CN102810735A - Antenna and MIMO (multiple input multiple output) antenna with same - Google Patents
Antenna and MIMO (multiple input multiple output) antenna with same Download PDFInfo
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- CN102810735A CN102810735A CN2011101451851A CN201110145185A CN102810735A CN 102810735 A CN102810735 A CN 102810735A CN 2011101451851 A CN2011101451851 A CN 2011101451851A CN 201110145185 A CN201110145185 A CN 201110145185A CN 102810735 A CN102810735 A CN 102810735A
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Abstract
The invention relates to an antenna and an MIMO (multiple input multiple output) antenna with the same. The antenna comprises a first dielectric substrate with an attached microgroove structure, a feeder connected with the first dielectric substrate, and a second dielectric substrate covering the first dielectric substrate. When electromagnetic waves are received or transmitted by the antenna, distributed capacitance of the whole antenna is increased by the second dielectric substrate. According to a formula, operation frequency of the antenna can be reduced by increasing the distributed capacitance, so that the antenna can still well operate under low frequency without changing length of the feeder, and requirements of the antenna for small size, low operation frequency and multimode bandwidth are met.
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
Antenna in the existing communication system is mainly dipole antenna and PIFA antenna, and important indicators such as this type of antenna size, bandwidth, gain have received the restriction (gain margin under the fixed dimension, bandwidth limit etc.) of basic physical principle.The basic physical 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.Therefore the antenna usage space is little, operating frequency is low when in design, running into, when being operated in the multimode problem, it just seems unable to do what one wishes.
For addressing the above problem, prior art solutions generally is through the radiation requirement that terminated line is realized multimode being set in that antenna is outside extra.After in antenna-feedback system, adding matching network, be the job requirement that can realize low frequency, multimode on the function, but because very large part energy is lost on the matching network, 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 further to shorten antenna size and at the low good antenna of working frequency range work.
The present invention solves the technical scheme that its technical problem adopts, and proposes a kind of antenna, and it comprises: first medium substrate and be covered in second medium substrate on this first medium substrate; The feeder line that this first medium substrate, one side surface is provided with sheet metal and is provided with around this sheet metal, this feeder line is with this sheet metal of coupled modes feed-in, and hollow out has micro groove structure on this sheet metal.
This micro groove structure is 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 said structure derive, compound or a micro groove structure that the group battle array obtains.
This first medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
This second medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
But be provided with the short circuit point between this feeder line and this sheet metal, but should made this feeder line with inductive coupled this sheet metal of mode feed-in with this sheet metal by this feeder line of short circuit point electrical connection.
This feeder line is around this sheet metal setting and do not contact with this sheet metal and make this feeder line with this sheet metal of capacitive coupled modes feed-in.
This micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved hollow out on this sheet metal.
This sheet metal material is copper or silver.
The present invention is through covering second medium substrate on first medium substrate, the formation coupling capacitance makes and need not when antenna is operated in low frequency to increase feeder line length between two medium substrates, has reduced antenna volume.
Simultaneously, the present invention also provides a kind of MIMO antenna, and it comprises the described antenna of a plurality of claims 1.
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 the structural representation of antenna 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, designs a kind of antenna.Thereby it is attached to the artificial micro-structural of artificial metal's micro-structural on first medium substrate and utilizes the highly dispersed characteristic of the artificial micro-structural of artificial metal's micro-structural to make antenna have design that abundant radiation characteristic saved impedance matching network to realize antenna miniaturization; In addition, the present invention also adds second medium substrate in antenna structure, and second medium substrate is covered in and makes the distributed capacitance of antenna increase on first medium substrate.
As shown in Figure 1, Fig. 1 is the structural representation of antenna of the present invention.Be clearer expression structure of the present invention, Fig. 1 adopts the perspective view technique of painting.Among Fig. 1, antenna comprises first medium substrate 1 and is covered in second medium substrate 2 on this first medium substrate 1; The feeder line 11 that this first medium substrate, one side surface is provided with sheet metal 10 and is provided with around this sheet metal 10, this feeder line 11 is with this sheet metal 10 of coupled modes feed-in, and 10 hollow outs have micro groove structure 101 on this sheet metal.
Thereby sheet metal 10 and the micro groove structure 101 that on sheet metal 10, forms make sheet metal 10 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.Fig. 2 a has provided a series of micro groove structure topology patterns of realizing the object of the invention to Fig. 5.When the design kind that should know micro groove structure have infinite multiple, be not limited to Fig. 2 a to Fig. 5 for example, but basically all be resonance structure, the design of micro groove structure here can be according to the topological property of sheet metal, as derives and make amendment with compound.Fig. 2 a is complementary split ring resonator structure; Fig. 2 b is complementary helix structure; Fig. 2 c is the opening helical structure; Fig. 2 d is two opening helical ring structures; Fig. 2 e is complementary bending structure.Micro groove structure can also be the deriving of above-mentioned Fig. 2 a to Fig. 2 e structure, compound or group battle array.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.Illustrate with the opening helical ring structure shown in Fig. 2 c in the present embodiment.
But thereby feeder line 11 is electrically connected with sheet metal 10 formation inductive coupled so that it is carried out feed through short circuit point 50 with sheet metal 10.But the position of short circuit point 50 can be the optional position.The mode of 10 pairs of sheet metal 10 feeds of feeder line can also be a capacitive coupling feeding classification in addition, and promptly feeder line 10 is provided with and does not contact with sheet metal 10 around sheet metal 10.The mode that second medium substrate 2 is covered in first medium substrate 1 is various, can adopt modes such as attaching, absorption or compacting.
Can know that by the antenna radio frequency principle electrical length is to describe the physical quantity of the frequent degree of electromagnetic wave wave form varies, electrical length=physical length/wavelength.When the same day, line worked in low frequency, the electromagnetic wavelength that low frequency is corresponding was longer, kept under the constant prerequisite of electrical length at needs, and increasing physical length is exactly necessary selection.Yet increase the requirement that physical length can not satisfy antenna miniaturization.The present invention covers on first medium substrate 1 and is provided with second medium substrate 2, and when antenna is receiving or during launching electromagnetic wave, thereby electromagnetic wave all need could or be received by emission through second medium substrate 2 and makes the distributed capacitance increase of antenna integral body.
can know according to formula, increases distributed capacitance and can effectively reduce operating frequency of antenna and make that under the prerequisite that does not increase physical length, just can to keep electrical length constant.Thereby and can change the whole distributed capacitance of antenna and all can reach the purpose that under the prerequisite that does not change physical length, changes electrical length to different frequencies through changing second medium substrate 2 and the material of first medium substrate 1, so just can in minimum space, design the radio-frequency antenna that is operated under the very low operation frequency.
The material of first medium substrate of the present invention can be selected pottery, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material for use; Wherein macromolecular material preferably polytetrafluoroethylene, F4B or FR-4.The material of second medium substrate of the present invention can be selected pottery, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material for use; Wherein macromolecular material preferably polytetrafluoroethylene, F4B or FR-4.
In the present invention, about the processing and manufacturing of antenna,, can adopt various manufactures as long as satisfy design principle of the present invention.Prevailing method is to use the manufacturing approach of all kinds of printed circuit board (PCB)s (PCB), metallized through hole, and the PCB of double-sided copper-clad makes all can satisfy processing request of the present invention.Remove this processing mode; Can also introduce other manufacturing process according to the needs of reality; (RFID is the abbreviation of Radio FrequencyIdentification such as RFID; Be REID, be commonly called as electronic tag) but in the processing mode that makes up of processing mode and iron plate and the PCB of flexible PCB processing, iron plate antenna of employed conductive silver paste printing ink processing mode, all kinds of deformation devices.Wherein, iron plate and PCB combination processing mode is meant that the accurate processing that utilizes PCB accomplishes the processing of chip micro-structural part, accomplishes other slave part with iron plate.
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. an antenna is characterized in that: comprise first medium substrate and be covered in second medium substrate on this first medium substrate; The feeder line that this first medium substrate, one side surface is provided with sheet metal and is provided with around this sheet metal, this feeder line is with this sheet metal of coupled modes feed-in, and hollow out has micro groove structure on this sheet metal.
2. antenna as claimed in claim 1; It is characterized in that: this micro groove structure is 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 said structure 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 first medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
4. antenna as claimed in claim 1 is characterized in that: this second medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
5. antenna as claimed in claim 1 is characterized in that: but be provided with the short circuit point between this feeder line and this sheet metal, but should make this feeder line with inductive coupled this sheet metal of mode feed-in with this sheet metal by this feeder line of short circuit point electrical connection.
6. antenna as claimed in claim 1 is characterized in that: this feeder line is around this sheet metal setting and do not contact with this sheet metal and make this feeder line with this sheet metal of capacitive coupled modes feed-in.
7. according to claim 1 or claim 2 antenna is characterized in that: this micro groove structure through etching, bore quarter, photoetching, electronics is carved or ion is carved hollow out on this sheet metal.
8. antenna as claimed in claim 1 is characterized in that: this sheet metal material is copper or silver.
9. a MIMO antenna is characterized in that: comprise 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 |
|---|---|---|---|
| CN2011101451851A CN102810735A (en) | 2011-05-31 | 2011-05-31 | Antenna and MIMO (multiple input multiple output) antenna with same |
| PCT/CN2011/080447 WO2012129901A1 (en) | 2011-04-01 | 2011-09-30 | Antenna and mimo antenna having the antenna |
| TW100135512A TWI517491B (en) | 2011-04-01 | 2011-09-30 | An antenna and mimo antenna with the antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101451851A CN102810735A (en) | 2011-05-31 | 2011-05-31 | Antenna and MIMO (multiple input multiple output) antenna with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102810735A true CN102810735A (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101451851A Pending CN102810735A (en) | 2011-04-01 | 2011-05-31 | Antenna and MIMO (multiple input multiple output) antenna with same |
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| CN (1) | CN102810735A (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 |
| US7411554B2 (en) * | 2006-07-20 | 2008-08-12 | Samsung Electronics Co., Ltd. | MIMO antenna operable in multiband |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN201845871U (en) * | 2010-10-29 | 2011-05-25 | 华南理工大学 | Two-unit-broadband MIMO (multiple input multiple output) antenna array |
-
2011
- 2011-05-31 CN CN2011101451851A patent/CN102810735A/en active Pending
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 |
| US7411554B2 (en) * | 2006-07-20 | 2008-08-12 | Samsung Electronics Co., Ltd. | MIMO antenna operable in multiband |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN201845871U (en) * | 2010-10-29 | 2011-05-25 | 华南理工大学 | Two-unit-broadband MIMO (multiple input multiple output) antenna array |
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Owner name: SHENZHEN GUANGQI INTELLIGENT PHOTONICS TECHNOLOGY Free format text: FORMER OWNER: SHENZHEN KUANG-CHI INNOVATION TECHNOLOGY CO., LTD. Effective date: 20150716 |
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Effective date of registration: 20150716 Address after: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Applicant after: Shenzhen Guang Qi intelligent photonic Technology Co., Ltd. Address before: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Applicant before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |
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Application publication date: 20121205 |