CN104103892A - Mobile communication device - Google Patents
Mobile communication device Download PDFInfo
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- CN104103892A CN104103892A CN201310120648.8A CN201310120648A CN104103892A CN 104103892 A CN104103892 A CN 104103892A CN 201310120648 A CN201310120648 A CN 201310120648A CN 104103892 A CN104103892 A CN 104103892A
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 40
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 2
- 230000003071 parasitic effect Effects 0.000 abstract 2
- 230000001808 coupling effect Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Abstract
The invention provides a mobile communication device which includes a grounding element and an antenna element. The antenna element includes a main body part provided with a feed point and a parasitic part which extends out from the grounding element. The parasitic part includes a grounding section, a first extension section and a second extension section. The grounding section faces the main body part. The first extension section and the second extension section extend out from the grounding section, and the first extension section is spaced with the main body part for a coupling distance. A first low-frequency resonance mode of the antenna element is motivated through the main body part, the first extension section and the grounding section, and a second low-frequency resonance mode of the antenna element is motivated through the second extension section and the grounding section, wherein the first low-frequency resonance mode and the second low-frequency resonance mode are used for expanding a low-frequency operation frequency band of the low-frequency antenna element.
Description
Technical field
The invention relates to a kind of mobile communications device, and particularly relevant for a kind of mobile communications device of built-in antenna element.
Background technology
The 4th third-generation mobile communication (4G) long-term evolution (Long Term Evolution, LTE) standard has just like become the new criteria of next generation mobile communication device.Make a general survey of the use frequency range of current various countries, LTEBand17 (704MHz～746MHz) is little by little subject to the use of various countries.Therefore, if mobile communications device is supported the 3rd third-generation mobile communication (3G) and LTE standard simultaneously, in mobile communications device, the scope of the low frequency operational frequency bands of antenna will contain 960MHz from 704MHz, and the scope of the high-frequency operation frequency band of antenna will be from 1710MHz to 2170MHz.
Yet with regard to existing antenna frame, the size of antenna is mainly to depend on its frequency of operation.Therefore,, along with the expansion of the frequency range of operational frequency bands, the size of existing antenna is often also just increasing, and then has limited the development of mobile communications device in microminiaturization.In other words, how in the situation that the operational frequency bands of extended antenna, taking into account the size of antenna, has been a mobile communications device large problem in design.
Summary of the invention
The invention provides a kind of mobile communications device, utilize coupling effect between the first extension of section and body to produce the first low-frequency resonance mode of antenna element, and by the first low-frequency resonance mode and the second low-frequency resonance mode, carry out the low frequency operational frequency bands of extended antenna element.Therefore, can be in the situation that the operational frequency bands of extended antenna element be taken into account the size of antenna element, and then contribute to mobile communications device in microminiaturized development.
Mobile communications device of the present invention, comprises earth element and antenna element, and antenna element comprises having the body of load point and from the extended Parasitica of earth element.Wherein, Parasitica comprises ground connection section, the first extension of section and the second extension of section.The first end of ground connection section is electrically connected to earth element, and the second end of ground connection section is with respect to body.Second end of the first extension of section along predetermined direction from ground connection section extends, and with the body coupling space of being separated by.Antenna element inspires the first low-frequency resonance mode by body, the first extension of section and ground connection section.The second extension of section extends from the second end of ground connection section along the inverse direction of predetermined direction, and antenna element inspires the second low-frequency resonance mode by ground connection section and the second extension of section.In addition, antenna element is by the first low-frequency resonance mode and the second low-frequency resonance Modal Expansion low frequency operational frequency bands.
In one embodiment of this invention, above-mentioned body comprises feed-in section, the first radiant section and the second radiant section.The first end of feed-in section has load point.The first radiant section is electrically connected the second end of feed-in section, and with respect to first end and first extension of section of ground connection section, wherein the first radiant section and the first extension of section coupling space of being separated by.The second radiant section is electrically connected the second end of feed-in section, and with the both sides of the first radiation area section at feed-in section.Wherein, antenna element utilizes feed-in section and the first radiant section to receive and dispatch the signal under the first high-frequency operation frequency band, and utilizes feed-in section and the second radiant section to receive and dispatch the signal under the second high-frequency operation frequency band.
