CN111211407A - Antenna assembly and wireless charging device including the same - Google Patents
Antenna assembly and wireless charging device including the sameDownload PDFInfo
- Publication number
- CN111211407A CN111211407ACN201811389111.0ACN201811389111ACN111211407ACN 111211407 ACN111211407 ACN 111211407ACN 201811389111 ACN201811389111 ACN 201811389111ACN 111211407 ACN111211407 ACN 111211407A
- Authority
- CN
- China
- Prior art keywords
- antenna
- coil antenna
- coil
- terminals
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000859α-FeInorganic materials0.000description3
- 230000000712assemblyEffects0.000description2
- 238000000429assemblyMethods0.000description2
- 230000008878couplingEffects0.000description2
- 238000010168coupling processMethods0.000description2
- 238000005859coupling reactionMethods0.000description2
- 239000002184metalSubstances0.000description2
- 238000000034methodMethods0.000description2
- 238000004891communicationMethods0.000description1
- 230000001627detrimental effectEffects0.000description1
- 230000005284excitationEffects0.000description1
- 238000002347injectionMethods0.000description1
- 239000007924injectionSubstances0.000description1
- 238000005259measurementMethods0.000description1
- 239000000243solutionSubstances0.000description1
Images
Classifications
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2866—Combination of wires and sheets
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Technical Field
The invention relates to wireless charging.
More particularly, the present invention relates to antenna assemblies and wireless charging devices including such antenna assemblies.
Background
The wireless charging device is provided with an antenna assembly for generating an alternating magnetic field.
In some embodiments, such an antenna assembly includes at least a first pair of terminals, a second pair of terminals, a first coil antenna connected to the first pair of terminals, and a second coil antenna connected to the second pair of terminals.
In such an antenna assembly, the first coil antenna and the second coil antenna may be arranged in a first antenna layer (including at least the first coil antenna) and a second antenna layer (including at least the second coil antenna), respectively.
When seeking to reduce costs, the first coil antenna and the second coil antenna are stamped coil antennas; the stamped coil antenna has a lower quality factor than other techniques, such as the use of Litz (Litz) wire, which negatively impacts the efficiency of the system.
Disclosure of Invention
In this context, the invention provides an antenna assembly comprising:
-at least a first pair of terminals and a second pair of terminals;
-a first coil antenna connected to a first pair of terminals, the first coil antenna being stamped;
-a second coil antenna connected to the second pair of terminals,
wherein the first coil antenna and the second coil antenna are arranged in a first antenna layer comprising at least the first coil antenna and in a second antenna layer comprising at least the second coil antenna and being different from the first antenna layer, respectively, wherein the first coil antenna and the second coil antenna at least partially overlap, and wherein the second coil antenna has a quality factor in empty air that is greater than the first coil antenna.
The use of different types of coil antennas for the first and second antennas, respectively, is predictably ineffective. For example, a first (stamped) coil antenna is expected to be less meaningful than a second coil antenna with a higher quality factor; the first (stamped) coil antenna is considered problematic because it is detrimental to the quality factor of the second coil antenna.
On the contrary, the structure proposed above is relatively balanced when considering the Quality Factor (QF) of the two coil antennas, and achieves satisfactory good results at reduced cost.
According to possible optional functions:
-the first antenna layer comprises at least a third coil antenna (and possibly additional coil antennas) adjacent to the first coil antenna in the first antenna layer;
the third coil antenna (and possibly each additional coil antenna) is stamped;
the second coil antenna has an in-air quality factor higher than 60 (possibly higher than 100, for example in the case of the litz coil antenna mentioned below);
-the second coil antenna comprises at least one wound insulated wire;
-the second coil antenna is a litz coil antenna;
the second coil antenna is formed by a conductive track of a flexible printed circuit;
-the second antenna layer comprises an additional coil antenna contiguous with the first coil antenna in the second antenna layer;
-the first coil antenna is located on a first side on the printed circuit board;
-the second coil antenna is arranged at least partially overlapping the first coil antenna;
generally, the coil antenna layers are located on the first side of the printed circuit board in a non-specified order;
a second face of the printed circuit board opposite to the first face carries a reradiating antenna.
The present invention also provides an antenna assembly comprising:
-at least a first pair of terminals and a second pair of terminals;
-a stamped coil antenna connected to the first pair of terminals;
-a litz coil antenna connected to the second pair of terminals;
wherein the stamped coil antenna and the litz wire coil antenna are arranged in a first antenna layer comprising at least the stamped coil antenna and in a second antenna layer comprising at least the litz wire coil antenna and being different from the first antenna layer, respectively, wherein the stamped coil antenna and the litz wire coil antenna at least partially overlap.
