CN102931473B - 2.4GHz/5.8GHz dual-band wireless communications device - Google Patents
2.4GHz/5.8GHz dual-band wireless communications device Download PDFInfo
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- CN102931473B CN102931473B CN201110228431.XA CN201110228431A CN102931473B CN 102931473 B CN102931473 B CN 102931473B CN 201110228431 A CN201110228431 A CN 201110228431A CN 102931473 B CN102931473 B CN 102931473B
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- 238000004891 communication Methods 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 69
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- 238000013461 design Methods 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 12
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- 230000003064 anti-oxidating effect Effects 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
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- 241000338742 Erebia meta Species 0.000 description 1
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Abstract
A kind of 2.4GHz/5.8GHz dual-band wireless communications device comprises a pair of radio-frequency antenna, and Double RF antenna comprises a distributing point, the feeder line be connected with this distributing point and a metal structure; Feeder line and metal structure intercouple; Described metal structure at least makes the electromagnetic wave resonance of two different-wavebands.Thus make 2.4GHz/5.8GHz dual-band wireless communications device only need adopt an antenna, make its satisfied miniaturization and multimodal work trend.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of 2.4GHz/5.8GHz dual-band wireless communications device.
Background technology
Growing along with wireless communication technology, makes wireless telecommunications electronic equipment carry out multiple different frequency range communication need simultaneously and day by day strengthens.Existing wireless telecommunications electronic equipment generally adopts many radio-frequency antennas.But the important indicator such as the size of these antenna, bandwidth, gain but receives the restriction (gain margin under fixed dimension, bandwidth limit etc.) of basic physical principle.The general principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and the complexity of electromagnetic field analysis due to radio-frequency devices, approaching these limiting values all becomes huge technological challenge.Such as, traditional terminal communication antenna mainly designs based on the radiation theory of electric monopole or dipole, the most frequently used planar inverted-F antenna (PIFA).Directly and the size positive correlation of antenna, the area positive correlation of bandwidth sum antenna, makes the design of antenna usually need the physical length of half-wavelength for the Radiation work frequency of traditional antenna.
In the electronic system that some are more complicated, antenna needs multimode operation, just needs the impedance matching network design outside feed antenna forehead.But the feeder line design of electronic system that what impedance matching network was extra add, increase radio system area simultaneously matching network also introduce many energy losses, be difficult to the requirement of system design meeting low-power consumption.Therefore, miniaturized, multimodal antenna technology becomes a problem demanding prompt solution of contemporary wireless telecommunications electronic equipment.
Summary of the invention
The technical problem to be solved in the present invention is, is difficult to carry out under the prerequisite that traditional antenna technology is size-constrained in 2.4GHz/5.8GHz dual-band wireless communications device, and the above-mentioned of prior art is difficult to the requirement of system design meeting Modern Communication System low-power consumption; The invention provides a kind of framework breaking through traditional antenna design, save the somewhat complex design of impedance matching network, ensure that it is miniaturized, make the 2.4GHz/5.8GHz dual-band wireless communications device that aerial radiation area utilization is high, antijamming capability is strong.
A kind of 2.4GHz/5.8GHz dual-band wireless communications device comprises a pair of radio-frequency antenna, and Double RF antenna comprises a distributing point, the feeder line be connected with this distributing point and a metal structure; Feeder line and metal structure intercouple; Described metal structure at least makes the electromagnetic wave resonance of two different-wavebands.
Further, the electromagnetic frequency band of described two kinds of different-wavebands is 2.4GHz-2.49GHz and 4.9GHz-5.9GHz.
Further, described Double RF antenna also comprises ground unit, described ground unit is provided with several metallized through holes.
Further, described metal structure is plane tabular structure.
Further, described Double RF antenna also comprises a medium substrate, and described distributing point, ground unit, feeder line and a metal structure are all arranged at described medium substrate one on the surface.
Further, described feeder line is connected with described metal structure electricity.
Further, described feeder line adopts encirclement mode to be arranged at peripheral with described metal structure and the end of feeder line is arranged at the peripheral optional position of metal structure.
Further, described macromolecular material is FR-4 and F
4in B any one.
Further, described Double RF antenna surface is provided with nonmetallic anti-oxidation film.
