CN102800938A - Antenna and multiple input multiple output (MIMO) antenna with same - Google Patents
Antenna and multiple input multiple output (MIMO) antenna with same Download PDFInfo
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- CN102800938A CN102800938A CN2011101449955A CN201110144995A CN102800938A CN 102800938 A CN102800938 A CN 102800938A CN 2011101449955 A CN2011101449955 A CN 2011101449955A CN 201110144995 A CN201110144995 A CN 201110144995A CN 102800938 A CN102800938 A CN 102800938A
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- 239000002184 metal Substances 0.000 claims abstract 20
- 230000008878 coupling Effects 0.000 claims abstract 2
- 238000010168 coupling process Methods 0.000 claims abstract 2
- 238000005859 coupling reaction Methods 0.000 claims abstract 2
- 230000000295 complement effect Effects 0.000 claims 3
- 239000000463 material Substances 0.000 claims 3
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000005530 etching Methods 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000001259 photo etching Methods 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
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Abstract
The invention relates to an antenna, which comprises a feeder line, a first metal sheet and a second metal sheet opposite to the first metal sheet, wherein the feeder line feeds a signal in the first metal sheet in a coupling way; the second metal sheet is electrically connected with the feeder line; and a micro-channel structure is formed on the first metal sheet. A complex impedance matching network is eliminated; and the antenna has the advantages of small size and low cost, and is easy to machine. Furthermore, the structure of the feeder line can be simplified when the antenna works in a low working frequency range, the loss of the feeder line can be reduced, and the performance of the antenna in the low working frequency range can be improved.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of antenna and have the MIMO antenna of this antenna.
Background technology
Along with the high development of semiconductor technology, current electronic system integrated level has been proposed increasingly high requirement, miniaturization of devices becomes the technical problem that whole industry is paid special attention to.Yet, be different from the development that the IC chip is followed " Moore's Law ", as other important composition---the radio-frequency module of electronic system, but be faced with the highly difficult technological challenge of device miniaturization.Radio-frequency module has mainly comprised main devices such as mixing, power amplifier, filtering, radio signal transmission, matching network and antenna.Wherein, antenna is as the radiating element and the receiving device of final radiofrequency signal, and its operating characteristic will directly influence the service behaviour of whole electronic system.Yet important indicators such as the size of antenna, bandwidth, gain have but received the restriction (gain margin under the fixed dimension, bandwidth limit etc.) of basic physical principle.The basic principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and because the complexity of the electromagnetic field analysis of radio-frequency devices, approaching these limiting values all becomes huge technological challenge.
The radiation operating frequency of traditional antenna directly and the size positive correlation of antenna, the area positive correlation of bandwidth and antenna makes the design of antenna need the physical length of half-wavelength usually.This makes the traditional antenna technology under the size-constrained prerequisite of portable terminal, be difficult to carry out.
In addition, more in the complicated electronic system, antenna needs multimode operation, just need design at the impedance matching network outside the feed antenna forehead at some.But the increase that impedance matching network is extra the feeder line design of electronic system, increased radio system area simultaneously matching network also introduced many energy losses, be difficult to satisfy the requirement of system design of Modern Communication System low-power consumption.
Summary of the invention
Technical problem to be solved by this invention is; Above-mentioned deficiency to prior art; Propose a kind of framework of breaking through the traditional antenna design, save the somewhat complex design of impedance matching network, guarantee its miniaturization and make it still keep the antenna of superperformance at low working frequency range.
The technical solution adopted for the present invention to solve the technical problems is to propose a kind of antenna, second sheet metal that it comprises feeder line, first sheet metal, is oppositely arranged with this first sheet metal; This feeder line is through this first sheet metal of coupled modes feed-in, and this second sheet metal is electrically connected with this feeder line; Be formed with micro groove structure on this first sheet metal.
This micro groove structure comprise complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
This feeder line is through this first sheet metal of capacitive coupling feed-in.
But be provided with the short circuit point between this feeder line and this first sheet metal, but should made this feeder line with this first sheet metal of inductive coupled mode feed-in with this first sheet metal by this feeder line of short circuit point electrical connection.
This antenna also comprises the medium that is filled between this first sheet metal and this second sheet metal.
This medium substrate is formed with plated-through hole, through this plated-through hole this feeder line and this second sheet metal is electrically connected.
This micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved and is formed on this first sheet metal.
This medium is processed by ceramic material, macromolecular material, ferroelectric material or ferrite material.
Antenna of the present invention is broken through the design framework of traditional antenna, utilizes the special electromagnetic Response Design of ultra material to go out the New-type radio-frequency antenna that radiation has profuse dispersion characteristics, can form multiple radiation mode.The present invention can remove loaded down with trivial details impedance matching network from, has the advantage that size is little, processing is simple, with low cost.Further; The present invention also includes can be to another sheet metal of ultra material micro groove structure coupling feed; There is medium between the two metal sheets;, make antenna can be operated in low-frequency range because thereby the corresponding different electromagnetic parameter of different media changes capacitance and final operating frequency of regulating radio-frequency antenna between the two metal sheets.And, can make antenna when hanging down working frequency range, simplify the performance of the loss of the structure of feeder line, minimizing feeder line, the low working frequency range of raising antenna because this another sheet metal is electrically connected with feeder line.
The present invention also provides a kind of MIMO antenna in addition, and this MIMO antenna comprises a plurality of above-mentioned antennas.
Each feeder line in this MIMO antenna connects a reception/transmitter, and all receptions/transmitter connects baseband signal processor.
According to MIMO antenna of the present invention, except the advantage that possesses above-mentioned antenna itself, also have very high isolation, and the antijamming capability between a plurality of antenna is strong.
Description of drawings
Fig. 1 is a kind of antenna structure view of the present invention;
Fig. 2 a is the sketch map of complementary split ring resonator structure;
Fig. 2 b is depicted as the sketch map of complementary helix structure;
Fig. 2 c is depicted as the sketch map of opening helical ring structure;
Fig. 2 d is depicted as the sketch map of two opening helical ring structures;
Fig. 2 e is depicted as the sketch map of complementary folding line structure;
Fig. 3 a is the sketch map of deriving of complementary its geometry of split ring resonator structure shown in Fig. 2 a;
Fig. 3 b is the sketch map of deriving of complementary its expansion of split ring resonator structure shown in Fig. 2 a;
Fig. 4 a is the structural representation behind the complementary split ring resonator structure shown in three Fig. 2 a compound;
Fig. 4 b is the compound sketch map that the complementary split ring resonator structure shown in two Fig. 2 a and Fig. 5 b are depicted as complementary helix structure;
Fig. 5 is the structural representation after the complementary split ring resonator structural group battle array shown in four Fig. 2 a.
Embodiment
Ultra material be by the artificial micro-structural with certain pattern form according to the ad hoc fashion periodic arrangement on base material and constitute.Thereby the pattern form that artificial micro-structural is different makes ultra material have different dielectric constants with arrangement mode and makes that with different magnetic permeabilitys ultra material has different electromagnetic responses.Wherein, When this artificial micro-structural is in resonance band; This artificial micro-structural will show the dispersion characteristics of height, and the dispersion characteristics of so-called height are meant the impedance of this artificial micro-structural, hold perception, equivalent dielectric constant and magnetic permeability be along with violent variation can take place frequency.
The present invention utilizes the above-mentioned principle of ultra material; Design a kind of antenna; It utilizes the highly dispersed characteristic of artificial micro-structural that micro groove structure is formed on first sheet metal, has saved the miniaturization that the design of impedance matching network realizes antenna thereby the feeder line coupling of this first sheet metal and radio-frequency antenna makes antenna have abundant radiation characteristic; In addition; In antenna structure, also introduce second sheet metal relative with first sheet metal; This second sheet metal is electrically connected with feeder line and produces the capacitive coupling with first sheet metal and makes that the swept area of feeder line obtains by second sheet metal increasing, and has reduced the loss of feeder line; Simultaneously owing to have medium in the middle of first sheet metal and second sheet metal, cause the capacitance change between the two metal sheets according to the difference of dielectric material electromagnetic property, make the operating frequency of antenna also produce change.
As shown in Figure 1, Fig. 1 is the structural representation of antenna of the present invention.Among Fig. 1, antenna comprises feeder line 10, first sheet metal 20, second sheet metal 30, is filled in the medium 1 between first sheet metal 20 and second sheet metal 30; Feeder line 10 is electrically connected with feeder line 10 through capacitive coupling feed-in first sheet metal 20, the second sheet metals 30 with this first sheet metal 20; Be formed with micro groove structure 201 on first sheet metal 20.Thereby first sheet metal 20 and the micro groove structure 201 that on first sheet metal 20, forms make the sheet metal 20 of winning constitute an effective dielectric constant realizes changing the aerial radiation characteristic according to the electromagnetic material of Lorentz lorentz's material resonances model chromatic dispersion purpose.
Micro groove structure 201 of the present invention can be the complementary helix structure shown in the complementary split ring resonator structure shown in Fig. 2 a, Fig. 2 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 2 c, Fig. 2 d, the complementary folding line structure shown in Fig. 2 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. 2 a to Fig. 2 e, is offered new groove to form new micro groove structure; Complementary split ring resonator structure with shown in Fig. 2 a is an example, and Fig. 3 a is its geometry sketch map of deriving, and Fig. 3 b is its geometry sketch map of deriving.Compound being meant here, a plurality of stacks of the micro groove structure of Fig. 2 a to Fig. 2 e form a new micro groove structure, shown in Fig. 4 a, are the structural representation of the complementary split ring resonator structure shown in three Fig. 2 a after compound; Shown in Fig. 2 b, be that the complementary split ring resonator structure shown in two Fig. 2 a and Fig. 2 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. 2 a to Fig. 2 e, and is as shown in Figure 5, is the structural representation after a plurality of complementary split ring resonator structural group battle arrays shown in Fig. 2 a.Below be that example is set forth the present invention all with the opening helical ring structure shown in Fig. 2 c.
The manufacturing process that on first sheet metal 20, forms micro groove structure 201 has multiple; For example etching, bore carve at quarter, photoetching, electronics, ion quarter etc.; Wherein etching is more excellent manufacturing process, and its step is after designing the topological pattern of suitable micro groove structure, through etching machines; Utilize the chemical reaction of solvent and metal to get rid of the metal section and part of presetting the micro groove structure pattern on first sheet metal, this first sheet metal has promptly formed described ultra material.The material of above-mentioned first sheet metal can be any metals such as copper, silver.
Please continue to consult Fig. 1.Though the setting of the micro groove structure 201 that forms on first sheet metal 20 and this first sheet metal 20 has solved problems such as impedance matching of the prior art is complicated, impedance loss is big, antenna size is limited; But when antenna need be operated in low frequency; The wavelength that the electromagnetic wave of low-frequency range is corresponding is longer; According to the Antenna Design principle, the electric radiation length of feeder will increase.Yet the setting of first sheet metal 20 can not effectively address this problem; Conventional solution is that feeder 10 is provided with to increase the coupling feed of the micro groove structure 201 that forms on 10 pairs first sheet metals 20 of feeder line around first sheet metal more than 20 circles; But this type of is provided with and must makes that feeder line length is long, thereby the feeder loss increase makes antenna performance descend.
Among Fig. 1, simultaneously having additional second sheet metal 30 with first sheet metal, 20 relative media.Feeder line 10 is electrically connected with second sheet metal 30.The mode that is electrically connected also can be electrically connected feeder line 10 through other conventional electric connection mode for through on medium, forming plated-through hole 40 certainly with second sheet metal 30.
Second sheet metal 30 and the coupling of first sheet metal, 20 capacitives are to the micro groove structure 201 coupling feeds that form on first sheet metal 20.The micro groove structure 201 coupling feeds that form on 30 pairs first sheet metals 20 of second sheet metal have effectively reduced the demand of the micro groove structure 201 coupling feeds that form on 10 pairs first sheet metals 20 of feeder line.Therefore need not to increase feeder line 10 length, and the adjusting of second sheet metal, 30 areas is simple, only need adjust second sheet metal, 30 areas to the different working frequency range and get final product.And owing to have media in the middle of first sheet metal 20 and second sheet metal 30, will cause the capacitance between the two metal sheets to change, make the also change thereupon of operating frequency of antenna according to the difference of dielectric material electromagnetic property.
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. antenna is characterized in that: second sheet metal that comprises feeder line, first sheet metal, is oppositely arranged with this first sheet metal; This feeder line is through this first sheet metal of coupled modes feed-in, and this second sheet metal is electrically connected with this feeder line; Be formed with micro groove structure on this first sheet metal.
2. antenna as claimed in claim 1 is characterized in that: this micro groove structure comprise complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
3. antenna as claimed in claim 1 is characterized in that: this feeder line is through this first sheet metal of capacitive coupling feed-in.
4. antenna as claimed in claim 1 is characterized in that: but be provided with the short circuit point between this feeder line and this first sheet metal, but should make this feeder line with this first sheet metal of inductive coupled mode feed-in with this first sheet metal by this feeder line of short circuit point electrical connection.
5. antenna as claimed in claim 1 is characterized in that: this micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved and is formed on this first sheet metal.
6. antenna as claimed in claim 1 is characterized in that: this antenna also comprises the medium that is filled between this first sheet metal and this second sheet metal.
7. antenna as claimed in claim 6 is characterized in that: this medium is processed by ceramic material, macromolecular material, ferroelectric material or ferrite material.
8. antenna as claimed in claim 6 is characterized in that: this medium is formed with plated-through hole, through this plated-through hole this feeder line and this second sheet metal is electrically connected.
9. MIMO antenna, it is characterized in that: this MIMO antenna comprises the described antenna of a plurality of claims 1.
10. MIMO antenna as claimed in claim 9 is characterized in that: each feeder line in this MIMO antenna connects a reception/transmitter, and all receptions/transmitter connects baseband signal processor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144995.5A CN102800938B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
| TW100135527A TWI502806B (en) | 2011-03-14 | 2011-09-30 | Metamaterial radio frequency antenna and mimo antenna |
| PCT/CN2011/080429 WO2012122792A1 (en) | 2011-03-14 | 2011-09-30 | Metamaterial radio frequency antenna and mimo antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144995.5A CN102800938B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102800938A true CN102800938A (en) | 2012-11-28 |
| CN102800938B CN102800938B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110144995.5A Active CN102800938B (en) | 2011-03-14 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119058A (en) * | 2015-07-29 | 2015-12-02 | 厦门大学 | Rotary left-handed material unit structure with multi-resonant control structure |
| CN108682939A (en) * | 2018-04-19 | 2018-10-19 | 深圳三星通信技术研究有限公司 | A kind of filter antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1778014A (en) * | 2003-06-04 | 2006-05-24 | 株式会社村田制作所 | Frequency-variable antenna and communication device having the same |
| CN101242026A (en) * | 2007-02-06 | 2008-08-13 | 太盟光电科技股份有限公司 | Circularly Polarized Panel Antenna Structure |
| CN201345415Y (en) * | 2008-10-16 | 2009-11-11 | 张信珉 | Chip type antenna |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| 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 |
| CN102683804A (en) * | 2011-03-14 | 2012-09-19 | 深圳光启高等理工研究院 | Metamaterial radio-frequency antenna |
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2011
- 2011-05-31 CN CN201110144995.5A patent/CN102800938B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778014A (en) * | 2003-06-04 | 2006-05-24 | 株式会社村田制作所 | Frequency-variable antenna and communication device having the same |
| CN101242026A (en) * | 2007-02-06 | 2008-08-13 | 太盟光电科技股份有限公司 | Circularly Polarized Panel Antenna Structure |
| CN201345415Y (en) * | 2008-10-16 | 2009-11-11 | 张信珉 | Chip type antenna |
| 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 |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN102683804A (en) * | 2011-03-14 | 2012-09-19 | 深圳光启高等理工研究院 | Metamaterial radio-frequency antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119058A (en) * | 2015-07-29 | 2015-12-02 | 厦门大学 | Rotary left-handed material unit structure with multi-resonant control structure |
| CN108682939A (en) * | 2018-04-19 | 2018-10-19 | 深圳三星通信技术研究有限公司 | A kind of filter antenna |
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| Publication number | Publication date |
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| CN102800938B (en) | 2016-08-03 |
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