As described above, the first antenna layer may include an additional stamped coil antenna (connected to the third pair of terminals of the antenna assembly). The further stamped coil antenna and the litz coil antenna may also partially overlap.
The invention also provides a wireless charging device which comprises the antenna assembly.
The wireless charging device may further comprise a driver circuit for delivering an alternating current and/or a selection circuit for selecting at least one pair of terminals among at least a first pair of terminals and a second pair of terminals and/or a switching circuit for applying said alternating current across the selected pair of terminals.
Other features and advantages of embodiments of the present invention will be better understood by reading preferred embodiments thereof with reference to the accompanying drawings.
Drawings
Fig. 1 shows a first embodiment of an antenna component according to the invention;
fig. 2 shows a second embodiment of an antenna component according to the invention;
fig. 3 shows the elements of a possible electronic circuit for a wireless charging device according to the invention.
Detailed Description
Fig. 1 and 2 show anantenna component 2 according to the invention; 102, two possible embodiments.
Anantenna component 2; 102 includes aprinted circuit board 4; 104 and a plurality ofcoil antennas
Here, thecoil antennas circuit board 4. The second side of the printedcircuit board 4, located opposite the first side, may carry other electrical and/or electronic circuitry, such as a reradiating antenna (not shown) in the first embodiment shown in fig. 1, or aconnector 124 such as in the second embodiment shown in fig. 2.
In a first embodiment (as shown in fig. 1), thecoil antennas circuit board 4.
In a second embodiment (as shown in fig. 2), aferrite plate 105 is interposed between the first layer of coil antennas 106,110 and the printedcircuit board 104.
According to a possible variant, the antenna assembly may comprise at least one further antenna layer comprising one or more coil antennas placed on a second layer of coil antennas (the second layer then comprising a plurality of coil antennas).
A first layer ofcoil antennas layer coil antennas
Such stamped-type coil antennas for wireless charging devices have an in-air quality factor of typically less than 60.
Acoil antenna 8 of a second layer; 108 are litz wire coil antennas. Such litz wire coil antennas are coil antennas formed by wound litz wire, i.e. an insulated wire comprising a plurality of strands insulated from each other.
Litz wire coil antennas for wireless charging devices typically have an in-air quality factor of greater than 100 (and thus greater than the in-air quality factor of stamped-type coil antennas).
According to a possible variant, thecoil antenna 8 may be formed by conductive tracks of a flexible printed circuit. Such antennas typically have an in-air no-load quality factor of about 70 (and thus higher than that of the ram-type coil antennas).
As described above, thecoil antenna 8; 108 here thecoil antennas type coil antenna
Precisely, thecoil antennas coil antennas 8; 108 are placed in thecoil antennas coil antennas
According to possible variants, the order of the layers (starting from the printedcircuit board 4; 104) can be changed without departing from the invention.
Anantenna component 2; 102 includes a plurality of pairs ofterminals coil antennas
In the first embodiment shown in fig. 1, theterminals circuit board 4 to which the ends of the associatedcoil antennas
Specifically, thecoil antenna 6 is connected to the first pair ofterminals coil antenna 8 is connected to the second pair ofterminals coil antenna 10 is connected to the third pair ofterminals
In the first embodiment shown in fig. 1, theantenna assembly 2 further comprises aconnector 24, so that each pair ofterminals antenna assembly 2, as further explained below.
With this structure, theantenna assembly 2 is assembled, for example, to a different (main) printed circuit board (not shown) such that thecoil antenna 8 faces a ferrite plate that may be carried by the main printed circuit board, and such that theconnector 24 connects theantenna assembly 2 to the electronic circuitry of the main printed circuit board.
In a second embodiment shown in FIG. 2,coil antenna 106 is connected to a first pair of terminals 112,114,coil antenna 108 is connected to a second pair of terminals 116,118, andcoil antenna 110 is connected to a third pair ofterminals
In this case, the coil antennas 106,108,110 may be connected to the electronic circuitry on the second side of the printedcircuit board 104 through holes in theferrite plate 105, as shown in fig. 2.
Fig. 3 shows elements of a possible electronic circuit for use in thewireless charging device 30 according to the invention.
The electronic circuit is described in the context of the first embodiment shown in fig. 1, but is also applicable to the second embodiment shown in fig. 2.
