CN201918501U - Internal antenna with five frequency bands and bluetooth and mobile communication terminal with internal antenna - Google Patents
Internal antenna with five frequency bands and bluetooth and mobile communication terminal with internal antenna Download PDFInfo
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- CN201918501U CN201918501U CN 201020636406 CN201020636406U CN201918501U CN 201918501 U CN201918501 U CN 201918501U CN 201020636406 CN201020636406 CN 201020636406 CN 201020636406 U CN201020636406 U CN 201020636406U CN 201918501 U CN201918501 U CN 201918501U
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- slotted eye
- slot
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- circuit board
- printed circuit
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Abstract
The utility model discloses an internal antenna with five frequency bands and bluetooth and a mobile communication terminal with the internal antenna. The internal antenna comprises an antenna radiation unit, a first slot, a second slot and a third slot, wherein the first slot, the second slot and the third slot are distributed on a printed circuit board; the first slot and the third slot are both arranged along the direction which is vertical to the current of the printed circuit board; the second slot is arranged between a grounding pin and a feeding pin; and the first slot, the second slot and the third slot are all opening slots. As the slots are additionally arranged on the printed circuit board, the slots approach the centre frequency of the low frequency branch part of the antenna the low frequency bandwidth of the antenna is enlarged by exciting the printed circuit board to generate resonance; the high frequency branch part of the antenna excites the third slot to generate resonance by capacitive coupling, so that the resonance of the third slot together with the high frequency resonance of the antenna and the high frequency spurious resonance of the first slot form new high frequency work bandwidth; the second slot plays the roles of matching and fine-tuning for the input impedance with the high frequency and the low frequency to make up for the frequency deviation caused by hand holding, thereby optimizing the characteristic of a mobile communication terminal.
Description
Technical field
The utility model relates to the wide frequency antenna field of wireless communication apparatus, and in particular, what improvement related to is the built-in aerial and the mobile communication terminal thereof of a kind of five frequency ranges and bluetooth.
Background technology
Along with the miniaturization of the mobile communication transceiver terminal development to miniaturization, particularly mobile phone, always needing the littler antenna of size in the future.In field of mobile telephony, initial external antenna promptly stretches out the very short section apparatus of shell.This external antenna has shortcoming and is, and is comparatively responsive to mechanical structure, fractures easily.Therefore, from design angle, antenna should be hidden or be integrated in the shell of communicator as much as possible.Such built-in aerial or the antenna integrated total bandwidth that must on its position, can cover each radio channel.
At present, the communication standard of multiple standard requires antenna integrated covering frequence scope from 824MHz to 2170MHz; Particularly there is certain problem in the handheld mobile communication terminal to this, promptly may cause antenna to produce the resonance shift of varying strength during conversing, and this is because the position difference of handheld mobile communication terminal in user's hand is caused; And this resonant frequency shift must pass through bandwidth compensation, and promptly the bandwidth of antenna is wideer than required frequency band, with compensation because the loss that is brought during resonant frequency shift.And in the prior art, all channel antenna often all is the loss that causes in the time of could satisfying resonant frequency shift when its physical dimension is bigger, and still, this miniaturization developing direction obvious and mobile communication terminal runs in the opposite direction.
Therefore, prior art still haves much room for improvement and develops.
The utility model content
The purpose of this utility model is, the built-in aerial and the mobile communication terminal thereof of a kind of five frequency ranges and bluetooth is provided, and can realize big relatively bandwidth characteristic in limited space, to satisfy the growth requirement of mobile communication terminal miniaturization.
The technical solution of the utility model is as follows: the built-in aerial of a kind of five frequency ranges and bluetooth wherein, comprises antenna radiation unit and is distributed in first slotted eye, second slotted eye and the 3rd slotted eye on the printed circuit board (PCB); First slotted eye and the 3rd slotted eye all along with the perpendicular direction setting of printed circuit board (PCB) electric current; Second slotted eye is arranged between the grounding leg and feed-in pin of antenna radiation unit; First slotted eye, second slotted eye and the 3rd slotted eye are the opening slotted eye.
The built-in aerial of described five frequency ranges and bluetooth, wherein: the shape of printed circuit board (PCB) is rectangle; The line of the grounding leg of antenna radiation unit and feed-in pin is along rectangular long limit; First slotted eye and the 3rd slotted eye are all along rectangular minor face.
The built-in aerial of described five frequency ranges and bluetooth, wherein: second slotted eye is along rectangular minor face.
The built-in aerial of described five frequency ranges and bluetooth, wherein: the openend of first slotted eye is arranged on the rectangular long limit of the grounding leg of antenna radiation unit and feed-in pin one side; The openend of the 3rd slotted eye is arranged on the rectangular minor face of the grounding leg of antenna radiation unit and feed-in pin one side.
The built-in aerial of described five frequency ranges and bluetooth, wherein: the openend of the openend of second slotted eye and first slotted eye is positioned on the rectangular same long limit.
The built-in aerial of described five frequency ranges and bluetooth, wherein: the length of first slotted eye is less than rectangular bond length setting; The length of the 3rd slotted eye is less than the length setting of first slotted eye.
The built-in aerial of described five frequency ranges and bluetooth, wherein: the length of second slotted eye is less than the length setting of first slotted eye.
The built-in aerial of described five frequency ranges and bluetooth, wherein: antenna radiation unit comprises the low frequency branch part; First slotted eye and the view field of low frequency branch part on printed circuit board (PCB) overlap.
The built-in aerial of described five frequency ranges and bluetooth, wherein: antenna radiation unit comprises the high-frequency branch part; Second slotted eye and the view field of high-frequency branch part on printed circuit board (PCB) overlap; The view field of open end on printed circuit board (PCB) of the 3rd slotted eye and high-frequency branch part overlaps.
A kind of mobile communication terminal comprises shell and setting printed circuit board (PCB) and built-in aerial in the enclosure; Wherein, built-in aerial comprises antenna radiation unit and is distributed in first slotted eye, second slotted eye and the 3rd slotted eye on the printed circuit board (PCB); First slotted eye and the 3rd slotted eye all along with the perpendicular direction setting of printed circuit board (PCB) electric current; Second slotted eye is arranged between the grounding leg and feed-in pin of antenna radiation unit; First slotted eye, second slotted eye and the 3rd slotted eye are the opening slotted eye.
The built-in aerial and the mobile communication terminal thereof of a kind of five frequency ranges provided by the utility model and bluetooth, because having adopted increases slotted eye (comprising first slotted eye, second slotted eye and the 3rd slotted eye) on printed circuit board (PCB), to adjust its low frequency resonant modes, make it centre frequency near antenna low frequency branch part, produce resonance by the antenna excitation printed circuit board (PCB), increased the low frequency bandwidth of antenna thus; Simultaneously, the antenna high-frequency branch partly produces resonance by capacitive coupling excitation the 3rd slotted eye, has formed new high-frequency work bandwidth jointly with the high-frequency resonant of antenna self and the high frequency spurious resonance of first slotted eye, has also expanded high frequency bandwidth thus; In addition, between the grounding leg of antenna and second slotted eye between the feed-in pin, the input impedance of low-and high-frequency has also been played the effect of coupling fine setting, further expanded high frequency bandwidth, to remedy the frequency shift (FS) influence that is produced because of the user is hand-held, optimized the characteristic of mobile communication terminal under hand-held mode; Thereby in limited space, realized big relatively bandwidth characteristic, satisfied the growth requirement of mobile communication terminal miniaturization.
Description of drawings
Fig. 1 is the perspective view of the utility model five frequency ranges and Bluetooth built-in antenna.
Fig. 2 is the utility model five frequency ranges and the Bluetooth built-in antenna planar structure schematic diagram in the pcb board part.
Fig. 3 is the schematic top plan view of the utility model five frequency ranges and Bluetooth built-in antenna.
Fig. 4 is the return loss test curve figure of the utility model five frequency ranges and Bluetooth built-in antenna.
Embodiment
Below with reference to accompanying drawing, embodiment of the present utility model and embodiment are described in detail, described specific embodiment in order to explain the utility model, is not to be used to limit embodiment of the present utility model only.
The built-in aerial of a kind of five frequency ranges of the present utility model and bluetooth, one of its embodiment as shown in Figure 1, comprises antenna radiation unit 120 and is distributed in first slotted eye 160, second slotted eye 130 and the 3rd slotted eye 170 on the printed circuit board (PCB) 110; First slotted eye 160 and the 3rd slotted eye 170 all along with the perpendicular direction setting of printed circuit board (PCB) 110 electric currents; Second slotted eye 130 is arranged between the grounding leg 140 and feed-in pin 150 of antenna radiation unit 120; First slotted eye 160, second slotted eye 130 and and the 3rd slotted eye 170 be the opening slotted eye.
Based on the built-in aerial of above-mentioned five frequency ranges and bluetooth, the utility model has also proposed a kind of mobile communication terminal, comprises shell and setting printed circuit board (PCB) 110 and built-in aerial in the enclosure; Wherein, built-in aerial comprises antenna radiation unit 120 and is arranged on first slotted eye 160, second slotted eye 130 and the 3rd slotted eye 170 on the printed circuit board (PCB) 110; First slotted eye 160 and the 3rd slotted eye 170 edges and the perpendicular direction setting of printed circuit board (PCB) 110 electric currents; Second slotted eye 130 is arranged between the grounding leg 140 and feed-in pin 150 of antenna radiation unit 120; First slotted eye 160, second slotted eye 130 and the 3rd slotted eye 170 are the opening slotted eye.
Compare with all channel antenna of the prior art and mobile communication terminal thereof, the built-in aerial and the mobile communication terminal thereof of five frequency ranges provided by the utility model and bluetooth, because having adopted increases slotted eye (comprising first slotted eye 160, second slotted eye 130 and the 3rd slotted eye 170) on printed circuit board (PCB) 110, to adjust its low frequency resonant modes, make it centre frequency near antenna low frequency branch part, produce resonance by antenna excitation printed circuit board (PCB) 110, increased the low frequency bandwidth of antenna thus; Simultaneously, the antenna high-frequency branch partly produces resonance by capacitive coupling excitation the 3rd slotted eye 170, has formed new high-frequency work bandwidth jointly with the high-frequency resonant of antenna self and the high frequency spurious resonance of first slotted eye 160, has also expanded high frequency bandwidth thus; In addition, between the grounding leg 140 of antenna and second slotted eye 130 between the feed-in pin 150, the input impedance of low-and high-frequency has also been played the effect of coupling fine setting, further expanded high frequency bandwidth, to remedy the frequency shift (FS) influence that is produced because of the user is hand-held, optimized the characteristic of mobile communication terminal under hand-held mode; Thereby in limited space, realized big relatively bandwidth characteristic, satisfied the growth requirement of mobile communication terminal miniaturization.
Is example with planar inverted F-shape antenna as antenna radiation unit 120, in the preferred implementation of the built-in aerial of the utility model five frequency ranges and bluetooth and mobile communication terminal thereof, as shown in Figure 1, the component of two terminal open circuits is arranged on the antenna radiation unit 120, and its operation principle is a quarter-wave resonance; What outside broad length was short is the high-frequency branch part, and what inboard more long narrow degree was long is the low frequency branch part.Because of antenna radiation unit 120 is subjected to the restriction of size, the bandwidth of itself resonance generally can't satisfy the demand of multiple communication standard to wireless channel, especially in low-frequency range; So in the case, antenna radiation unit 120 can be able to be regarded as the exciting unit of an excitation printed circuit board (PCB) 110, and utilize printed circuit board (PCB) 110 larger-size advantages, make it become the mode of resonance of low-frequency range.
Preferably, as shown in Figure 2, the shape of printed circuit board (PCB) 110 can be rectangle longitudinally; The grounding leg 140 of antenna radiation unit 120 is provided with along this rectangular long limit with the line of feed-in pin 150; First slotted eye 160 is along this rectangular minor face setting.
Because the longitudinal current on the printed circuit board (PCB) 110 promptly along the electric current of this rectangular length direction, often has higher radiation efficiency, and the radiance of low-frequency range is also mainly determined by the longitudinal current of printed circuit board (PCB) 110.So change the resonance frequency of the longitudinal current on the printed circuit board (PCB) 110, make it more can to improve radiation efficiency on the one hand near the centre frequency of low-frequency range, can also increase the bandwidth of low frequency on the other hand.
Concrete, can with the perpendicular direction of longitudinal current on load first slotted eye 160, change current direction, force electric current loop to flow through around first slotted eye 160, be equivalent to the length of the longitudinal current that extended.For example, the direction of first slotted eye 160 is paralleled setting with the Width of printed circuit board (PCB) 110, but and not exclusively block printed circuit board (PCB) 110.At this moment, first slotted eye 160 is under the low frequency branch of antenna radiation unit 120 partly encourages, with resonance equivalence on circuit of antenna radiation unit 120 self is the in parallel of two resonant circuits, its bandwidth can cover GSM850 and GSM900 frequency range, and GSM herein (the Global System for Mobile Communications) meaning is a global system for mobile communications.
Further, as shown in Figure 2, on the grounding leg 140 that the openend of first slotted eye 160 is arranged on antenna radiation unit 120 and the rectangular long limit of feed-in pin 150 1 sides.The length of first slotted eye 160 is no more than rectangular bond length setting.
Concrete, the length of first slotted eye 160 can be according to the quarter-wave design that approaches high band, one section short circuit, one section open circuit, make its 1/4th resonance frequency be positioned at the working band of high band, can help to increase the bandwidth of high band by the resonance of its generation, so that its bandwidth can cover DCS1800 (Digital Cellular System at 1800MHz, the 1800MHz Digital Cellular System) and PCS (Personal Communications System operating in the 1900MHz band, 1900MHz person communication system) frequency range.
Further, as shown in Figure 3, first slotted eye 160 can partially overlap with the low frequency branch of antenna radiation unit 120 on short transverse, to reach the purpose of carrying out the effective capacitance coupling with antenna radiation unit 120; In other words, first position of slotted eye 160 on printed circuit board (PCB) 110, can overlap with the view field of low frequency branch part on printed circuit board (PCB) 110, also can be positioned at the view field of low frequency branch part on printed circuit board (PCB) 110 of antenna radiation unit 120.
Further, as shown in Figure 3, the 3rd slotted eye 170 can be along this rectangular minor face setting, and perhaps, the 3rd slotted eye 170 also can be provided with by parallel first slotted eye 160; On the grounding leg 140 that the openend of the 3rd slotted eye 170 is arranged on antenna radiation unit 120 and the rectangular minor face of feed-in pin 150 1 sides; The length of the 3rd slotted eye 170 is less than the length setting of first slotted eye 160; The 3rd slotted eye 170 is overlapped with the view field of open end on printed circuit board (PCB) 110 of high-frequency branch part.
Concrete, the openend of the 3rd slotted eye 170 is arranged on the top of printed circuit board (PCB) 110, overlaps at the open end of the high-frequency branch of short transverse and antenna radiation unit 2.Thus, the 3rd slotted eye 170 resonance are at UMTS BAND1,2,5,8 reception frequency range, and UMTS herein (Universal Mobile Telecommunications System), the meaning is a universal mobile telecommunications system.The high-frequency branch part of antenna radiation unit 120 can encourage the resonance current of the 3rd slotted eye 170 by the capacitive coupling, form new high-frequency work bandwidth with the high-frequency resonant of the high-frequency resonant of antenna radiation unit 120 self and first slotted eye 160 is common, its high frequency bandwidth can cover 2.5GHz, can satisfy the demand of Bluetooth communication to wireless channel.
Preferably, as shown in Figure 2, second slotted eye 130 also can be along rectangular minor face setting.The openend of the openend of second slotted eye 130 and first slotted eye 160 can be positioned on the rectangular same long limit.The length of second slotted eye 130 can be less than the length setting of first slotted eye 160.
Further, as shown in Figure 3, second slotted eye 130 can partially overlap with the high-frequency branch of antenna radiation unit 120 on short transverse, to reach the purpose of carrying out the effective capacitance coupling with antenna radiation unit 120; In other words, second position of slotted eye 130 on printed circuit board (PCB) 110, can overlap with the view field of high-frequency branch part on printed circuit board (PCB) 110, also can be positioned at the view field of high-frequency branch part on printed circuit board (PCB) 110 of antenna radiation unit 120.
Why second slotted eye 130 is arranged between the feed-in pin 150 of the grounding leg 1404 of antenna radiation unit 120 and antenna radiation unit 120 coupling that its role is to carry out input impedance; Suitably adjust the length of second slotted eye 130, can play the effect of fine setting to the input impedance of low-and high-frequency, especially the match and regulate effect of the input impedance of high band, can further expand the bandwidth of high frequency, to remedy because the characteristic of mobile communication terminal under hand-held mode optimized in the frequency shift (FS) that the user causes when hand-held.
This shows, the built-in aerial of five frequency ranges of the present utility model and bluetooth can improve the bandwidth of antenna in the following manner: on the one hand by increasing by first slotted eye 160 to adjust the mode of resonance of printed circuit board (PCB) 110, make it more centre frequency, and then increase the low frequency bandwidth of antenna near low-frequency range; On the other hand by the mode of resonance of excitation the 3rd slotted eye 170 and 1/4th modes of resonance of first slotted eye 160 self, to improve the high frequency bandwidth of antenna; By at the ground connection 140 of planar inverted-F antenna and second slotted eye 130 of 150 introducings of feed-in pin, can further carry out the adjustment of low-and high-frequency input impedance matching in addition.
And the bandwidth performance of antenna low frequency is substantially by the size of printed circuit board (PCB) 110 decision, particularly length; Built-in aerial is because size is less, and the bandwidth that himself resonance covered far can not satisfy the demand of communication standard to channel; Yet the frequency at printed circuit board (PCB) 110 its mode of resonance places is more near the centre frequency of antenna low frequency, and the bandwidth that is produced is often greater than the bandwidth of built-in aerial self resonance.
Therefore, effectively having encouraged the mode of resonance of printed circuit board (PCB) 110 is the effective ways that increase antenna low frequency bandwidth.Thus, on perpendicular to printed circuit board (PCB) 110 senses of current, open first slotted eye 160, prolong current path, can reduce the resonance frequency of printed circuit board (PCB) 110, make it more centre frequency, thereby improved the low-frequency band wide region of built-in aerial near low frequency.
In addition, this is positioned at first slotted eye 160 on the printed circuit board (PCB) 110, can equivalence become a quarter-wave slot antenna at high band.Slot antenna is as the parasitic element of built-in aerial, and the resonance of generation can improve the high frequency bandwidth of antenna.
In a word, the antenna of described mobile communication terminal is under limited space, utilize the slotted eye on the printed circuit board (PCB) 110, improved the low frequency and the high frequency bandwidth of built-in aerial, make the bandwidth of described antenna can cover GSM850, EGSM900, DCS, PCS, UMTS band 1,2,5,8, and the bluetooth frequency range, bandwidth after the expansion can compensate the frequency shift (FS) that is caused by hand holding state, thereby has optimized the performance of mobile communication terminal under hand holding state.
The result of experimental test also shows, as shown in Figure 4, and from the test curve of its return loss, the built-in aerial of the utility model five frequency ranges and bluetooth has enough bandwidth really to satisfy GSM850, EGSM900, DCS, PCS, UMTS BAND1,2,5,8 and the demand of bluetooth frequency range.
Should be understood that; the above only is preferred embodiment of the present utility model; be not sufficient to limit the technical solution of the utility model; for those of ordinary skills; within spirit of the present utility model and principle; can be increased and decreased according to the above description, replacement, conversion or improvement; for example; antenna radiation unit comprises and singly is not limited to planar inverted F-shape antenna; and all these increases and decreases, replacement, conversion or improve after technical scheme, all should belong to the protection range of the utility model claims.
Claims (10)
1. the built-in aerial of frequency range and bluetooth is characterized in that, comprises antenna radiation unit and is distributed in first slotted eye, second slotted eye and the 3rd slotted eye on the printed circuit board (PCB); First slotted eye and the 3rd slotted eye all along with the perpendicular direction setting of printed circuit board (PCB) electric current; Second slotted eye is arranged between the grounding leg and feed-in pin of antenna radiation unit; First slotted eye, second slotted eye and the 3rd slotted eye are the opening slotted eye.
2. the built-in aerial of five frequency ranges according to claim 1 and bluetooth is characterized in that: the shape of printed circuit board (PCB) is rectangle; The line of the grounding leg of antenna radiation unit and feed-in pin is provided with along rectangular long limit; First slotted eye and the 3rd slotted eye are all along rectangular minor face setting.
3. the built-in aerial of five frequency ranges according to claim 2 and bluetooth is characterized in that: second slotted eye is along rectangular minor face setting.
4. the built-in aerial of five frequency ranges according to claim 2 and bluetooth is characterized in that: the openend of first slotted eye is arranged on the rectangular long limit of the grounding leg of antenna radiation unit and feed-in pin one side; The openend of the 3rd slotted eye is arranged on the rectangular minor face of the grounding leg of antenna radiation unit and feed-in pin one side.
5. the built-in aerial of five frequency ranges according to claim 2 and bluetooth is characterized in that: the openend of the openend of second slotted eye and first slotted eye is positioned on the rectangular same long limit.
6. the built-in aerial of five frequency ranges according to claim 2 and bluetooth is characterized in that: the length of first slotted eye is less than rectangular bond length; The length of the 3rd slotted eye is less than the length of first slotted eye.
7. the built-in aerial of five frequency ranges according to claim 1 and bluetooth is characterized in that: the length of second slotted eye is less than the length of first slotted eye.
8. the built-in aerial of five frequency ranges according to claim 1 and bluetooth is characterized in that: antenna radiation unit comprises the low frequency branch part; First slotted eye and the view field of low frequency branch part on printed circuit board (PCB) overlap.
9. the built-in aerial of five frequency ranges according to claim 1 and bluetooth is characterized in that: antenna radiation unit comprises the high-frequency branch part; Second slotted eye and the view field of high-frequency branch part on printed circuit board (PCB) overlap; The view field of open end on printed circuit board (PCB) of the 3rd slotted eye and high-frequency branch part overlaps.
10. a mobile communication terminal comprises shell and setting printed circuit board (PCB) and built-in aerial in the enclosure; It is characterized in that built-in aerial comprises antenna radiation unit and is distributed in first slotted eye, second slotted eye and the 3rd slotted eye on the printed circuit board (PCB); First slotted eye and the 3rd slotted eye all along with the perpendicular direction setting of printed circuit board (PCB) electric current; Second slotted eye is arranged between the grounding leg and feed-in pin of antenna radiation unit; First slotted eye, second slotted eye and the 3rd slotted eye are the opening slotted eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020636406 CN201918501U (en) | 2010-12-01 | 2010-12-01 | Internal antenna with five frequency bands and bluetooth and mobile communication terminal with internal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020636406 CN201918501U (en) | 2010-12-01 | 2010-12-01 | Internal antenna with five frequency bands and bluetooth and mobile communication terminal with internal antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918501U true CN201918501U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020636406 Expired - Fee Related CN201918501U (en) | 2010-12-01 | 2010-12-01 | Internal antenna with five frequency bands and bluetooth and mobile communication terminal with internal antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN201918501U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762490A (en) * | 2014-12-19 | 2016-07-13 | 联想(北京)有限公司 | Antenna |
| CN107394348A (en) * | 2017-06-01 | 2017-11-24 | 惠州Tcl移动通信有限公司 | A kind of antenna module and mobile terminal |
| CN113517565A (en) * | 2021-05-06 | 2021-10-19 | 苏州大学 | Three-frequency MIMO antenna applied to 5G mobile terminal |
-
2010
- 2010-12-01 CN CN 201020636406 patent/CN201918501U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762490A (en) * | 2014-12-19 | 2016-07-13 | 联想(北京)有限公司 | Antenna |
| CN107394348A (en) * | 2017-06-01 | 2017-11-24 | 惠州Tcl移动通信有限公司 | A kind of antenna module and mobile terminal |
| CN113517565A (en) * | 2021-05-06 | 2021-10-19 | 苏州大学 | Three-frequency MIMO antenna applied to 5G mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20121201 |