CN102195122A - Thin mobile communication device - Google Patents
Thin mobile communication device Download PDFInfo
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- CN102195122A CN102195122A CN2010101231096A CN201010123109A CN102195122A CN 102195122 A CN102195122 A CN 102195122A CN 2010101231096 A CN2010101231096 A CN 2010101231096A CN 201010123109 A CN201010123109 A CN 201010123109A CN 102195122 A CN102195122 A CN 102195122A
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Abstract
The invention discloses a thin mobile communication device. The thin mobile communication device comprises a medium substrate, a ground plane and an antenna, wherein the medium substrate comprises a ground plane-free interval comprising a first edge and a second edge; the ground plane is positioned on the medium substrate; the antenna, which is a planar structure, includes a first working frequency band and a second working frequency band and is formed in the ground plane-free interval on the medium substrate, the first edge and the second edge of the ground plane-free interval are surrounded by the ground plane, the first edge is used for the passage of a feed-in connecting wire of the antenna, the first edge is a feed-in edge and the second edge is a non-feed-in edge, the distance between a side of the antenna and the second edge is less than 3mm, and the side is at least 5mm long and is in short-circuit connection with the ground plane. The device of the invention can obtain excellent input impedance matching and radiation characteristics by tightly combining the antenna with the adjacent ground plane.
Description
Technical field
The present invention relates to a kind of thin type mobile communications device, especially The built-in radio wide area network (WWAN, WirelessWide Area Network) antenna and the contiguous system ground thin type mobile communications device of combining closely.
Background technology
Mobile communications device development in recent years is quite rapid, not only the The built-in antenna need satisfy radio wide area network work requirements (comprising 824～960MHz and 1710～2,170 two frequency band at least) on working band, and require The built-in antenna and system ground that higher conformability can be arranged, to reach effective utilization of mobile communications device inner space.Therefore no longer merely be to be starting point in the built-in antenna design of mobile communications device with light, thin, short, little theory, simultaneously again must with the neighbor systems ground plane or with the integration closely of peripheral circuit do.And in order to have the operating characteristic in broadband, standing the counting in a no ground plane interval of antenna reaches wideband operation to obtain lower Q value, contained radio wide area network five bandwidth of work frequently, that is contain the working band of 824～960MHz and 1710～2170MHz, simultaneously be formed at this no ground plane interval with planar structure, to reduce the height of antenna on system circuit board, be applicable to the application of thin type mobile communications device.
Yet, antenna with the said method design, the one side, particularly comprise antenna end or need one headroom interval is arranged with contiguous ground plane near a terminal side, to reduce influence to the aerial radiation characteristic, the required no ground plane interval of antenna promptly becomes greatly thus, causes antenna to reduce in the degree of integration of mobile communications device inside, influences the configuration of entire inner space.
As U.S. Patent Application Publication No. US2009/0273521 A1 " Coplanar Coupled-fed multiband antennafor the mobile device (coplane coupling feed-in multifrequency mobile communications device antenna) ", it discloses a kind of flat plane antenna and is applicable to the work of radio wide area network mobile communication, this antenna also is positioned at a no ground plane interval, just the interval and neighbor systems ground plane of this no ground plane only with one side fate every, fail to combine closely (no ground plane interval has at least two edges to be centered on by the neighbor systems ground plane) with system ground, but though cause the antenna wideband operation, but still need bigger no ground plane interval, make the configuration of whole mobile communications device inner space be affected.
Therefore, be necessary to provide a kind of thin type mobile communications device (Slim Mobile Communication Device), to improve the existing problem of prior art.
Summary of the invention
A kind of thin type mobile communications device, the The built-in wireless wide area network antennas, its purpose is not only can contain five work (comprising 824～960MHz and 1710～2,170 two frequency band at least) frequently, and antenna can combine closely with the system ground on the medium substrate, reaches effective utilization of mobile communications device inner space.
For reaching above-mentioned purpose, thin type mobile communications device of the present invention comprises a medium substrate, a ground plane and an antenna, and this medium substrate comprises a no ground plane interval, and this no ground plane interval comprises one first edge and one second edge; This ground plane is positioned on this medium substrate; This antenna is a planar structure, this antenna has one first working band and one second working band, this dwi hastasana is formed in this no ground plane interval on this medium substrate, this first edge and this second edge in this no ground plane interval are centered on by this ground plane, and this first edge is passed through by a feed-in connecting line of this antenna, this first edge is a feed-in limit, this second edge is a non-feed-in limit, have the distance that is less than 3mm between one side of this antenna and this second edge, the length of this side is at least 5mm and short circuit is connected to this ground plane.
Execution mode in according to the present invention, this medium substrate can be the system circuit board of a mobile communication mobile phone, and this antenna is formed on this medium substrate with printing or etching technique.
The present invention utilizes the equivalent capacity of generation and equivalent inductance can adjust compensation because the antenna feed impedance coupling that the edge coupling is influenced, make antenna under the situation of combining closely with contiguous ground plane, can obtain good input impedance matching and radiation characteristic.