Based on above-mentioned, the present invention utilizes coupling effect between the first extension of section and body to produce the first low-frequency resonance mode of antenna element the size of therefore reducing antenna element.In addition, the present invention utilizes the first low-frequency resonance mode and the second low-frequency resonance mode to produce the low frequency operational frequency bands of antenna element, and the therefore low frequency operational frequency bands of extended antenna element.Thus, the present invention can be in the situation that the operational frequency bands of extended antenna element be taken into account the size of antenna element, and then contributes to mobile communications device in microminiaturized development.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the mobile communications device of one embodiment of the invention;
Fig. 2 is in order to the structural representation of the low-frequency resonance mode of antenna element to be described;
Fig. 3 is the structural representation according to the mobile communications device of another embodiment of the present invention;
Fig. 4 is in order to illustrate the structural representation of resonance mode of the body of antenna element;
Fig. 5 is the structural representation according to the mobile communications device of another embodiment of the present invention;
Fig. 6 is the simulation schematic diagram of the voltage standing wave ratio of antenna element in Fig. 5 embodiment;
Fig. 7 is the antenna element of Fig. 5 embodiment and the antenna efficiency figure of existing 3G antenna.
Description of reference numerals:
100,300,500: mobile communications device;
110: earth element;
120: antenna element;
121: body;
122: Parasitica;
130: ground connection section;
140,340: the first extensions of section;
150: the second extensions of section;
160: feed-in section;
170: the first radiant sections;
180: the second radiant sections;
FP1: load point;
D1: coupling space;
PT21, PT22, PT31, PT41, PT42, PT51: resonance path;
510: the three extensions of section;
710,720: the curve in antenna efficiency figure.
Embodiment
Fig. 1 is the structural representation according to the mobile communications device of one embodiment of the invention.With reference to Fig. 1, mobile communications device 100 comprises earth element 110 and antenna element 120, and antenna element 120 comprises body 121 and Parasitica 122.Wherein, body has a load point FP1, and Parasitica 122 is to extend from earth element 110.
Further, Parasitica 122 comprises ground connection section 130, the first extension of section 140 and the second extension of section 150.Body 121 comprises feed-in section 160, the first radiant section 170 and the second radiant section 180.With regard to the body 121 of antenna element 120, the first end of feed-in section 160 has load point FP1.The first radiant section 170 and the second radiant section 180 are electrically connected the second end a difference both sides at feed-in section 160 of feed-in section 160.In addition, the first radiant section 170 and Parasitica 122 be position in the same side of feed-in section 160, and the first radiant section 170 is with respect to the second end and first extension of section 140 of ground connection section 130.
With regard to the Parasitica 122 of antenna element 120, the first end of ground connection section 130 is electrically connected to earth element 110, and the second end of ground connection section 130 is with respect to body 121.The first extension of section 140 and the second extension of section 150 are electrically connected to the second end a difference both sides at ground connection section 130 of ground connection section 130.From another angle, the first extension of section 140 is that the second end along a predetermined direction from ground connection section extends, and the second extension of section 150 is to extend from the second end of ground connection section 130 along the inverse direction of described predetermined direction.Wherein, described predetermined direction is the direction near the load point FP1 of body 121.
Ground connection section 130 comprises at least one bending, to cause the load point FP1 of the first end adjacent body portion 121 of access area section 130.In addition, in configured in one piece, the first extension of section 140 and the first radiant section 170 in the body 121 coupling space D1 of being separated by.Moreover the first 140 of extensions of section are between feed-in section 160 and ground connection section 130, and the first extension of section 140 is parallel to the first radiant section 170.
With regard to the operation mechanism of antenna element 120, the transceiver (not shown) in mobile communications device 100 can transmit a FD feed to the load point FP1 of antenna element 120, with the therefore body 121 of excitation antenna element 120.In addition, from the signal of body 121, can be coupled to Parasitica 122, and then excite Parasitica 122.Therefore, antenna element 120 can be inspired one first low-frequency resonance mode with ground connection section 130, and can be inspired one second low-frequency resonance mode by ground connection section 130 and the second extension of section 150 by body 121, the first extension of section 140.
