CN103022654A - Dipole antenna and mobile multimedia broadcasting device - Google Patents
Dipole antenna and mobile multimedia broadcasting device Download PDFInfo
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- CN103022654A CN103022654A CN2011102864866A CN201110286486A CN103022654A CN 103022654 A CN103022654 A CN 103022654A CN 2011102864866 A CN2011102864866 A CN 2011102864866A CN 201110286486 A CN201110286486 A CN 201110286486A CN 103022654 A CN103022654 A CN 103022654A
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- 239000002184 metal Substances 0.000 claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 claims abstract description 86
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 23
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000004891 communication Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 description 13
- 238000013461 design Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention provides a dipole antenna. The antenna comprises a substrate, a first metal sheet, a second metal sheet, a first feeder line and a second feeder line; the first metal sheet and the second metal sheet are arranged on one surface of the substrate; the substrate is rectangular and is provided with a first central line and a second central line which is vertical to the first central line; the first metal sheet and the second metal sheet are mutually symmetrical about the first central line in a corresponding way, as well as a first groove topological structure and a second groove topological structure which are engraved on the first metal sheet and the second metal sheet respectively are mutually symmetrical about the first central line in the corresponding way; and the first feeder line and the second feeder line respectively surround the first metal sheet and the second metal sheet, a first feeder sheet with a notch which faces the second metal sheet is arranged at one end (close to the first central line) of the first feeder line, and a second feeder sheet opposite to the notch of the first feeder sheet is arranged at one end (close to the first central line) of the second feeder line. The antenna provided by the invention is an antenna designed by applying a metamaterial technology and is used for enabling an electromagnetic wave to resonate, so as to meet the needs of miniaturization and antenna internal arrangement of wireless communication equipment.
Description
Technical field
The invention belongs to domain of communication equipment, be specifically related to a kind of dipole antenna.
Background technology
Along with the development of wireless communication technique, wireless telecommunications system has had more and more higher requirement, various structures has also been arranged adapting to the requirement of communication apparatus and receive with the antenna that sends as electromagnetic wave, with regard to performance or the structure of antenna higher challenge has been arranged.
Antenna is as radiating element and the receiving device of final radiofrequency signal, and its operating characteristic will directly affect the service behaviour of whole electronic system.Yet the important indicators such as the size of antenna, bandwidth, gain but have been subject to the restriction (gain margin under the fixed dimension, bandwidth limit etc.) of basic physical principle.The basic principle of these index limit so that 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 work frequency of tradition dipole antenna directly and the size positive correlation of antenna, the area positive correlation of bandwidth and antenna is so that the design of antenna needs the physical length of half-wavelength usually.In some more complicated electronic systems, need to design by the impedance matching network outside the feed antenna forehead.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, the new antenna technology of miniaturization becomes an important technology bottleneck of contemporary electronics integrated system.
In existing Mobile multi-media broadcasting device, particularly the antenna in the vehicle-mounted mobile multi-media broadcasting device is because antenna self performance and volume restrictions can not satisfy current demand, these are embodied in: antenna volume is larger, be placed in the compartment or roof all will take than large space, and the whole outward appearance of impact; Antenna need to be placed on equipment usually, causes the strength retrogression of wiring complexity, signal serious.Under Mobile multi-media broadcasting device miniaturization, integrated development trend, these problems that antenna brings become the technology barrier of this development trend.
Summary of the invention
In order to solve the problem that exists in the existing dipole antenna, the invention provides a kind of dipole antenna, by using super material technology designing antenna structure, under the prerequisite that satisfies the communication appliance performance requirement, realize the miniaturization of antenna, to achieve these goals, the present invention is by the following technical solutions:
A kind of dipole antenna comprises: substrate, the first sheet metal that is arranged on substrate one surface and the second sheet metal, the first feeder line and the second feeder line; Described substrate is rectangular and have the first center line; The first groove topological structure of engraving out respectively on described the first sheet metal and described the second sheet metal, described the first sheet metal and the second sheet metal and the second groove topological structure correspondence are symmetrical in mutually described the first center line; Described the first feeder line and described the second feeder line are respectively around described the first sheet metal and described the second sheet metal, one end of close described the first center line of described the first feeder line is provided with the first feedback sheet towards the recess of described the second sheet metal, and described the second feeder line is near an end setting of described the first center line second feedback sheet relative with the described recess of described the first feedback sheet.
Further, described substrate has second center line vertical with described the first center line; Described the first sheet metal is symmetrical in described the second center line.
Further, described the first groove topological structure is opening spiral ring structure at described the second center line either side.
Further, described the first feedback sheet and described the second feedback sheet are of coupled connections.
Further, the described recess of described the first feedback sheet and the rectangular shape of described the second feedback sheet, described the second feedback sheet stretches into the described recess of described the first feedback sheet.
Further, the groove width of described the first groove topological structure equates with the spacing of adjacent slot in described the first groove topological structure.
Further, the width of described the first feeder line, described the first feeder line equate with the groove width of described the first groove topological structure with distance between described the first sheet metal.
Further, the groove width of described the first groove topological structure is 0.3mm.
As preferably, described substrate is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
The present invention has also set forth a kind of Mobile multi-media broadcasting device, and described Mobile multi-media broadcasting device comprises above-described dipole antenna.
Antenna of the present invention is the antenna that the super material technology of application designs the electromagnetic wave resonance of sening as an envoy to, the physical size that determines the sheet metal size of this antenna volume is not limited by the physical length of half-wavelength, this sheet metal and feeder line carry out signal coupling can obtain antenna among the present invention, can go out corresponding antenna according to the size design of wireless telecommunications system own, satisfy the demand of wireless telecommunications system miniaturization, built-in antenna.This antenna of mobile wireless multimedia application of installation among the present invention has been realized the built-in of antenna, has solved the problems such as the external wiring that causes of antenna is complicated, line fault is more; This device can the Real-time Obtaining broadcast program, and obtains good audio visual effect; So that antenna no longer affects outward appearance, be suitable for promoting.
Description of drawings
Fig. 1 is the structural representation of dipole antenna embodiment 1 of the present invention;
Fig. 2 is the structural representation of dipole antenna embodiment 2 of the present invention;
Fig. 3 is the S parameters simulation figure of the embodiment of the invention 2;
Fig. 4 is the embodiment of the invention 2 E direction radiation pattern measurement when operating in 2.4GHz;
Fig. 5 is the structural representation of a kind of Mobile multi-media broadcasting device of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and the specific embodiments.
Namely from the look antenna of two arms of input, dipole antenna of the present invention adopts the artificial electromagnetic material theory to design to so-called dipole antenna, i.e. super material technology theory; Described artificial electromagnetic material refers to sheet metal fabrication design (such as modes such as employing etch processs) is become the sheet metal structure of the electromagnetic definite shape of response, and described artificial electromagnetic material also can transform high frequency electrical signal electromagnetic wave; Its performance directly depends on the sheet metal structure of electromagnetic wave sub-wavelength.Especially in the resonance band of sheet metal structure, artificial electromagnetic material embodies the dispersion characteristics of height usually, in other words, the impedance of sheet metal structure, holds perception, equivalent dielectric constant and magnetic permeability along with violent variation can occur frequency.Thereby can design based on the fundamental characteristics of artificial electromagnetic material method for designing with sheet metal structure, so that the medium substrate that sheet metal depends on it has formed a highly dispersed extraordinary electromagnetic material equivalently, thereby realize the antenna that radiation characteristic is abundant.
Be illustrated in figure 1 as the structural representation of the dipole antenna of the embodiment of the invention 1.Antenna 10 in the present embodiment comprises substrate 7, is arranged on substrate 7 one lip-deep the first sheet metals 6 and the second sheet metal 8, the first feeder line 4 and the second feeder line 5.Wherein, substrate 7 is rectangular, and this substrate 7 has the first center line a and the second center line b vertical with the first center line a.On the first sheet metal 6 and the second sheet metal 8, engrave out respectively the first groove topological structure 61 and the second groove topological structure 81, the first sheet metals 6, the first groove topological structure 61 and the second sheet metal 8, the second groove topological structure 81 corresponding be symmetrical in mutually the first center line a.The first feeder line 4 and the second feeder line 5 are respectively around the first sheet metal 6 and the second sheet metal 8, by coupled modes difference feed-in the first sheet metal 6 and the second sheet metal 8, end at the first feeder line 4 close the first center line a is provided with the first feedback sheet 3, the first feedback sheet 3 is provided with recess 31 on the one side towards the second sheet metal 8, end at the second feeder line 5 close the first center line a is provided with the second feedback sheet 9, the second feedback sheet 9 is relative with the recess 31 of the first feedback sheet 3, the first feedback sheet 3, recess 31 on the first feedback sheet 3 and the second feedback sheet 9 be rectangular shape all, the second feedback sheet 9 stretches in the recess 31 of the first feedback sheet 3, and the first feedback sheet 3 and the second feedback sheet 9 are of coupled connections.
Engrave out respectively the first groove topological structure 61 and the second groove topological structure 81 among the present invention on the first sheet metal 6 and the second sheet metal 8, after removing the material of the first groove topological structure 61 and the second groove topological structure 81 correspondences when engraving, on the first sheet metal 6 and the second sheet metal 8, present respectively the first metal routing 62 and the second metal routing 82; The spacing of adjacent slot is the width of the first metal routing 62 in the first groove topological structure 61, the groove width of the first groove topological structure 61 equates with the width of the first metal routing 62, the width of the first feeder line 4 and the first feeder line 4 equate with the groove width of the first groove topological structure 61 with the spacing of the first sheet metal 6, be 0.3mm in the present embodiment 1.