The electronic circuit is intended to control the current injection in the coil antenna of the antenna assembly. Several methods are known in the art to perform such control of the current injected in the coil antenna, and therefore the electronic circuit now described should be understood as an exemplary and non-limiting solution to perform this control.
In this example, thewireless charging device 30 includes theantenna assembly 2 as described above (or, as a possible variation, theantenna assembly 102 described above), aprocessor 32, adriver circuit 34, and aswitching circuit 36.
Thedriver circuit 34 comprises two terminals P, N for delivering an alternating current, which energizes one of thecoil antennas
The switchingcircuit 36 includes a firstcontrollable switch 38 and a second controllable switch 40 that are simultaneously controlled by a command signal C generated by theprocessor 32.
The firstcontrollable switch 38 connects the first terminal P (of the two terminals P, N of the driver circuit 34) to any one of thefirst terminals antenna component 2 in accordance with a command signal C received from theprocessor 32.
At the same time, the second controllable switch 40 connects the second terminal N (of the two terminals P, N of the driver circuit 34) to any one of thesecond terminals antenna component 2 according to a command signal C received from theprocessor 32.
As shown in fig. 3, this arrangement makes it possible to connect one of thecoil antennas driver circuit 34 such that thedriver circuit 34 excites the coil antenna with an alternating current (the connected coil antenna is determined on the basis of the command signal C received from the processor 32).
The excitation alternating current injected into the connected coil antenna generates an alternating magnetic field, which is used to wirelessly charge the electronic device placed on thewireless charging device 30.
Theprocessor 32 is programmed to select one of thecoil antennas circuit 36 such that it connects the driver circuit 34 (precisely, its terminals P, N) to the selected coil antenna (precisely, the respective pair of terminals associated with the selected coil antenna).
In this regard, theprocessor 32 is programmed, for example, to select a coil antenna that provides the best coupling for charging an electronic device placed on thewireless charging apparatus 30. The coil antenna that provides the best coupling is determined, for example (by the processor 32) based on measurements made in thedriver circuit 34 and transmitted to theprocessor 32.
Claims (9)
1. An antenna assembly, comprising:
-at least a first pair of terminals (12, 14; 112,114) and a second pair of terminals (16, 18; 116, 118);
-a first coil antenna (6; 106) connected to the first pair of terminals, the first coil antenna being stamped;
-a second coil antenna (8; 108) connected to the second pair of terminals,
wherein the first coil antenna and the second coil antenna are respectively arranged in a first antenna layer including at least the first coil antenna and in a second antenna layer including at least the second coil antenna and different from the first antenna layer,
wherein the first coil antenna and the second coil antenna at least partially overlap, and
wherein the second coil antenna has a no-load in-air quality factor greater than the first coil antenna.
2. An antenna assembly according to claim 1, wherein the first antenna layer comprises at least a third coil antenna (10; 110) adjacent to the first coil antenna in the first antenna layer.
3. The antenna assembly of claim 2, wherein the third coil antenna is stamped.
4. The antenna assembly of any one of claims 1-3, wherein the second coil antenna comprises at least one wound insulated wire.
5. The antenna assembly of any one of claims 1-4, wherein the second coil antenna is a litz wire coil antenna.
6. The antenna assembly according to any one of claims 1-3, wherein the second coil antenna is formed by conductive tracks on a flexible printed circuit.
7. The antenna assembly of any one of claims 1-6, wherein the second coil antenna is disposed at least partially overlapping the first coil antenna.
