CN102800944A - Asymmetric antenna and multiple input multiple output (MIMO) antenna with same - Google Patents
Asymmetric antenna and multiple input multiple output (MIMO) antenna with same Download PDFInfo
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- CN102800944A CN102800944A CN201110145196XA CN201110145196A CN102800944A CN 102800944 A CN102800944 A CN 102800944A CN 201110145196X A CN201110145196X A CN 201110145196XA CN 201110145196 A CN201110145196 A CN 201110145196A CN 102800944 A CN102800944 A CN 102800944A
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- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
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- 238000002955 isolation Methods 0.000 abstract description 2
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Abstract
The invention discloses an asymmetric antenna, which comprises a feeder line and a metal sheet. The feeder line feeds signals in the metal sheet in a coupling way. At least a first micro-channel structure and a second micro-channel structure are asymmetrically hollowed in the metal sheet, so that the antenna has at least two different resonance frequency bands. According to the asymmetric antenna, at least the first and second micro-channel structures are asymmetrically hollowed in the metal sheet, so that a plurality of resonance points can be easily produced, and are difficult to counteract, and multimode resonance can be easily realized. In addition, the invention also discloses a multiple input multiple output (MIMO) antenna comprising the asymmetric antenna. The MIMO antenna is high in isolation.
Description
Technical field
The present invention relates to wireless communication field, more particularly, relate to a kind of asymmetrical antenna and have the MIMO antenna of this asymmetrical antenna.
Background technology
The antenna usage space is little, operating frequency is low when running in traditional antenna design, when being operated in problem such as multimode, the performance of antenna will be limited by the antenna volume size greatly.The electrical length that reduces corresponding antenna of antenna volume also will be affected, and antenna radiation efficiency and operating frequency will change.Traditional dipole antenna and PIFA antenna just seem unable to do what one wishes in the face of problems such as existing communicating terminal small size, broadbands the time, design difficulty greatly finally can not satisfy the requirement of use.Traditional antenna is only used the radiation requirement that realizes multimode through the terminated line of outside in the low-frequency range design; In antenna-feedback system, be the job requirement that can realize low frequency, multimode on the function behind the adding matching network, very large part energy is lost on the matching network but its radiation efficiency will reduce greatly.Existing ultra material miniature antenna; Like publication number is the Chinese patent of CN201490337; Integrated novel artificial electromagnetic material in design, so its radiation has profuse dispersion characteristics, can form multiple radiation mode; Can remove loaded down with trivial details impedance matching network from, the impedance matching that this abundant dispersion characteristics are multifrequency point brings great convenience.However existing ultra material miniature antenna has also received great restriction in the process of design in the face of problems such as existing terminal equipment small size, low operating frequency, broadband multimodes the time.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned deficiency of prior art, proposes a kind ofly to be easy to realize multimodeization and at the low still well behaved asymmetrical antenna of operating frequency and have the MIMO antenna of this asymmetrical antenna.
The technical scheme that the present invention solves its technical problem employing is to propose a kind of asymmetrical antenna; It comprises feeder line, sheet metal; Said feeder line is through the said sheet metal of coupled modes feed-in; At least engrave asymmetrical first micro groove structure and second micro groove structure on the said sheet metal, made said antenna have at least two different resonance band.
Further, said first micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
Further, said second micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
Further, said antenna also comprises the medium that is used to place said feeder line and said sheet metal.
Further, said medium is air, pottery, epoxy resin base plate or ptfe substrate.
Further, said first micro groove structure and said second micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved hollow out on said sheet metal.
Further, said feeder line does not contact with said sheet metal, through the said sheet metal of capacitive coupled modes feed-in.
Further, but said feeder line connects said sheet metal through short circuit point makes said feeder line through the said sheet metal of inductive coupled mode feed-in.
The present invention also provides a kind of MIMO antenna, and it comprises the described asymmetrical antenna of a plurality of claims 1.
Further, each feeder line of a plurality of said asymmetrical antennas all connects a reception/transmitter, and whole reception/transmitters are connected in baseband signal processor.
According to asymmetrical antenna of the present invention, on sheet metal, engraved asymmetric first micro groove structure and second micro groove structure at least, therefore can produce a plurality of resonance points at an easy rate, and the difficult counteracting of resonance point, be easy to realize multimode resonance.The present invention also discloses a kind of MIMO antenna that comprises above-mentioned asymmetrical antenna, and this MIMO antenna has high-isolation.
Description of drawings
Fig. 1 is an asymmetrical antenna structural representation of the present invention;
Fig. 2 is the asymmetrical antenna first preferred embodiments front view of the present invention;
Fig. 3 is the asymmetrical antenna second preferred embodiments front view of the present invention;
Fig. 4 is asymmetrical antenna the 3rd a preferred embodiments front view of the present invention.
Fig. 5 a is the sketch map of complementary split ring resonator structure;
Fig. 5 b is depicted as the sketch map of complementary helix structure;
Fig. 5 c is depicted as the sketch map of opening helical ring structure;
Fig. 5 d is depicted as the sketch map of two opening helical ring structures;
Fig. 5 e is depicted as the sketch map of complementary folding line structure;
Fig. 6 a is the sketch map of deriving of complementary its geometry of split ring resonator structure shown in Fig. 5 a;
Fig. 6 b is the sketch map of deriving of complementary its expansion of split ring resonator structure shown in Fig. 5 a;
Fig. 7 a is the structural representation behind the complementary split ring resonator structure shown in three Fig. 5 a compound;
Fig. 7 b is the compound sketch map that the complementary split ring resonator structure shown in two Fig. 5 a and Fig. 5 b are depicted as complementary helix structure;
Fig. 8 is the structural representation after the complementary split ring resonator structural group battle array shown in four Fig. 5 a.
Embodiment
As shown in Figure 1, Fig. 1 is an asymmetrical antenna structural representation of the present invention.Among Fig. 1, asymmetrical antenna of the present invention comprises feeder line 1, sheet metal 2.At least engrave asymmetrical first micro groove structure 100 and second micro groove structure 200 on the sheet metal 2, made asymmetrical antenna have at least two different resonant.Asymmetric first micro groove structure 100 that is meant here is different with pattern, size and/or the locus of second micro groove structure 200, and those differences cause first micro groove structure 100 different with the resonance band of second micro groove structure 200.
First micro groove structure 100 of the present invention and second micro groove structure 200 can be the complementary helix structures shown in the complementary split ring resonator structure shown in Fig. 5 a, Fig. 5 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 5 c, Fig. 5 d, the complementary folding line structure shown in Fig. 5 e or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.Derive and be divided into two kinds; A kind of is that geometry is derived; Another kind is that expansion is derived, and the geometry is here derived and is meant that function class derives like, variform structure, is for example derived to class of a curve structure, triangle class formation and other different polygon class formation by the square frame class formation; The expansion is here derived and promptly on the basis of Fig. 5 a to Fig. 5 e, is offered new groove to form new micro groove structure; Complementary split ring resonator structure with shown in Fig. 5 a is an example, and Fig. 6 a is its geometry sketch map of deriving, and Fig. 6 b is its geometry sketch map of deriving.Compound being meant here, a plurality of stacks of the micro groove structure of Fig. 5 a to Fig. 5 e form a new micro groove structure, shown in Fig. 7 a, are the structural representation of the complementary split ring resonator structure shown in three Fig. 5 a after compound; Shown in Fig. 7 b, be that the complementary split ring resonator structure shown in two Fig. 5 a and Fig. 5 b are depicted as the common structural representation after compound of complementary helix structure.The group battle array here is meant the micro groove structure that is formed an integral body by the micro groove structure array on same sheet metal shown in a plurality of Fig. 5 a to Fig. 5 e, and is as shown in Figure 8, is the structural representation after a plurality of complementary split ring resonator structural group battle arrays shown in Fig. 5 a.But the present invention's first micro groove structure 100 and second micro groove structure 200 are asymmetric, and concrete asymmetric manner specifies in the execution mode below.
Technologies such as the mode that on sheet metal 2, forms first micro groove structure 100 and second micro groove structure 200 can be etching, bores quarter, photoetching, electronics quarter, ion quarter; Wherein be etched to selection process; Its key step is after designing suitable micro groove structure; Through etching machines, utilize the chemical reaction of solvent and metal to get rid of the sheet metal 2 that the paillon foil of presetting micro groove structure partly can obtain being formed with above-mentioned first micro groove structure 100 and second micro groove structure 200 then.The material of above-mentioned tinsel can be metals such as copper, silver.
The present invention also comprises the medium that is used to place said feeder line and said sheet metal, and medium can be air, pottery, epoxy resin base plate or ptfe substrate.
The present invention is if adopt first micro groove structure and second micro groove structure of symmetry on sheet metal 2; Promptly first micro groove structure is identical with the resonance frequency of second micro groove structure; After the two intercouples, will cause antenna Q value to increase, corresponding bandwidth BW diminishes, and is unfavorable for the realization of multimode resonance.And if adopt asymmetrical at least first micro groove structure and second micro groove structure; Because the two response capacitance that electromagnetic wave produced and inductance value can be different; Thereby produce a plurality of different resonance points; And these a plurality of different resonance points are difficult for offsetting, and help the multimodeization that realizes that antenna is abundant.
The version of first micro groove structure 100 of the present invention and second micro groove structure 200 can be the same, also can be different.And the asymmetric degree of first micro groove structure 100 and second micro groove structure 200 can be regulated as required.Thereby realize abundant adjustable multimode resonance.And as required, the present invention also can be provided with on the same sheet metal number more than two micro groove structure so that antenna has the different resonance band more than three.
Below discuss in detail the asymmetric micro groove structure that forms on three kinds of sheet metals 2 of the present invention.
As shown in Figure 2; Fig. 2 is the front view of first preferred embodiments of the present invention, and among Fig. 2, first micro groove structure 100 and second micro groove structure 200 are unsymmetric structure; Wherein, First micro groove structure 100 and second micro groove structure 200 link together, because the difference of pattern causes the asymmetric of its structure, make the regional separately resonance frequency of win micro groove structure 100 and second micro groove structure 200 different.Derived structure with complementary helix structure shown in Fig. 5 b and complementary helix structure in this execution mode is the example explanation, and the two interconnects.
As shown in Figure 3; Fig. 3 is the front view of second preferred embodiments of the present invention, and among Fig. 3, first micro groove structure 100 and second micro groove structure 200 are the different unsymmetric structure of pattern; Wherein, First micro groove structure 100 and second micro groove structure 200 are separately independently, because the difference of pattern causes the asymmetric of its structure, make the regional separately resonance frequency of win micro groove structure 100 and second micro groove structure 200 different.First micro groove structure 100 is the example explanation with the structure of opening helical ring shown in Fig. 5 c in this execution mode, and second micro groove structure 200 is the example explanation with complementary helix structure shown in Fig. 5 b.
As shown in Figure 4, be the front view of the 3rd preferred embodiments of the present invention, among Fig. 4; First micro groove structure 100 and second micro groove structure 200 are unsymmetric structure; Wherein, first micro groove structure 100 and second micro groove structure 200 are separately independently, and its pattern is identical; But the difference of its size causes the asymmetric of its structure, and the resonance frequency in zone is different separately to make win micro groove structure 100 and second micro groove structure 200.In this execution mode, first micro groove structure 100 and second micro groove structure 200 are the example explanation with the complementary helix structure shown in Fig. 5 c all.
The present invention also provides a kind of multiple-input and multiple-output (MIMO) antenna that comprises a plurality of above-mentioned asymmetrical antennas.Each feeder line of each asymmetrical antenna all inserts a transmitter/receiver separately in this MIMO antenna, and all transmitter/receivers insert baseband signal processor.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. asymmetrical antenna; Comprise feeder line and sheet metal; Said feeder line is characterized in that: engraved asymmetrical first micro groove structure and second micro groove structure on the said sheet metal at least, made said antenna have two different resonance band through the said sheet metal of coupled modes feed-in at least.
2. asymmetrical antenna as claimed in claim 1 is characterized in that: said first micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
3. asymmetrical antenna as claimed in claim 1 is characterized in that: said second micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
4. will remove 1 described asymmetrical antenna like right, it is characterized in that: said antenna also comprises the medium that is used to place said feeder line and said sheet metal.
5. asymmetrical antenna as claimed in claim 4 is characterized in that: said medium is air, pottery, epoxy resin base plate or ptfe substrate.
6. like claim 1 or 2 or 3 described asymmetrical antennas, it is characterized in that: said first micro groove structure and said second micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved hollow out on said sheet metal.
7. asymmetrical antenna as claimed in claim 1 is characterized in that: said feeder line does not contact with said sheet metal, through the said sheet metal of capacitive coupled modes feed-in.
8. asymmetrical antenna as claimed in claim 1 is characterized in that: make said feeder line through the said sheet metal of inductive coupled mode feed-in but said feeder line connects said sheet metal through short circuit point.
9. a MIMO antenna is characterized in that: comprise the described asymmetrical antenna of a plurality of claims 1.
10. MIMO antenna as claimed in claim 9 is characterized in that: each feeder line of a plurality of said asymmetrical antennas all connects a reception/transmitter, and whole reception/transmitters are connected in baseband signal processor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145196.XA CN102800944B (en) | 2011-05-31 | 2011-05-31 | A kind of asymmetrical antenna and there is the MIMO antenna of this asymmetrical antenna |
| TW100135539A TWI501468B (en) | 2011-03-14 | 2011-09-30 | Asymmetric antenna and a mimo antenna |
| PCT/CN2011/080436 WO2012122793A1 (en) | 2011-03-14 | 2011-09-30 | Asymmetric antenna and mimo antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145196.XA CN102800944B (en) | 2011-05-31 | 2011-05-31 | A kind of asymmetrical antenna and there is the MIMO antenna of this asymmetrical antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102800944A true CN102800944A (en) | 2012-11-28 |
| CN102800944B CN102800944B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110145196.XA Active CN102800944B (en) | 2011-03-14 | 2011-05-31 | A kind of asymmetrical antenna and there is the MIMO antenna of this asymmetrical antenna |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1304765A2 (en) * | 2001-10-22 | 2003-04-23 | Filtronic LK Oy | Internal multiband antenna |
| US20060244664A1 (en) * | 2005-04-27 | 2006-11-02 | Samsung Electronics Co., Ltd. | Built-in type antenna apparatus for portable terminal |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN202127090U (en) * | 2011-05-31 | 2012-01-25 | 深圳光启高等理工研究院 | Asymmetrical antenna and MIMO (multiple-input multiple-output) antenna with same |
-
2011
- 2011-05-31 CN CN201110145196.XA patent/CN102800944B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1304765A2 (en) * | 2001-10-22 | 2003-04-23 | Filtronic LK Oy | Internal multiband antenna |
| US20060244664A1 (en) * | 2005-04-27 | 2006-11-02 | Samsung Electronics Co., Ltd. | Built-in type antenna apparatus for portable terminal |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN202127090U (en) * | 2011-05-31 | 2012-01-25 | 深圳光启高等理工研究院 | Asymmetrical antenna and MIMO (multiple-input multiple-output) antenna with same |
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| CN102800944B (en) | 2016-05-11 |
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