CN1716691A - Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument - Google Patents
Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument Download PDFInfo
- Publication number
- CN1716691A CN1716691A CNA2005100797819A CN200510079781A CN1716691A CN 1716691 A CN1716691 A CN 1716691A CN A2005100797819 A CNA2005100797819 A CN A2005100797819A CN 200510079781 A CN200510079781 A CN 200510079781A CN 1716691 A CN1716691 A CN 1716691A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- tuning
- wireless device
- wrist
- circuit
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- 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
- H01Q7/005—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 variable reactance for tuning the antenna
Landscapes
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Structure Of Receivers (AREA)
- Electric Clocks (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to a wireless instrument (1) comprising a wristband (2) having a first (2a) and a second (2b) band portions connected to opposite edges of a casing (3), each of the first and second band portions having upper and lower surfaces. A first (4a) and a second (4b) loop antennas are embedded respectively in the first and second band portions and extend between the corresponding upper and lower surfaces, both loop antennas being connected through the opposite edges of the casing to a first (5a) and a second (5b) tuning circuits, the first and second tuning circuits are connected to an antenna receiver (6) arranged in said casing and together in a hybrid manner via an interconnection circuit (7), both tuning circuits being connected partially in parallel and partially in series.
Description
Technical field
The present invention relates to wrist and take wireless device, or rather, relate to a kind of wrist-watch receiver that in its wrist strap, has embedded magnetic loop antennas.In the following description, loop aerial can be understood that to be located substantially on a conplane monocycle lead, and its normal working frequency can provide the basic electric current uniformly along this lead.
Background technology
In recent years, in wrist strap, be embedded with antenna system and become very general with the wireless device of received RF signal.A lot of prior art schemes disclose to be embedded in has a variable-sized antenna assembly of circumferential in the wrist strap, and its wireless device on the arm that is worn over the people uses.Like this, this antenna can be made fully long, to receive the frequency signal that surpasses VHF frequency band (30-300MHz).As shown in Figure 3, the mode that loop aerial 101 can be single forms in wrist strap 102, and it is connected with the shell 103 that wrist is taken wireless device 100, and when the wrist strap fastening, it is via the center fastening structure 104 of wrist strap, and for example, the clasp of wrist strap forms continuous loop.
Yet in these designs, the loop connection at center fastening structure 104 places has had a strong impact on reception.Because this part is easy to fracture damage, is difficult to design the mechanism that works fine can be provided.In addition, wrist strap 102 comprises that typically wrist strap adjusts structure, with the thickness of wrist strap length adjustment to wearer's arm.This adjustment makes the loop-length of antenna change with the wearer, and this will make receivable frequency band also change along with the wearer.
A solution is, wireless device 100 provides extra means for this reason, the antenna gain and the change of resonance frequency that cause because of the antenna loop length variations with compensation, but this scheme is very complicated and bulky, is not suitable for this wireless device.
Document US 5,986, a solution is disclosed in 566, as shown in Figure 4, can stop aforementioned type, because the connection of loop aerial or connection fault and/or the fracture damage that separation causes, and providing a kind of wrist to take wireless device, its receivable frequency band is not subjected to the influence of wearer's arm thickness.
Described wrist is taken wireless device 110 and is comprised: shell 113, center fastening type wrist strap 112.Wrist strap 112 has upper surface 121 and lower surface 122, and the fastening structure 114 at heart place therein, and it is made up of a pair of wrist strap part 112a and 112b, and wherein each all is connected with the end of shell 113.Reception antenna 111 is loaded into a part 112a inside of wrist strap at least with received signal, and antenna 111 is connected with the receiving circuit of shell 113 inside via terminal.According to this document, loop aerial 111 stretches between the upper surface 121 of wrist strap 112 and lower surface 122, and without center fastening structure 114.It may be noted that to receive to need not to connect wrist strap 112 and form loop, when putting on, just can carry out.
Yet according to document US 5,986,566 solution still has some shortcomings.Measurement to above-mentioned antenna structure shows, the non-the best of antenna efficiency, the also non-the best of noise coupling.The part of can not ignore of aerial loss is because people's wrist potato masher antenna is gone back because the dielectric material of wrist strap.Can improve the realization antenna efficiency recently of antenna radiation resistance by reducing aerial loss.Thereby,, can improve antenna efficiency by reducing aerial loss or increasing antenna radiation resistance.