Fig. 2 is in order to the structural representation of the low-frequency resonance mode of antenna element to be described.Please refer to Fig. 2, the resonance path under the first low-frequency resonance mode of antenna element 120 is as shown in the label PT21 of Fig. 2, and the resonance path under the second low-frequency resonance mode of antenna element 120 is as shown in the label PT22 of Fig. 2.In addition, antenna element 120 is all to produce the first low-frequency resonance mode and the second low-frequency resonance mode based on quarter-wave resonance mechanism.In one embodiment, the first low-frequency resonance mode contains the frequency band of 824MHz～960MHz, and the second low-frequency resonance mode contains the frequency band of 704MHz～824MHz.
In other words, by the first low-frequency resonance mode and the second low-frequency resonance mode, the frequency range of the low frequency operational frequency bands of antenna element 120 can contain 704MHz～960MHz.In addition, because the first low-frequency resonance mode is mainly to produce by the coupling effect between the first extension of section 140 and body 121, therefore the actual physics length of resonance path PT21 can be less than quarter-wave, and then reach the object of the size of reduction antenna element 120.
It is worth mentioning that, the actual physics length of resonance path PT21 is the stiffness of coupling being relevant between the first extension of section 140 and body 121.Wherein, if the coupling between the first extension of section 140 and body 121 is stronger, the actual physics length of resonance path PT21 is shorter, and then can further reduce the size of antenna element 120.
For instance, Fig. 3 is the structural representation according to the mobile communications device of another embodiment of the present invention.Wherein, the structure of the cited mobile communications device 300 of Fig. 3 substantially with the structural similarity of the cited mobile communications device 100 of Fig. 1.The main difference part of Fig. 3 and Fig. 1 two embodiment is, the first extension of section 340 in Fig. 3 embodiment comprises at least one bending, to cause the feed-in section 160 of body 121 with respect to the first extension of section 340, and feed-in section 160 and the first extension of section 340 coupling space D1 of being separated by.Therefore, with regard to the resonance path of the first low-frequency resonance mode, because the coupling effect between feed-in section 160 and the first extension of section 340 contributes to strengthen the coupling between the first extension of section 140 and body 121, so in Fig. 3, the actual physics length of resonance path PT31 is less than the actual physics length of resonance path PT21 in Fig. 2.Thus, can further reduce the size of antenna element 120.In addition, as Figure 1-3, the second extension of section 150 comprises at least one bending, and then also reaches the object of the size of reduction antenna element 120.
Continue referring to Fig. 1.The body 121 of antenna element 120 to be shaped as class T-shaped, and body 121 is essentially the unipole antenna (monopole antenna) of double frequency.For instance, Fig. 4 is in order to illustrate the structural representation of resonance mode of the body of antenna element.As shown in Figure 4, feed-in section 160 and the first radiant section 170 be in order to resonance path PT41 to be provided, and feed-in section 160 and the second radiant section 180 are in order to provide resonance path PT42.Therefore, antenna element 120 can utilize resonance path PT41 to produce a resonance mode, and can receive and dispatch the signal under the first high-frequency operation frequency band by high order harmonic component (harmonic).In addition, antenna element 120 can utilize resonance path PT42 to produce another resonance mode, and therefore receive and dispatch the signal under the second high-frequency operation frequency band.Wherein, the length of resonance path PT42 is 1/4 times of wavelength of signal under the second high-frequency operation frequency band.
In addition, in another embodiment, antenna element 120 also can utilize the resonance path in Parasitica 122, carrys out the frequency range of the high-frequency operation frequency band of extended antenna element 120 further.For instance, Fig. 5 is the structural representation according to the mobile communications device of another embodiment of the present invention.Wherein, the structure of the cited mobile communications device 500 of Fig. 5 substantially with the structural similarity of the cited mobile communications device 100 of Fig. 1.The main difference part of Fig. 5 and Fig. 1 two embodiment is, the Parasitica 122 of Fig. 5 also comprises the 3rd extension of section 510.Particularly, the 3rd extension of section 510 is to extend from ground connection section 130, and with respect to the second extension of section 150.In addition, the 3rd extension of section 510 and ground connection section 130 are in order to provide a resonance path P T51.Therefore, antenna element 120 can utilize resonance path PT51 to produce a resonance mode, and therefore receive and dispatch the signal under third high frequency operational frequency bands.Wherein, the length of resonance path PT51 is under operational frequency bands 1/4 times of the wavelength of signal frequently of third high.
