CN104157955B - Communicator with ground connection surface antenna - Google Patents
Communicator with ground connection surface antenna Download PDFInfo
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- CN104157955B CN104157955B CN201310174865.5A CN201310174865A CN104157955B CN 104157955 B CN104157955 B CN 104157955B CN 201310174865 A CN201310174865 A CN 201310174865A CN 104157955 B CN104157955 B CN 104157955B
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- metal portion
- edge
- antenna
- communicator
- earth element
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Abstract
The invention provides a kind of communicator for having and being grounded surface antenna, including an earth element, a medium substrate and an antenna element.Medium substrate has a first surface and a second surface adjacent to earth element.Antenna element includes one first metal portion and one second metal portion.First metal portion is located at first surface, and with a load point.Second metal portion is located at second surface.First metal portion is electrically connected to the second metal portion via a conductive through hole, and conductive through hole is at or adjacent to a first edge of the first metal portion.First edge is away from earth element.Second metal portion is covered in the projection of first surface by the first metal portion.
Description
Technical field
The present invention be on a kind of communicator, and particularly it is a kind of have ground connection surface antenna action communication device.
Background technology
Recently as the rapid advances of wireless communication technology, communicator is not only using function as demand, in external form
Make every effort to towards light, thin direction design, the sight to attract consumer.Therefore it is empty in communicator more and more limited design
Between in, how using the antenna element of small size to reach wideband or multi-band operation, it has also become an important class of Antenna Design
Topic.
In view of this, in the Antenna Design of communicator, such as how in the antenna element coupling apparatus of a small size
Ground plane formation one is grounded surface antenna, and can effectively inspire the resonance mode of a wideband, improves ground connection surface antenna in operation
Impedance matching and antenna efficiency in frequency band, are the big problem on Antenna Design.
The content of the invention
The present invention provides a kind of communicator for having and being grounded surface antenna, utilizes the ground connection in antenna element and communicator
Element forms the ground connection surface antenna of asymmetric dipole antenna (dipole antenna) structure, and is located in antenna element and to be situated between
Two metal portions of the different surfaces of matter substrate are connected with each other by conductive through hole.Thereby, it will help what improvement was formed connects
The impedance matching of the resonance mode of ground-plane antenna, and then increase the operation frequency range and antenna efficiency of ground connection surface antenna.
The communicator of the present invention, including an earth element, a medium substrate and an antenna element.Medium substrate is neighbouring to be connect
Ground element, and with a first surface and a second surface.Antenna element includes one first metal portion and one second metal portion.The
One metal portion is located at first surface, and has a load point.Second metal portion is located at second surface.First metal portion is conductive via one
Through hole is electrically connected to the second metal portion, and conductive through hole is at or adjacent to a first edge of the first metal portion.First edge
Away from earth element.Second metal portion is covered in the projection of first surface by the first metal portion.
For the features described above and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings
It is described in detail below.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of the communicator of the present invention；
Fig. 2 is has the second metal portion and without the second metal portion in the first embodiment of the communicator of the present invention
Return loss plot；
Fig. 3 is has the second metal portion and without the second metal portion in the first embodiment of the communicator of the present invention
Antenna efficiency figure；
Fig. 4 is the structural representation of the second embodiment of the communicator of the present invention；
Fig. 5 is the structural representation of the 3rd embodiment of the communicator of the present invention.
Description of reference numerals：
1、4、5：Communicator；
10：Antenna element；
11：Earth element；
12：Medium substrate；
121：The first surface of medium substrate；
122：The second surface of medium substrate；
13：First metal portion；
131：Load point；
132：First edge；
133：Diagonal；
14、44：Second metal portion；
141：Centre portion；
441：Section；
15、551、552：Conductive through hole；
16：Match circuit；
17：Signal source；
21：Frequency band；
22、23：Return loss plot；
31、32：Antenna efficiency curve；
d：First distance.
Embodiment
For the above objects, features and advantages of the present invention can be become apparent, it is cited below particularly go out the present invention specific reality
Example is applied, and coordinates institute's accompanying drawings, is described in detail below.
Fig. 1 is the structural representation of the first embodiment of the communicator of the present invention.Fig. 1 is refer to, communicator 1 includes
One earth element 11, a medium substrate 12 and an antenna element 10.Wherein, medium substrate 12 has a first surface 121 and one
Second surface 122, and antenna element 10 has one first metal portion 13 and one second metal portion 14.
The approximate reverse U shape of shape of first metal portion 13, and positioned at first surface 121.In addition, the first metal portion 13 has
There are a load point 131 and a first edge 132, and first edge 132 is an edge of a centre portion of the reverse U shape and remote
From earth element 11.From the point of view of another angle, the first metal portion 13 also includes a second edge relative with first edge 132.
Wherein, the second edge of the first metal portion 13 include a groove, with the shape for causing the first metal portion 13 be similar to one fall U-shaped
Shape.In addition, load point 131 is arranged in the second edge of the first metal portion 13, and the side wall of the neighbouring groove.Furthermore, the
The opening of the groove of one metal portion 13 is to be separated by one relative between earth element 11, and first edge 132 and earth element 11
First apart from d.Wherein, the length of first edge 132 between first between 0.5 times to 2.0 times of d.
The shape of a second metal portion 14 also approximate reverse U shape, and positioned at second surface 122.In addition, the reverse U shape
One centre portion 141 is parallel to each other adjacent to first edge 132, and with first edge 132.Furthermore, the second metal portion 14 is in first
The projection on surface 121 is covered by the first metal portion 13.That is, the second metal portion 14 is relative to first across medium substrate 12
Metal portion 13.
Further to seeing, the first metal portion 13 is electrically connected to the second metal portion 14 via a conductive through hole 15.Wherein,
Conductive through hole 15 runs through the first metal portion 13, the metal portion 14 of medium substrate 12 and second.In addition, to the first metal portion 13
Speech, conductive through hole 15 is at or adjacent to the end point of first edge 132, and conductive through hole 15 and load point 131 substantially neighbour respectively
Two end points of a pair of linea angulatas 133 of nearly first metal portion 13.Furthermore, for the second metal portion 14, conductive through hole 15 be located at or
It is a corner of neighbouring second metal portion 14.
Operationally, antenna element 10 has the ground plane day of asymmetric dipole antenna configuration with the formation of earth element 11 one
Line.In addition, communicator 1 transmits a signal source 17 to load point 131, with excitation antenna element 10.Thereby, the first metal portion 13
A resonance mode can be produced in a frequency band, so as to cause antenna element 10 to operate in the frequency band.In addition, as shown in figure 1, one
In embodiment, communicator 1 further includes a match circuit 16, and match circuit 16 is electrically connected with the first metal portion 13.In operation
On, match circuit 16 provides an impedance so that antenna element 10 operates in the frequency band.In addition, with the setting of match circuit 16,
The length of first edge 131 with first apart from d summation be less than the frequency band a low-limit frequency 0.1 times of wavelength, and be much smaller than
The resonance path length of 0.25 times of wavelength needed for general traditional antenna element.
It is noted that in the case where being not provided with the second metal portion 14, the Surface current distribution of the first metal portion 13
May not be very uniform.For example, because the first edge 132 of the first metal portion 13 is away from load point 131, therefore the first gold medal
The region of neighbouring first edge 132 is by have the region of weaker surface current in category portion 13 in the first metal portion 13.However,
With the setting of the second metal portion 14, because the first metal portion 13 can be electrically connected to the second metal portion by conductive through hole 15
14, and conductive through hole 15 is to be located at or neighbouring first edge 132, therefore the surface current of the first metal portion 13 can be by the
Two metal portions 14 and be distributed it is more uniform, so as to improve the ground connection surface antenna that antenna element 10 is formed with earth element 11
Impedance matching, and reach increase ground connection surface antenna antenna efficiency and operate frequency range effect.
For example, Fig. 2 is the first embodiment of the communicator of the present invention is with the second metal portion and does not have
Return loss (return loss) figure of second metal portion.Wherein, the size of the antenna element 10 cited by this embodiment is only about
For 10 × 10 × 1mm3, and the size of earth element 11 is about 110 × 60mm2.As shown in Fig. 2 antenna element 10 operates in frequency band
21, and the frequency range of frequency band 21 is about 746~960MHz, and cover LTE band13 and GSM850/900 frequency bands.In addition, returning
Return loss when ripple damage curve 22 is to represent that antenna element 10 does not have the second metal portion 14, and return loss plot 23
Return loss during representing that antenna element 10 has the second metal portion 14., can from the point of view of comparison return loss plot 22 and 23
, it is evident that with the setting of the second metal portion 14, the return loss of antenna element 10 can improve from return loss plot 22
To return loss plot 23.In addition, the improvement amplitude of return loss is about 1dB, and highest can improve amplitude about 2.7dB, from
And it is effectively increased the operation frequency range of antenna element 10.
Fig. 3 has the second metal portion and without the second metal portion for the first embodiment of the communicator of the present invention
Antenna efficiency figure.Wherein, antenna efficiency curve 31 (radiation efficiency for including return loss) is to represent antenna element 10 not
Radiation efficiency during with the second metal portion 14, and antenna efficiency curve 32 (radiation efficiency for including return loss) is to represent
Antenna element 10 has radiation efficiency during the second metal portion 14.From the point of view of comparison antenna efficiency curve 31 and 32, it will be evident that
With the setting of the second metal portion 14, the radiation efficiency of antenna element 10 can improve to antenna efficiency from antenna efficiency curve 31
Curve 32.In addition, the improvement amplitude in the internal antenna efficiency of frequency band 21 is about 10%, and it is about 14% that highest, which can improve amplitude,.
Fig. 4 is the structural representation of the second embodiment of the communicator of the present invention.Communication cited by second embodiment
Device 4 is substantially similar to the communicator 1 cited by first embodiment.Wherein, it is in first embodiment main difference
It is approximate one inverted L-shaped in the shape of, the second metal portion 44 in antenna element 10.In addition, an inverted L-shaped section 441 is
Neighbouring first edge 132, and be substantially parallel to each other with first edge 132.Herein under similar structure, cited by second embodiment
Communicator 4 can also reach effect similar to first embodiment.
Fig. 5 is the structural representation of the 3rd embodiment of the communicator of the present invention.Communication cited by 3rd embodiment
Device 5 is substantially identical with the communicator 1 cited by first embodiment.Wherein, it is in first embodiment main difference
In the first metal portion 13 is electrically connected to the second metal portion 14 by antenna element 10 by two conductive through holes 551,552.Herein
Under similar structure, the communicator 5 cited by 3rd embodiment can also reach effect similar to first embodiment.
In summary, the present invention is to be formed using the earth element in antenna element and communicator with asymmetric idol
The ground connection surface antenna of pole antenna structure.In addition, antenna element has two metals of the different surfaces for being located at medium substrate respectively
Portion, and two metal portions are connected with each other by conductive through hole.Consequently, it is possible to which the resonance of formed ground connection surface antenna will can be improved
The impedance matching of mode, and then increase the operation frequency range and antenna efficiency of ground connection surface antenna.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a kind of communicator, it is characterised in that including:
One earth element；
One medium substrate, the neighbouring earth element, medium substrate has a first surface and a second surface；And
One antenna element, including one first metal portion and one second metal portion, the antenna element connect with earth element formation one
Ground-plane antenna a, load point is arranged on first metal portion, and first metal portion is located at the first surface, the second metal position
In the second surface and the impedance matching of the ground connection surface antenna is adjusted, first metal portion is electrically connected to via a conductive through hole
Second metal portion, first metal portion includes the one the of a first edge away from the earth element and the neighbouring earth element
Two edges, a pair of linea angulatas of first metal portion have the first end point for connecting the first edge and connect the second edge
One second end points, the conductive through hole is adjacent to cornerwise first end point, and the load point is adjacent to cornerwise second end
Point, second metal portion is covered in the projection of the first surface by first metal portion.
2. communicator according to claim 1, it is characterised in that first metal portion is shaped as a reverse U shape, and
The first edge is an edge of a centre portion of the reverse U shape.
3. communicator according to claim 1, it is characterised in that the first edge is somebody's turn to do relative to the second edge
Load point is arranged on the second edge.
4. communicator according to claim 3, it is characterised in that the second edge includes a groove, and the groove
Opening is relative to the earth element, side wall of the load point adjacent to the groove.
5. communicator according to claim 1, it is characterised in that be separated by one between the first edge and the earth element
First distance, and the first edge length between 0.5 times to 2.0 times of first distance.
6. communicator according to claim 5, it is characterised in that also include：
One match circuit, is electrically connected with first metal portion, and the match circuit provides an impedance so that the antenna element is operated in
One frequency band, and 0.1 times wavelength of the summation less than a low-limit frequency of the frequency band of the length of the first edge and first distance.
7. communicator according to claim 1, it is characterised in that the conductive through hole runs through first metal portion, Jie
Matter substrate and second metal portion, and the conductive through hole be located at or neighbouring second metal portion a corner.
8. communicator according to claim 1, it is characterised in that being shaped as second metal portion is one inverted L-shaped, and
An inverted L-shaped section is parallel to each other adjacent to the first edge, and with the first edge.
9. communicator according to claim 1, it is characterised in that second metal portion is shaped as a reverse U shape, and
One centre portion of the reverse U shape is parallel to each other adjacent to the first edge, and with the first edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174865.5A CN104157955B (en) | 2013-05-13 | 2013-05-13 | Communicator with ground connection surface antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174865.5A CN104157955B (en) | 2013-05-13 | 2013-05-13 | Communicator with ground connection surface antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104157955A CN104157955A (en) | 2014-11-19 |
| CN104157955B true CN104157955B (en) | 2017-08-04 |
Family
ID=51883403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310174865.5A Active CN104157955B (en) | 2013-05-13 | 2013-05-13 | Communicator with ground connection surface antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104157955B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1906807A (en) * | 2004-04-09 | 2007-01-31 | 古河电气工业株式会社 | Compact antenna |
| EP2107635A1 (en) * | 2008-03-31 | 2009-10-07 | TDK Corporation | Two-tier wide band antenna |
| CN101567483A (en) * | 2008-04-23 | 2009-10-28 | 宏碁股份有限公司 | Multi-frequency folded coil antenna |
| EP2139065A1 (en) * | 2008-06-23 | 2009-12-30 | Alps Electric Co., Ltd. | Antenna device |
-
2013
- 2013-05-13 CN CN201310174865.5A patent/CN104157955B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1906807A (en) * | 2004-04-09 | 2007-01-31 | 古河电气工业株式会社 | Compact antenna |
| EP2107635A1 (en) * | 2008-03-31 | 2009-10-07 | TDK Corporation | Two-tier wide band antenna |
| CN101567483A (en) * | 2008-04-23 | 2009-10-28 | 宏碁股份有限公司 | Multi-frequency folded coil antenna |
| EP2139065A1 (en) * | 2008-06-23 | 2009-12-30 | Alps Electric Co., Ltd. | Antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104157955A (en) | 2014-11-19 |
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