Description of drawings
Fig. 1 is the structure chart of first embodiment of thin type mobile communications device of the present invention.
Fig. 2 returns loss analog result figure for what the antenna of first embodiment of thin type mobile communications device of the present invention returned that loss analog result and this antenna be not short-circuited to ground plane.
Fig. 3 is the structure chart of second embodiment of thin type mobile communications device of the present invention.
Fig. 4 is the structure chart of the 3rd embodiment of thin type mobile communications device of the present invention.
The primary clustering symbol description:
Thin type mobile communications device 1,3,4 non-feed-in limits 132,332,333,432
Length t first working band 21
Antenna short circuit line 112 second working bands 22
No ground plane interval 13,33,43 spacing d
Feed-in limit 131,331,431
Embodiment
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.
Fig. 1 is the structure chart of first embodiment of thin type mobile communications device of the present invention.Thin type mobile communications device 1 has medium substrate 10, ground plane 12 and antenna 11.This medium substrate 10 can be the system circuit board of mobile communication mobile phone, and antenna 11 can print or etching technique is formed on the medium substrate 10, and antenna 11 is a planar structure, and antenna 11 has first working band 21 and second working band 22 (as shown in Figure 2).
In addition, this side 111 and pass perforation 113 by antenna short circuit line 112 and be electrically connected to ground plane 12.Ground plane 12 can be the system ground of a mobile communication mobile phone.
Fig. 2 returns the loss analog result for first embodiment's of thin type mobile communications device of the present invention, and wherein transverse axis represent operating frequency, and the longitudinal axis is represented and returned loss.In first embodiment, select following size to simulate: the about 115mm of the length of medium substrate 10, the about 50mm of width, the about 0.8mm of thickness; The about 15mm of interval 13 length of no ground plane, the about 25mm of width, all the other are ground plane 12 in the space of medium substrate 10.As shown in Figure 2, first embodiment can produce first working band 21 of this antenna, 3: 1 VSWR (voltage standing wave ratio) return under the loss definition (mobile communications device Antenna Design standard), contain at least 824～960MHz, and second working band 22, contain at least 1710～2170MHz, this two working band can be contained five work frequently of radio wide area network, comprises GSM850/900 (824～960MHz) two work frequently and GSM1800/1900/UMTS (1710～2170MHz) three work frequently.
And be not electrically connected under the situation of ground plane 12 at a side 111 of antenna 11, because antenna 11 is not short-circuited to ground plane 12, so can't provide equivalent inductance to be compensated for as its input impedance matching change of antenna that ground plane 12 is centered on, though this antenna 11 can produce one the 3rd working band 23 and the 4th working band 24 (as shown in Figure 2), this two working band can't completely be contained radio wide area network five bandwidth of work frequently.
Fig. 3 is the structure chart of second embodiment of thin type mobile communications device of the present invention.Thin type mobile communications device 3 has medium substrate 10, ground plane 32 and antenna 11.The overall structure of second embodiment and first embodiment is roughly the same, just the no ground plane interval 33 of second embodiment has three edges: first edge (being feed-in limit 331), second edge (being non-feed-in limit 332) and the 3rd edge (being non-feed-in limit 333), wherein non-feed-in limit 333 is between feed-in limit 331 and non-feed-in limit 332.Feed-in limit 331 and non-feed-in limit 332,333 are centered on by the ground plane on the medium substrate 10 32.Above-mentioned second embodiment though in no ground plane interval a little variation is arranged in shape, by the length of adjusting side 111 and the position of short dot, also can adjust equivalent capacity and the inductance that is produced, to reach the effect same with first embodiment.
Fig. 4 is respectively the structure chart of the 3rd embodiment of thin type mobile communications device of the present invention.Thin type mobile communications device 4 has medium substrate 10, ground plane 42 and antenna 11.The 3rd embodiment is also roughly the same with the overall structure of first embodiment, only have or not interval 43 two edges that centered on for ground plane 42 of ground plane: first edge (being feed-in limit 431) and second edge (being non-feed-in limit 432), have an angle theta between feed-in limit 431 and the non-feed-in limit 432, this angle theta is between 80 degree are spent to 135.Above-mentioned the 3rd embodiment though in no ground plane interval a little variation is arranged in shape, by the length of adjusting side 111 and the position of short dot, also can adjust equivalent capacity and the inductance that is produced, to reach the effect same with first embodiment.
Comprehensively above-mentioned, can produce a capacitive coupling between this side of this antenna and this ground plane, has an equivalent electric capacity, and a side short circuit of this antenna is connected to this ground plane one equivalent inductance is provided, and can compensate the edge coupling influence that general antenna produces by design so when doing to integrate with the ground plane that centers on.In the present invention, utilize the equivalent capacity and the equivalent inductance that produce can adjust the antenna feed impedance coupling that compensation is influenced owing to the edge coupling, make antenna under the situation of combining closely with contiguous ground plane, can obtain good input impedance matching and radiation characteristic.
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. thin type mobile communications device comprises:
One medium substrate, this medium substrate comprise a no ground plane interval, and this no ground plane interval comprises one first edge and one second edge;
One ground plane, this ground plane are positioned on this medium substrate; And
One antenna, this antenna is a planar structure, this antenna has one first working band and one second working band, this dwi hastasana is formed in this no ground plane interval on this medium substrate, this first edge and this second edge in this no ground plane interval are centered on by this ground plane, and this first edge is passed through by a feed-in connecting line of this antenna, this first edge is a feed-in limit, this second edge is a non-feed-in limit, have the distance that is less than 3mm between one side of this antenna and this second edge, the length of this side is at least 5mm and short circuit is connected to this ground plane.
2. thin type mobile communications device as claimed in claim 1, this first edge and this second edge that wherein are somebody's turn to do no ground plane interval are roughly orthogonal.
3. thin type mobile communications device as claimed in claim 1, wherein this first edge in this no ground plane interval and this second edge have an angle, and this angle is between 80 degree are spent to 135.
4. thin type mobile communications device as claimed in claim 1, wherein this no ground plane interval also comprises one the 3rd edge, wherein the 3rd edge is between this first edge and this second edge.
5. thin type mobile communications device as claimed in claim 1, wherein a side of this antenna comprises a side of antenna end.
6. thin type mobile communications device as claimed in claim 1, wherein this antenna is formed on this medium substrate with printing or etching technique.
7. thin type mobile communications device as claimed in claim 1, wherein this medium substrate is the system circuit board of a mobile communication mobile phone.
8. thin type mobile communications device as claimed in claim 1, wherein this ground plane is the system ground of a mobile communication mobile phone.
9. thin type mobile communications device as claimed in claim 1, wherein this of this antenna first working band contains at least 824 to 960MHz.
10. thin type mobile communications device as claimed in claim 1, wherein this of this antenna second working band contains at least 1710 to 2170MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010123109.6A CN102195122B (en) | 2010-03-12 | 2010-03-12 | Thin mobile communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010123109.6A CN102195122B (en) | 2010-03-12 | 2010-03-12 | Thin mobile communication device |
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| CN102195122A true CN102195122A (en) | 2011-09-21 |
| CN102195122B CN102195122B (en) | 2014-01-22 |
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| CN201010123109.6A Active CN102195122B (en) | 2010-03-12 | 2010-03-12 | Thin mobile communication device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515703A (en) * | 2012-06-28 | 2014-01-15 | 宏碁股份有限公司 | Communication device |
| CN103700922A (en) * | 2012-09-27 | 2014-04-02 | 财团法人工业技术研究院 | Communication device and method for designing antenna element thereof |
| US9118110B2 (en) | 2012-06-22 | 2015-08-25 | Acer Incorporated | Communication device and antenna element therein |
| CN112928451A (en) * | 2021-01-21 | 2021-06-08 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1405924A (en) * | 2001-09-20 | 2003-03-26 | 京瓷株式会社 | Antenna device |
| CN1964134A (en) * | 2005-11-09 | 2007-05-16 | 宏碁股份有限公司 | Antenna design of electronic equipment |
| US20080042904A1 (en) * | 2006-08-18 | 2008-02-21 | Hon Hai Precision Industry Co., Ltd. | Planar antenna |
| CN101237079A (en) * | 2007-09-28 | 2008-08-06 | 脉冲芬兰有限公司 | Dual antenna |
| CN101582534A (en) * | 2008-05-12 | 2009-11-18 | 宏碁股份有限公司 | Capacitance coupling multi-frequency annular antenna |
-
2010
- 2010-03-12 CN CN201010123109.6A patent/CN102195122B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405924A (en) * | 2001-09-20 | 2003-03-26 | 京瓷株式会社 | Antenna device |
| CN1964134A (en) * | 2005-11-09 | 2007-05-16 | 宏碁股份有限公司 | Antenna design of electronic equipment |
| US20080042904A1 (en) * | 2006-08-18 | 2008-02-21 | Hon Hai Precision Industry Co., Ltd. | Planar antenna |
| CN101237079A (en) * | 2007-09-28 | 2008-08-06 | 脉冲芬兰有限公司 | Dual antenna |
| CN101582534A (en) * | 2008-05-12 | 2009-11-18 | 宏碁股份有限公司 | Capacitance coupling multi-frequency annular antenna |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9118110B2 (en) | 2012-06-22 | 2015-08-25 | Acer Incorporated | Communication device and antenna element therein |
| CN103515703A (en) * | 2012-06-28 | 2014-01-15 | 宏碁股份有限公司 | Communication device |
| CN103515703B (en) * | 2012-06-28 | 2016-08-03 | 宏碁股份有限公司 | Communicator |
| CN103700922A (en) * | 2012-09-27 | 2014-04-02 | 财团法人工业技术研究院 | Communication device and method for designing antenna element thereof |
| US9325066B2 (en) | 2012-09-27 | 2016-04-26 | Industrial Technology Research Institute | Communication device and method for designing antenna element thereof |
| CN112928451A (en) * | 2021-01-21 | 2021-06-08 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102195122B (en) | 2014-01-22 |
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