CN202231150U - Wireless access device - Google Patents
Wireless access device Download PDFInfo
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- CN202231150U CN202231150U CN 201120360735 CN201120360735U CN202231150U CN 202231150 U CN202231150 U CN 202231150U CN 201120360735 CN201120360735 CN 201120360735 CN 201120360735 U CN201120360735 U CN 201120360735U CN 202231150 U CN202231150 U CN 202231150U
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- antenna
- wireless access
- access device
- metal structure
- data storage
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Abstract
The utility model provides a wireless access device, comprising a central processing unit, a data storage unit and a radio frequency unit, wherein the data storage unit and the radio frequency unit are connected with the central processing unit; the radio frequency unit comprises an antenna; the antenna comprises a medium substrate, a feed point disposed on one surface of the medium substrate, a feed line connected with the feed point and a metal structure; and the feed line is coupled with the metal structure. The antenna of the wireless access device provided by the utility model may be internally or externally disposed, and the wireless access device applying the antenna can simultaneously accept or transmit two or more electromagnetic waves with different wavebands, so as to satisfy a mode demand that a plurality of working frequency bands exist in single-frequency mode and different working frequency bands simultaneously work in multi-frequency mode, thereby changing the phenomenon that the wireless access device needs a plurality of antennas while working in different wavebands; and the physical dimensions of the metal structure of the antenna are not limited by the physical length of half wavelength, so as to satisfy the demands that the wireless access device is miniaturized and the antenna is internally disposed.
Description
Technical field
The utility model belongs to domain of communication equipment, is specifically related to a kind of wireless access device.
Background technology
Development along with wireless communication technique; Wireless telecommunications system has had increasingly high requirement; In order to satisfy the requirement of communication, existing various wireless access devices adopt external antenna basically, greatly the surplus energy of the industrial design of limits product and mechanism design performance; And external antenna also need design impedance matching connector and mechanism's module of adaptation; These connectors and mechanism's module have almost accounted for the cost of entire antenna more than 90 percent, impel the rising of whole wireless access device price so the entire antenna cost rises, and the built-in mode of antenna will greatly save connector and mechanism's module cost.
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 existing 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.
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., need design more in the complicated electronic system at some at 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.Thereby, the technical bottleneck that the function of antenna, size become the wireless access device reduced volume, reduce cost.
Summary of the invention
In order to solve the problem that exists in the existing wireless access device; The utility model provides a kind of wireless access device; Through using the antenna of ultra material technology design; Under the prerequisite that satisfies the communication appliance performance requirement, can freely select antenna built-in and external, to achieve these goals, the utility model adopts following technical scheme:
A kind of wireless access device; Comprise: CPU, data storage cell and radio frequency unit; Said data storage cell is connected with said CPU with said radio frequency unit; Said radio frequency unit comprises an antenna, and said antenna comprises a medium substrate and the distributing point, the feeder line that is connected with said distributing point and the metal structure that are arranged at said medium substrate one surface; Said feeder line and said metal structure intercouple.
Further, said metal structure is that sheet metal forms through engraving out the groove topological structure.
Further, said 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, groove width equates with the spacing of adjacent slot in the groove topological structure in the said groove topological structure.
Further, said medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
Further, said antenna makes a kind of electromagnetic wave resonance of wave band at least; The frequency band of said electromagnetic wave resonance wave band comprises 2.4GHz-2.49GHz and 5.72GHz-5.85GHz at least.
Further, said data storage cell stores WIFI or WLAN communications protocol.
Further, said data storage cell comprises read-only memory and random access memory.
The wireless access device of the utility model can freely select antenna built-in or external; And the electromagnetic wave of two or more different wave band can accepted or send to the wireless access device of using this antenna simultaneously; The mode requirement that the different operating frequency range is worked simultaneously when having a plurality of working frequency range, multifrequency in the time of can satisfying single-frequency has changed existing wireless access device needs many antennas when different frequency range is worked phenomenon.Antenna in the utility model wireless access device is to use the ultra material technology design perhaps antenna of the electromagnetic wave resonance of more different-wavebands of a wave band, two of sening as an envoy to; Determine the physical size of the metal structure size of this antenna volume not limited by the physical length of half-wavelength; Carry out the signal coupling with feeder line and can obtain the antenna in the utility model; Can go out corresponding antenna according to the size design of wireless telecommunications system own, satisfy wireless access device miniaturization, the built-in demand of antenna.
Description of drawings
Fig. 1 is the structural representation of the utility model wireless access device;
Fig. 2 is the structural representation of the embodiment 1 of the utility model antenna of being applied to wireless access device;
Fig. 3 is the structural representation of the embodiment 2 of the utility model antenna of being applied to wireless access device;
Fig. 4 is the enlarged diagram of metal structure among the embodiment 2 of the utility model antenna of being applied to wireless access device;
Fig. 5 is the S parameters simulation figure of antenna shown in Figure 2;
Fig. 6 is an antenna operation shown in Figure 2 in 2.4,2.44, E direction far field simulation result figure during 2.48GHz;
Fig. 7 is an antenna operation shown in Figure 2 in 2.4,2.44, H direction far field simulation result figure during 2.48GHz;
Fig. 8 is an antenna operation shown in Figure 2 in 5.725,5.8, E direction far field simulation result figure during 5.85GHz;
Fig. 9 is an antenna operation shown in Figure 2 in 5.725,5.8, H direction far field simulation result figure during 5.85GHz.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done a step explanation.
As shown in Figure 1; This wireless access device comprises CPU, data storage cell, radio frequency unit, power subsystem and auxiliary unit, and power module provides CPU work required electric energy, and CPU can be microcontroller or SOC; It also can be the little process chip of RISC; Store communications protocol in the data storage cell, such as communications protocol such as WIFI, WLAN, data storage cell can further be divided into read-only memory and random access memory; Comprise antenna in the radio frequency unit, auxiliary unit can be one or more in man-machine interface, display, power supply indicator or the status indicator lamp.
CPU is connected with data memory module with radio-frequency module; Central processing module is done exchanges data and processing through antenna in the radio-frequency module and outside; CPU can be transferred communications protocol in the data storage cell; The go forward side by side storage or the buffer memory of line data, auxiliary unit makes the onboard wireless access device have some complementary functions, for example shows the indicator light of connection status or shows the power supply indicator etc. of electric power thus supplied.
As shown in Figure 2, be applied to the structural representation of antenna 10 of embodiment 1 of the antenna of wireless access device for the utility model.Antenna 10 in the present embodiment comprises medium substrate 7 and is arranged on the distributing point 5 on the medium substrate 7, the feeder line 4 that is connected with this distributing point 5, the metal structure 6 of plane tabular.Wherein, feeder line 4 intercouples with metal structure 6; Metal structure 6 is that sheet metal forms through engraving out groove topological structure 61; Remove the material of groove topological structure 61 correspondences when engraving; Remaining sheet metal is metal structure 6, after engraving out groove topological structure 61, demonstrates the metal routing 62 that is included in the metal structure 6 on the sheet metal; The spacing of adjacent slot is the width of metal routing 62 in the groove topological structure 61, and the groove width of groove topological structure 61 equates with the width of metal routing 62, and is 0.15mm; Medium substrate 7 can be processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material, preferably, processes by macromolecular material, and can be macromolecular materials such as FR-4, F4B particularly.
In the present embodiment, metal structure 6 is axisymmetric plane tabular.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 6 also can be copper and silver combination.
Like Fig. 3, embodiment 2 antenna structure views of the antenna that is applied to wireless access device for the utility model shown in Figure 4 and the enlarged diagram of the metal structure among this embodiment 2.The metal structure 6 that antenna 10 in the present embodiment 2 comprises medium substrate 7 and is arranged on the distributing point 5 on the medium substrate 7, the feeder line 4 that is connected with this distributing point 5, plane tabular is with all identical described in the embodiment 1; Difference is also to comprise ground unit 8, and ground unit 8 is provided with the through hole 81 of number of metalization; Ground unit 8 said distributing point 5 both sides that distribute symmetrically, the selection of medium substrate 7 is identical with embodiment shown in Figure 21.
Signal feed-in mode can have multiple between feeder line 4 and the metal structure 6.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.The end that feeder line 4 adopts the encirclement mode to be arranged at said metal structure 6 peripheries and feeder line 4 is arranged at metal structure 6 peripheral optional positions.
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 substrate that makes metal structure and depended on metal structure, thus design the shake antenna of frequency range of multi resonant.In this execution mode; Antenna as shown in Figure 3 makes 2.4GHz-2.49GHz and two frequency range electromagnetic waves of 5.72GHz-5.85GHz resonance; The length of metal structure 6 and widely can do any adjustment according to the communication apparatus organization distribution; But metal structure 6 planforms keep with present embodiment in consistent getting final product; This antenna can be used for the communication apparatus of single-frequency 2.4GHz-2.49GHz or 5.72GHz-5.85GHz frequency range, also can be used for the communication apparatus of double frequency 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency range.
Be illustrated in figure 5 as the S parameters simulation figure of the utility model embodiment 2; The antenna that the figure shows embodiment 2 has respectively at 2.4GHz and 5.8018GHz-loss of 15.426dB and-19.184dB; In desired 2.4GHz-2.49GHz of the utility model and 5.72GHz-5.85GHz frequency band, all have-loss below the 10dB; Show that the utility model antenna can work separately in 2.4GHz-2.49GHz or 5.72GHz-5.85GHz frequency band; Also can in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band, work simultaneously, and satisfy in the wireless telecommunications system requirement antenna.
Fig. 6, Fig. 7, Fig. 8 and Fig. 9 show respectively the utility model embodiment 2 antenna operations in 2.4,2.44, when 2.48GHz and 5.725,5.8,5.85GHz respectively at vertical plane (E-Plane) and horizontal plane (H-Plane) direction far field simulation result figure, the polarization effect of antenna that in this result, can observe the utility model is not second to existing antenna and meet application standard.
Antenna is based on the artificial electromagnetic material art designs and forms in the utility model; Artificial electromagnetic material is meant the topological metal structure of sheet metal being engraved into given shape; And the topological metal structure of said given shape is arranged on certain dielectric constant and the magnetic permeability base material and the equivalent extraordinary electromagnetic material of processing and manufacturing, its performance parameter depends primarily on the topological metal structure of the given shape of its sub-wavelength.In resonance band, artificial electromagnetic material embodies the dispersion characteristics of height usually, in other words, the impedance of antenna, holds perception, equivalent dielectric constant and magnetic permeability along with violent variation can take place frequency.Thereby can adopt the artificial electromagnetic material technology that the fundamental characteristics of above-mentioned antenna is transformed, the medium substrate that makes metal structure depend on it has been formed a highly dispersed extraordinary electromagnetic material equivalently, thereby realizes the new antenna that radiation characteristic is abundant.
In the utility model,,, can adopt various manufactures as long as satisfy the design principle of the utility model about the processing and manufacturing of 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 groove topological structure, accomplishes other slave part with iron plate.Because the main performance of the utility model all concentrates on the design of metal structure 6 groove topological structures 61, therefore, the lead-in wire of feeder line 4 is less relatively to the radiation frequency influence of antenna 10.Based on these characteristics, antenna can be placed in any position of system, the complexity of the installation testing of simplification flexibly.
Above-mentioned antenna 10 is applied in the wireless access device that comprises 2.4GHz and 5.8GHz; This antenna 10 can directly be arranged on the pcb board of wireless access device; Make antenna 10 be built in the wireless access device of using this antenna; Also can adopt interface that antenna 10 is connected with the pcb board of wireless access device through an interface, make antenna 10 external with respect to the wireless access device of using this antenna.
More than be the description to the utility model embodiment, the change that does not break away under the utility model aim all is within the protection of the utility model.
Claims (10)
1. wireless access device; Comprise: CPU, data storage cell and radio frequency unit; Said data storage cell is connected with said CPU with said radio frequency unit; Said radio frequency unit comprises an antenna, and said antenna comprises a medium substrate and the distributing point, the feeder line that is connected with said distributing point and the metal structure that are arranged at said medium substrate one surface; Said feeder line and said metal structure intercouple.
2. wireless access device according to claim 1 is characterized in that, said metal structure is that sheet metal forms through engraving out the groove topological structure.
3. wireless access device according to claim 1 is characterized in that said antenna also comprises ground unit, and said ground unit is provided with several metallized through holes.
4. wireless access device according to claim 3 is characterized in that, the said ground unit said distributing point both sides that distribute symmetrically.
5. wireless access device according to claim 2 is characterized in that, groove width equates with the spacing of adjacent slot in the groove topological structure in the said groove topological structure.
6. according to each described wireless access device of claim 1-5, it is characterized in that said medium substrate is processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
7. wireless access device according to claim 1 is characterized in that, said antenna makes a kind of electromagnetic wave resonance of wave band at least.
8. wireless access device according to claim 7 is characterized in that, the frequency band of said electromagnetic wave resonance wave band comprises 2.4GHz-2.49GHz and 5.72GHz-5.85GHz at least.
9. wireless access device according to claim 1 is characterized in that, said data storage cell stores WIFI or WLAN communications protocol.
10. wireless access device according to claim 1 is characterized in that said data storage cell comprises read-only memory and random access memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120360735 CN202231150U (en) | 2011-09-23 | 2011-09-23 | Wireless access device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120360735 CN202231150U (en) | 2011-09-23 | 2011-09-23 | Wireless access device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231150U true CN202231150U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120360735 Expired - Lifetime CN202231150U (en) | 2011-09-23 | 2011-09-23 | Wireless access device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022655A (en) * | 2011-09-23 | 2013-04-03 | 深圳光启高等理工研究院 | Wireless access device |
-
2011
- 2011-09-23 CN CN 201120360735 patent/CN202231150U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022655A (en) * | 2011-09-23 | 2013-04-03 | 深圳光启高等理工研究院 | Wireless access device |
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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: 20150722 Free format text: FORMER OWNER: SHENZHEN KUANG-CHI INNOVATION TECHNOLOGY CO., LTD. Effective date: 20150722 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150722 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. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |