CN202217784U - Dual-frequency antenna - Google Patents
Dual-frequency antenna Download PDFInfo
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- CN202217784U CN202217784U CN 201120289233 CN201120289233U CN202217784U CN 202217784 U CN202217784 U CN 202217784U CN 201120289233 CN201120289233 CN 201120289233 CN 201120289233 U CN201120289233 U CN 201120289233U CN 202217784 U CN202217784 U CN 202217784U
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Abstract
The utility model relates to a dual-frequency antenna, comprising a feeding point, a feeder line connected with the feeding point, and a metal structure, wherein the feeder line is mutually coupled with the metal structure, and the metal structure enables at least two electromagnetic waves with different wavelengths to generate resonance. The metal structure related to the electromagnetic wave resonance response is designed by using an artificial electromagnetic material technology, the size of the metal structure is smaller than the size of the traditional antenna structure, thereby enabling the physical size of the antenna not to be limited by the physical length of half-wavelength. The impedance-matched metal structure is selected according to application products, and then the metal structure suitable to the dual-frequency antenna is finally optimized through frequent screening, testing and adjusting, such that the selected metal structure enables the two electromagnetic waves with different wavelengths to generate resonance. Based on above two aspects, only one dual-frequency antenna can satisfy the work demands of the miniaturization and multi-mode of wireless electronic equipment.
Description
Technical field
The utility model relates to communication antenna, more particularly, relates to a kind of dual-band 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.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 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 antenna technology become a problem demanding prompt solution of contemporary electronics integrated system.
The utility model content
The technical problem that the utility model will solve is; The traditional antenna technology is difficult to carry out under the size-constrained prerequisite of portable terminal; And the above-mentioned requirement of system design that is difficult to satisfy the Modern Communication System low-power consumption of prior art; The utility model provides a kind of framework of breaking through the traditional antenna design, saves the somewhat complex design of impedance matching network, guarantees its miniaturization; It can be applied among the size-constrained portable terminal, and a kind of dual-band antenna that the aerial radiation area utilization is high, antijamming capability is strong.
A kind of dual-band 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; Said metal structure makes the electromagnetic wave resonance of two different-wavebands at least.
Further, the electromagnetic frequency band of said two kinds of different-wavebands is 2.4GHz-2.49GHz and 4.9GHz-5.9GHz.
Further, said dual-band antenna also comprises ground unit, and said ground unit is provided with several metallized through holes.
Further, the said ground unit said distributing point both sides that distribute symmetrically.
Further, said dual-band antenna also comprises a medium substrate, and said distributing point, ground unit, feeder line and a metal structure all are arranged on said medium substrate one surface.
Further, said medium substrate adopts the medium substrate of air, pottery or insulation function.
Further, said medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
Further, said macromolecular material is FR-4 and F
4Among the B any one.
Further, said dual-band antenna surface is provided with nonmetallic anti-oxidation film.
Further, said metal structure is the plane tabular shape.
The metal structure of the electromagnetic wave resonance that adopts the artificial electromagnetic material Design Theory to send as an envoy to make two different-wavebands at least, 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; Said metal structure and feeder line are carried out the signal coupling and formed the dual-band antenna in the utility model.Therefore said dual-band antenna can receive and send the electromagnetic wave that makes two different-wavebands at least simultaneously, uses the dual-band antenna of the utility model can satisfy the multi-mode working of multiband simultaneously; Minimizing wireless telecommunications electronic equipment in the market needs the situation of many antennas at the multi-mode working of multiband.In addition, metal structure is to design not limited by the physical length of half-wavelength, and therefore the own size according to electronic equipment can design corresponding big miniature antenna, to satisfy the miniaturization demand of electronic equipment.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below:
Fig. 1 is the dual-band antenna plane structure chart of the utility model one execution mode;
Fig. 2 depends on the structure chart on the medium substrate for dual-band antenna shown in Figure 1;
Fig. 3 is metal structure and the another kind of signal feed-in of the feeder line mode plane structure chart on the utility model dual-band antenna;
Fig. 4 is metal structure and the third feed-in mode plane structure chart of feeder line of the utility model dual-band antenna;
Fig. 5 is metal structure and the 4th kind of feed-in mode plane structure chart of feeder line of the utility model dual-band antenna;
Fig. 6 is the dual-band antenna plane structure chart of a complementary metal structure of dual-band antenna shown in Figure 1;
Fig. 7 is the part plane structure chart of the dual-band antenna of the utility model the 5th execution mode.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further description:
As shown in Figure 1, be the Double-frequency antenna structure sketch map of the utility model one execution mode.Dual-band antenna 10 in the utility model 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; Said metal structure 6 designs for adopting the artificial electromagnetic material theory, and promptly ultra material technology is theoretical; Said artificial electromagnetic material is meant the metal structure that sheet metal processing design (like modes such as employing etch processs) is become the electromagnetic definite shape of response; Said artificial electromagnetic material also can transform electromagnetic wave with high frequency electrical signal, makes the electromagnetic wave resonance of two kinds of different wave lengths at least 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 take place frequency.Thereby can design based on the fundamental characteristics of artificial electromagnetic material method for designing with metal structure, the medium substrate that makes metal structure depend on it has been formed a highly dispersed extraordinary electromagnetic material equivalently, thereby realizes the antenna that radiation characteristic is abundant.