Further, described metal structure be described metal structure length and wide can be arbitrary.
Adopt artificial electromagnetic material Theoretical Design to send as an envoy to the metal structure of the electromagnetic wave resonance at least making two different-wavebands, and choose the metal structure of impedance matching according to employing wireless electronic product; Because the physical size of these metal structure sizes does not limit by the physical length of half-wavelength; By the Double RF antenna that described metal structure and feeder line are carried out signal coupling and formed in the present invention.Described Double RF antenna can receive simultaneously and send the electromagnetic wave at least making two different-wavebands, therefore uses a Double RF antenna of the present invention can meet the multi-mode working of multiband simultaneously; Reduce 2.4GHz/5.8GHz dual-band wireless communications device in the market needs at least two antennas situation at the multi-mode working of multiband.In addition, metal structure designs not limit by the physical length of half-wavelength, therefore can design corresponding large miniature antenna, to meet the miniature requirement of wireless communication apparatus according to the size of 2.4GHz/5.8GHz dual-band wireless communications device own.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the schematic diagram of 2.4GHz/5.8GHz dual-band wireless communications device of the present invention;
Fig. 2 is the Double RF antenna plane structure chart of an embodiment of the present invention;
Fig. 3 depends on the structure chart on a medium substrate for the antenna of Double RF shown in Fig. 1;
Fig. 4 is metal structure on Double RF antenna of the present invention and feeder line another kind of signal feed-in mode plane structure chart;
Fig. 5 is metal structure and the third feed-in mode plane structure chart of feeder line of Double RF antenna of the present invention;
Fig. 6 is metal structure and feeder line the 4th kind of feed-in mode plane structure chart of Double RF antenna of the present invention;
The Double RF antenna plane structure chart of the complementary metal structure that Fig. 7 is the antenna of Double RF shown in Fig. 2;
Fig. 8 is the part planar structure chart of the Double RF antenna of fifth embodiment of the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described:
Referring to Fig. 1 and Fig. 2, is the schematic diagram of 2.4GHz/5.8GHz dual-band wireless communications device of the present invention and the Double RF antenna plane structure chart of a built-in execution mode.Described 2.4GHz/5.8GHz dual-band wireless communications device 100 comprises a body 101 and is built in the Double RF antenna 10 of body 101.Described Double RF antenna 10 can receive 2.4GHz-2.49GHz and 4.9GHz-5.9GHz two frequency range electromagnetic waves, thus realizes 2.4GHz/5.8GHz dual-band wireless communications device 100 and carry out two-band communication simultaneously.Certainly, in order to improve reception of wireless signals performance, Double RF antenna 10 can be placed on body 101.2.4GHz/5.8GHz dual-band wireless communications device includes but not limited to that wireless data card, wireless router, mobile phone, personal digital assistant, guider, blue-tooth device and WIFI wireless base station etc. are various and works in 2.4GHz and 5.8GHz electronic equipment.
Above-mentioned Double RF antenna 10 comprises the metal structure 6 of a distributing point 5, the feeder line 4 be connected with this distributing point 5 and a plane tabular.Wherein feeder line 4 and metal structure 6 intercouple; Described metal structure 6 designs for adopting artificial electromagnetic material theory, i.e. Meta Materials technical know-how; Described artificial electromagnetic material refers to metal structure sheet metal fabrication design (as adopted the modes such as etch process) being become the electromagnetic definite shape of response, high frequency electrical signal also can be transformed electromagnetic wave by described artificial electromagnetic material, at least makes the electromagnetic wave resonance of two kinds of different wave lengths according to the metal structure of artificial electromagnetic material design; Its performance directly depends on the metal structure of electromagnetic wave sub-wavelength.Especially in the resonance band of metal structure, artificial electromagnetic material embodies the dispersion characteristics of height usually, in other words, the impedance of metal structure, holds perception, equivalent dielectric constant and magnetic permeability along with frequency violent change can occur.Thus can design based on the fundamental characteristics of artificial electromagnetic material design method by metal structure, the medium substrate that metal structure is depended on it constitutes a highly dispersed extraordinary electromagnetic material equivalently, thus realizes the abundant antenna of radiation characteristic.
In the present embodiment, described metal structure 6 is axisymmetric plane tabular metal structure.The length of described metal structure 6 and wide can be arbitrary, mainly determine concrete size according to the mechanism design of its applying electronic equipment, certainly as far as possible large in the mechanism space that its applying electronic equipment allows at metal structure 6 area.Wherein metal structure 6 is made for copper or ag material.Be preferably copper, cheap, conduct electricity very well.In order to realize better impedance matching, metal structure 12 is also copper and silver combination.
Double RF antenna 10 also comprises ground unit 8, described ground unit 8 is provided with several metallized through holes 81.In the present embodiment, described ground unit 8 distributes described distributing point 5 both sides symmetrically.
The present embodiment utilizes the characteristic of artificial electromagnetic material, adopt the mode of engraving into metal structure on sheet metal, make metal structure and jointly form the electromagnetic material of an effective dielectric constant according to the dispersion of Lorentz lorentz's material resonances model with the medium that metal structure depends on, thus design the antenna of multi-resonant frequency range.In the present embodiment, metal structure 6 makes 2.4GHz-2.49GHz and 4.9GHz-5.9GHz two frequency range electromagnetic wave resonance as shown in Figure 1; The length of described metal structure 6 and widely can do any adjustment (as shown in Figure 8) according to electronic equipment mechanism layout, but metal structure 6 planform keeps consistent with the present embodiment.
Refer to Fig. 3, described Double RF antenna 10 also comprises a medium substrate 7, and described distributing point 5, ground unit 8, feeder line 4 and a metal structure 6 are all arranged at described medium substrate 7 one on the surface; Described feeder line 4 adopts metal structure 6 described in coupled modes feed-in.Described medium substrate 7 can adopt the medium substrate of air, pottery or insulation function.In the present invention, medium substrate 7 is made up of ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being made up of macromolecular material, can be FR-4, F particularly
4the macromolecular materials such as B.
Please also refer to Fig. 4, Fig. 5 and Fig. 6, between described feeder line 4 and metal structure 6, signal feed-in mode can adopt various ways.As shown in Figure 4, described feeder line 4 is directly connected with described metal structure 6; And described feeder line 4 can be positioned at the optional position in metal structure 6 with the connecting point position that is connected of metal structure 6.As shown in Figure 5,6, feeder line 4 adopts encirclement mode to be arranged at described metal structure 6 is peripheral and the end of feeder line 4 is arranged at the peripheral optional position of metal structure 6.
Refer to Fig. 7, according to artificial electromagnetic material design theory, a metal structure 6 ' complementary with the metal structure 6 of above-mentioned Double RF antenna 10, the resonance band of described metal structure 6 ' comprises 2.4GHz and 5.8GHz two frequency ranges.Therefore based on this.Also the Double RF antenna that resonance band comprises 2.4GHz and 5.8GHz can be designed to.
In the present embodiment, about the processing and manufacturing of Double RF antenna 10, as long as meet design principle of the present invention, various manufacture can be adopted.Prevailing method is the manufacture method using all kinds of printed circuit board (PCB) (PCB), and the PCB as covered copper manufactures and all can meet processing request of the present invention.Except this processing mode, other manufacturing process can also be introduced according to the actual needs, as conductive silver paste ink processing mode, all kinds of can the processing mode that combines of the flexible PCB processing of deformable element, the processing mode of iron plate antenna and iron plate and PCB.Wherein, iron plate and PCB Combined machining mode refer to and utilize the accurate processing of PCB to complete the processing of chip microstructure portion, complete other slave part with iron plate.Owing to adopting the copper product of low cost to form described metal structure 6, therefore easily oxidized in exposure air and Double RF antenna 10 resonance frequency shift or performance are sharply declined, therefore Double RF antenna surface is provided with nonmetallic anti-oxidation film.Because main performance of the present invention all concentrates on the design of metal structure 6 topological sum chip part, therefore, the radiation frequency impact of lead-in wire on Double RF antenna 10 of feeder line 4 is relatively little.Based on this feature, Double RF antenna can be placed in any position of system, the complexity of the installation testing of simplification flexibly.
Above-mentioned Double RF antenna 10 directly can be applied and can directly be arranged on the pcb board of 2.4GHz/5.8GHz wireless communication apparatus, also can adopt interface that Double RF antenna 10 is connected by the pcb board of an interface with 2.4GHz/5.8GHz wireless communication apparatus.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (5)
1. a 2.4GHz/5.8GHz dual-band wireless communications device, is characterized in that, described dual-band wireless communications device comprises a pair of radio-frequency antenna, and Double RF antenna comprises a distributing point, the feeder line be connected with this distributing point and a metal structure; Feeder line and metal structure intercouple, and described metal structure is axisymmetric plane tabular metal structure; At least make the electromagnetic wave resonance of two different-wavebands according to the described metal structure of artificial electromagnetic material design, the electromagnetic frequency band of described two kinds of different-wavebands is 2.4GHz-2.49GHz and 4.9GHz-5.9GHz;
Wherein, described Double RF antenna also comprises ground unit, described ground unit is provided with several metallized through holes, the both sides of described distributing point and described ground unit distributes symmetrically;
Wherein, described Double RF antenna also comprises a medium substrate, and described distributing point, ground unit, feeder line and a metal structure are all arranged at described medium substrate one on the surface.
2. 2.4GHz/5.8GHz dual-band wireless communications device according to claim 1, is characterized in that, described feeder line adopts encirclement mode to be arranged at peripheral with described metal structure and the end of feeder line is arranged at the peripheral optional position of metal structure.
3. 2.4GHz/5.8GHz dual-band wireless communications device according to claim 2, it is characterized in that, described medium substrate is made up of ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material, described macromolecular material be in FR-4 and F4B any one.
4. 2.4GHz/5.8GHz dual-band wireless communications device according to claim 1, is characterized in that, described Double RF antenna surface is provided with nonmetallic anti-oxidation film.
5. 2.4GHz/5.8GHz dual-band wireless communications device according to claim 1, is characterized in that, described metal structure be described metal structure length and wide can be arbitrary.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228431.XA CN102931473B (en) | 2011-08-10 | 2011-08-10 | 2.4GHz/5.8GHz dual-band wireless communications device |
| TW100135534A TWI487199B (en) | 2011-08-10 | 2011-09-30 | Dual-band antenna, mimo antenna device and dual-band wireless communication device |
| PCT/CN2011/080553 WO2013020321A1 (en) | 2011-08-10 | 2011-10-08 | Dual-frequency antenna, mimo antenna device and 2.4ghz/5.8ghz dual-frequency wireless communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228431.XA CN102931473B (en) | 2011-08-10 | 2011-08-10 | 2.4GHz/5.8GHz dual-band wireless communications device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102931473A CN102931473A (en) | 2013-02-13 |
| CN102931473B true CN102931473B (en) | 2016-03-30 |
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| CN201110228431.XA Active CN102931473B (en) | 2011-08-10 | 2011-08-10 | 2.4GHz/5.8GHz dual-band wireless communications device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588693A (en) * | 2004-09-23 | 2005-03-02 | 上海交通大学 | Small wide frequency printed single pole antenna |
| CN2865039Y (en) * | 2006-01-23 | 2007-01-31 | 汉达精密电子(昆山)有限公司 | Plane bifrequency antenna |
| CN1972008A (en) * | 2005-11-24 | 2007-05-30 | 脉冲芬兰有限公司 | Multiband antenna component |
| 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 |
| CN102005645A (en) * | 2010-12-02 | 2011-04-06 | 哈尔滨工程大学 | Miniaturized dual-frequency antenna |
-
2011
- 2011-08-10 CN CN201110228431.XA patent/CN102931473B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588693A (en) * | 2004-09-23 | 2005-03-02 | 上海交通大学 | Small wide frequency printed single pole antenna |
| CN1972008A (en) * | 2005-11-24 | 2007-05-30 | 脉冲芬兰有限公司 | Multiband antenna component |
| CN2865039Y (en) * | 2006-01-23 | 2007-01-31 | 汉达精密电子(昆山)有限公司 | Plane bifrequency 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 |
| CN102005645A (en) * | 2010-12-02 | 2011-04-06 | 哈尔滨工程大学 | Miniaturized dual-frequency antenna |
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