8. A wireless charging device comprising the antenna assembly of any one of claims 1-7.
9. The wireless charging apparatus of any of claim 8, further comprising:
a driver circuit for delivering an alternating current;
a selection circuit for selecting at least one pair of terminals among at least a first pair of terminals and a second pair of terminals;
a switching circuit for applying the alternating current across the selected pair of terminals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389111.0ACN111211407B (en) | 2018-11-21 | 2018-11-21 | Antenna assembly and wireless charging device comprising such an antenna assembly |
| PCT/EP2019/078846WO2020104134A1 (en) | 2018-11-21 | 2019-10-23 | Antenna assembly and wireless charging device comprising such an antenna assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389111.0ACN111211407B (en) | 2018-11-21 | 2018-11-21 | Antenna assembly and wireless charging device comprising such an antenna assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111211407Atrue CN111211407A (en) | 2020-05-29 |
| CN111211407B CN111211407B (en) | 2024-05-28 |
Family
ID=68344833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389111.0AActiveCN111211407B (en) | 2018-11-21 | 2018-11-21 | Antenna assembly and wireless charging device comprising such an antenna assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111211407B (en) |
| WO (1) | WO2020104134A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736412A (en)* | 2020-12-25 | 2021-04-30 | 上海安费诺永亿通讯电子有限公司 | Hybrid structure of wireless charging antenna and NFC antenna, and electronic device |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000165129A (en)* | 1998-11-26 | 2000-06-16 | Denso Corp | Reader/writer for id tag |
| CN101622756A (en)* | 2007-03-09 | 2010-01-06 | 株式会社村田制作所 | Antenna coil and antenna device for substrate mounting |
| CN201804342U (en)* | 2010-09-07 | 2011-04-20 | 珠海天威技术开发有限公司 | Radio frequency identification (RFID) label |
| US20120038445A1 (en)* | 2010-08-12 | 2012-02-16 | Feinics Amatech Nominee Limited | Rfid antenna modules and increasing coupling |
| CN103023159A (en)* | 2011-09-21 | 2013-04-03 | 翰林Postech株式会社 | Wireless power transmission apparatus and wireless power transmission method |
| CN103168405A (en)* | 2010-08-25 | 2013-06-19 | 捷通国际有限公司 | Wireless power supply system and multi-layer shim assembly |
| US20130321230A1 (en)* | 2012-05-29 | 2013-12-05 | Nxp B.V. | Active load modulation antenna |
| CN103515704A (en)* | 2012-06-27 | 2014-01-15 | 比亚迪股份有限公司 | Near field communication antenna and electronic equipment |
| CN104040834A (en)* | 2012-11-02 | 2014-09-10 | 松下电器产业株式会社 | Wireless power transmission system |
| TW201511403A (en)* | 2013-09-09 | 2015-03-16 | Amphenol Taiwan Corp | Flexible multilayer coil device |
| US20150263528A1 (en)* | 2012-08-10 | 2015-09-17 | Panasonic Corporation | Contactless power transmission device |
| CN104979913A (en)* | 2014-04-03 | 2015-10-14 | Lg伊诺特有限公司 | Wireless Power Transmission Equipment |
| CN204809393U (en)* | 2015-06-30 | 2015-11-25 | 比亚迪股份有限公司 | Antenna module |
| US20160261026A1 (en)* | 2015-03-04 | 2016-09-08 | Lg Electronics Inc. | Mobile terminal and coil antenna modul |
| CN107171058A (en)* | 2016-03-07 | 2017-09-15 | 速码波科技股份有限公司 | Antenna module |
| CN107851881A (en)* | 2015-07-06 | 2018-03-27 | Lg伊诺特有限公司 | Wireless antenna for wireless charging and NFC communication and wireless terminal applying same |
| KR20180042194A (en)* | 2018-04-17 | 2018-04-25 | 엘지이노텍 주식회사 | Wiress antenna for wireless charging and nfc communication, and wireless device having the same |
| CN207852936U (en)* | 2018-03-09 | 2018-09-11 | 南京德朗克电子科技有限公司 | A kind of aerial coil based on wireless radio-frequency |
- 2018
- 2018-11-21CNCN201811389111.0Apatent/CN111211407B/enactiveActive
- 2019
- 2019-10-23WOPCT/EP2019/078846patent/WO2020104134A1/ennot_activeCeased
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000165129A (en)* | 1998-11-26 | 2000-06-16 | Denso Corp | Reader/writer for id tag |
| CN101622756A (en)* | 2007-03-09 | 2010-01-06 | 株式会社村田制作所 | Antenna coil and antenna device for substrate mounting |
| US20120038445A1 (en)* | 2010-08-12 | 2012-02-16 | Feinics Amatech Nominee Limited | Rfid antenna modules and increasing coupling |
| CN103168405A (en)* | 2010-08-25 | 2013-06-19 | 捷通国际有限公司 | Wireless power supply system and multi-layer shim assembly |
| CN201804342U (en)* | 2010-09-07 | 2011-04-20 | 珠海天威技术开发有限公司 | Radio frequency identification (RFID) label |
| CN103023159A (en)* | 2011-09-21 | 2013-04-03 | 翰林Postech株式会社 | Wireless power transmission apparatus and wireless power transmission method |
| US20130321230A1 (en)* | 2012-05-29 | 2013-12-05 | Nxp B.V. | Active load modulation antenna |
| CN103515704A (en)* | 2012-06-27 | 2014-01-15 | 比亚迪股份有限公司 | Near field communication antenna and electronic equipment |
| US20150263528A1 (en)* | 2012-08-10 | 2015-09-17 | Panasonic Corporation | Contactless power transmission device |
| CN104040834A (en)* | 2012-11-02 | 2014-09-10 | 松下电器产业株式会社 | Wireless power transmission system |
| TW201511403A (en)* | 2013-09-09 | 2015-03-16 | Amphenol Taiwan Corp | Flexible multilayer coil device |
| CN104979913A (en)* | 2014-04-03 | 2015-10-14 | Lg伊诺特有限公司 | Wireless Power Transmission Equipment |
| US20160261026A1 (en)* | 2015-03-04 | 2016-09-08 | Lg Electronics Inc. | Mobile terminal and coil antenna modul |
| CN204809393U (en)* | 2015-06-30 | 2015-11-25 | 比亚迪股份有限公司 | Antenna module |
| CN107851881A (en)* | 2015-07-06 | 2018-03-27 | Lg伊诺特有限公司 | Wireless antenna for wireless charging and NFC communication and wireless terminal applying same |
| CN107171058A (en)* | 2016-03-07 | 2017-09-15 | 速码波科技股份有限公司 | Antenna module |
| CN207852936U (en)* | 2018-03-09 | 2018-09-11 | 南京德朗克电子科技有限公司 | A kind of aerial coil based on wireless radio-frequency |
| KR20180042194A (en)* | 2018-04-17 | 2018-04-25 | 엘지이노텍 주식회사 | Wiress antenna for wireless charging and nfc communication, and wireless device having the same |
Non-Patent Citations (4)
| Title |
|---|
| FATIHA EL HATMI等: "A Multilayered Coil Antenna for Ingestible Capsule: Near-Field Magnetic Induction Link", IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 25 June 2013 (2013-06-25)* |
| 冯书谊;周勇;周志敏;向毅;: "平面磁芯螺旋结构微电感的性能研究", 电子元件与材料, no. 02* |
| 刘璐;郝鹏;刘维亭;: "基于HFSS和无线充电的线圈天线设计", 舰船科学技术, no. 03* |
| 张欢;廖斌;: "小尺寸多层平面式螺旋天线的仿真设计", no. 05* |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736412A (en)* | 2020-12-25 | 2021-04-30 | 上海安费诺永亿通讯电子有限公司 | Hybrid structure of wireless charging antenna and NFC antenna, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020104134A1 (en) | 2020-05-28 |
| CN111211407B (en) | 2024-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7782267B2 (en) | Antenna coil antenna device | |
| JP4605201B2 (en) | Communication device | |
| US8354971B2 (en) | Antenna device | |
| KR20170005670A (en) | Wiress antenna for wireless charging and nfc communication, and wireless device having the same | |
| KR101378118B1 (en) | Circuit board formed on both sides of the charge coil | |
| KR20210024407A (en) | Wireless charging device, system and control method, charging device and storage medium | |
| KR20150052367A (en) | Wireless apparatus for transmitting power | |
| CN111211407B (en) | Antenna assembly and wireless charging device comprising such an antenna assembly | |
| KR20170129086A (en) | Wiress antenna for wireless charging and nfc communication, and wireless device having the same | |
| KR101398647B1 (en) | Circuit board formed on both sides of the charge coil | |
| KR101922530B1 (en) | Wiress antenna for wireless charging and nfc communication, and wireless device having the same | |
| JP2019004566A (en) | Power transmission device | |
| CN110581362B (en) | Coil antenna and terminal | |
| KR20170072761A (en) | A coil device and an apparatus comprising the same | |
| KR101972053B1 (en) | Wiress antenna for wireless charging and nfc communication, and wireless device having the same | |
| KR20160001366U (en) | Wireless power charging apparatus | |
| KR101684109B1 (en) | Wireless apparatus for transmitting power | |
| CN108711674B (en) | Double-sided board antenna based on bridge type jumper wire | |
| KR102710858B1 (en) | Efficient magnetic substance structure for slim wireless charging module | |
| WO2016186306A1 (en) | Multiband chip antenna, battery pack including same, and mobile device including battery pack | |
| KR102006371B1 (en) | Wiress antenna for wireless charging and nfc communication, and wireless device having the same | |
| WO2024197687A1 (en) | Hybrid coil for wireless power transfer | |
| KR20190092524A (en) | A method and associated charging device for charging a mobile terminal using a mobile device intended to be equipped with a vehicle | |
| WO2024197688A1 (en) | Split planar coil for wireless power transfer | |
| KR20230009263A (en) | Wireless charging module coated with magnetic material on the coil surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |