CN102195122B - Thin mobile communication device - Google Patents
Thin mobile communication device Download PDFInfo
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- CN102195122B CN102195122B CN201010123109.6A CN201010123109A CN102195122B CN 102195122 B CN102195122 B CN 102195122B CN 201010123109 A CN201010123109 A CN 201010123109A CN 102195122 B CN102195122 B CN 102195122B
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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 mobile communication device, the thin mobile communication device that especially system ground of its built-in radio wide area network (WWAN, WirelessWide Area Network) antenna and vicinity is combined closely.
Background technology
Mobile communications device development is in recent years quite rapid, not only its built-in antenna needs to meet radio wide area network work requirements (at least comprising two of 824～960MHz and 1710～2170 frequency band) on working band, and require its built-in antenna and system ground can have higher conformability, to reach effective utilization of mobile communications device inner space.Therefore in the built-in antenna design of mobile communications device, be no longer merely to take light, thin, short, little theory as starting point, must do to integrate closely with neighbor systems ground plane or with peripheral circuit again simultaneously.And in order to there is the operating characteristic in broadband, standing the counting in one of antenna reaches wideband operation without ground plane interval 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, with planar structure, be formed at this without ground plane interval simultaneously, to reduce the height of antenna on system circuit board, be applicable to the application of thin mobile communication device.
Yet, antenna with said method design, one side, particularly comprising antenna end or connecing a subterminal side to have with contiguous ground plane a headroom interval, to reduce the impact on antenna radiation characteristics, what antenna was required thus becomes greatly without ground plane interval, causes antenna to reduce in the degree of integration of mobile communications device inside, affects the configuration of whole inner space.
As U.S. Patent Application Publication No. US2009/0273521 A1 " Coplanar Coupled-fed multiband antennafor the mobile device (coplanar coupling feed-in Multifrequency mobile communication 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 is also positioned at one without ground plane interval, just this without ground plane interval with neighbor systems ground plane only with one side fate every, fail to be combined closely with system ground (without to have two edges at least be neighbor systems ground plane institute in ground plane interval around), though cause the antenna can wideband operation, but still need larger interval without ground plane, the configuration of whole mobile communications device inner space is affected.
Therefore, be necessary to provide a kind of thin mobile communication device (Slim Mobile Communication Device), to improve the existing problem of prior art.
Summary of the invention
A kind of thin mobile communication device, its built-in wireless wide area network antennas, its object is not only can contain five work (at least comprising two of 824～960MHz and 1710～2170 frequency band) frequently, and antenna can be combined by the system ground on medium substrate closely, reach effective utilization of mobile communications device inner space.
For reaching above-mentioned object, thin mobile communication device of the present invention, comprises a medium substrate, a ground plane and an antenna, and this medium substrate comprises that one is interval without ground plane, and this comprises one first edge and one second edge without ground plane interval; 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, it is interval without ground plane that this dwi hastasana is formed in this on this medium substrate, this ground plane of this this first edge without ground plane interval and this Second Edge cause institute around, and the feed-in connecting line that this first edge is this antenna is passed through, this first edge is a feed-in limit, this second edge is a non-feed-in limit, between one side of this antenna and this second edge, have the distance that is less than 3mm, the length of this side is at least 5mm and short circuit is connected to this ground plane.
An execution mode 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 the antenna feed impedance coupling that compensation affects due to edge coupling, make antenna under the situation of combining closely with contiguous ground plane, can obtain good input impedance coupling and radiation characteristic.
Accompanying drawing explanation
Fig. 1 is the structure chart of the first embodiment of thin mobile communication device of the present invention.
Fig. 2 be the antenna of the first embodiment of thin mobile communication device of the present invention return to that loss analog result and this antenna be not short-circuited to ground plane return to loss analog result figure.
Fig. 3 is the structure chart of the second embodiment of thin mobile communication device of the present invention.
Fig. 4 is the structure chart of the 3rd embodiment of thin mobile communication device of the present invention.
Primary clustering symbol description:
Thin mobile communication device 1,3,4 non-feed-in limits 132,332,333,432
Length t the first working band 21
Antenna short circuit line 112 second working bands 22
Without ground plane interval 13,33,43 spacing d
Feed-in limit 131,331,431
Embodiment
Above and other object of the present invention, feature and advantage can be become apparent, cited below particularlyly go out specific embodiments of the invention, and coordinate appended accompanying drawing, be described in detail below.
Fig. 1 is the structure chart of the first embodiment of thin mobile communication device of the present invention.Thin mobile communication 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 medium substrate 10, and antenna 11 is a planar structure, antenna 11 has the first working band 21 and the second working band 22 (as shown in Figure 2).
In addition, this side 111 be electrically connected to ground plane 12 through perforation 113 by antenna short circuit line 112.Ground plane 12 can be the system ground of a mobile communication mobile phone.
Fig. 2 be thin mobile communication device of the present invention the first embodiment return to loss analog result, wherein transverse axis represents operating frequency, loss is returned in longitudinal axis representative.In the first embodiment, select following size to simulate: the about 115mm of length of medium substrate 10, the about 50mm of width, the about 0.8mm of thickness; Without the about 15mm of interval 13 length of ground plane, the about 25mm of width, all the other spaces at medium substrate 10 are ground plane 12.As shown in Figure 2, the first embodiment can produce the first working band 21 of this antenna, 3: 1 VSWR (voltage standing wave ratio) return under 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, therefore cannot provide equivalent inductance be compensated for as 12 of ground planes around its input impedance coupling of antenna change, 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 cannot completely be contained radio wide area network five bandwidth of work frequently.
Fig. 3 is the structure chart of the second embodiment of thin mobile communication device of the present invention.Thin mobile communication device 3 has medium substrate 10, ground plane 32 and antenna 11.The overall structure of the second embodiment and the first embodiment is roughly the same, just the second embodiment's has three edges without ground plane interval 33: the first edge (being feed-in limit 331), the 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 by 32 of ground planes on medium substrate 10 around.Above-mentioned the second embodiment, although having in shape a little variation without ground plane interval, by adjusting the length of side 111 and the position of short dot, equivalent capacity and inductance that also capable of regulating produces, to reach the effect same with the first embodiment.
Fig. 4 is respectively the structure chart of the 3rd embodiment of thin mobile communication device of the present invention.Thin mobile communication 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 the first embodiment, only have or not ground plane interval 43 for 42 of ground planes around two edges: the first edge (being feed-in limit 431) and the second edge (being non-feed-in limit 432), between feed-in limit 431 and non-feed-in limit 432, have an angle theta, this angle theta is between 80 degree to 135 degree.Above-mentioned the 3rd embodiment, although having in shape a little variation without ground plane interval, by adjusting the length of side 111 and the position of short dot, equivalent capacity and inductance that also capable of regulating produces, to reach the effect same with the first embodiment.
Comprehensively above-mentioned, between this side of this antenna and this ground plane, can produce a capacitive coupling, there is an equivalent capacity, and a side short circuit of this antenna is connected to this ground plane provides an equivalent inductance, by design so can compensate general antenna with around the edge coupling influence that produces while integrating of ground plane.In the present invention, utilize the equivalent capacity and the equivalent inductance that produce can adjust the antenna feed impedance coupling that compensation affects due to edge coupling, make antenna under the situation of combining closely with contiguous ground plane, can obtain good input impedance coupling and radiation characteristic.
To sum up institute is old, and the present invention, no matter with regard to object, means and effect, all shows that it is totally different in the feature of known technology everywhere, earnestly asks auditor to perceive, and grants early quasi patent, makes Jiahui society, and true feeling moral just.Only it should be noted, above-mentioned many embodiment give an example for convenience of explanation, and the present invention's interest field required for protection should be as the criterion naturally described in the scope of claims, but not only limits to above-described embodiment.
Claims (8)
1. a thin mobile communication device, comprising:
One medium substrate, this medium substrate comprises that one is interval without ground plane, this comprises one first edge and one second edge without ground plane interval;
One ground plane, this ground plane is 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, it is interval without ground plane that this dwi hastasana is formed in this on this medium substrate, this ground plane of this this first edge without ground plane interval and this Second Edge cause institute around, and the feed-in connecting line that this first edge is this antenna is passed through, this first edge is a feed-in limit, this second edge is a non-feed-in limit, wherein this antenna utilization printing or etching technique are formed on this medium substrate, make by this to there is the distance that is less than 3mm between the side of this antenna of planar structure and this second edge, one side of the antenna end that wherein this side is planar structure, the length of this side is at least 5mm and short circuit is connected to this ground plane.
2. thin mobile communication device as claimed in claim 1, wherein this this first edge without ground plane interval and this second edge are roughly orthogonal.
3. thin mobile communication device as claimed in claim 1, wherein this this first edge without ground plane interval and this second edge have an angle, and this angle is between 80 degree to 135 degree.
4. thin mobile communication device as claimed in claim 1, wherein this also comprises one the 3rd edge without ground plane interval, wherein the 3rd edge is between this first edge and this second edge.
5. thin mobile communication device as claimed in claim 1, wherein this medium substrate is the system circuit board of a mobile communication mobile phone.
6. thin mobile communication device as claimed in claim 1, wherein this ground plane is the system ground of a mobile communication mobile phone.
7. thin mobile communication device as claimed in claim 1, wherein this first working band of this antenna contains at least 824 to 960MHz.
8. thin mobile communication device as claimed in claim 1, wherein this second working band of this antenna 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 CN102195122A (en) | 2011-09-21 |
| CN102195122B true 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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI493790B (en) | 2012-06-22 | 2015-07-21 | Acer Inc | Communication device |
| CN103515703B (en) * | 2012-06-28 | 2016-08-03 | 宏碁股份有限公司 | Communicator |
| TWI508367B (en) | 2012-09-27 | 2015-11-11 | Ind Tech Res Inst | Communication device and method for designing antenna element thereof |
| CN112928451B (en) * | 2021-01-21 | 2023-05-26 | 维沃移动通信有限公司 | Antenna circuit and electronic device |
Citations (3)
| 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 |
| CN101582534A (en) * | 2008-05-12 | 2009-11-18 | 宏碁股份有限公司 | Capacitance coupling multi-frequency annular antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI329384B (en) * | 2006-08-18 | 2010-08-21 | Hon Hai Prec Ind Co Ltd | Planar antenna device |
| FI124129B (en) * | 2007-09-28 | 2014-03-31 | Pulse Finland Oy | Dual antenna |
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2010
- 2010-03-12 CN CN201010123109.6A patent/CN102195122B/en active Active
Patent Citations (3)
| 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 |
| CN101582534A (en) * | 2008-05-12 | 2009-11-18 | 宏碁股份有限公司 | Capacitance coupling multi-frequency annular antenna |
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| Publication number | Publication date |
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| CN102195122A (en) | 2011-09-21 |
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