CN102683806A - Small foldable metamaterial radio-frequency antenna - Google Patents
Small foldable metamaterial radio-frequency antenna Download PDFInfo
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- CN102683806A CN102683806A CN2011100621978A CN201110062197A CN102683806A CN 102683806 A CN102683806 A CN 102683806A CN 2011100621978 A CN2011100621978 A CN 2011100621978A CN 201110062197 A CN201110062197 A CN 201110062197A CN 102683806 A CN102683806 A CN 102683806A
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- sheet metal
- antenna
- feeder line
- metal
- metal sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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Abstract
The invention relates to a small foldable metamaterial radio-frequency antenna which comprises a first feeder line, a second feeder line, a dielectric material, a first metal sheet and a second metal sheet, wherein the first feeder line is electrically connected with the second feeder line, the first metal sheet is electrically connected with the second metal sheet, and the first metal sheet and the second metal sheet are respectively arranged on the two surfaces of the dielectric material, and metal microstructures are engraved on the first metal sheet and the second metal sheet. The metal microstructures of a positive surface and a negative surface are connected through a metalized through hole or work in a capacitor coupling manner. The small foldable metamaterial radio-frequency antenna fully uses the space area of an antenna, and the antenna can work under lower working frequency; and the antennas of the small folding metamaterial radio-frequency antennas class meets requirements on antenna miniaturization, low working frequency and broadband multimode.
Description
Technical field
The present invention relates to a kind of radio-frequency antenna, more particularly, relate to a kind of folding radio-frequency 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.
Simultaneously, complicated along with contemporary electronic systems, the demand of multimode service becomes more and more important in systems such as radio communication, wireless access, satellite communication, radio data network.And the demand of multimode service has further increased the complexity of miniature antenna multimode design.Remove the technological challenge of miniaturization, the multimode impedance matching of antenna also becomes the bottleneck of antenna technology.On the other hand, the high speed development of multi-input multi-output system (MIMO) in radio communication, wireless data service field further required the miniaturization of antenna size harshly and guaranteed good isolation degree, radiance and antijamming capability simultaneously.Yet traditional terminal communication antenna mainly designs based on the radiation theory of electric monopole or dipole, such as the most frequently used planar inverted-F antenna (PIFA).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.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 low-power consumption.Therefore, miniaturization, multimodal new antenna technology become an important technology bottleneck of contemporary electronics integrated system.
Summary of the invention
The technical problem that the present invention will solve is, is controlled by the defective of the physics limitation of spatial area to prior art antenna when the low frequency operation, and a kind of folding ultra material radio frequency miniature antenna that makes antenna when low frequency operation, guarantee its miniaturization is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of folding ultra material radio frequency miniature antenna; Said folding ultra material radio frequency miniature antenna; Comprise first feeder line, second feeder line, dielectric material, first sheet metal and second sheet metal; But first feeder line is electrically connected through the first short circuit point with second feeder line; But first sheet metal is electrically connected through the second short circuit point with second sheet metal, and said first sheet metal and the second sheet metal branch are located at the two sides of dielectric material, have all engraved metal micro structure on said first sheet metal and second sheet metal.
Further, said dielectric material is air, pottery, epoxy resin base plate or ptfe substrate.
Further, the metal micro structure of engraving on the double-edged sheet metal of said dielectric material is a symmetrical structure.
Further, the metal micro structure of engraving on the double-edged sheet metal of said dielectric material equally also can be asymmetric structure.
Further, said metal micro structure comprises complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure and through the various metal micro structures of deriving and obtaining.
Further, said first feeder line is connected through plated-through hole with second feeder line.
Further; Said double-edged metal micro structure connects through the plated-through hole mode; The metal micro structure of engraving on the tow sides sheet metal in addition can also not connect, and the metal micro structure of engraving on the tow sides sheet metal carries out work through capacity coupled mode.
The folding ultra material radio frequency miniature antenna of embodiment of the present invention; Has following beneficial effect: the invention solves the physics limitation that traditional antenna design antenna when low frequency operation is controlled by spatial area; Make antenna when low frequency operation, satisfy the characteristics of miniaturization, for the Antenna Design of small size, low operating frequency, broadband multimode provides technical guarantee.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of a kind of radio frequency miniature antenna in the prior art;
Fig. 2 is the structural representation when folding radio-frequency antenna metal micro structure interconnects among the present invention;
Fig. 3 is the structural representation when folding radio-frequency antenna metal micro structure does not connect among the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further description:
Fig. 1 is a radio-frequency antenna structural representation of the prior art, comprises feeder line 101, sheet metal 102, has engraved metal micro structure 103 on the sheet metal.
As shown in Figure 2; In the present embodiment; Folding radio-frequency antenna comprises first feeder line 1, second feeder line 2, dielectric material 3, first sheet metal 4 and second sheet metal 5; First feeder line 1 is electrically connected with second feeder line 2, and first sheet metal 4 and second sheet metal 5 are electrically connected, wherein; First sheet metal 4 is in the one side of dielectric material 3; Second sheet metal 5 has all been engraved metal micro structure at the another side of above-mentioned dielectric material 3 on two sheet metals, and said metal micro structure can be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, the complementary folding line structure and through several kinds of structures in front are derived, compound, combination or group battle array obtain a metal micro structure.But above the concrete referenced patent of several kinds of micro-structurals number be the one Chinese patent application of CN201490337, the metal micro structure of wherein engraving on 5 two sheet metals of first sheet metal 4 and second sheet metal can be identical, also can be inequality.The metal micro structure of engraving on first sheet metal 4 and second sheet metal 5 is electrically connected through plated-through hole, and first feeder line 1 and second feeder line 2 are electrically connected through plated-through hole.Through and first sheet metal 4 and 5 two sheet metals of second sheet metal on carry out signal feed with capacity coupled mode between the metal micro structure engraved; Increased practical function area at the unit are internal antenna; Design among the present invention has been equivalent to increase the physical length of antenna; Physical length strengthens, and electrical length strengthens and makes antenna can in the same space scope, be operated in lower working frequency range.
The medium that is used to place sheet metal and feeder line among the present invention can be air, pottery, epoxy resin base plate or ptfe substrate; But about the short circuit point position of feeder line, but the short circuit point position of feeder line and metal micro structure can be positioned at the optional position on the metal micro structure.For the folding ultra material radio frequency miniature antenna among the present invention, but can carry out tuning through the topological micro-structural of feed-in coupled modes, sheet metal of adjustment feeder line and the short circuit point position of size, feeder line wire length and feeder line and metal micro structure.
Artificial electromagnetic material is a kind of equivalent special material that utilizes metal micro structure to carry out processing and manufacturing, and its performance directly depends on the metal micro structure of its sub-wavelength.In resonance band, artificial electromagnetic material embodies the dispersion characteristics of height usually, in other words, its impedance, holds perception, equivalent dielectric constant and magnetic permeability along with violent variation can take place frequency.Thereby can adopt pair the contact fundamental characteristics of medium of artificial electromagnetic material to transform with sheet metal, make sheet metal and contacted medium form a highly dispersed extraordinary electromagnetic material equivalently, thereby realize the new antenna that radiation characteristic is abundant.
The present invention utilizes the characteristic of artificial electromagnetic material; Be employed in the mode of engraving metal micro structure on the sheet metal; Make sheet metal reach and the common electromagnetic material of forming an effective dielectric constant according to the chromatic dispersion of Lorentz lorentz's material resonances model of the contacted medium of sheet metal, realize the purpose of the radiation characteristic of change antenna.
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 Frequency Identification 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.
As shown in Figure 3; The metal micro structure of engraving on folding radio-frequency antenna tow sides sheet metal 11 and the sheet metal 12 among the present invention is not connected; But feeder line 21 equally still is electrically connected with plated-through hole with feeder line 22; The metal micro structure of in the folding radio-frequency antenna of this pattern, engraving on sheet metal 11 and the sheet metal 12 carries out work through capacity coupled mode, can realize the resonance of tow sides metal micro structure through the thickness that changes dielectric material.This kind design has increased antenna actual physics length equally, so just can in minimum space, design the radio-frequency antenna that is operated under the very low operation frequency.Solve the physics limitation of traditional antenna antenna controlled space area when low frequency operation.
Above in addition two kinds of designs have increased the structure type of antenna, make antenna be more prone to produce multimode resonance.
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 (6)
1. folding ultra material radio frequency miniature antenna; It is characterized in that; Said folding ultra material radio frequency miniature antenna comprises first feeder line, second feeder line, dielectric material, first sheet metal and second sheet metal, and first feeder line is electrically connected with second feeder line, and first sheet metal is electrically connected with second sheet metal; Said first sheet metal and the second sheet metal branch are located at the two sides of dielectric material, have all engraved metal micro structure on said first sheet metal and second sheet metal.
2. folding ultra material radio frequency miniature antenna according to claim 1 is characterized in that said dielectric material is air, pottery, epoxy resin base plate or ptfe substrate.
3. folding ultra material radio frequency miniature antenna according to claim 1 is characterized in that, the metal micro structure symmetry or the asymmetric setting of engraving on said first sheet metal and second sheet metal.
4. according to any described folding ultra material radio frequency miniature antenna of claim 1 to 3; It is characterized in that said metal micro 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.
5. folding ultra material radio frequency miniature antenna according to claim 1 is characterized in that said first sheet metal is connected through plated-through hole with second sheet metal.
6. folding ultra material radio frequency miniature antenna according to claim 1 is characterized in that said first feeder line is connected through plated-through hole with second feeder line.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100621978A CN102683806A (en) | 2011-03-14 | 2011-03-14 | Small foldable metamaterial radio-frequency antenna |
| PCT/CN2011/080438 WO2012122795A1 (en) | 2011-03-14 | 2011-09-30 | Metamaterial radio frequency antenna and method of manufacturing same |
| TW100150010A TWI487189B (en) | 2011-03-14 | 2011-12-30 | A metamaterial antenna and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100621978A CN102683806A (en) | 2011-03-14 | 2011-03-14 | Small foldable metamaterial radio-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102683806A true CN102683806A (en) | 2012-09-19 |
Family
ID=46815402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100621978A Pending CN102683806A (en) | 2011-03-14 | 2011-03-14 | Small foldable metamaterial radio-frequency antenna |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102683806A (en) |
| TW (1) | TWI487189B (en) |
| WO (1) | WO2012122795A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025630Y (en) * | 2007-02-14 | 2008-02-20 | 东南大学 | Broadband Miniaturized Printed Antenna |
| CN101355195A (en) * | 2008-08-29 | 2009-01-28 | 浙江大学 | UHF RFID Dual Band Anti-Metal Tag Antenna |
| US20090096582A1 (en) * | 2007-10-10 | 2009-04-16 | Electronics And Telecommunications Research Institute | Radio frequency identification tag antenna using proximity coupling for attaching to metal |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6486853B2 (en) * | 2000-05-18 | 2002-11-26 | Matsushita Electric Industrial Co., Ltd. | Chip antenna, radio communications terminal and radio communications system using the same and method for production of the same |
| CN101015089A (en) * | 2004-02-18 | 2007-08-08 | 皇家飞利浦电子股份有限公司 | Antenna |
| TW200950208A (en) * | 2008-05-30 | 2009-12-01 | Vanskee Entpr S Pte Ltd | Radio Frequency (RF) antenna and its manufacturing method |
| CN201490377U (en) * | 2009-05-25 | 2010-05-26 | 蔡周贤 | electrical connector |
| CN201508905U (en) * | 2009-09-08 | 2010-06-16 | 中兴通讯股份有限公司 | Antennae applied for handheld reader and handheld reader |
-
2011
- 2011-03-14 CN CN2011100621978A patent/CN102683806A/en active Pending
- 2011-09-30 WO PCT/CN2011/080438 patent/WO2012122795A1/en active Application Filing
- 2011-12-30 TW TW100150010A patent/TWI487189B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025630Y (en) * | 2007-02-14 | 2008-02-20 | 东南大学 | Broadband Miniaturized Printed Antenna |
| US20090096582A1 (en) * | 2007-10-10 | 2009-04-16 | Electronics And Telecommunications Research Institute | Radio frequency identification tag antenna using proximity coupling for attaching to metal |
| CN101355195A (en) * | 2008-08-29 | 2009-01-28 | 浙江大学 | UHF RFID Dual Band Anti-Metal Tag 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012122795A1 (en) | 2012-09-20 |
| TW201238143A (en) | 2012-09-16 |
| TWI487189B (en) | 2015-06-01 |
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Application publication date: 20120919 |