Purpose of the present invention promptly is by ohm that reduces antenna and dielectric absorption and increases antenna radiation resistance, improves antenna efficiency.
Summary of the invention
Main purpose of the present invention is to realize that a kind of wrist that is used for received RF signal takes wireless device, and it has two loop aerials that are loaded into wrist strap inside, and these antenna has improved antenna efficiency.On the one hand, can reduce the influence of aerial loss by two loop aerials that are connected in parallel, on the other hand, two loop aerials can increase antenna radiation resistance by being connected in series.
For realizing above-mentioned main purpose, according to a preferred embodiment of the invention, described wireless device comprises wrist strap, and it has the first and second wrist strap parts that are connected with the opposite side of shell, and each of described first and second wrist straps part all has upper surface and lower surface.First and second loop aerials are embedded in respectively in described first and second wrist straps part, and stretch between described respective upper surfaces and lower surface.Two loop aerials all are connected with first and second tuning circuits by the described opposite side of described shell, wherein, described first and second tuning circuits are connected with aerial receiver in being arranged in described shell, and link together partly in parallel, partly series connection that this tuning circuit is connected to hybrid mode via interconnection circuit.
Description of drawings
Aforementioned and other purpose of the present invention, characteristics and advantage will become more obvious in the following detailed description to preferred embodiment, illustrated as accompanying drawing, wherein:
Fig. 1 takes the cross-sectional view of wireless device for wrist according to the preferred embodiment of the invention;
Fig. 2 is the schematic diagram of the antenna circuit of the enclosure of wireless device according to the preferred embodiment of the invention;
Fig. 3 is the perspective view of the watch style beep-pager of a kind of prior art of having described;
Fig. 4 is the perspective view of the watch style beep-pager of the another kind of prior art described.
Embodiment
As previously mentioned, the present invention relates to a kind of wrist and take wireless device, it arrives in the frequency band of 300MHz 30, is to arrive in the frequency band of 108MHz 88 definitely, utilizes the wireless system for transmitting data received RF signal.The present invention more properly relates to a kind of antenna structure with antenna efficiency of optimization.
At first, show the cross-sectional view that wrist is taken wireless device with reference to Fig. 1.Wireless device 1 comprises wrist strap 2, and it has the first wrist strap part 2a and the second wrist strap part 2b that is connected with the opposite side of shell 3, and each wrist strap partly has upper surface and lower surface.The first loop aerial 4a and the second loop aerial 4b are embedded in respectively among the first wrist strap part 2a and the second wrist strap part 2b, and stretch between corresponding upper surface and lower surface.Loop aerial 4a all is connected with the second tuning circuit 5b with the first tuning circuit 5a respectively by the opposite side of shell 3 with 4b.Tuning circuit all is connected with the aerial receiver of arranging in described shell 36.In addition, all via linking together with hybrid mode by interconnection circuit 7, this interconnection circuit 7 will be referenced Fig. 2 and describe in detail tuning circuit.
Fig. 2 shows the antenna circuit schematic diagram of wireless device enclosure according to the preferred embodiment of the invention.For the total element among Fig. 1, reference number is constant.
Loop aerial 4a and 4b, this with the form of coil to illustrate, it all is connected with aerial receiver 6 with 5b via tuning circuit 5a.In addition, interconnection circuit 7 is provided for interconnection tuning circuit 5a and 5b, and loop aerial 4a and 4b.
As previously mentioned, one object of the present invention is to optimize antenna efficiency.For realizing this purpose, the ratio that reduces between aerial loss and the radiation resistance becomes very important, also therefore reduces aerial loss and increase radiation resistance to become extremely important.As shown in the present, the ohm and the dielectric absorption that reduce antenna can be realized by be connected in parallel loop aerial 4a and 4b.By two loop aerials that are connected in parallel, it is about 50% that loss can reduce, and radiation resistance remains on the level of single annular antenna.Same as shown in the present, increasing radiation resistance can realize by be connected in series two loop aerial 4a and 4b.By being connected in series of this two loop aerials, radiation resistance increases with the factor 4, and loss only be about 2 or the more more factor increase, be about 2 the factor thereby the ratio between aerial loss and the radiation resistance is reduced to.
Be above-mentioned purpose, interconnection circuit 7 is designed to the hybrid mode between two kinds of " extremely " connected modes, and the promptly partly in parallel and mode of series connection partly interconnects to tuning circuit 5a and 5b and loop aerial 4a and 4b.According to preferred embodiment shown in Figure 2, interconnection circuit 7 is a capacitance network, and it comprises the first capacitor C
P1, the second capacitor C
P2With the 3rd capacitor C
s, wherein, the first capacitor C
P1With the second capacitor C
P2Tuning circuit 5a and 5b partly are connected in parallel the 3rd capacitor C
sTuning circuit 5a and 5b partly are connected in series.
According to shown in example, loop aerial 4a and 4b each comfortable two tie point 8a, 9a and 8b, 9b are connected with 5b with corresponding tuning circuit 5a respectively.The first capacitor C
P1One end links to each other with tie point 8a, and the other end links to each other with tie point 8b.The second capacitor C
P2One end links to each other with tie point 9a, and the other end links to each other with tie point 9b.Thereby tuning circuit 5a and 5b are via capacitor C
P1And C
P2Partly be connected in parallel.The 3rd capacitor C
sOne end links to each other with tie point 8b, and the other end links to each other with tie point 9a.Two circuit are via the 3rd capacitor C
sBe connected in series.At last, aerial receiver 6 is connected with 9b with tie point 8a.
As can be seen, can obtain same result, wherein the 3rd capacitor C with a kind of optional mode
sBe connected with 9b with tie point 8a, and aerial receiver 6 is connected with 9a with tie point 8b.
Connect by this mixing, two loop aerials partly are connected in series and partly are connected in parallel, and make aerial loss that the ratio of radiation resistance is significantly reduced like this, and antenna efficiency significantly improve.
In order further to improve antenna efficiency, the consideration of tuning circuit elements is become very important.In fact, because the bandwidth of this type antenna is little, need tuning loop aerial.This tuning available variable capacitance diode is realized.
According to preferred embodiment shown in Figure 2, antenna tuning circuit 5a and 5b are designed to by the variable capacitance diode that is connected in parallel to obtain minimum conduction loss.
Therefore, the first tuning circuit 5a comprises capacitor connected in series 52a and variable capacitance diode 51a, and an end is connected between capacitor 52a and the variable capacitance diode 51a, and the other end is connected in definite voltage V
A Resistor 53a.Resistor 53a provides the steady tuning voltage at the radio frequency reception period to variable capacitance diode 51a, and varactor capacitance changes with this tuning voltage.Therefore, any special receive frequency of antenna all needs different varactor capacitance, and this electric capacity is tuning by described tuning voltage.Voltage V
ADetermine by conventional method, for example, utilize binary search algorithm.
The second tuning circuit 5b is identical with tuning circuit 5a type.It comprises capacitor connected in series 52b and variable capacitance diode 51b, and an end is connected between capacitor 52b and the variable capacitance diode 51b, and the other end is connected in definite voltage V
B Resistor 53b.Resistor 53b provides constant tuning voltage at the radio frequency reception period to variable capacitance diode 51b, and the electric capacity of variable capacitance diode changes with this tuning voltage.Therefore, any special receive frequency of antenna all needs different varactor capacitance, and this electric capacity is tuning by described tuning voltage.Voltage V
BDetermine by conventional method equally, for example, utilize binary search algorithm.
As possibility, each tuning circuit can comprise two variable capacitance diodes, rather than a variable capacitance diode and a capacitor, its with antipole to being connected in series, to optimize the performance of these tuning circuits.
Be to improve the large-signal response of tuning circuit 5a and 5b, variable capacitance diode 51a all is connected with the negation parallel way with 51b, promptly with antipole to mode.Even two tuning circuits are asymmetric, this also is a kind of preferred solution, littler because it introduces loss, and, with comprised two series connection and antipole to the symmetrical tuning circuit of variable capacitance diode compare, it needs element still less.
In addition, can be preferably the capacitor C that tuning circuit 5a and 5b are provided for adjusting its tuning range
T, this capacitor C
TOne end is connected between the capacitor 52a and variable capacitance diode 51a of the first tuning circuit 5a, and the other end is connected between the variable capacitance diode 51b and capacitor 52b of the second tuning circuit 5b.
It may be noted that also loop aerial is preferably rectangle, perhaps the O shape of so-called opening.Its advantage is that two loop aerials are of similar shape to keep symmetry.Yet, will be understood that, as long as itself and wrist strap part fit can use any other loop antenna shape.Two antennas work in 88 to 108MHz frequency band all preferably by utilizing wireless system for transmitting data.
It may be noted that also this wireless device is preferably wrist-watch.
At last, will be understood that the foregoing description has only illustrated some specific embodiments, it has represented principle of the present invention.According to these principles, those skilled in the art can make various other designs easily, especially to the design of tuning circuit and interconnection circuit, and need not to depart from the scope of the present invention and thought.
Claims (8)
1. wireless device, it comprises
Wrist strap has the first and second wrist strap parts that are connected with the opposite side of shell, and each of described first and second wrist straps part has upper surface and lower surface,
The first and second single annular antennas embed respectively in described first and second wrist straps part, and stretch between described respective upper surfaces and lower surface.Two single annular antennas all are connected with first and second tuning circuits by the described opposite side of described shell, wherein,
Described first and second tuning circuits are connected with aerial receiver in being arranged in described shell, and link together with hybrid mode via interconnection circuit, and two tuning circuits are connected to partly in parallel and partly series connection.
2. according to the wireless device of claim 1, wherein, described interconnection circuit is a capacitance network, it comprises first capacitor, second capacitor and the 3rd capacitor, wherein said first capacitor and described second capacitor partly are connected in parallel described first and second tuning circuits, and described the 3rd capacitor partly is connected in series described first and second tuning circuits.
3. according to the wireless device of claim 2, wherein, each of described first and second tuning circuits has first and second tie points, wherein said first and second capacitors are connected with described second tie point with described first tie point of two tuning circuits respectively, and described the 3rd capacitor is connected with described second tie point of described first tuning circuit and be connected with described first tie point of described second tuning circuit, and wherein said aerial receiver is connected between described second tie point of described first tie point of described first tuning circuit and described second tuning circuit.
4. according to the wireless device of claim 1, wherein said first and second tuning circuits are by series capacitors and variable capacitance diode, and one end be connected between described capacitor and the described variable capacitance diode resistor formation that the other end is connected with the voltage of determining.
5. according to the wireless device of claim 4, wherein, capacitor one end that is used to adjust the tuning range of described first and second tuning circuits is connected between the described capacitor and described variable capacitance diode of described first tuning circuit, and the other end is connected between the described capacitor and described variable capacitance diode of described second tuning circuit.
6. according to the wireless device of claim 1, wherein, described two single annular antennas are essentially rectangle or open O shape.
7. according to the wireless device of claim 1, wherein, described two single annular antennas work in 88 to 108MHz frequency band.