It is worth mentioning that, this area has the length of conventionally knowing the knowledgeable's capable of regulating the first radiant section 170, the second radiant section 180 and the 3rd extension of section 510, changes the frequency range of the high-frequency operation frequency band of antenna element 120.For example, in one embodiment, the first high-frequency operation frequency band can be for example to contain GSM1800 frequency band, and the second high-frequency operation frequency band can be for example to contain UMTS2100 frequency band, and third high frequency operational frequency bands can be for example to contain GSM1900 frequency band.That is, by first, to the third high combination of operational frequency bands frequently, the high-frequency operation frequency band of antenna element 120 can be contained 1710MHz～2170MHz.Moreover in another embodiment, the combination of the first high-frequency operation frequency band and the second high-frequency operation frequency band can be for example to contain tri-frequency bands of GSM1800/GSM1900/UMTS2100, and third high frequency operational frequency bands can be for example to contain GPS frequency band.
Moreover current frequency range on the market contains the antenna of 704MHz～960MHz and 1710MHz～2170MHz, its volume is 80mm * 13mm * 3mm easily.In addition, the volume of existing 3G antenna is also 62mm * 11mm * 2.5mm mostly.Yet the antenna element 120 of take in Fig. 5 embodiment of the present invention is example, the operational frequency bands of antenna element 120 contains 704MHz～960MHz and 1710MHz～2170MHz, and the volume of antenna element 120 is about 65mm * 11mm * 2.5mm.In other words, the volume of antenna element 120 is less than the antenna that is generally operable in 704MHz～960MHz and 1710MHz～2170MHz, and the volume of antenna element 120 is similar to general existing 3G antenna.
In addition, with general existing 3G antenna by contrast, the operation frequency range of antenna element 120 all comes better than existing 3G antenna with characteristic.For instance, Fig. 6 is voltage standing wave ratio (the Voltage Standing Wave Ratio of antenna element in Fig. 5 embodiment, VSWR) simulation schematic diagram, and Fig. 7 is the antenna element of Fig. 5 embodiment and the antenna efficiency figure of existing 3G antenna, wherein curve 710 is in order to represent the antenna efficiency of antenna element 120, and curve 720 is in order to represent the antenna efficiency figure of existing 3G antenna.As shown in Figure 6, the operational frequency bands of antenna element 120 comprises 704MHz～960MHz and 1710MHz～2170MHz.In addition, as shown in Figure 7, the operation frequency range of antenna element 120 is greater than existing 3G antenna, and the antenna efficiency of antenna element 120 is better than existing 3G antenna under high-frequency operation frequency band.
In sum, the present invention utilizes the first low-frequency resonance mode and the second low-frequency resonance mode to produce the low frequency operational frequency bands of antenna element, and the frequency range of the low frequency operational frequency bands of extended antenna element thus.In addition, the first low-frequency resonance mode of antenna element is mainly to produce by the coupling effect between the first extension of section and body, therefore can reach the object of reduction antenna element.In other words, the present invention can be in the situation that the operational frequency bands of extended antenna element be taken into account the size of antenna element, and then contributes to mobile communications device in microminiaturized development.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a mobile communications device, is characterized in that, comprising:
One earth element; And
One antenna element, comprises having a body of a load point and from the extended Parasitica of this earth element, wherein this Parasitica comprises:
One ground connection section, the first end of this ground connection section is electrically connected this earth element, and the second end of this ground connection section is with respect to this body;
One first extension of section, the second end along a predetermined direction from this ground connection section extends, and with this body coupling space of being separated by, wherein this antenna element inspires one first low-frequency resonance mode by this body, this first extension of section and this ground connection section; And
One second extension of section, extends from the second end of this ground connection section along the inverse direction of this predetermined direction, and wherein this antenna element inspires one second low-frequency resonance mode by this ground connection section and this second extension of section,
Wherein, this antenna element is expanded a low frequency operational frequency bands by this first low-frequency resonance mode and this second low-frequency resonance mode.
2. mobile communications device according to claim 1, is characterized in that, this load point of contiguous this body of first end of this ground connection section.
3. mobile communications device according to claim 1, is characterized in that, this body comprises:
One feed-in section, the first end of this feed-in section has this load point;
One first radiant section, is electrically connected the second end of this feed-in section, and with respect to the second end and this first extension of section of this ground connection section, wherein this first radiant section and this first extension of section this coupling space of being separated by; And
One second radiant section, is electrically connected the second end of this feed-in section, and with this first radiation area section in the both sides of this feed-in section,
Wherein, this antenna element utilizes this feed-in section and this first radiant section to receive and dispatch the signal under one first high-frequency operation frequency band, and utilizes this feed-in section and this second radiant section to receive and dispatch the signal under one second high-frequency operation frequency band.
4. mobile communications device according to claim 3, is characterized in that, this feed-in section and this second radiant section provide a resonance path, and the length of this resonance path is 1/4 times of wavelength of signal under this second high-frequency operation frequency band.
5. mobile communications device according to claim 3, is characterized in that, this first extension area section is between this feed-in section and this ground connection section, and this first extension of section is parallel to this first radiant section.
6. mobile communications device according to claim 3, is characterized in that, this first extension of section comprises at least one bending, to cause this feed-in section with respect to this first extension of section, and this feed-in section and this first extension of section this coupling space of being separated by.
7. mobile communications device according to claim 1, is characterized in that, this Parasitica also comprises:
One the 3rd extension of section, extends from this ground connection section, and with respect to this second extension of section, wherein this antenna element utilizes the 3rd extension of section and this ground connection section to receive and dispatch the signal under a third high frequency operational frequency bands.
8. mobile communications device according to claim 7, is characterized in that, the 3rd extension of section and this ground connection section provide a resonance path, and the length of this resonance path is under operational frequency bands 1/4 times of the wavelength of signal frequently of this third high.
9. mobile communications device according to claim 1, is characterized in that, this second extension of section comprises at least one bending.
10. mobile communications device according to claim 1, is characterized in that, this body is essentially a unipole antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120648.8A CN104103892B (en) | 2013-04-09 | 2013-04-09 | Mobile communications device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120648.8A CN104103892B (en) | 2013-04-09 | 2013-04-09 | Mobile communications device |
Publications (2)
| Publication Number | Publication Date |
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| CN104103892A true CN104103892A (en) | 2014-10-15 |
| CN104103892B CN104103892B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310120648.8A Expired - Fee Related CN104103892B (en) | 2013-04-09 | 2013-04-09 | Mobile communications device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571528A (en) * | 2016-10-25 | 2017-04-19 | 瑞声科技（南京）有限公司 | Multi-band antenna system and electronic equipment |
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|---|---|---|---|---|
| CN102075205A (en) * | 2009-11-24 | 2011-05-25 | 财团法人工业技术研究院 | Mobile communication device |
| TW201143205A (en) * | 2010-05-28 | 2011-12-01 | Yageo Corp | Mobile communication device antenna |
| US20120154243A1 (en) * | 2010-12-17 | 2012-06-21 | Kim Sung-Min | Wideband single resonance antenna |
| CN202474197U (en) * | 2012-03-09 | 2012-10-03 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna |
| CN102820523A (en) * | 2011-06-07 | 2012-12-12 | 启碁科技股份有限公司 | Multi-band antenna |
| US20120313830A1 (en) * | 2011-06-08 | 2012-12-13 | Lee Cheng-Jung | Multi-band antenna |
-
2013
- 2013-04-09 CN CN201310120648.8A patent/CN104103892B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075205A (en) * | 2009-11-24 | 2011-05-25 | 财团法人工业技术研究院 | Mobile communication device |
| TW201143205A (en) * | 2010-05-28 | 2011-12-01 | Yageo Corp | Mobile communication device antenna |
| US20120154243A1 (en) * | 2010-12-17 | 2012-06-21 | Kim Sung-Min | Wideband single resonance antenna |
| CN102820523A (en) * | 2011-06-07 | 2012-12-12 | 启碁科技股份有限公司 | Multi-band antenna |
| US20120313830A1 (en) * | 2011-06-08 | 2012-12-13 | Lee Cheng-Jung | Multi-band antenna |
| CN202474197U (en) * | 2012-03-09 | 2012-10-03 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106571528A (en) * | 2016-10-25 | 2017-04-19 | 瑞声科技（南京）有限公司 | Multi-band antenna system and electronic equipment |
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| CN104103892B (en) | 2016-08-10 |
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Granted publication date: 20160810 |