In the present embodiment 1, the first sheet metal 6 self is symmetrical in the second center line b, thereby, the first micro groove structure 61 and the first metal routing 62 that are arranged on the first sheet metal 6 also are symmetrical in the second center line b, and the first groove topological structure 61 is opening spiral ring structure at the either side of the second center line.Since the second sheet metal 8, the second groove topological structure 81, the second metal routing 82 and the first sheet metal 6, the first micro groove structure 61, the first metal routing 62 corresponding be symmetrical in mutually the first center line a, therefore, similarly, the second sheet metal 8 self is symmetrical in the second center line b, the the second groove topological structure 81 and the second metal routing 82 that are arranged on the second sheet metal 8 also are symmetrical in the second center line b, and the second groove topological structure 81 is opening spiral ring structure at the either side of the second center line.The first sheet metal 6 and the second sheet metal 8 are made by copper or ag material, are preferably copper, and be cheap, conducts electricity very well, and in order to realize better impedance matching, also can be copper and silver combination.
In the present embodiment 1, substrate 7 can be made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material, preferably, made by macromolecular material, and can be the macromolecular materials such as FR-4, F4B particularly.
Be illustrated in figure 2 as the structural representation of the dipole antenna of the embodiment of the invention 2.In this embodiment 2, the dipole antenna 10 of this dipole antenna 10 and embodiment 1 is selected at material, identical aspect the preparation method, the first sheet metal 6 is identical with embodiment 1 with the second sheet metal 8 structures in the present embodiment 2 dipole antennas 10, but compare with embodiment 1, exist the size of the first sheet metal 6 and the second sheet metal 8 different, first the feedback sheet 3 and second the feedback sheet 9 size different, the first feeder line 4 is different with the size of the second feeder line 5, has different resonance frequencys so that the dipole antenna of embodiment 2 is compared from embodiment 1.
Among the present invention, signal feed-in mode can adopt various ways between feeder line and the sheet metal.Feeder line directly links to each other with described sheet metal; And feeder line and the connecting point position that links to each other of sheet metal can be positioned at the optional position on the sheet metal.The end that feeder line adopts the encirclement mode to be arranged at sheet metal periphery and feeder line is arranged at the peripheral optional position of sheet metal.
Be illustrated in figure 3 as the S parameters simulation figure of the embodiment of the invention 2, the antenna that the figure shows embodiment 2 has respectively at 2.3924GHz and 2.6107GHz-10.752dB and-loss of 10.301dB, in this interval, lowest loss reaches-below the 25dB, show that the embodiment of the invention 2 antennas can work in the frequency band near 2.4GHz, and satisfy in the wireless telecommunications system requirement to antenna.
Fig. 4, Fig. 5 show respectively the embodiment of the invention 2 antenna operations when 2.4GHz respectively at vertical plane (E-Plane) and horizontal plane (H-Plane) direction far field simulation result figure, the polarization effect that can observe antenna of the present invention in this result is not second to existing antenna and meet application standard.
Among the present invention, about the processing and manufacturing of dipole antenna 10, as long as satisfy design principle of the present invention, can adopt various manufactures.Prevailing method is to use the manufacture method of all kinds of printed circuit board (PCB)s (PCB), as the PCB that covers copper makes and all can satisfy processing request of the present invention.Except this processing mode, can also introduce according to the actual needs other manufacturing process, but such as the flexible PCB processing of conductive silver paste printing ink processing mode, all kinds of deformation devices, the processing mode of iron plate antenna and the processing mode of iron plate and PCB combination.Wherein, iron plate and PCB combination processing mode refers to utilize the accurate processing of PCB to finish the processing of groove topological structure, finishes other slave part with iron plate.Copper product forms described sheet metal owing to adopting cheaply.Because main performance of the present invention all concentrates on the design of the groove topological structure of sheet metal, therefore, the lead-in wire of feeder line affects less to the radiation frequency of dipole antenna.Based on these characteristics, dipole antenna can be placed in any position of system, the complexity of the installation testing of simplification flexibly.
Modification of dimension, feeder line length are occuring and are changing, can cause during the changes such as greatly closely spaced variation of two feedback sheets the variation of dipole antenna resonance band around mode in dipole antenna of the present invention; and inspire according to this modification to dipole antenna of the present invention all to covered in the design philosophy of dipole antenna of the present invention, all should be subject to protection of the present invention.
Fig. 6 shows a kind of structural representation of Mobile multi-media broadcasting device, this device comprises signal processing module, display module, power module and antenna, power module provides electric energy for the work of this device, antenna all links to each other with signal processing module with display module, antenna reception to signal after signal processing module is processed, be converted to video, audio frequency etc. and exported by display module.Wherein antenna is dipole antenna of the present invention, the signal that receives the 2.4GHz frequency range such as need then can be embodiment 2 described dipole antennas, also can according to this install needs to dipole antenna among the present invention carry out modification of dimension, feeder line length and around mode change, the big or small spacing variation of two feedback sheets etc., to obtain suitable resonance band.Dipole antenna volume of the present invention is little and performance good, can be built in the Mobile multi-media broadcasting device, integrated, the miniaturization of mobile multimedia device has been play a part very important.
Below only be the description to the embodiment of the invention, should not become is limitation of the present invention, does not anyly break away from change under the aim of the present invention all within protection of the present invention.
Claims (10)
1. a dipole antenna is characterized in that, described antenna comprises: substrate, the first sheet metal that is arranged on substrate one surface and the second sheet metal, the first feeder line and the second feeder line; Described substrate is rectangular and have the first center line; The first groove topological structure of engraving out respectively on described the first sheet metal and described the second sheet metal, described the first sheet metal and the second sheet metal and the second groove topological structure correspondence are symmetrical in mutually described the first center line; Described the first feeder line and described the second feeder line are respectively around described the first sheet metal and described the second sheet metal, one end of close described the first center line of described the first feeder line is provided with the first feedback sheet towards the recess of described the second sheet metal, and described the second feeder line is near an end setting of described the first center line second feedback sheet relative with the described recess of described the first feedback sheet.
2. dipole antenna according to claim 1 is characterized in that, described substrate has second center line vertical with described the first center line; Described the first sheet metal is symmetrical in described the second center line.
3. dipole antenna according to claim 1 and 2 is characterized in that, described the first groove topological structure is opening spiral ring structure at described the second center line either side.
4. according to claim 1 and 2 or 3 described dipole antennas, it is characterized in that, described the first feedback sheet and described second is presented sheet and is of coupled connections.
5. according to claim 1 to 4 each described dipole antennas, it is characterized in that, the described recess of described the first feedback sheet and the rectangular shape of described the second feedback sheet, described the second feedback sheet stretches into the described recess of described the first feedback sheet.
6. according to claim 1 to 5 each described dipole antennas, it is characterized in that, the groove width of described the first groove topological structure equates with the spacing of adjacent slot in described the first groove topological structure.
7. according to claim 1 to 6 each described dipole antennas, it is characterized in that, the width of described the first feeder line, described the first feeder line equate with the groove width of described the first groove topological structure with distance between described the first sheet metal.
8. according to claim 6 or 7 described dipole antennas, it is characterized in that, the groove width of described the first groove topological structure is 0.3mm.
9. dipole antenna according to claim 1 is characterized in that, described substrate is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
10. a Mobile multi-media broadcasting device is characterized in that, described Mobile multi-media broadcasting device comprises each described dipole antenna of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286486.6A CN103022654B (en) | 2011-09-23 | 2011-09-23 | Dipole antenna and mobile multimedia broadcasting device |
| PCT/CN2011/082181 WO2013029306A1 (en) | 2011-08-31 | 2011-11-15 | Antenna and mobile multimedia broadcasting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286486.6A CN103022654B (en) | 2011-09-23 | 2011-09-23 | Dipole antenna and mobile multimedia broadcasting device |
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| Publication Number | Publication Date |
|---|---|
| CN103022654A true CN103022654A (en) | 2013-04-03 |
| CN103022654B CN103022654B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110286486.6A Active CN103022654B (en) | 2011-08-31 | 2011-09-23 | Dipole antenna and mobile multimedia broadcasting device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003094293A1 (en) * | 2002-05-01 | 2003-11-13 | The Regents Of The University Of Michigan | Slot antenna |
| CN1691409A (en) * | 2004-04-28 | 2005-11-02 | 夏普株式会社 | Antenna installation, antenna system and broadcast receiving device |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
| CN201781048U (en) * | 2010-08-27 | 2011-03-30 | 威盛电子股份有限公司 | Dipole antenna |
-
2011
- 2011-09-23 CN CN201110286486.6A patent/CN103022654B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003094293A1 (en) * | 2002-05-01 | 2003-11-13 | The Regents Of The University Of Michigan | Slot antenna |
| CN1691409A (en) * | 2004-04-28 | 2005-11-02 | 夏普株式会社 | Antenna installation, antenna system and broadcast receiving device |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
| CN201781048U (en) * | 2010-08-27 | 2011-03-30 | 威盛电子股份有限公司 | Dipole antenna |
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| CN103022654B (en) | 2015-02-04 |
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