8. according to the wireless device of claim 1, wherein, described wireless device is a wrist-watch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04103146A EP1612884B1 (en) | 2004-07-02 | 2004-07-02 | Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument |
| EP04103146.9 | 2004-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1716691A true CN1716691A (en) | 2006-01-04 |
| CN1716691B CN1716691B (en) | 2011-06-01 |
Family
ID=34929287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100797819A Expired - Fee Related CN1716691B (en) | 2004-07-02 | 2005-06-28 | Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1612884B1 (en) |
| JP (1) | JP4644534B2 (en) |
| KR (1) | KR101180206B1 (en) |
| CN (1) | CN1716691B (en) |
| AT (1) | ATE411631T1 (en) |
| DE (1) | DE602004017150D1 (en) |
| HK (1) | HK1086951A1 (en) |
| SG (1) | SG118435A1 (en) |
| TW (1) | TWI360915B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103458640A (en) * | 2013-08-12 | 2013-12-18 | 青岛歌尔声学科技有限公司 | Bandage allowing electronic device to be worn and wearable electronic device |
| CN103943957A (en) * | 2014-04-10 | 2014-07-23 | 信维创科通信技术（北京）有限公司 | Intelligent wrist watch and antenna integrated with watchband buckles of intelligent wrist watch |
| CN105375100A (en) * | 2015-11-12 | 2016-03-02 | 上海圣丹纳电子科技有限公司 | Fixed watch strap antenna structure applicable to watch phone with all-metal watch case |
| CN105428781A (en) * | 2014-09-15 | 2016-03-23 | 三星电子株式会社 | Electronic device |
| WO2017133543A1 (en) * | 2016-02-01 | 2017-08-10 | Huawei Technologies Co., Ltd. | Nfc antenna for wearable application |
| WO2017219898A1 (en) * | 2016-06-23 | 2017-12-28 | 华为技术有限公司 | Near field communication antenna for intelligent wearable product and intelligent wearable product |
| CN107546461A (en) * | 2016-06-23 | 2018-01-05 | 华为终端（东莞）有限公司 | The near-field communication aerial and the wearable product of intelligence of a kind of wearable product of intelligence |
| CN111656291A (en) * | 2018-01-15 | 2020-09-11 | 三星电子株式会社 | Antenna for detecting position of external electronic device and wearable electronic device including the same |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7242359B2 (en) * | 2004-08-18 | 2007-07-10 | Microsoft Corporation | Parallel loop antennas for a mobile electronic device |
| US8538345B2 (en) * | 2007-10-09 | 2013-09-17 | Qualcomm Incorporated | Apparatus including housing incorporating a radiating element of an antenna |
| KR20130084124A (en) | 2012-01-16 | 2013-07-24 | 삼성전자주식회사 | Communication system |
| JP6345396B2 (en) * | 2013-08-27 | 2018-06-20 | シャープ株式会社 | Wireless equipment band and radio |
| JP5598827B1 (en) * | 2013-09-13 | 2014-10-01 | 哲士 中村 | Wireless communication device |
| TWI509891B (en) * | 2013-11-22 | 2015-11-21 | Wistron Neweb Corp | Loop antenna |
| US9786981B2 (en) * | 2014-07-15 | 2017-10-10 | Microsoft Technology Licensing, Llc | Antenna for electronic device |
| TWI553954B (en) * | 2014-07-29 | 2016-10-11 | 鴻海精密工業股份有限公司 | Portable electronic device |
| KR102215995B1 (en) * | 2014-07-31 | 2021-02-16 | 엘지전자 주식회사 | Electronic device |
| DE102015115574A1 (en) | 2014-11-13 | 2016-05-19 | Samsung Electronics Co., Ltd. | Near field communication chip embedded in a portable electronic device and portable electronic device |
| TWM538608U (en) | 2016-12-16 | 2017-03-21 | Asustek Comp Inc | Wearable electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03198532A (en) * | 1989-12-27 | 1991-08-29 | Omron Corp | Bracelet type noncontact recording medium |
| JP3055703B2 (en) * | 1990-02-20 | 2000-06-26 | 日本電信電話株式会社 | Wristwatch receiver |
| JP2580087Y2 (en) * | 1991-11-08 | 1998-09-03 | 日本ビクター株式会社 | Bar antenna circuit of AM stereo broadcast receiver |
| JP2503512Y2 (en) * | 1993-12-27 | 1996-07-03 | 清司 金子 | Repeater antenna device |
| JPH08330826A (en) * | 1995-03-28 | 1996-12-13 | Seiko Epson Corp | Arm-mounted type portable radio equipment |
| JP3624917B2 (en) * | 1995-05-10 | 2005-03-02 | カシオ計算機株式会社 | Antenna for portable wireless device and portable wireless device |
| JP3635544B2 (en) * | 1995-07-20 | 2005-04-06 | カシオ計算機株式会社 | Antenna for portable radio equipment |
| JP3639966B2 (en) * | 1995-07-20 | 2005-04-20 | カシオ計算機株式会社 | Antenna for portable radio equipment |
| JP3801020B2 (en) * | 2001-11-02 | 2006-07-26 | 松下電器産業株式会社 | Tuning antenna |
| EP1315234A1 (en) * | 2001-11-26 | 2003-05-28 | Eta SA Fabriques d'Ebauches | VHF receiving antenna housed in the bracelet of a portable electronic device |
-
2004
- 2004-07-02 AT AT04103146T patent/ATE411631T1/en not_active IP Right Cessation
- 2004-07-02 EP EP04103146A patent/EP1612884B1/en active Active
- 2004-07-02 DE DE602004017150T patent/DE602004017150D1/en active Active
-
2005
- 2005-06-16 TW TW094120028A patent/TWI360915B/en not_active IP Right Cessation
- 2005-06-18 KR KR1020050052707A patent/KR101180206B1/en not_active IP Right Cessation
- 2005-06-20 JP JP2005179031A patent/JP4644534B2/en not_active Expired - Fee Related
- 2005-06-27 SG SG200504843A patent/SG118435A1/en unknown
- 2005-06-28 CN CN2005100797819A patent/CN1716691B/en not_active Expired - Fee Related
-
2006
- 2006-06-16 HK HK06106895.7A patent/HK1086951A1/en not_active IP Right Cessation
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103458640A (en) * | 2013-08-12 | 2013-12-18 | 青岛歌尔声学科技有限公司 | Bandage allowing electronic device to be worn and wearable electronic device |
| CN103943957A (en) * | 2014-04-10 | 2014-07-23 | 信维创科通信技术（北京）有限公司 | Intelligent wrist watch and antenna integrated with watchband buckles of intelligent wrist watch |
| CN103943957B (en) * | 2014-04-10 | 2016-05-04 | 信维创科通信技术（北京）有限公司 | A kind of intelligent watch and bracelet antenna thereof |
| CN105428781A (en) * | 2014-09-15 | 2016-03-23 | 三星电子株式会社 | Electronic device |
| CN105375100A (en) * | 2015-11-12 | 2016-03-02 | 上海圣丹纳电子科技有限公司 | Fixed watch strap antenna structure applicable to watch phone with all-metal watch case |
| RU2708183C1 (en) * | 2016-02-01 | 2019-12-04 | Хуавей Текнолоджиз Ко., Лтд. | Nfc antenna for use in portable devices |
| US9998182B2 (en) | 2016-02-01 | 2018-06-12 | Futurewei Technologies, Inc. | NFC antenna for wearable application |
| WO2017133543A1 (en) * | 2016-02-01 | 2017-08-10 | Huawei Technologies Co., Ltd. | Nfc antenna for wearable application |
| WO2017219898A1 (en) * | 2016-06-23 | 2017-12-28 | 华为技术有限公司 | Near field communication antenna for intelligent wearable product and intelligent wearable product |
| CN107546461A (en) * | 2016-06-23 | 2018-01-05 | 华为终端（东莞）有限公司 | The near-field communication aerial and the wearable product of intelligence of a kind of wearable product of intelligence |
| CN111656291A (en) * | 2018-01-15 | 2020-09-11 | 三星电子株式会社 | Antenna for detecting position of external electronic device and wearable electronic device including the same |
| CN111656291B (en) * | 2018-01-15 | 2022-04-05 | 三星电子株式会社 | Antenna for detecting position of external electronic device and wearable electronic device including the same |
| US11616289B2 (en) | 2018-01-15 | 2023-03-28 | Samsung Electronics Co., Ltd | Antenna for detecting position of external electronic device and wearable electronic device including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1612884A1 (en) | 2006-01-04 |
| JP2006020303A (en) | 2006-01-19 |
| SG118435A1 (en) | 2006-01-27 |
| EP1612884B1 (en) | 2008-10-15 |
| ATE411631T1 (en) | 2008-10-15 |
| TW200616276A (en) | 2006-05-16 |
| JP4644534B2 (en) | 2011-03-02 |
| DE602004017150D1 (en) | 2008-11-27 |
| KR20060049406A (en) | 2006-05-18 |
| HK1086951A1 (en) | 2006-09-29 |
| CN1716691B (en) | 2011-06-01 |
| TWI360915B (en) | 2012-03-21 |
| KR101180206B1 (en) | 2012-09-05 |
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