CN101420063B - Multi-antenna system - Google Patents
Multi-antenna system Download PDFInfo
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- CN101420063B CN101420063B CN2007101679096A CN200710167909A CN101420063B CN 101420063 B CN101420063 B CN 101420063B CN 2007101679096 A CN2007101679096 A CN 2007101679096A CN 200710167909 A CN200710167909 A CN 200710167909A CN 101420063 B CN101420063 B CN 101420063B
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- inductance
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- electric capacity
- multiaerial system
- ground plane
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Abstract
The invention provides a multiaerial system used for reducing layout limit and element limit, comprising two aerials and an isolation cell. The isolation cell is arranged between the two aerials and comprises an inductance which is a ring formed by coupling and a capacitance; wherein, the inductance and the capacitance are excited for resonance on the resonance frequency which is the same as the operation frequency of the two aerials substantially, so as to increase the isolation of the two aerials.
Description
Technical field
The present invention is about a kind of multiaerial system, particularly a kind of multiaerial system that can increase isolation between antennas.
Background technology
In wireless communication system now, often use the antenna of a plurality of frequencies of same operation in fact to transmit or receive signal simultaneously, under the situation that does not increase power or frequency range, to improve transmission usefulness.In order to reach the purpose of miniaturization, these antenna can closely be provided with, thereby causes interfering with each other.Therefore, the isolation that how to increase these antenna becomes an important problem.
Yet the method that increases isolation between antennas traditionally has many layout restrictions.Such as, if utilize slit (slit), then can only slit be arranged on the ground plane, and ground plane can not replace with other electric capacity and inductance because of electric capacity and the inductance that slit produced, the related element limits that makes is also more.In addition, the inductance that is produced also owing to be not easy modelling, also will be difficult to estimate the frequency that band ends (bandstop) effect that produces.The more important thing is the restriction owing to above-mentioned various layouts, the method that increases isolation between antennas traditionally will take bigger area.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of multiaerial system, can increase the isolation of antenna, and reduce layout restrictions and element limits.
So multiaerial system of the present invention comprises:
One dielectric layer is processed by dielectric material, comprises the first surface and the second surface that are parallel to each other in fact;
One ground plane is processed by electric conducting material, is arranged on this first surface;
Two feed lines are processed by electric conducting material, are arranged on this second surface;
Two radiant elements are arranged on this second surface, and couple this two feed lines respectively; And
One isolated location is arranged between this two radiant element, comprise being coupled to a ring-like inductance and an electric capacity, and this inductance or the maximum ends of this electric capacity is couple to this ground plane;
Wherein, this inductance and this electric capacity be stimulated and on a resonance frequency identical in fact with the frequency of operation of this two radiant element resonance.
Description of drawings
Fig. 1 is a constitutional diagram, and an embodiment of multiaerial system of the present invention is described;
Fig. 2 is an exploded view, the embodiment of key diagram 1;
Fig. 3 is a simulation drawing, the embodiment of key diagram 1 and the loss of the insertion when not having an isolated location;
Fig. 4 is a constitutional diagram, and another embodiment of the present invention is described; And
Fig. 5 is a simulation drawing, the insertion loss of the embodiment of key diagram 1 and the embodiment of Fig. 4.
The main element symbol description
21 dielectric layers
211 first surfaces
212 second surfaces
22 ground planes
23,24 feed lines
25,26 radiant elements
27 isolated locations
271 spiral inductances
272 gap capacitances
273 joint pins
274 joint pins
275 connecting lines
276 connecting lines
31,32 curves
51,52 curves
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of following cooperation, can clearly appear with reference to two embodiment of accompanying drawing.
See also Fig. 1 and Fig. 2, the embodiment that it illustrates multiaerial system of the present invention comprises a dielectric layer 21, a ground plane 22, two feed lines 23,24, two radiant elements 25,26 and an isolated location 27, to form two printed antennas.Dielectric layer 21 is processed by dielectric material, and comprises first surface 211 and the second surface 212 that is parallel to each other in fact.Ground plane 22 is processed by electric conducting material, and is printed on the first surface 211 of dielectric layer 21.Two feed lines 23,24 are processed by electric conducting material, and are printed on the second surface 212 of dielectric layer 21, and overlapping with ground plane 22.Two radiant elements 25,26 are processed by electric conducting material, and are printed on the second surface 212 of dielectric layer 21, and not overlapping with ground plane 22, and are couple to two feed lines 23,24 respectively.In the present embodiment, the frequency of operation of two radiant elements 25,26 is identical in fact.
Isolated location 27 is processed by electric conducting material, and is arranged on the dielectric layer 21, and is at two radiant elements 25, between 26.In the present embodiment, isolated location 27 comprises a spiral inductance 271, a gap capacitance 272, two joint pins 273,274 and two connecting lines 275,276.Spiral inductance 271, gap capacitance 272 and connecting line 276 are printed on the first surface 211 of dielectric layer 21, and two joint pins 273,274 run through dielectric layer 21, and connecting line 275 is printed on the second surface 212 of dielectric layer 21.One end of spiral inductance 271 is couple to an end of gap capacitance 272; And see through connecting line 276 and be couple to ground plane 22; And the other end of spiral inductance 271 sees through the other end that joint pin 273, connecting line 275 and joint pin 274 are couple to gap capacitance 272 in regular turn, so spiral inductance 271 and gap capacitance 272 can be regarded as a ring type structure.
In another embodiment, isolated location 27 also can not comprise connecting line 276, makes two ends of spiral inductance 271 all not be couple to ground plane 22.As shown in Figure 4, isolated location 27 still can increase the isolation of two radiant elements 25,26, and just its frequency range can narrow down.As shown in Figure 5, curve 51,52 is represented when connecting line 276 is arranged respectively and the loss of the insertion when not having connecting line 276.
Under the less situation of area, by using spiral inductance 271 can obtain bigger inductance value.In addition, owing to easy modelling, therefore also be prone to estimate the resonance frequency of isolated location 27.
It should be noted that spiral inductance 271 can replace with the printed inductance of other shape, also can use lump (lumped) inductance to replace in above-mentioned all embodiment.And gap capacitance 272 also can be replaced by the print capacitor or the lumped capacity of other shape.25,26 printing radiant elements that can replace with other shape of two radiant elements also can replace with antenna component (chip antenna).Thus, use the restriction of element therefore to tail off.Moreover; Spiral inductance 271 and gap capacitance 272 are to be printed on the first surface 211 of dielectric layer 21; But also can be to be printed on the second surface 212 of dielectric layer 21, and set position can be decided according to the radiation intensity of two radiant elements 25,26 on all directions.When the radiation intensity of two radiant elements 25,26 heals when strong, the antenna isolation effect that isolated component 27 provides better.
Conclude above-mentionedly, the present invention comprises the isolated component of an inductance and an electric capacity by between two antennas, being provided with one, and an end ground connection is arranged, to reach the purpose that increases isolation between antennas and reduce layout restrictions and element limits.
The above person is merely preferred embodiment of the present invention, and when not limiting the scope that the present invention implements with this, the simple equivalent of promptly doing according to content of the present invention generally changes and modifies, and all still belongs in the scope of the present invention.
Claims (4)
1. multiaerial system comprises:
One dielectric layer is processed by dielectric material, comprises the first surface and the second surface that are parallel to each other in fact;
One ground plane is processed by electric conducting material, is arranged on this first surface;
Two feed lines are processed by electric conducting material, are arranged on this second surface;
Two radiant elements are arranged on this second surface, and couple this two feed lines respectively; And
One isolated location is arranged between this two radiant element, comprise being coupled to a ring-like inductance and an electric capacity, and this inductance or the maximum ends of this electric capacity is couple to this ground plane;
Wherein, this inductance and this electric capacity be stimulated and on a resonance frequency identical in fact with the frequency of operation of this two radiant element resonance.
2. multiaerial system according to claim 1, wherein, the radiation excitation of this electric capacity and this two radiant element of this electroreception.
3. multiaerial system according to claim 2, wherein, the position of this isolated location is decided according to the radiation intensity of this two radiant element on all directions.
4. multiaerial system according to claim 1, wherein, this two radiant element is processed by electric conducting material, and is printed on this second surface, and this inductance and this electric capacity are arranged on this first surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101679096A CN101420063B (en) | 2007-10-26 | 2007-10-26 | Multi-antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101679096A CN101420063B (en) | 2007-10-26 | 2007-10-26 | Multi-antenna system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101420063A CN101420063A (en) | 2009-04-29 |
| CN101420063B true CN101420063B (en) | 2012-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101679096A Active CN101420063B (en) | 2007-10-26 | 2007-10-26 | Multi-antenna system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101420063B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157794B (en) * | 2010-02-12 | 2013-08-14 | 大众电脑股份有限公司 | Three-frequency band antenna produced by resonating |
| JP5744921B2 (en) * | 2010-02-26 | 2015-07-08 | デカ・プロダクツ・リミテッド・パートナーシップ | RFID system with eddy current trap |
| CN102104185A (en) * | 2010-12-01 | 2011-06-22 | 中兴通讯股份有限公司 | Multiple input multiple output (MIMO) array antenna |
| US8922448B2 (en) * | 2012-09-26 | 2014-12-30 | Mediatek Singapore Pte. Ltd. | Communication device and antennas with high isolation characteristics |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6297711B1 (en) * | 1992-08-07 | 2001-10-02 | R. A. Miller Industries, Inc. | Radio frequency multiplexer for coupling antennas to AM/FM/WB, CB/WB, and cellular telephone apparatus |
| CN1588694A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Small high isolation degree plane double antenna |
| CN1635663A (en) * | 2003-12-31 | 2005-07-06 | 广达电脑股份有限公司 | Multi-frequency antenna |
-
2007
- 2007-10-26 CN CN2007101679096A patent/CN101420063B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6297711B1 (en) * | 1992-08-07 | 2001-10-02 | R. A. Miller Industries, Inc. | Radio frequency multiplexer for coupling antennas to AM/FM/WB, CB/WB, and cellular telephone apparatus |
| CN1635663A (en) * | 2003-12-31 | 2005-07-06 | 广达电脑股份有限公司 | Multi-frequency antenna |
| CN1588694A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Small high isolation degree plane double antenna |
Non-Patent Citations (1)
| Title |
|---|
| Chi-Yuk Chiu等.Reduction of Mutual Coupling Between Closely-Packed Antenna Elements.《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》.2007,第55卷(第6期),1732-1738. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101420063A (en) | 2009-04-29 |
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