CN102055061A - Multifrequency mobile communication device and antenna thereof - Google Patents
Multifrequency mobile communication device and antenna thereof Download PDFInfo
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- CN102055061A CN102055061A CN2009102101627A CN200910210162A CN102055061A CN 102055061 A CN102055061 A CN 102055061A CN 2009102101627 A CN2009102101627 A CN 2009102101627A CN 200910210162 A CN200910210162 A CN 200910210162A CN 102055061 A CN102055061 A CN 102055061A
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Abstract
The invention provides a multifrequency mobile communication device and an antenna thereof. The device is provided with a ground plane and the antenna, wherein the antenna is arranged on a medium substrate, and comprises a monopolar component, a short-circuit radiation part, a first radiation branch and a second radiation branch; the monopolar component generates a first resonance mode, and comprises a feeding end which is the feeding point of the antenna; one end of the short-circuit radiation part is connected to the short-circuit end of the ground plane, and the other end of the short-circuit radiation part is an open circuit; the short-circuit radiation part extends along the monopolar component, is provided with coupling spacings, and generates a second resonance mode; one end of the first radiation branch is connected to the short-circuit radiation part, and the other end of the first radiation branch is an open circuit; the first radiation branch extends along the short-circuit end of the short-circuit radiation part, is arranged at one side opposite to the monopolar component, and generates a third resonance mode; the third resonance mode and the first resonance mode form a first working band; one end of the second radiation branch is connected to the short-circuit radiation part, and the other end of the second radiation branch is an open circuit; the second radiation branch extends along the first radiation branch, causes the first radiation branch to be arranged between the second radiation branch and the short-circuit radiation part, and generates a fourth resonance mode; and the fourth resonance mode and the second resonance mode form a second working band. According to the invention, the working band width of the antenna is increased, and the size of the antenna is reduced.
Description
Technical field
The present invention relates to a kind of mobile communications device and antenna thereof, especially a kind of mobile communications device and antenna thereof that is applicable to multiple-frequency operation.
Background technology
The development of mobile communications device now is more and more quicker, and WWAN (Wireless Wide Area Network) and LTE (Long Term Evolution) technology are flourish, and people are also more and more higher for the demand of mobile communications device.Because each national employed communication system is not quite similar, therefore exist the system of multiple wireless network, as LTE700/2300/2500, GSM850/900/1800/1900 and UMTS etc.And in the design of mobile communications device, not only need to satisfy light, thin, short, little theory, the while necessary again can a plurality of band operation.In order to satisfy this bandwidth requirements, in the mobile communications device design, can use the technology of manifold type feed-in to reach the characteristic of the multiple-frequency operation of its built-in antenna.
Yet progress along with the communication technology, the working band of using in the communication is more and more, therefore the required bandwidth of operation of containing of mobile communications device is more and more wideer, make the mobile communications device of general manifold type feed-in also can't contain required frequency band fully, TaiWan, China patent I295517 number " a kind of built-in multiband line " for example, it discloses a kind of mobile communications device of manifold type feed-in, and it can contain GSM900/1800/1900/UMTS four work frequently.
Yet, if want complete LTE/GSM/UMTS eight work frequently of containing, comprise LTE700/GSM850/900 (698 to 960MHz) three work frequently and GSM1800/1900/UMTS/LTE2300/2500 (1710 to 2690MHz) five work frequently, keep the size of antenna downsizing simultaneously, the traditional manifold type feed-in of this kind mode also can't reach.
Therefore, be necessary to provide a kind of multifrequency mobile communications device and antenna thereof, to solve the problem that prior art was produced.
Summary of the invention
The object of the present invention is to provide a kind of multifrequency mobile communications device to be applicable to eight work frequently of LTE/GSM/UMTS.
Another object of the present invention is to provide a kind of antenna, be applicable to eight work frequently of LTE/GSM/UMTS.
In order to achieve the above object, multifrequency mobile communications device of the present invention has a ground plane and an antenna, and this antenna is positioned on the medium substrate, and this antenna comprises: a monopole element, a short circuit Department of Radiation, one first radiation branch road and one second radiation branch road.Wherein this monopole element comprises a feed side, and this feed side is the load point of this antenna, and this monopole element produces one first resonance mode of this antenna; One end of this short circuit Department of Radiation is a short-circuit end, this short-circuit end is electrically connected to this ground plane, its other end is open circuit, this short circuit Department of Radiation extends along this monopole element, and with this monopole element have one the coupling spacing, this short circuit Department of Radiation excites by the coupling of this monopole element, produces one second resonance mode of this antenna; One end of this first radiation branch road is electrically connected to this short circuit Department of Radiation, its other end is open circuit, this first radiation branch road extends along this short-circuit end direction of this short circuit Department of Radiation, and this first radiation branch road is positioned at and the corresponding opposite side of this monopole element, this first radiation branch road produces one the 3rd resonance mode, and the 3rd resonance mode and this first resonance mode form one first working band of this antenna; And an end of this second radiation branch road is electrically connected to this short circuit Department of Radiation, its other end is open circuit, this second radiation branch road extends along this first radiation branch road, and make this first radiation branch road between this second radiation branch road and this short circuit Department of Radiation, this second radiation branch road produces one the 4th resonance mode, and the 4th resonance mode and this second resonance mode form one second working band of this antenna.
In order to reach above-mentioned another purpose, antenna of the present invention is used to have a mobile communications device of a ground plane, and this antenna comprises: a monopole element, a short circuit Department of Radiation, one first radiation branch road and one second radiation branch road.Wherein this monopole element comprises a feed side, and this feed side is the load point of this antenna, and this monopole element produces one first resonance mode of this antenna; One end of this short circuit Department of Radiation is a short-circuit end, this short-circuit end is electrically connected to this ground plane, its other end is open circuit, this short circuit Department of Radiation extends along this monopole element, and with this monopole element have one the coupling spacing, this short circuit Department of Radiation excites by the coupling of this monopole element, produces one second resonance mode of this antenna; One end of this first radiation branch road is electrically connected to this short circuit Department of Radiation, its other end is open circuit, this first radiation branch road extends along this short-circuit end direction of this short circuit Department of Radiation, and this first radiation branch road is positioned at and the corresponding opposite side of this monopole element, this first radiation branch road produces one the 3rd resonance mode, and the 3rd resonance mode and this first resonance mode form one first working band of this antenna; And an end of this second radiation branch road is electrically connected to this short circuit Department of Radiation, its other end is open circuit, this second radiation branch road extends along this first radiation branch road, and make this first radiation branch road between this second radiation branch road and this short circuit Department of Radiation, this second radiation branch road produces one the 4th resonance mode, and the 4th resonance mode and this second resonance mode form one second working band of this antenna.
Execution mode in according to the present invention, this coupling spacing is less than 2mm.
The present invention increases the bandwidth of operation of antenna, is applicable to eight work frequently of LTE/GSM/UMTS, and can effectively dwindles antenna size, demand, the particularly application of thin type mobile communications device when quite meeting the multifrequency mobile communications device practical application of downsizing.
Description of drawings
Fig. 1 is the structure chart of first embodiment of multifrequency mobile communications device of the present invention.
Fig. 2 returns the loss simulation drawing for first embodiment's of multifrequency mobile communications device of the present invention.
Fig. 3 is the structure chart of second embodiment of multifrequency mobile communications device of the present invention.
Fig. 4 is the structure chart of the 3rd embodiment of multifrequency mobile communications device of the present invention.
Fig. 5 is the structure chart of the 4th embodiment of multifrequency mobile communications device of the present invention.
The primary clustering symbol description:
Multifrequency mobile communications device 1,3,4,5 first radiation branch roads 16
Earth point 111 coupling spacings 18,38,48
Feed side 141,341,441 the 4th resonance modes 24
Short circuit Department of Radiation 15 first working bands 25
Short-circuit end 151 second working bands 26
Open end 152 the 3rd radiation branch road 59
The VSWR voltage standing wave ratio
Embodiment
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, cited below particularlyly go out specific embodiments of the invention, and cooperate appended accompanying drawing, be described in detail below.
Please in the lump with reference to figure 1 and Fig. 2.Fig. 1 is the structure chart of first embodiment of multifrequency mobile communications device of the present invention, and Fig. 2 returns the loss simulation drawing for first embodiment's of multifrequency mobile communications device of the present invention.Multifrequency mobile communications device 1 has ground plane 11 and antenna 12, and ground plane 11 is the system ground of mobile communications device, or the system ground of mobile communication mobile phone, and antenna 12 can printing, etching or injection molding technology be formed on the medium substrate 13.Antenna 12 comprises: monopole element 14, short circuit Department of Radiation 15, the first radiation branch road 16 and the second radiation branch road 17.
The feed side 141 of monopole element 14 is the load point of antenna 12, and monopole element 14 produces first (the highest) resonance mode 21 (as shown in Figure 2) of antenna 12.In the present embodiment, monopole element 14 slightly is one L shaped.
One end of short circuit Department of Radiation 15 is a short-circuit end 151, and it is electrically connected to the earth point 111 of ground plane 11, and its other end is an open end 152, and short circuit Department of Radiation 15 extends along monopole element 14, and has coupling spacing 18 with monopole element 14.In the present embodiment, coupling spacing 18 is less than 2mm.Short circuit Department of Radiation 15 excites by the coupling of monopole element 14, produces 22 (as shown in Figure 2) of second (minimum) resonance mode of antenna 12.
One end of the first radiation branch road 16 is electrically connected to short circuit Department of Radiation 15, its other end is open circuit, the first radiation branch road 16 extends along short-circuit end 151 directions of short circuit Department of Radiation 15, and be positioned at and monopole element 14 corresponding opposite sides, the first radiation branch road 16 produces the 3rd resonance mode 23 (as shown in Figure 2), the 3rd resonance mode 23 and this first resonance mode 21 form 25 (as shown in Figure 2) of first (higher) working band of antennas 12, and wherein first working band 25 can contain 1710 to 2690MHz.
One end of the second radiation branch road 17 is electrically connected to short circuit Department of Radiation 15, its other end is open circuit, the second radiation branch road 17 extends along the first radiation branch road 16, and make the first radiation branch road 16 between the second radiation branch road 17 and short circuit Department of Radiation 15, the second radiation branch road 17 produces the 4th resonance mode 24 (as shown in Figure 2), the 4th resonance mode 24 and second resonance mode 22 form 26 (as shown in Figure 2) of one second (lower) working band of this antenna, and wherein second working band 26 can contain 698 to 960MHz.
In Fig. 2, transverse axis is represented operating frequency, and loss is returned in longitudinal axis representative.In first embodiment, select following size to simulate: the about 100mm of ground plane 11 length, the about 40mm of width; About 40 * the 15mm of antenna 12 areas
2 Medium substrate 13 adopts the fiberglass media substrate of the about 45mm of length, the about 15mm of width, the about 0.8mm of thickness; Monopole element 14 is down L shaped sheet metal, the about 24mm of length, the about 6mm of width; The about 39mm of short circuit Department of Radiation 15 length, the about 0.5mm of width; The about 38mm of the first radiation branch road, 16 length, the about 1.5mm of width; The about 49mm of the second radiation branch road, 17 length, the about 1mm of width.
As shown in Figure 2, first embodiment 1 can produce first (the highest) resonance mode 21 of this antenna, second (minimum) resonance mode 22, the 3rd resonance mode 23 and the 4th resonance mode 24, and first (the highest) resonance mode and the 3rd resonance mode form first (higher) working band 25 of this antenna, 3: 1 VSWR (voltage standing wave ratio) return under the loss definition (mobile communications device Antenna Design standard), contain at least 1710 to 2690MHz, second (minimum) resonance mode and the 4th resonance mode then form second (lower) working band 26 of this antenna, contain at least 698 to 960MHz, this two working band can be contained eight work frequently of LTE/GSM/UMTS.
Then please refer to Fig. 3, Fig. 3 is the structure chart of second embodiment of multifrequency mobile communications device of the present invention.Multifrequency mobile communications device 3 has ground plane 11 and antenna 32, and antenna 32 comprises: monopole element 34, short circuit Department of Radiation 15, the first radiation branch road 16 and the second radiation branch road 17.The overall structure of second embodiment and first embodiment is roughly the same, and its difference is that the monopole element 34 of second embodiment is slightly T-shaped sheet metal.
Then please refer to Fig. 4, Fig. 4 is the structure chart of the 3rd embodiment of multifrequency mobile communications device of the present invention.Multifrequency mobile communications device 4 has ground plane 11 and antenna 42, and antenna 42 comprises: monopole element 44, short circuit Department of Radiation 15, the first radiation branch road 16 and the second radiation branch road 17.The overall structure of the 3rd embodiment and first embodiment is roughly the same, and its difference is that monopole element 44 slightly is inverted U-shaped sheet metal.
Among the above-mentioned second and the 3rd embodiment, though a little variation arranged in shape in monopole element, but only need adjust the size of monopole element, also can produce first (the highest) resonance mode, and electromagnetic coupled excites the short circuit Department of Radiation, and be capacitively coupled to the first radiation branch road and the second radiation branch road, and produce second (minimum), the 3rd and the 4th resonance mode respectively, synthesize the working band in two broadbands at last.
Then please refer to Fig. 5, Fig. 5 is the structure chart of the 4th embodiment of multifrequency mobile communications device of the present invention.Multifrequency mobile communications device 5 has ground plane 11 and antenna 52, and antenna 52 comprises: monopole element 14, short circuit Department of Radiation 15, the first radiation branch road 16 and the second radiation branch road 17 and the 3rd radiation branch road 59.The overall structure of the 4th embodiment and first embodiment is also roughly the same, its difference is, the 4th embodiment has the 3rd radiation branch road 59 in addition, the one end is electrically connected to short circuit Department of Radiation 15, its other end is open circuit, the 3rd radiation branch road 59 extends along short-circuit end 151 directions of short circuit Department of Radiation 15, and is positioned at and monopole element 14 corresponding opposite sides, and the 3rd radiation branch road 59 is between the first radiation branch road 16 and short circuit Department of Radiation 15.The 3rd radiation branch road 59 can produce extra resonance mode, to increase the bandwidth of operation of antenna 52.
The second above-mentioned embodiment, the 3rd embodiment and the 4th embodiment all can reach the effect similar to first embodiment.
Comprehensively above-mentioned, mobile communications device of the present invention uses the feeding portion of monopole element as its antenna, monopole element can also produce resonance mode (first resonance mode), increase the bandwidth of operation of antenna, during simultaneously as the feeding portion of antenna, short circuit Department of Radiation that can the capacitive coupling excitation antenna, and capacitive coupling excites the first radiation branch road and the second radiation branch road that is connected to the short circuit Department of Radiation, produce resonance mode (second respectively, the the 3rd and the 4th resonance mode), make antenna can have four resonance modes to produce, the working band (first and second working band) in synthetic two broadbands is enough to contain LTE700/GSM850/900 three work frequently and GSM1800/1900/UMTS/LTE2300/2500 five work frequently respectively.And antenna is a planar structure, the short circuit Department of Radiation extends along the monopole element direction, and the first radiation branch road extends along short circuit Department of Radiation direction, second Department of Radiation then extends along the first radiation branch road direction, just can effectively dwindle antenna size, the only about 40x15mm of its area occupied by arrangement mode like this
2(600mm
2) or can be littler, demand, the particularly application of thin type mobile communications device when quite meeting the multifrequency mobile communications device practical application of downsizing.
To sum up institute is old, and no matter the present invention everywhere all shows it totally different in the feature of known technology with regard to purpose, means and effect, earnestly asks the auditor to perceive, and grants quasi patent early, makes Jiahui society, and the true feeling moral just.Only it should be noted that above-mentioned many embodiment give an example for convenience of explanation, the present invention's interest field required for protection should be as the criterion so that the scope of claims is described naturally, but not only limits to the foregoing description.
Claims (10)
1. a multifrequency mobile communications device has a ground plane and an antenna, and this antenna is positioned on the medium substrate, and this antenna comprises:
One monopole element, this monopole element comprises a feed side, and this feed side is the load point of this antenna, and this monopole element produces one first resonance mode of this antenna;
One short circuit Department of Radiation, this short circuit Department of Radiation one end is a short-circuit end, this short-circuit end is electrically connected to this ground plane, this short circuit Department of Radiation other end is open circuit, this short circuit Department of Radiation extends along this monopole element, and with this monopole element have one the coupling spacing, this short circuit Department of Radiation excites by the coupling of this monopole element, produces one second resonance mode of this antenna;
One first radiation branch road, this first radiation branch road, one end is electrically connected to this short circuit Department of Radiation, the other end is open circuit, this first radiation branch road extends along this short-circuit end direction of this short circuit Department of Radiation, and this first radiation branch road is positioned at and the corresponding opposite side of this monopole element, this first radiation branch road produces one the 3rd resonance mode, and the 3rd resonance mode and this first resonance mode form one first working band of this antenna; And
One second radiation branch road, this second radiation branch road, one end is electrically connected to this short circuit Department of Radiation, the other end is open circuit, this second radiation branch road extends along this first radiation branch road, and make this first radiation branch road between this second radiation branch road and this short circuit Department of Radiation, this second radiation branch road produces one the 4th resonance mode, and the 4th resonance mode and this second resonance mode form one second working band of this antenna.
2. multifrequency mobile communications device as claimed in claim 1, wherein this coupling spacing is less than 2mm.
3. multifrequency mobile communications device as claimed in claim 1, wherein this monopole element slightly is one L shaped, a T shape or inverted U-shaped.
4. multifrequency mobile communications device as claimed in claim 1, wherein this ground plane is the system ground of a mobile communication mobile phone.
5. multifrequency mobile communications device as claimed in claim 1, wherein this first working band contains 1710 to 2690MHz.
6. multifrequency mobile communications device as claimed in claim 1, wherein this second working band contains 698 to 960MHz.
7. multifrequency mobile communications device as claimed in claim 1, wherein this antenna has one the 3rd radiation branch road, the 3rd radiation branch road one end is electrically connected to this short circuit Department of Radiation, the other end is open circuit, the 3rd radiation branch road extends along this short-circuit end direction of this short circuit Department of Radiation, and the 3rd radiation branch road is positioned at and the corresponding opposite side of this monopole element, and the 3rd radiation branch road produces a resonance mode, to increase the bandwidth of operation of this antenna.
8. multifrequency mobile communications device as claimed in claim 7, wherein the 3rd radiation branch road is between this first radiation branch road and this short circuit Department of Radiation.
9. antenna is used to have a mobile communications device of a ground plane, and this antenna comprises:
One monopole element, this monopole element comprises a feed side, and this feed side is the load point of this antenna, and this monopole element produces one first resonance mode of this antenna;
One short circuit Department of Radiation, this short circuit Department of Radiation one end is a short-circuit end, this short-circuit end is electrically connected to this ground plane, the other end is open circuit, this short circuit Department of Radiation extends along this monopole element, and with this monopole element have one the coupling spacing, this short circuit Department of Radiation excites by the coupling of this monopole element, produces one second resonance mode of this antenna;
One first radiation branch road, this first radiation branch road, one end is electrically connected to this short circuit Department of Radiation, the other end is open circuit, this first radiation branch road extends along this short-circuit end direction of this short circuit Department of Radiation, and this first radiation branch road is positioned at and the corresponding opposite side of this monopole element, this first radiation branch road produces one the 3rd resonance mode, and the 3rd resonance mode and this first resonance mode form one first working band of this antenna; And
One second radiation branch road, this second radiation branch road, one end is electrically connected to this short circuit Department of Radiation, the other end is open circuit, this second radiation branch road extends along this first radiation branch road, and make this first radiation branch road between this second radiation branch road and this short circuit Department of Radiation, this second radiation branch road produces one the 4th resonance mode, and the 4th resonance mode and this second resonance mode form one second working band of this antenna.
10. antenna as claimed in claim 9, wherein this antenna is positioned on the medium substrate.
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| CN2009102101627A CN102055061B (en) | 2009-10-29 | 2009-10-29 | Multifrequency mobile communication device and antenna thereof |
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| CN2009102101627A CN102055061B (en) | 2009-10-29 | 2009-10-29 | Multifrequency mobile communication device and antenna thereof |
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| CN102055061B CN102055061B (en) | 2013-11-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094673A (en) * | 2011-11-07 | 2013-05-08 | 联发科技股份有限公司 | Wideband antenna |
| CN103840251A (en) * | 2012-11-22 | 2014-06-04 | 启碁科技股份有限公司 | Broadband antenna and antenna communication apparatus |
| US9331387B2 (en) | 2011-11-07 | 2016-05-03 | Mediatek Inc. | Wideband antenna |
| US9450288B2 (en) | 2012-11-20 | 2016-09-20 | Wistron Neweb Corp. | Broadband antenna and wireless communication device including the same |
| CN106299679A (en) * | 2015-06-04 | 2017-01-04 | 启碁科技股份有限公司 | Antenna and radiofrequency signal R-T unit |
| TWI625000B (en) * | 2013-08-29 | 2018-05-21 | 富智康（香港）有限公司 | Antenna structure and wireless communication device using same |
| US10069199B2 (en) | 2015-06-01 | 2018-09-04 | Wistron Neweb Corp. | Antenna and radio frequency signal transceiving device |
| CN112134005A (en) * | 2019-06-25 | 2020-12-25 | 歌尔科技有限公司 | Dipole antenna and wireless device |
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| US20080180333A1 (en) * | 2006-11-16 | 2008-07-31 | Galtronics Ltd. | Compact antenna |
| EP2048739A1 (en) * | 2006-07-28 | 2009-04-15 | Murata Manufacturing Co. Ltd. | Antenna device and radio communication device |
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| US20070069956A1 (en) * | 2005-09-29 | 2007-03-29 | Sony Ericsson Mobile Communications Ab | Multi-band PIFA |
| EP2048739A1 (en) * | 2006-07-28 | 2009-04-15 | Murata Manufacturing Co. Ltd. | Antenna device and radio communication device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094673A (en) * | 2011-11-07 | 2013-05-08 | 联发科技股份有限公司 | Wideband antenna |
| CN103094673B (en) * | 2011-11-07 | 2015-05-06 | 联发科技股份有限公司 | Wideband antenna |
| US9331387B2 (en) | 2011-11-07 | 2016-05-03 | Mediatek Inc. | Wideband antenna |
| US9450288B2 (en) | 2012-11-20 | 2016-09-20 | Wistron Neweb Corp. | Broadband antenna and wireless communication device including the same |
| CN103840251A (en) * | 2012-11-22 | 2014-06-04 | 启碁科技股份有限公司 | Broadband antenna and antenna communication apparatus |
| CN103840251B (en) * | 2012-11-22 | 2016-08-03 | 启碁科技股份有限公司 | Broad-band antenna and radio communication device |
| TWI625000B (en) * | 2013-08-29 | 2018-05-21 | 富智康（香港）有限公司 | Antenna structure and wireless communication device using same |
| US10069199B2 (en) | 2015-06-01 | 2018-09-04 | Wistron Neweb Corp. | Antenna and radio frequency signal transceiving device |
| CN106299679A (en) * | 2015-06-04 | 2017-01-04 | 启碁科技股份有限公司 | Antenna and radiofrequency signal R-T unit |
| CN106299679B (en) * | 2015-06-04 | 2019-06-11 | 启碁科技股份有限公司 | Antenna and radiofrequency signal R-T unit |
| CN112134005A (en) * | 2019-06-25 | 2020-12-25 | 歌尔科技有限公司 | Dipole antenna and wireless device |
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| CN102055061B (en) | 2013-11-06 |
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