted human body antenna being applied to portable medical
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CN106356635A (en) * 2016-09-14 2017-01-25 安徽大学 Cross-anchor-like metamaterial microcell structure
CN106486740A (en) * 2016-11-29 2017-03-08 华南理工大学 A kind of wideband implanted human body antenna being applied to portable medical
CN106910991A (en) * 2017-01-17 2017-06-30 中国传媒大学 A kind of high isolation dual polarized MIMO loop antennas based on segmented line

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109638444A (en) * 2019-01-03 2019-04-16 西交利物浦大学 A kind of loop aerial applied to Implanted cardiac pacemaker wireless charging
CN109638444B (en) * 2019-01-03 2024-02-02 西交利物浦大学 Annular antenna applied to wireless charging of implantable cardiac pacemaker
CN113871851A (en) * 2021-08-31 2021-12-31 荣耀终端有限公司 Terminal antenna and mobile terminal equipment

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Application publication date: 20171124

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