CN201946745U - Built-in antenna with four frequency ranges and mobile communication terminal thereof - Google Patents
Built-in antenna with four frequency ranges and mobile communication terminal thereof Download PDFInfo
- Publication number
- CN201946745U CN201946745U CN 201020636454 CN201020636454U CN201946745U CN 201946745 U CN201946745 U CN 201946745U CN 201020636454 CN201020636454 CN 201020636454 CN 201020636454 U CN201020636454 U CN 201020636454U CN 201946745 U CN201946745 U CN 201946745U
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- slotted eye
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- circuit board
- printed circuit
- frequency
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Abstract
The utility model discloses a built-in antenna with four frequency ranges and a mobile communication terminal thereof. The built-in antenna comprises an antenna radiation unit, a first slot hole and a second slot hole, wherein the first and second slot holes are arranged on a printed circuit board; the first slot hole is arranged along a direction vertical to the current of the printed circuit board; the second slot hole is arranged between a grounding pin and a feeding pin of the antenna radiation unit; and both the first and second slot holes are open slot holes. As the slot holes are added on the printed circuit board to adjust the low-frequency resonant mode of the printed circuit board, the low-frequency bandwidth of the antenna is enlarged; through a resonant mode of motivating a quarter of the wavelength of the first slot hole, the high-frequency bandwidth is expanded by a parasitic resonance unit which is used as high frequency; and the second slot holes play a role of matching and micro-adjusting the input impedance with the high and low frequencies so that the frequency deviation caused by handholding of users is made up and the characteristics of the mobile communication terminal under the handholding mode are optimized, therefore, the characteristics of relatively large bandwidth is realized in limited space and the development demand of miniaturizing the mobile communication terminal is satisfied.
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 a kind of built-in aerial and mobile communication terminal thereof of four frequency ranges.
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, a kind of built-in aerial and mobile communication terminal thereof of four frequency ranges 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: a kind of built-in aerial of four frequency ranges wherein, comprises antenna radiation unit and is arranged on first slotted eye and second slotted eye on the printed circuit board (PCB); First slotted eye edge and 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 and second slotted eye are the opening slotted eye.
The built-in aerial of described four frequency ranges, 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 provided with along rectangular long limit; First slotted eye is along rectangular minor face setting.
The built-in aerial of described four frequency ranges, wherein: second slotted eye is along rectangular minor face setting.
The built-in aerial of described four frequency ranges, 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 built-in aerial of described four frequency ranges, 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 four frequency ranges, wherein: the length of first slotted eye is less than rectangular bond length.
The built-in aerial of described four frequency ranges, wherein: the length of second slotted eye is less than the length of first slotted eye.
The built-in aerial of described four frequency ranges, 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 four frequency ranges, 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.
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 arranged on first slotted eye and second slotted eye on the printed circuit board (PCB); First slotted eye edge and 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 and second slotted eye are the opening slotted eye.
The built-in aerial of a kind of four frequency ranges provided by the utility model and mobile communication terminal thereof, because having adopted increases slotted eye (comprising first slotted eye and second 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, by encouraging the quarter-wave resonance pattern of first slotted eye self, and, also expanded high frequency bandwidth thus as the spurious resonance unit of high frequency; 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 four frequency range built-in aerials.
Fig. 2 is the planar structure schematic diagrames of the utility model four frequency range built-in aerials in the pcb board part.
Fig. 3 is the schematic top plan view of the utility model four frequency range built-in aerials.
Fig. 4 is the return loss test curve figure of the utility model four frequency range built-in aerials.
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 four frequency ranges of the present utility model, one of its embodiment as shown in Figure 1, comprises antenna radiation unit 120 and is distributed in first slotted eye 160 and second slotted eye 130 on the printed circuit board (PCB) 110; First slotted eye, 160 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 and second slotted eye 130 are the opening slotted eye.
Based on the built-in aerial of above-mentioned four frequency ranges, 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 and second slotted eye 130 on the printed circuit board (PCB) 110; First slotted eye, 160 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 and second slotted eye 130 are the opening slotted eye.
Compare with all channel antenna of the prior art and mobile communication terminal thereof, the built-in aerial of four frequency ranges provided by the utility model and mobile communication terminal thereof, because having adopted increases slotted eye (comprising first slotted eye 160 and second slotted eye 130) 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, by encouraging the quarter-wave resonance pattern of first slotted eye 160 self, and, also expanded high frequency bandwidth thus as the spurious resonance unit of high frequency; 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 four frequency ranges 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.
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, four frequency range built-in aerials of the present utility model can improve the bandwidth of antenna in the following manner: on the one hand by increasing by first slotted eye 160 to change the mode of resonance of printed circuit board (PCB) 110, make it more centre frequency near low-frequency range, and then the low frequency bandwidth of increase antenna, and encourage 1/4th modes of resonance of first slotted eye 160 self, with spurious resonance, improve the high frequency bandwidth of antenna as high frequency band; On the other hand by between the ground connection of planar inverted-F antenna and feed-in pin, second slotted eye 130 being set, with the further adjustment low-and high-frequency input impedance matching of low frequency particularly.
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 intermediate frequency of antenna low frequency, and the bandwidth that it 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 improve 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, also can equivalence become a quarter-wave slot antenna at high band, and slot antenna is as the high band 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, the low frequency and the high frequency bandwidth of built-in aerial have been improved, make the bandwidth of described antenna can cover GSM850, EGSM900, DCS, PCS 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 shows that also as shown in Figure 4, from the test curve of its return loss, the built-in aerial of the utility model four frequency ranges has enough bandwidth really to satisfy the demand of GSM850, EGSM900, DCS, PCS 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; replace; conversion or improvement; for example; antenna radiation unit 120 comprises and singly is not limited to planar inverted F-shape antenna; horizontal rectangle is equal to replacement or the like with rectangular longitudinally; and all these increases and decreases; replace; 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 a frequency range is characterized in that, comprises antenna radiation unit and is arranged on first slotted eye and second slotted eye on the printed circuit board (PCB); First slotted eye edge and 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 and second slotted eye are the opening slotted eye.
2. the built-in aerial of four frequency ranges according to claim 1 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 is along rectangular minor face setting.
3. the built-in aerial of four frequency ranges according to claim 2 is characterized in that: second slotted eye is along rectangular minor face setting.
4. the built-in aerial of four frequency ranges according to claim 2 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.
5. the built-in aerial of four frequency ranges according to claim 4 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 four frequency ranges according to claim 2 is characterized in that: the length of first slotted eye is less than rectangular bond length.
7. the built-in aerial of four frequency ranges according to claim 1 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 four frequency ranges according to claim 1 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 four frequency ranges according to claim 1 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.
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 arranged on first slotted eye and second slotted eye on the printed circuit board (PCB); First slotted eye edge and 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 and second slotted eye are the opening slotted eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020636454 CN201946745U (en) | 2010-12-01 | 2010-12-01 | Built-in antenna with four frequency ranges and mobile communication terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020636454 CN201946745U (en) | 2010-12-01 | 2010-12-01 | Built-in antenna with four frequency ranges and mobile communication terminal thereof |
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| Publication Number | Publication Date |
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| CN201946745U true CN201946745U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020636454 Expired - Fee Related CN201946745U (en) | 2010-12-01 | 2010-12-01 | Built-in antenna with four frequency ranges and mobile communication terminal thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544712A (en) * | 2012-02-07 | 2012-07-04 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency band built-in antenna |
| CN103227360A (en) * | 2013-03-27 | 2013-07-31 | 深圳市中兴移动通信有限公司 | Antenna device and mobile terminal |
| CN103369731A (en) * | 2012-04-01 | 2013-10-23 | 深圳光启创新技术有限公司 | Router |
| CN105322280A (en) * | 2015-05-28 | 2016-02-10 | 维沃移动通信有限公司 | Antenna of mobile device and mobile device |
| CN106972256A (en) * | 2017-01-19 | 2017-07-21 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
| CN112134005A (en) * | 2019-06-25 | 2020-12-25 | 歌尔科技有限公司 | Dipole antenna and wireless device |
| 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 201020636454 patent/CN201946745U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544712A (en) * | 2012-02-07 | 2012-07-04 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency band built-in antenna |
| CN102544712B (en) * | 2012-02-07 | 2014-11-05 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency band built-in antenna |
| CN103369731A (en) * | 2012-04-01 | 2013-10-23 | 深圳光启创新技术有限公司 | Router |
| CN103369731B (en) * | 2012-04-01 | 2017-10-31 | 深圳光启创新技术有限公司 | A kind of router |
| CN103227360A (en) * | 2013-03-27 | 2013-07-31 | 深圳市中兴移动通信有限公司 | Antenna device and mobile terminal |
| CN103227360B (en) * | 2013-03-27 | 2017-06-30 | 努比亚技术有限公司 | Antenna assembly and mobile terminal |
| CN105322280A (en) * | 2015-05-28 | 2016-02-10 | 维沃移动通信有限公司 | Antenna of mobile device and mobile device |
| CN105322280B (en) * | 2015-05-28 | 2019-07-26 | 维沃移动通信有限公司 | A kind of antenna and mobile device of mobile device |
| CN106972256A (en) * | 2017-01-19 | 2017-07-21 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
| CN106972256B (en) * | 2017-01-19 | 2020-04-17 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
| CN112134005A (en) * | 2019-06-25 | 2020-12-25 | 歌尔科技有限公司 | Dipole antenna and wireless device |
| 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 |
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| 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: 20110824 Termination date: 20121201 |