CN105301954A - High-communication-quality intelligent wristwatch - Google Patents
High-communication-quality intelligent wristwatch Download PDFInfo
- Publication number
- CN105301954A CN105301954A CN201510650784.7A CN201510650784A CN105301954A CN 105301954 A CN105301954 A CN 105301954A CN 201510650784 A CN201510650784 A CN 201510650784A CN 105301954 A CN105301954 A CN 105301954A
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- China
- Prior art keywords
- radiation arm
- layer
- pcb substrate
- oscillator arms
- setting layer
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- 238000004891 communication Methods 0.000 claims abstract description 58
- 238000002955 isolation Methods 0.000 claims description 62
- 230000005855 radiation Effects 0.000 claims description 61
- 230000003071 parasitic effect Effects 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 28
- 238000007373 indentation Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 10
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G21/00—Input or output devices integrated in time-pieces
- G04G21/08—Touch switches specially adapted for time-pieces
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses a high-communication-quality intelligent wristwatch which comprises a watchcase. The watchcase is provided with the following components: a screen setting layer, a circuit setting layer, a battery setting layer, an insulating board setting layer, a communication antenna setting layer and a bottom case; wherein the screen setting layer, the circuit setting layer, the battery setting layer, the insulating board setting layer, the communication antenna setting layer and the bottom case are arranged from top to bottom. The screen setting layer is provided with a touch display screen; the circuit setting layer is provided with a circuit device; the battery setting layer is internally provided with a battery which is used for supplying electric power to the circuit device and the touch display screen. The insulating board setting layer is provided with an insulating disc. The communication antenna setting layer is provided with a communication antenna. Through reasonable structure setting, the antenna is arranged at the downmost layer. The insulating device is added between the antenna and the circuit device. Therefore the wristwatch can be connected with outside devices through the communication signal in a relatively good manner.
Description
Technical field
The present invention relates to a kind of high communication quality intelligent wrist-watch.
Background technology
At present, wrist-watch is more and more intelligent, and various functions is also gradually improved, such as current phone wrist-watch, very universal, and for example present at present fitness campaign wrist-watch, and it generally possesses pulse situation etc. that pulse wave detector is used for detecting user; But wrist-watch itself is a pick-up unit just, if he needs to communicate with the external world just to need good communication structure to arrange, often wrist-watch due to body worn, most of the time is blocked by clothes again, bottom surface is again near arm, therefore design bad wrist-watch, its correspondence with foreign country ability is non-constant.
Summary of the invention
The object of the invention is to overcome above-described shortcoming, a kind of high communication quality intelligent wrist-watch is provided.
For achieving the above object, concrete scheme of the present invention is as follows: a kind of high communication quality intelligent wrist-watch, include watchcase, described watchcase is respectively equipped with that screen arranges layer, circuit arranges layer, battery arranges layer, division board arranges layer, communication antenna arranges layer, drain pan from top to bottom; Screen arranges that layer is provided with touch display screen, circuit arranges that layer is provided with circuit arrangement, battery arranges in layer the battery be provided with for powering for circuit arrangement and touch display screen; Described division board arranges layer and is provided with trap-out tray; Described communication antenna arranges layer and is provided with communication antenna;
Described circuit arrangement includes primary controller, the pulse wave detector be connected with primary controller signal and the communicator for communicating with the external world; Described touch display screen is connected with primary controller signal, and described communicator is connected with primary controller and communication antenna signal respectively.
Wherein, described communication antenna includes the first circular PCB substrate, is located at the microstrip antenna of the first PCB substrate end face; Described microstrip antenna includes size identical and symmetrical first radiating element and the second radiating element; Each radiating element includes the first radiation arm in arcuation, described first radiation arm extends leg-of-mutton second radiation arm to center, described first radiation arm also extends leg-of-mutton 3rd radiation arm to center, described second radiation arm is located in the region that the 3rd radiation arm and the first radiation arm surround; Also include the 4th trapezoidal radiation arm extended to center from the first radiation arm, described 3rd radiation arm is located in the region that the 4th radiation arm and the first radiation arm surround; The trapezoidal straight flange of described 4th radiation arm is provided with multiple semicircular isolation breach; Described first radiating element includes the first parasitic oscillator arms that hypotenuse extends obliquely from of its 4th radiation arm, and the free end of described first parasitic oscillator arms has also laterally extended the second parasitic oscillator arms; Described second radiating element includes the trixenie oscillator arms of extending obliquely from a lower hypotenuse of its 4th radiation arm, and the free end of described trixenie oscillator arms has also laterally extended the 4th parasitic oscillator arms;
Be provided with the parasitic oscillator unit of rectangle between described two radiating elements, the limit, two, left and right of the parasitic oscillator unit of described rectangle is zigzag, and the centre of the parasitic oscillator unit of described rectangle is provided with multiple rectangular indentation side by side;
The described first PCB substrate back side is provided with two feed coupling apertures corresponding with two the first oscillator arms respectively;
Described trap-out tray is the trap-out tray of disc shaped, and described trap-out tray comprises the second PCB substrate, and is located at the circular magnetic flow metering-orifice in the second PCB substrate, end face in described second PCB substrate is also provided with laterally zygomorphic two isolation strip, each described isolation strip includes lateral isolation bar, the two ends of described lateral isolation bar are provided with the first vertical isolation bar, extend from lateral isolation bar between two the first vertical isolation bars and have and the first vertical isolation bar the second vertical isolation bar in the same way, described second vertical isolation bar is shorter than the length of the first vertical isolation bar, extend from lateral isolation bar in the middle of described two the second vertical isolation bars and have and the first vertical isolation bar the 3rd spacer bar in the same way, described 3rd spacer bar is shorter than the length of the second vertical isolation bar.
Wherein, described second radiation arm is identical by the angular dimension at paracentral angle with the 3rd radiation arm by the angle at paracentral angle, and is all greater than 15 ° and is less than 60 °.
Wherein, if the distance between rectangular indentation is M; If the quantity of rectangular indentation is N; If the second parasitic oscillator arms is identical with the length of the 4th parasitic oscillator arms and length is all set to K; Described K=M*0.25*N; The unit of described M and K is millimeter.
Wherein, what described second radiation arm leaned on the angle at paracentral angle is 35 degree.
Wherein, the edge of the end face of described first PCB substrate is provided with circle first cage ring, and the edge of the bottom surface of the first PCB substrate is provided with circle second cage ring.
Wherein, concrete described M is 0.8mm; Described N is 48, and the length of described K is 9.6mm.
Wherein, described circuit arrangement is also provided with for the bluetooth module with extraneous Bluetooth communication, and described bluetooth module is connected with primary controller signal;
Wherein, described circuit arrangement is also provided with the Big Dipper locating device for locating, and described Big Dipper locating device is connected with primary controller signal;
Beneficial effect of the present invention is: by rational vibrational power flow, antenna is located at bottom one deck, increases spacer assembly again between antenna and circuit arrangement, and therefore signal of communication can be connected with the external world preferably.
Accompanying drawing explanation
Fig. 1 is the sectional view of watchcase of the present invention;
Fig. 2 is the schematic diagram of circuit arrangement of the present invention;
Fig. 3 is the vertical view of communication antenna of the present invention;
Fig. 4 is the vertical view of trap-out tray of the present invention;
Fig. 5 is the upward view of the first PCB substrate of the present invention;
Fig. 6 is the vertical view of communication antenna of the present invention;
Fig. 7 is the frequency range emulation testing figure that communication antenna of the present invention and trap-out tray do not conform to timing;
Fig. 8 is the frequency range emulation testing figure that communication antenna of the present invention and trap-out tray close timing;
Fig. 9 is the directional diagram of communication antenna of the present invention;
Description of reference numerals in Fig. 1 to Fig. 9:
1-watchcase; 11-touch display screen; 12-circuit arranges layer; 13-battery arranges layer; 14-division board arranges layer; 15-communication antenna arranges layer; 16-drain pan;
2-primary controller; 3-communicator; 4-pulse wave detector; 5-Big Dipper locating device; 6-bluetooth module;
71-first PCB substrate; 711-first cage ring; 712-first radiation arm; 713-second radiation arm; 714-the 3rd radiation arm; 715-the 4th radiation arm; The parasitic oscillator arms of 716-first; The parasitic oscillator arms of 717-second; The parasitic oscillator unit of 721-rectangle; 722-rectangular indentation; 731-trixenie oscillator arms; The parasitic oscillator arms of 732-the 4th; 741-second cage ring; 742-feed coupling aperture;
8-second PCB substrate; 81-lateral isolation bar; 82-first vertical isolation bar; 83-second vertical isolation bar; The straight spacer bar of 84-the 3rd.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, is not practical range of the present invention is confined to this.
Embodiment 1:
As shown in Figures 1 to 9, one height communication quality intelligent wrist-watch described in the present embodiment, include watchcase 1, described watchcase 1 is respectively equipped with that screen arranges layer, circuit arranges layer 12, battery arranges layer 13, division board arranges layer 14, communication antenna arranges layer 15, drain pan 16 from top to bottom; Screen arranges that layer is provided with touch display screen 11, circuit arranges that layer 12 is provided with circuit arrangement, battery arranges in layer 13 battery be provided with for powering for circuit arrangement and touch display screen 11; Described division board arranges layer 14 and is provided with trap-out tray; Described communication antenna arranges layer 15 and is provided with communication antenna; Described circuit arrangement includes primary controller 2, the pulse wave detector 4 be connected with primary controller 2 signal and the communicator 3 for communicating with the external world; Described touch display screen 11 is connected with primary controller 2 signal, and described communicator 3 is connected with primary controller 2 and communication antenna signal respectively.By rational vibrational power flow, antenna is located at bottom one deck, increases spacer assembly again between antenna and circuit arrangement, therefore signal of communication can be connected with the external world preferably.
One height communication quality intelligent wrist-watch described in the present embodiment, described communication antenna includes the first circular PCB substrate 71, is located at the microstrip antenna of the first PCB substrate 71 end face, described microstrip antenna includes size identical and symmetrical first radiating element and the second radiating element, each radiating element includes the first radiation arm 712 in arcuation, described first radiation arm 712 extends leg-of-mutton second radiation arm 713 to center, described first radiation arm 712 also extends leg-of-mutton 3rd radiation arm 714 to center, described second radiation arm 713 is located in the region that the 3rd radiation arm 714 and the first radiation arm 712 surround, also include the 4th trapezoidal radiation arm 715 extended to center from the first radiation arm 712, described 3rd radiation arm 714 is located in the region that the 4th radiation arm 715 and the first radiation arm 712 surround, the trapezoidal straight flange of described 4th radiation arm 715 is provided with multiple semicircular isolation breach, described first radiating element includes the first parasitic oscillator arms 716 that hypotenuse extends obliquely from of its 4th radiation arm 715, and the free end of described first parasitic oscillator arms 716 has also laterally extended the second parasitic oscillator arms 717, described second radiating element includes the trixenie oscillator arms 731 of extending obliquely from a lower hypotenuse of its 4th radiation arm 715, and the free end of described trixenie oscillator arms 731 has also laterally extended the 4th parasitic oscillator arms 732, be provided with the parasitic oscillator unit 721 of rectangle between described two radiating elements, the limit, two, left and right of the parasitic oscillator unit 721 of described rectangle is zigzag, and the centre of the parasitic oscillator unit 721 of described rectangle is provided with multiple rectangular indentation 722 side by side, described first PCB substrate 71 back side is provided with two feed coupling apertures 742 corresponding with two the first oscillator arms respectively, described trap-out tray is the trap-out tray of disc shaped, and described trap-out tray comprises the second PCB substrate 8, and is located at the circular magnetic flow metering-orifice in the second PCB substrate 8, end face in described second PCB substrate 8 is also provided with laterally zygomorphic two isolation strip, each described isolation strip includes lateral isolation bar 81, the two ends of described lateral isolation bar 81 are provided with the first vertical isolation bar 82, extend from lateral isolation bar 81 between two the first vertical isolation bars 82 and have and the first vertical isolation bar 82 the second vertical isolation bar 83 in the same way, the length of described second vertical isolation bar 83 to the first vertical isolation bar 82 is short, extend from lateral isolation bar 81 in the middle of described two the second vertical isolation bars 83 and have and the first vertical isolation bar 82 the 3rd spacer bar in the same way, described 3rd spacer bar is shorter than the length of the second vertical isolation bar 83.By being not less than the microstrip circuit structural design of 550 times, and by under being not less than 500 l-G simulation tests and parameter adjustment, the partition plate structure finally determining above-mentioned antenna structure and coordinate with it, this antenna possesses wider frequency range and preferably isolation and directivity and gain performance when coordinating with division board, meet request for utilization completely, improve the communication performance of wrist-watch.
Especially when this structural insulated panel of removing or placement plain metal division board, as Fig. 7, this beamwidth of antenna available frequency range is still up to 1.7GHz to 2.65GHz; Substantially meet the requirement of communications band, its gain is also higher, and in frequency band, average gain is greater than 8.952dBi; Meet actual use needs.The design of this shape division board is also drawn by emulation and continuous test design, wherein, screw stereo antenna is comprised when this division board being placed other prior art antennas and coordinating, its matching is not high, and isolation performance strengthens not obvious, when testing ordinary antennas, this division board in cooperation, average gain increases 0.01-0.15dBi or does not increase, and isolation performance is constant, and frequency range is without change.And reality test with test before emulation in can learn, test when the communication antenna in this programme coordinates with the division board of this programme, the bandwidth of the communication antenna of this programme, isolation, gain aspect all exceed Antenna Design when not adding division board, and the simulation value after wherein coordinating is as Fig. 8.This integrated antenna system bandwidth available frequency range reaches 1.6GHz to 2.85GHz; Its gain also obviously increases, and in frequency band, average gain is greater than 9.4dBi, compares rising about 0.3dBi; If isolation in its isolation figure frequency band in addition, isolation performance better, as Fig. 8, can find out that in S3 isolation is greater than 25.5dB in frequency range.Its directivity, as described in Figure 9, it is omni-directional antenna.
Embodiment 2:
One height communication quality intelligent wrist-watch described in the present embodiment, be with the difference of embodiment 1, be provided with concrete preferred parameter, make antenna structure more stable, every communication performance is more reliable and stable, does not beat; Described second radiation arm 713 is identical by the angular dimension at paracentral angle with the 3rd radiation arm 714 by the angle at paracentral angle, and is all greater than 15 ° and is less than 60 °.One height communication quality intelligent wrist-watch described in the present embodiment, if the distance between rectangular indentation 722 is M; If the quantity of rectangular indentation 722 is N; If the second parasitic oscillator arms 717 is identical with the length of the 4th parasitic oscillator arms 732 and length is all set to K; Described K=M*0.25*N; The unit of described M and K is millimeter.After arranging above-mentioned parameter restriction, found by great many of experiments and emulation, its gain is more stable, and isolation also remains on higher level.Above-mentioned parameter is constantly being tested and is drawing in adjustment, and it is the most stable and design parameter that is performance the best, and concrete actual knot HFSS15 software of testing calculates, and this total system beamwidth of antenna available frequency range is at 1.6GHz to 2.8GHz internal frequency modulation; In frequency band, average gain is greater than 9.35dBi, and impedance reduces; In frequency range, isolation is greater than 26dB; Find in reality test, the change of external environment, as temperature, influence of magnetic field change within the specific limits, the changes in amplitude of such as temperature about 10 degree, when adopting above-mentioned parameter and special value, very by force, frequency range conservation degree is better for its stability.
Preferably, the one height communication quality intelligent wrist-watch described in the present embodiment, what described second radiation arm 713 leaned on the angle at paracentral angle is 35 degree.One height communication quality intelligent wrist-watch described in the present embodiment, the edge that the edge of the end face of described first PCB substrate 71 is provided with the bottom surface of circle first cage ring 711, first PCB substrate 71 is provided with circle second cage ring 741.For increasing isolation bottom the first PCB substrate 71.One height communication quality intelligent wrist-watch described in the present embodiment, concrete described M is 0.8mm; Described N is 48, and the length of described K is 9.6mm.
One height communication quality intelligent wrist-watch described in the present embodiment, described circuit arrangement is also provided with for the bluetooth module 6 with extraneous Bluetooth communication, and described bluetooth module 6 is connected with primary controller 2 signal.For getting around third party's network, direct and target device carries out two-way communication.
One height communication quality intelligent wrist-watch described in the present embodiment, described circuit arrangement is also provided with the Big Dipper locating device 5 for locating, and described Big Dipper locating device 5 is connected with primary controller 2 signal; Adopt China's Big Dipper locating device 5, precision is high, power saving, effective.
The above is only a preferred embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in the protection domain of patented claim of the present invention.
Claims (7)
1. one kind high communication quality intelligent wrist-watch, include watchcase (1), it is characterized in that: described watchcase (1) is respectively equipped with that screen arranges layer, circuit arranges layer (12), battery arranges layer (13), division board arranges layer (14), communication antenna arranges layer (15), drain pan (16) from top to bottom; Screen arranges that layer is provided with touch display screen (11), circuit arranges in layer (12) is provided with circuit arrangement, battery arranges layer (13) battery be provided with for powering for circuit arrangement and touch display screen (11); Described division board arranges layer (14) and is provided with trap-out tray; Described communication antenna arranges layer (15) and is provided with communication antenna;
Described circuit arrangement includes primary controller (2), the pulse wave detector (4) be connected with primary controller (2) signal and the communicator (3) for communicating with the external world; Described touch display screen (11) is connected with primary controller (2) signal, and described communicator (3) is connected with primary controller (2) and communication antenna signal respectively;
Described circuit arrangement is also provided with for the bluetooth module (6) with extraneous Bluetooth communication, and described bluetooth module (6) is connected with primary controller (2) signal.
2. a kind of high communication quality intelligent wrist-watch according to claim 1, is characterized in that: described communication antenna includes circular the first PCB substrate (71), is located at the microstrip antenna of the first PCB substrate (71) end face; Described microstrip antenna includes size identical and symmetrical first radiating element and the second radiating element; Each radiating element includes the first radiation arm (712) in arcuation, described first radiation arm (712) extends leg-of-mutton second radiation arm (713) to center, described first radiation arm (712) also extends leg-of-mutton 3rd radiation arm (714) to center, described second radiation arm (713) is located in the region that the 3rd radiation arm (714) and the first radiation arm (712) surround; Also include the 4th trapezoidal radiation arm (715) extended to center from the first radiation arm (712), described 3rd radiation arm (714) is located in the region that the 4th radiation arm (715) and the first radiation arm (712) surround; The trapezoidal straight flange of described 4th radiation arm (715) is provided with multiple semicircular isolation breach; Described first radiating element includes the first parasitic oscillator arms (716) that hypotenuse extends obliquely from of its 4th radiation arm (715), and the free end of described first parasitic oscillator arms (716) has also laterally extended the second parasitic oscillator arms (717); Described second radiating element includes the trixenie oscillator arms (731) of extending obliquely from a lower hypotenuse of its 4th radiation arm (715), and the free end of described trixenie oscillator arms (731) has also laterally extended the 4th parasitic oscillator arms (732);
Be provided with the parasitic oscillator unit (721) of rectangle between described two radiating elements, the limit, two, left and right of the parasitic oscillator unit (721) of described rectangle is zigzag, and the centre of the parasitic oscillator unit (721) of described rectangle is provided with multiple rectangular indentation (722) side by side;
Described first PCB substrate (71) back side is provided with two feed coupling apertures (742) corresponding with two the first oscillator arms respectively;
Described trap-out tray is the trap-out tray of disc shaped, and described trap-out tray comprises the second PCB substrate (8), and is located at the circular magnetic flow metering-orifice in the second PCB substrate (8), end face on described second PCB substrate (8) is also provided with laterally zygomorphic two isolation strip, each described isolation strip includes lateral isolation bar (81), the two ends of described lateral isolation bar (81) are provided with the first vertical isolation bar (82), extend from lateral isolation bar (81) between two the first vertical isolation bars (82) and have and the first vertical isolation bar (82) the second vertical isolation bar (83) in the same way, described second vertical isolation bar (83) is shorter than the length of the first vertical isolation bar (82), extend from lateral isolation bar (81) in the middle of described two the second vertical isolation bars (83) and have and the first vertical isolation bar (82) the 3rd spacer bar in the same way, described 3rd spacer bar is shorter than the length of the second vertical isolation bar (83).
3. a kind of high communication quality intelligent wrist-watch according to claim 2, it is characterized in that: described second radiation arm (713) is identical by the angular dimension at paracentral angle with the 3rd radiation arm (714) by the angle at paracentral angle, and is all greater than 15 ° and is less than 60 °.
4. a kind of high communication quality intelligent wrist-watch according to claim 2, is characterized in that: set distance between rectangular indentation (722) as M; If the quantity of rectangular indentation (722) is N; If the second parasitic oscillator arms (717) is identical with the length of the 4th parasitic oscillator arms (732) and length is all set to K; Described K=M*0.25*N; The unit of described M and K is millimeter.
5. a kind of high communication quality intelligent wrist-watch according to claim 3, is characterized in that: described second radiation arm (713) by paracentral angle angle be 35 degree.
6. a kind of high communication quality intelligent wrist-watch according to claim 2, it is characterized in that: the edge of the end face of described first PCB substrate (71) is provided with circle first cage ring (711), the edge of the bottom surface of the first PCB substrate (71) is provided with circle second cage ring (741).
7. a kind of high communication quality intelligent wrist-watch according to claim 4, is characterized in that: concrete described M is 0.8mm; Described N is 48, and the length of described K is 9.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650784.7A CN105301954B (en) | 2015-10-10 | 2015-10-10 | A kind of high communication quality intelligent wrist-watch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650784.7A CN105301954B (en) | 2015-10-10 | 2015-10-10 | A kind of high communication quality intelligent wrist-watch |
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| Publication Number | Publication Date |
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| CN105301954A true CN105301954A (en) | 2016-02-03 |
| CN105301954B CN105301954B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510650784.7A Active CN105301954B (en) | 2015-10-10 | 2015-10-10 | A kind of high communication quality intelligent wrist-watch |
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| CN105955010A (en) * | 2016-06-18 | 2016-09-21 | 欧志洪 | Intelligent bracelet watch capable of positioning |
| US10181640B2 (en) | 2016-08-11 | 2019-01-15 | Apple Inc. | Electronic device antennas |
| US10367252B2 (en) | 2016-08-11 | 2019-07-30 | Apple Inc. | Broadband antenna |
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| CN1577188A (en) * | 2003-07-25 | 2005-02-09 | 精工爱普生株式会社 | Electronic timepiece with an internal antenna |
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| CN105955010A (en) * | 2016-06-18 | 2016-09-21 | 欧志洪 | Intelligent bracelet watch capable of positioning |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105301954B (en) | 2016-12-07 |
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