In this execution mode, said metal structure 6 is axisymmetric plane tabular metal structure.Wherein metal structure 6 is processed 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.
Dual-band antenna 10 also comprises ground unit 8, and said ground unit 8 is provided with several metallized through holes 81.In this execution mode, said ground unit 8 said distributing point 5 both sides that distribute symmetrically.
Present embodiment utilizes the characteristic of artificial electromagnetic material; Be employed in the mode of engraving into metal structure on the sheet metal; The common electromagnetic material of forming an effective dielectric constant according to the chromatic dispersion of Lorentz lorentz's material resonances model of the medium that makes metal structure and depended on metal structure, thus design the shake antenna of frequency range of multi resonant.In this execution mode; Metal structure 6 as shown in Figure 1 makes 2.4GHz-2.49GHz and two frequency range electromagnetic waves of 4.9GHz-5.9GHz resonance; The length of said metal structure 6 and widely can do any adjustment (as shown in Figure 7) according to electronic equipment mechanism layout, but metal structure 6 planforms keep with present embodiment in consistent.
See also Fig. 2, said dual-band antenna 10 also comprises a medium substrate 7, and said distributing point 5, ground unit 8, feeder line 4 and a metal structure 6 all are arranged on said medium substrate 7 one surfaces; Said feeder line 4 adopts the said metal structure 6 of coupled modes feed-in.Said medium substrate 7 can adopt the medium substrate of air, pottery or insulation function.In the utility model, medium substrate 7 is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being processed by macromolecular material, can be macromolecular materials such as FR-4, F4B particularly.
Please in the lump with reference to figure 3, Fig. 4 and Fig. 5, signal feed-in mode can adopt multiple mode between said feeder line 4 and the metal structure 6.As shown in Figure 3, said feeder line 4 directly links to each other with said metal structure 6; And said feeder line 4 can be positioned at the optional position on the metal structure 6 with the connecting point position that links to each other of metal structure 6.Like Fig. 4, shown in 5, the end that feeder line 4 adopts the encirclement modes to be arranged at said metal structure 6 peripheries and feeder line 4 is arranged at metal structure 6 peripheral optional positions.
See also Fig. 6, according to the artificial electromagnetic material design theory, a metal structure 6 ' complementary with the metal structure of above-mentioned dual-band antenna 10 6, the resonance band of said metal structure 6 ' comprises 2.4GHz and two frequency ranges of 5.8GHz.Therefore based on this, metal structure 6 ' can be contained in resonance band and comprise in the dual-band antenna of 2.4GHz and 5.8GHz.
In the present embodiment,,, can adopt various manufactures as long as satisfy the design principle of the utility model about the processing and manufacturing of dual-band antenna 10.Prevailing method is to use the manufacturing approach of all kinds of printed circuit board (PCB)s (PCB), as the PCB that covers copper makes the processing request all can satisfy the utility model.Remove this processing mode, can also introduce other manufacturing process according to the needs of reality, but like 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 is meant that the accurate processing that utilizes PCB accomplishes the processing of chip micro-structural part, accomplishes other slave part with iron plate.Owing to adopt cheaply that copper product forms said metal structure 6, therefore expose in the air oxidizedly easily and dual-band antenna 10 resonance frequency shifts or performance are sharply descended, so the dual-band antenna surface is provided with nonmetallic anti-oxidation film.Because the main performance of the utility model all concentrates on the design of metal structure 6 topological sum chips part, therefore, the lead-in wire of feeder line 4 is less relatively to the radiation frequency influence of dual-band antenna 10.Based on these characteristics, dual-band antenna can be placed in any position of system, the complexity of the installation testing of simplification flexibly.
Above-mentioned dual-band antenna 10 directly can be used the wireless communication apparatus that comprises 2.4GHz and 5.8GHz; Said dual-band antenna 10 can directly be arranged on the pcb board of wireless communication apparatus, also can adopt interface that dual-band antenna 10 is connected with the pcb board of wireless communication apparatus through an interface.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model 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 the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (10)
1. a dijection frequency antenna is characterized in that said dijection antenna frequently comprises a distributing point, the feeder line that is connected with this distributing point and a metal structure; Feeder line and metal structure intercouple; Said metal structure makes the electromagnetic wave resonance of two different-wavebands at least.
2. dijection according to claim 1 is antenna frequently, it is characterized in that the electromagnetic frequency band of said two kinds of different-wavebands is 2.4GHz-2.49GHz and 4.9GHz-5.9GHz.
3. dijection according to claim 1 is antenna frequently, it is characterized in that, said dijection antenna frequently also comprises ground unit, and said ground unit is provided with several metallized through holes.
4. dijection according to claim 3 is antenna frequently, it is characterized in that the said ground unit said distributing point both sides that distribute symmetrically.
5. dijection according to claim 3 is antenna frequently, it is characterized in that, said dijection antenna frequently also comprises a medium substrate, and said distributing point, ground unit, feeder line and a metal structure all are arranged on said medium substrate one surface.
6. dijection according to claim 5 is antenna frequently, it is characterized in that, said medium substrate adopts the medium substrate of air, pottery or insulation function.
7. dijection according to claim 5 is antenna frequently, it is characterized in that said medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
8. dijection according to claim 7 is antenna frequently, it is characterized in that, said macromolecular material be among FR-4 and the F4B any one.
9. dijection according to claim 1 is antenna frequently, it is characterized in that, said dijection antenna surface frequently is provided with nonmetallic anti-oxidation film.
10. dijection according to claim 1 is antenna frequently, it is characterized in that said metal structure is the plane tabular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289233 CN202217784U (en) | 2011-08-10 | 2011-08-10 | Dual-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289233 CN202217784U (en) | 2011-08-10 | 2011-08-10 | Dual-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217784U true CN202217784U (en) | 2012-05-09 |
Family
ID=46017018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120289233 Expired - Lifetime CN202217784U (en) | 2011-08-10 | 2011-08-10 | Dual-frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202217784U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810737A (en) * | 2012-07-31 | 2012-12-05 | 深圳光启创新技术有限公司 | GPRS (general packet radio service) antenna and electronic device |
| CN103022625A (en) * | 2012-11-20 | 2013-04-03 | 深圳光启创新技术有限公司 | Harmonic oscillator as well as cavity filter and electromagnetic wave equipment thereof |
| CN103779655A (en) * | 2012-10-22 | 2014-05-07 | 深圳光启创新技术有限公司 | Dual-band antenna apparatus |
-
2011
- 2011-08-10 CN CN 201120289233 patent/CN202217784U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810737A (en) * | 2012-07-31 | 2012-12-05 | 深圳光启创新技术有限公司 | GPRS (general packet radio service) antenna and electronic device |
| CN102810737B (en) * | 2012-07-31 | 2017-09-19 | 深圳光启创新技术有限公司 | A kind of GPRS antenna and electronic installation |
| CN103779655A (en) * | 2012-10-22 | 2014-05-07 | 深圳光启创新技术有限公司 | Dual-band antenna apparatus |
| CN103779655B (en) * | 2012-10-22 | 2018-07-06 | 深圳光启创新技术有限公司 | A kind of double-frequency antenna unit |
| CN103022625A (en) * | 2012-11-20 | 2013-04-03 | 深圳光启创新技术有限公司 | Harmonic oscillator as well as cavity filter and electromagnetic wave equipment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN GUANGQI INTELLIGENT PHOTONICS TECHNOLOGY Free format text: FORMER OWNER: SHENZHEN KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Effective date: 20150708 Free format text: FORMER OWNER: SHENZHEN KUANG-CHI INNOVATION TECHNOLOGY CO., LTD. Effective date: 20150708 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150708 Address after: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Patentee after: Shenzhen Guang Qi intelligent photonic Technology Co., Ltd. Address before: 518000 Nanshan District City, Guangdong province high tech Zone in the middle of a high tech building, No. 9 software building Patentee before: Shenzhen Kuang-Chi Institute of Advanced Technology Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20191121 Address after: 311100 room 1101, building 14, No. 1008, Xiangxiang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Institute of artificial intelligence Address before: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Patentee before: Shenzhen Guang Qi intelligent photonic Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |