CN102931473A - 2.4GHz/5.8GHz dual-frequency wireless communication device - Google Patents
2.4GHz/5.8GHz dual-frequency wireless communication device Download PDFInfo
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- CN102931473A CN102931473A CN201110228431XA CN201110228431A CN102931473A CN 102931473 A CN102931473 A CN 102931473A CN 201110228431X A CN201110228431X A CN 201110228431XA CN 201110228431 A CN201110228431 A CN 201110228431A CN 102931473 A CN102931473 A CN 102931473A
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- 238000004891 communication Methods 0.000 title claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 69
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- 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
- 229910010293 ceramic material Inorganic materials 0.000 description 1
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- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The invention discloses a 2.4GHz/5.8GHz dual-frequency wireless communication device which comprises a dual-radio frequency antenna, wherein the dual-radio frequency antenna comprises a feed point, a feeder line connected with the feed point, and a metal structure, wherein the feeder line is mutually coupled with the metal structure, and the metal structure at least ensures that two electromagnetic waves with different wavebands resonate. Therefore, the 2.4GHz/5.8GHz dual-frequency wireless communication device only needs to adopt one antenna, so as to meet the requirements of miniaturization and multi-mode working trend.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of 2.4GHz/5.8GHz double-frequency wireless communication device.
Background technology
Growing along with wireless communication technology makes the wireless telecommunications electronic equipment carry out simultaneously a plurality of different frequency range communication needs and day by day strengthens.Many radio-frequency antennas of the general employing of existing wireless telecommunications electronic equipment.Yet the important indicators such as the size of these 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.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).The Radiation work frequency of traditional 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, antenna needs multimode operation, just 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, miniaturization, multimodal antenna technology become 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, the traditional antenna technology is difficult to carry out under the size-constrained prerequisite in 2.4GHz/5.8GHz double-frequency wireless communication device, and the above-mentioned requirement of system design that is difficult to satisfy the Modern Communication System low-power consumption of prior art; The invention provides a kind of framework of breaking through the traditional antenna design, save the somewhat complex design of impedance matching network, guarantee its miniaturization, make the 2.4GHz/5.8GHz double-frequency wireless communication device that the aerial radiation area utilization is high, antijamming capability is strong.
A kind of 2.4GHz/5.8GHz double-frequency wireless communication device comprises a pair of radio-frequency antenna, and the Double RF antenna comprises a distributing point, the feeder line that is connected with this distributing point and a metal structure; Feeder line and metal structure intercouple; Described metal structure makes the electromagnetic wave resonance of two different-wavebands at least.
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, is provided with several metallized through holes on the described ground unit.
Further, described metal structure is the 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 all are arranged on described medium substrate one surface.
Further, described feeder line links to each other with described metal structure electricity.
Further, the described feeder line end that adopts the encirclement mode to be arranged at described metal structure periphery and feeder line is arranged at the peripheral optional position of metal structure.
Further, described macromolecular material is FR-4 and F
4Among the B any one.
Further, be provided with nonmetallic anti-oxidation film on the described Double RF antenna surface.
Further, described metal structure be described metal structure length and wide can be arbitrarily.
The metal structure of the electromagnetic wave resonance that adopts the artificial electromagnetic material Theoretical Design to send as an envoy to make at least two different-wavebands, and choose the metal structure of impedance matching according to the employing wireless electronic product; Because the physical size of these metal structure sizes is not limited by the physical length of half-wavelength; Described metal structure and feeder line carried out signal coupling and form Double RF antenna among the present invention.Described Double RF antenna can receive and send the electromagnetic wave that makes at least two different-wavebands simultaneously, therefore uses a Double RF antenna of the present invention can satisfy simultaneously the multi-mode working of multiband; Minimizing 2.4GHz/5.8GHz double-frequency wireless communication device in the market needs the situation of at least two antennas at the multi-mode working of multiband.In addition, metal structure is to design not limited by the physical length of half-wavelength, therefore can design corresponding large miniature antenna according to the size of 2.4GHz/5.8GHz double-frequency wireless communication device own, to satisfy the miniaturization demand of wireless communication apparatus.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the schematic diagram of 2.4GHz/5.8GHz double-frequency wireless communication device of the present invention;
Fig. 2 is the Double RF antenna plane structure chart of an embodiment of the present invention;
Fig. 3 is that Double RF antenna shown in Figure 1 depends on the structure chart on the medium substrate;
Fig. 4 is metal structure and the another kind of signal feed-in of the feeder line mode plane structure chart on the Double RF antenna of the present invention;
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 the 4th kind of feed-in mode plane structure chart of feeder line of Double RF antenna of the present invention;
Fig. 7 is the Double RF antenna plane structure chart of a complementary metal structure of Double RF antenna shown in Figure 2;
Fig. 8 is the part plane structure chart of the Double RF antenna of fifth embodiment of the invention.
Embodiment
The present invention will be further described below in conjunction with drawings and the specific embodiments:
See also Fig. 1 and Fig. 2, be the schematic diagram of 2.4GHz/5.8GHz double-frequency wireless communication device of the present invention and the Double RF antenna plane structure chart of a built-in execution mode.Described 2.4GHz/5.8GHz double-frequency wireless communication 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 two frequency range electromagnetic waves of 4.9GHz-5.9GHz, thereby realizes that 2.4GHz/5.8GHz double-frequency wireless communication device 100 carries out the two-band communication simultaneously.Certainly, in order to improve the reception of wireless signals performance, Double RF antenna 10 can be placed on the body 101.2.4GHz/5.8GHz the double-frequency wireless communication device includes but not limited to the various 2.4GHz of working in and the 5.8GHz electronic equipments such as wireless data card, wireless router, mobile phone, personal digital assistant, guider, blue-tooth device and WIFI wireless base station.
Above-mentioned Double RF antenna 10 comprises a distributing point 5, the feeder line 4 that is connected with this distributing point 5 and the metal structure 6 of a plane tabular.Wherein feeder line 4 intercouples with metal structure 6; Described metal structure 6 is for adopting the artificial electromagnetic material theory to design, and namely super material technology is theoretical; Described artificial electromagnetic material refers to sheet metal fabrication design (such as modes such as employing etch processs) is become the metal structure of the electromagnetic definite shape of response, described artificial electromagnetic material also can transform electromagnetic wave with high frequency electrical signal, makes at least 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 violent variation can occur frequency.Thereby can design based on the fundamental characteristics of artificial electromagnetic material method for designing with metal structure, so that the medium substrate that metal structure depends on it has formed a highly dispersed extraordinary electromagnetic material equivalently, thereby realize the antenna that radiation characteristic is abundant.
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 arbitrarily, 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 areas.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 also is copper and silver combination.
Present embodiment utilizes the characteristic of artificial electromagnetic material, the mode of metal structure is engraved in employing at sheet metal, form an effective dielectric constant according to the electromagnetic material of Lorentz lorentz's material resonances model dispersion so that metal structure and the medium that depends on metal structure are common, thereby design the shake antenna of frequency range of multi resonant.In the present embodiment, metal structure 6 makes 2.4GHz-2.49GHz and two frequency range electromagnetic waves of 4.9GHz-5.9GHz 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 planforms keep with present embodiment in consistent.
See also 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 all are arranged on described medium substrate 7 one surfaces; Described feeder line 4 adopts the described metal structure 6 of coupled modes feed-in.Described medium substrate 7 can adopt the medium substrate of air, pottery or insulation function.Among the present invention, medium substrate 7 is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being made by macromolecular material, can be FR-4, F particularly
4The macromolecular materials such as B.
Please in the lump with reference to figure 4, Fig. 5 and Fig. 6, signal feed-in mode can adopt various ways between described feeder line 4 and the metal structure 6.As shown in Figure 4, described feeder line 4 directly links to each other with described metal structure 6; And described feeder line 4 and the connecting point position that links to each other of metal structure 6 can be positioned at the optional position on the metal structure 6.Shown in Fig. 5,6, the end that feeder line 4 adopts the encirclement modes to be arranged at described metal structure 6 peripheries and feeder line 4 is arranged at metal structure 6 peripheral optional positions.
See also Fig. 7, according to the 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 two frequency ranges of 5.8GHz.Therefore based on this.Also can be designed to resonance band and comprise the Double RF antenna of 2.4GHz and 5.8GHz.
In the present embodiment, about the processing and manufacturing of Double RF 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 refer to utilize the accurate processing of PCB to finish the processing partly of chip micro-structural, finish other slave part with iron plate.Owing to adopt cheaply that copper product forms described metal structure 6, thus oxidized and Double RF antenna 10 resonance frequency shifts or performance are sharply descended easily in the exposure air, so be provided with nonmetallic anti-oxidation film on the Double RF antenna surface.Because main performance of the present invention all concentrates on the design of metal structure 6 topological sum chips part, therefore, the lead-in wire of feeder line 4 affects less to the radiation frequency of Double RF antenna 10.Based on these characteristics, the 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 used 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 the 2.4GHz/5.8GHz wireless communication apparatus.
The above is described embodiments of the invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from 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. a 2.4GHz/5.8GHz double-frequency wireless communication device is characterized in that, described double-frequency wireless communication device comprises a pair of radio-frequency antenna, and the Double RF antenna comprises a distributing point, the feeder line that is connected with this distributing point and a metal structure; Feeder line and metal structure intercouple; Described metal structure makes the electromagnetic wave resonance of two different-wavebands at least.
2. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 1 is characterized in that, the electromagnetic frequency band of described two kinds of different-wavebands is 2.4GHz-2.49GHz and 4.9GHz-5.9GHz.
3. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 1 is characterized in that, described Double RF antenna also comprises ground unit, is provided with several metallized through holes on the described ground unit.
4. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 3 is characterized in that described metal structure is the plane tabular structure.
5. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 3, it is characterized in that, described Double RF antenna also comprises a medium substrate, and described distributing point, ground unit, feeder line and a metal structure all are arranged on described medium substrate one surface.
6. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 5 is characterized in that, described feeder line links to each other with described metal structure electricity.
7. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 5 is characterized in that, the end that described feeder line adopts the encirclement mode to be arranged at described metal structure periphery and feeder line is arranged at the peripheral optional position of metal structure.
8. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 7 is characterized in that, described macromolecular material is FR-4 and F
4Among the B any one.
9. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 1 is characterized in that, is provided with nonmetallic anti-oxidation film on the described Double RF antenna surface.
10. 2.4GHz/5.8GHz double-frequency wireless communication device according to claim 4 is characterized in that, described metal structure be described metal structure length and wide can be arbitrarily.
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 |
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| CN102931473A true CN102931473A (en) | 2013-02-13 |
| CN102931473B 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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