CN100353610C - Small high isolation degree plane double antenna - Google Patents
Small high isolation degree plane double antenna Download PDFInfo
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- CN100353610C CN100353610C CNB2004100530220A CN200410053022A CN100353610C CN 100353610 C CN100353610 C CN 100353610C CN B2004100530220 A CNB2004100530220 A CN B2004100530220A CN 200410053022 A CN200410053022 A CN 200410053022A CN 100353610 C CN100353610 C CN 100353610C
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Abstract
The present invention relates to a plane double antenna with small high isolation degree for the technical field of communication, which comprises antenna units, power feed ports, a dielectric plate and earthing units, wherein the two antenna units are positioned at the front of the dielectric plate, and are symmetrically distributed; each earthing unit is composed of an earthing part at the front of the dielectric plate, an earthing part at the reverse surface of the dielectric plate and an earthing part at the bottom of the dielectric plate, and the earthing parts are communicated into a whole; the earthing part at the front of the dielectric plate is split into a left, a middle and a right parts; the middle part is in a shape with a boss; cores of the power feed ports are connected with the antenna units; the earthing units are connected with external conductors of the power feed ports. The present invention has the advantages of simple structure, small distance between the antenna units and small mutual coupling; when the plane double antenna with small high isolation degree is merged, antenna gains are high and are evenly distributed within the range of horizontal 360 DEG.
Description
Technical field
The present invention relates to a kind of antenna, especially a kind of small-sized high-isolation plane double antenna.Be used for communication technical field.
Background technology
In the prior art, generally adopt single antenna at communicating terminal, it is low to gain, poor anti jamming capability.There is minority to adopt many antennas, but, makes the antenna element spacing very big in order to eliminate the influence of mutual coupling.Thereby make the antenna cumulative volume very big, be not easy to carry.
Find by literature search, number of patent application 02126816.9, patent name is: the double antenna that can control radiation characteristic in a kind of folding type mobile communication terminal, patent publication No. 1399368, this double antenna comprises first directional antenna on the folded part that is installed in communication terminal, and is installed in second directional antenna on the main body of communication terminal.In fact just second directional antenna is in running order always for this double antenna, and first directional antenna is just assisted the radiation field of adjusting communication terminal when conversation, two antennas can't use as two antenna elements independently, and the gain of antenna was very low when this also made non-talking state.On the other hand, owing to adopt directional antenna,, can't realize that also omnidirectional signal receives even two antennas are worked simultaneously.
Find also in the retrieval that people such as in November, 2003 Tayeb A.Denidni are at IEEE TRANSACTIONS ONVEHICULAR TECHNOLOGY (vehicle-mounted technology), 52 the 6th phases of volume were delivered " ExperimentalInvestigations of a New Adaptive Dual-Antenna Array for HandsetApplications (a kind of new self adaptation double antenna battle array experimental study that is used for mobile phone) ", adopt double antenna and adaptive algorithm to realize smart antenna at portable terminal, two antenna element spacings are half-wavelength, can realize two independently antenna elements.But when operating frequency was the 1000MHz left and right sides, the antenna element spacing was too big, and antenna is difficult to place at portable terminal.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of small-sized high-isolation plane double antenna is provided, make it solve communicating terminal and adopt single antenna, low, poor anti jamming capability gains, and portable terminal adopts many antennas, can't the weakening of the mutual coupling that closely causes owing to the unit.
The present invention is achieved by the following technical solutions, the present invention includes: antenna element, feed port, dielectric-slab and ground unit.Two antenna elements are positioned at the dielectric-slab front, and axial symmetry distributes.Ground unit is made of the grounded part that is positioned at the dielectric-slab front, the grounded part that is positioned at the grounded part of dielectric-slab reverse side and is positioned at dielectric-slab bottom, and is communicated with as a wholely, can improve the radiation characteristic of antenna.The grounded part that is positioned at the dielectric-slab front is divided into left, center, right three parts, and mid portion is the shape of band boss, by the height of boss in the middle of regulating and the ground unit length and the width of the left and right sides, can adjust the isolation of antenna and the distribution of radiation field.The core and the antenna element of feed port join.The outer conductor of ground unit and feed port is connected.
Described antenna element is converted into 90 degree, can reduce antenna and take up space under the prerequisite that guarantees electrical length.Bending part has 45 degree chamferings, the electrical length that can regulate antenna.
The grounded part that described ground unit is positioned at the dielectric-slab front is left, center, right three parts, between left, the middle part slit is arranged, and a described antenna element passes this slit; In, between the right half slit is arranged, described another antenna element passes this slit, can effectively isolate the mutual coupling at two feed port places.
Described ground unit is made of the ground unit that is positioned at the dielectric-slab front, the ground unit that is positioned at the ground unit of dielectric-slab reverse side and is positioned at dielectric-slab bottom, and is communicated with as a whole.
Described antenna element and ground unit are conductor.
Described dielectric-slab is the high-k material.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention is because be provided with the public ground of band boss between two described antenna elements, and described antenna element is curved 90 degree, and the outer chamfering of increase, makes described antenna element spacing littler, and mutual coupling is littler, becomes two independently antenna elements.Further, when described two antenna elements are merged into an antenna use,, make the antenna gain height, and in horizontal plane 360 degree scopes, be evenly distributed owing to symmetrical configuration, described antenna element spacing reduce, mutual coupling is little.
Description of drawings
Fig. 1 is the Facad structure schematic diagram of a kind of small-sized high-isolation plane double antenna of the present invention.
Fig. 2 is the structural representation of looking up of a kind of small-sized high-isolation plane double antenna of the present invention.
Fig. 3 is the reverse side structural representation of a kind of small-sized high-isolation plane double antenna of the present invention.
Embodiment
As shown in Figure 1, the present invention includes: first antenna element 1, dielectric-slab 2, second antenna element 3, ground unit 4, first feed port 5, second feed port 6.First antenna element 1, second antenna element 3 is positioned at dielectric-slab 2 fronts, axial symmetry distributes, the core of first feed port 5 and first antenna element 1 join, the core of second feed port 6 and second antenna element 3 join, ground unit 4 is by the grounded part that is positioned at the dielectric-slab front, the grounded part that is positioned at the dielectric-slab reverse side constitutes with the grounded part that is positioned at the dielectric-slab bottom, and be communicated with as a whole, the grounded part that is positioned at dielectric-slab 2 fronts is divided into a left side, in, right three parts, mid portion is the shape of band boss, a left side, between the middle part slit is arranged, first antenna element 1 passes this slit, in, the slit is arranged between the right half, and second antenna element 3 passes this slit.
Ground unit 4 is connected with the outer conductor of first feed port 5, second feed port 6.
Dielectric-slab 2 is the high-k material.
Claims (5)
1, a kind of small-sized high-isolation plane double antenna, comprise: first antenna element (1), dielectric-slab (2), second antenna element (3), ground unit (4), first feed port (5), second feed port (6), it is characterized in that, first antenna element (1), second antenna element (3) is positioned at dielectric-slab (2) front, axial symmetry distributes, the core of first feed port (5) and first antenna element (1) join, the core of second feed port (6) and second antenna element (3) join, ground unit (4) is by the grounded part that is positioned at the dielectric-slab front, the grounded part that is positioned at the dielectric-slab reverse side constitutes with the grounded part that is positioned at the dielectric-slab bottom, and be communicated with as a whole, be positioned at the positive grounded part of dielectric-slab (2) and be divided into a left side, in, right three parts, mid portion is the shape of band boss, a left side, between the middle part slit is arranged, first antenna element (1) passes this slit, in, the slit is arranged between the right half, and second antenna element (3) passes this slit.
2, small-sized high-isolation plane double antenna according to claim 1 is characterized in that, first antenna element (1), second antenna element (3) all are the monopoles that are converted into 90 degree.
3, small-sized high-isolation plane double antenna according to claim 2 is characterized in that, first antenna element (1), second antenna element (3) bending part have chamfering.
4, according to claim 1 or 2 or 3 described small-sized high-isolation plane double antennas, it is characterized in that first antenna element (1), second antenna element (3) and ground unit (4) are conductor.
5, small-sized high-isolation plane double antenna according to claim 1 is characterized in that, ground unit (4), first feed port (5) and the outer conductor of second feed port (6) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100530220A CN100353610C (en) | 2004-07-22 | 2004-07-22 | Small high isolation degree plane double antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100530220A CN100353610C (en) | 2004-07-22 | 2004-07-22 | Small high isolation degree plane double antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588694A CN1588694A (en) | 2005-03-02 |
| CN100353610C true CN100353610C (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100530220A Expired - Fee Related CN100353610C (en) | 2004-07-22 | 2004-07-22 | Small high isolation degree plane double antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN100353610C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7183981B1 (en) * | 2005-09-02 | 2007-02-27 | Arcadyan Technology Corporation | Monopole antenna |
| CN101420063B (en) * | 2007-10-26 | 2012-11-07 | 瑞昱半导体股份有限公司 | Multi-antenna system |
| FR2923658A1 (en) * | 2007-11-09 | 2009-05-15 | Thomson Licensing Sas | SYSTEM OF TWO ANTENNAS ISOLATED AT A WORKING FREQUENCY |
| CN101359770B (en) * | 2008-09-19 | 2012-06-20 | 清华大学 | Wide band double antenna system for mobile terminals |
| US8947318B2 (en) * | 2011-04-22 | 2015-02-03 | Sony Mobile Communications Inc. | Antenna apparatus |
| CN102280696A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Half-wave transmission decoupling small-space microstrip array antenna |
| CN103296392A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Antenna device |
| CN103378414A (en) * | 2012-04-25 | 2013-10-30 | 国基电子（上海）有限公司 | Multi-aerial system |
| US8922448B2 (en) * | 2012-09-26 | 2014-12-30 | Mediatek Singapore Pte. Ltd. | Communication device and antennas with high isolation characteristics |
| CN105071020A (en) * | 2015-07-27 | 2015-11-18 | 禾邦电子(苏州)有限公司 | Antenna and electronic device at least comprising antenna |
| US10910697B2 (en) * | 2017-01-26 | 2021-02-02 | Lg Electronics Inc. | Mobile terminal |
| CN110752445B (en) * | 2019-10-25 | 2021-10-15 | 歌尔科技有限公司 | Antenna radiation system and communication terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230037A (en) * | 1997-12-11 | 1999-09-29 | 阿尔卡塔尔公司 | Multifrequency microstrip antenna and device including said antenna |
| US6535170B2 (en) * | 2000-12-11 | 2003-03-18 | Sony Corporation | Dual band built-in antenna device and mobile wireless terminal equipped therewith |
| US6717551B1 (en) * | 2002-11-12 | 2004-04-06 | Ethertronics, Inc. | Low-profile, multi-frequency, multi-band, magnetic dipole antenna |
| US20040090371A1 (en) * | 2002-11-08 | 2004-05-13 | Court Rossman | Compact antenna with circular polarization |
-
2004
- 2004-07-22 CN CNB2004100530220A patent/CN100353610C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230037A (en) * | 1997-12-11 | 1999-09-29 | 阿尔卡塔尔公司 | Multifrequency microstrip antenna and device including said antenna |
| US6535170B2 (en) * | 2000-12-11 | 2003-03-18 | Sony Corporation | Dual band built-in antenna device and mobile wireless terminal equipped therewith |
| US20040090371A1 (en) * | 2002-11-08 | 2004-05-13 | Court Rossman | Compact antenna with circular polarization |
| US6717551B1 (en) * | 2002-11-12 | 2004-04-06 | Ethertronics, Inc. | Low-profile, multi-frequency, multi-band, magnetic dipole antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1588694A (en) | 2005-03-02 |
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