CN103036021B - Wireless backhaul device - Google Patents
Wireless backhaul device Download PDFInfo
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- CN103036021B CN103036021B CN201110299659.8A CN201110299659A CN103036021B CN 103036021 B CN103036021 B CN 103036021B CN 201110299659 A CN201110299659 A CN 201110299659A CN 103036021 B CN103036021 B CN 103036021B
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Abstract
The invention relates to a wireless backhaul device which comprises antennas. The antennas are metamaterial antennas which comprise a dielectric substrate, a feeding point which is arranged at one surface of the dielectric substrate, a feeder connected with the feeding point and a metal structure. The feeder and the metal structure are intercoupled and the metamaterial antennas are used for sending and receiving electromagnetic wave signals. The wireless backhaul device using built-in metamaterial antennas designs a metamaterial antenna which can resonate electromagnetic wave of one wave band, two wave bands or more different wave bands based on the metamaterial antenna technology, which decides the physical size of the metal structure size of the antenna size without being limited by the physical length of half-wavelength and designs corresponding antenna according to the size of the wireless backhaul device itself, thereby meeting wireless communication requirements of miniaturization, built-in antenna, remote and high gain. Moreover, the wireless backhaul device can transmit signals of high speed, ultra wide band and high-capacity through built-in metamaterial antenna.
Description
Technical field
The present invention relates to wireless backhaul equipment, especially relate to a kind of application wireless backhaul within a wireless communication network and set
Standby.
Background technology
In cordless communication network, for example, WiMAX network (World interoperability Microwave
Access, World Interoperability for Microwave Access, WiMax, described WiMAX network is a kind of wireless city based on IEEE802.16 series standard
Domain net) in, at the deployment initial stage, by mainly for developing country, urban periphal defence and network infrastructure not very perfect area
Domain.There the number of users at initial stage is limited, and service application type is single, relatively low to the demand of network capacity.Now how sharp
Make the extensive covering of the rapid realization of cordless communication network with inexpensive network coverage technology, quickly dominating the market is that can it walk
To successful key.Wherein, WiMAX technology causes the concern of each side as " access of Hypomobility broadband IP " scheme.How
Realize the large scale deployment at the commercial initial stage for the WiMAX using related low-cost technologiess, this becomes on a large scale should of WiMAX technology
Key factor.
A key issue realizing above-mentioned cordless communication network large-scale application is how quickly to arrange net and reduces net
Network construction cost.Because wireless backhaul avoids the problems such as wired high cost arranged net, difficult wiring, therefore increasingly transported
The attention of battalion business.Using WiMAX base station Radio Resource itself, realize wireless backhaul links and can more put ground solve problem.
The existing base station with wireless backhaul links is usually provided with the antenna for transceiving radio frequency signal, and described antenna gain is little,
Transmission range is short, thus can not meet needs.
Content of the invention
In order to solve problem present in existing wireless backhaul equipment, the invention provides the nothing that a kind of wireless video accesses
Line upstream device, by applying high performance Meta Materials built-in aerial technology, can meet wireless telecommunications system miniaturization, in antenna
Put, the demand of remote and high-gain, the present invention employs the following technical solutions：
A kind of wireless backhaul equipment includes antenna, and described antenna is Super-material antenna, and described Super-material antenna includes Jie
Feeder line and metal knot that matter substrate is connected with described distributing point with the distributing point being arranged at described medium substrate one surface
Structure；Described feeder line is intercoupled with described metal structure, and described Super-material antenna is used for transceiving electromagnetic ripple signal.
Further, described metal structure is that sheet metal forms through engraving out groove topological structure.
Further, described Super-material antenna also includes ground unit, and described ground unit is symmetrically distributed described feed
Point both sides；Several metallized through holes are provided with described ground unit.
Further, described Super-material antenna also includes a reference ground, and described reference ground is included positioned at described medium substrate
The first reference ground unit on two surfaces relatively and the second reference ground unit, described first reference ground unit makes the one of described feeder line
End forms microstrip line.
Further, described first reference ground unit and the second reference ground unit are electrically connected to each other.
Further, described medium substrate is provided with some plated-through holes, described first reference ground unit and described the
Two reference ground units pass through described plated-through hole and realize electrical connection.
Further, described first reference ground unit is provided with the first metal covering unit being electrically connected to each other and the second metal
Face unit, described first metal covering unit is relative with an end position of described feeder line, so that one end of described feeder line is formed described micro-
Band wire；Described second reference ground unit is provided with the 3rd metal covering unit, described 3rd metal covering unit and described second metal
Face cell position is relatively.
Further, described medium substrate is located at and opens up at described second metal covering unit and described 3rd metal covering unit
There are some plated-through holes, described second metal covering unit and described 3rd metal covering unit are electrically connected by described plated-through hole
Connect.
Further, described second reference ground unit also includes the 4th metal covering unit, described 4th metal covering unit position
In the side of described feeder line one end, and it is located on the bearing of trend of described feeder line, described first metal covering unit and the described 4th
Metal covering unit is electrically connected by described plated-through hole.
Further, the resonance band of described Super-material antenna at least includes 2.4GHz-2.49GHz and 5.72GHz-
5.85GHz.
For hinge structure, wireless backhaul equipment of the present invention adopts built-in Super-material antenna, but is based on super material
Material antenna technology designs the Super-material antenna of the electromagnetism wave resonance of send as an envoy to a wave band, two or more different-waveband, determines
The physical size of the metal structure size of this antenna volume is not limited by the physical length of half-wavelength, can be set according to wireless backhaul
Itself size design standby goes out corresponding antenna, meets the demand of wireless telecommunications system miniaturization, built-in antenna and high-gain.Separately
Outward, by built-in Super-material antenna, it is possible to achieve at a high speed, ultra broadband, jumbo signal wirelessly transmit.
Brief description
Fig. 1 is the theory diagram of wireless backhaul equipment of the present invention；
Fig. 2 is the front view of the antenna first embodiment in wireless backhaul equipment of the present invention；
Fig. 3 is antenna rearview shown in Fig. 2；
Fig. 4 is the antenna first embodiment S parameter analogous diagram of the present invention；
Fig. 5 is the front view of the antenna second embodiment in wireless backhaul equipment of the present invention；
Fig. 6 is the front view of antenna the 3rd embodiment in wireless backhaul equipment of the present invention；
Fig. 7 is the metal structure enlarged drawing on second and third embodiment of inventive antenna；
Fig. 8 is antenna the 3rd embodiment S parameter analogous diagram of the present invention；
Fig. 9 be the embodiment of the present invention 2 operate in 2.4,2.44,2.48GHz when E direction far field simulation result figure；
Figure 10 be the embodiment of the present invention 2 operate in 2.4,2.44,2.48GHz when H direction far field simulation result figure；
Figure 11 be the embodiment of the present invention 2 operate in 5.725,5.8,5.85GHz when E direction far field simulation result figure；
Figure 12 be the embodiment of the present invention 2 operate in 5.725,5.8,5.85GHz when H direction far field simulation result figure.
Specific embodiment
With specific embodiment, wireless backhaul equipment of the present invention is further described below in conjunction with the accompanying drawings.
Refer to Fig. 1, it is the theory diagram of the wireless backhaul equipment in the present invention.Described wireless backhaul equipment 100 wraps
Include Super-material antenna 10 and wireless backhaul equipment body 11.Described Super-material antenna 10 and described wireless backhaul equipment body 11 electricity
Connect, and be used for transceiving electromagnetic ripple signal.In the present invention, described wireless backhaul equipment 100 includes but is not limited to base station, exchange
Machine etc..
In wireless backhaul equipment of the present invention, antenna is to be formed based on artificial electromagnetic material Technology design, and artificial electromagnetic material is
Refer to sheet metal is engraved into the topological metal structure of given shape, and the topological metal structure of described given shape is arranged at one
Determine the equivalent special type electromagnetic material of processing and manufacturing on dielectric constant and pcrmeability base material, it is sub- that its performance parameter depends primarily on it
The topological metal structure of the given shape of wavelength.In resonance band, artificial electromagnetic material generally embodies the dispersion characteristics of height,
In other words, perceptual, the equivalent dielectric constant of the impedance of antenna, appearance and pcrmeability can occur violent change with frequency.Thus
Using artificial electromagnetic material technology, the fundamental characteristics of above-mentioned antenna can be transformed so that the medium that depends on it of metal structure
Substrate equally constitutes a highly dispersed special type electromagnetic material, thus realizing the new antenna that radiation characteristic is enriched.With
Under in employing wireless upstream device several embodiments are discussed in detail：
First embodiment
See also Fig. 2 and Fig. 3, described Super-material antenna 10 includes medium substrate 1, metal structure 2, feeder line 3 and ginseng
Examine ground 41,42, described medium substrate 1 be in rectangular tabular, its can by high molecular polymer, pottery, ferroelectric material, ferrite material or
The materials such as ferromagnetic material are made.In the present embodiment, the material of described medium substrate 1 is made using glass material (FR4), thus
Not only low cost, and can ensure to keep good antenna operating characteristics in different operating frequencies.
Described metal structure 2, feeder line 3 and reference ground 41,42 are respectively placed in the two relative surfaces of described medium substrate 1
On, described metal structure 2, feeder line 3 and reference ground 41,42 and described medium substrate 1 form Super-material antenna, described Meta Materials sky
The performance of line depends on described metal structure 2, and in resonance band, Meta Materials generally embody the dispersion characteristics of height, i.e. its resistance
The dielectric constant anti-, appearance is perceptual, equivalent and pcrmeability can occur violent change with frequency, thus by changing described metal
Structure 2 and the fundamental characteristics of medium substrate 1, just make described metal structure 2 equally form one according to Lip river with medium substrate 1
Human relations hereby material resonances model highly dispersed special type electromagnetic material.
Refer to Fig. 4, the working frequency range of the Super-material antenna in the present embodiment is 2.4GHZ～2.49GHZ and 5.72GHZ
～5.85GHZ, the gain of this two frequency range above-mentioned is respectively up to 3.58dBi and 3.14dBi.It is understood that can arrange super
10 response frequencies of material antenna are 2.4GHZ～2.49GHZ frequency range, i.e. single-band antenna.
Described feeder line 3 is arranged on the side of described metal structure 2, and the length direction along described metal structure 2 extends,
It is intercoupled with described metal structure 2, and wherein, one end bending of described feeder line 3 extends to described metal structure 2 end one
Side.Additionally, as needed capacitive electrical element can be embedded in the space between described feeder line 3 and metal structure 2, by embedded
Capacitive electrical element regulation feeder line 3 is coupled with the signal between metal structure 2, by formula：It is known that it is electric
Square being inversely proportional to of the size of capacitance and operating frequency, so when the operating frequency needing is relatively low operating frequency, Ke Yitong
Cross and be appropriately embed the realization of capacitive electrical element.Add capacitive electrical element capacitance value range generally between 0-2pF, no
Cross and be likely to the scope beyond 0-2pF with the embedded capacitance of the change of operating frequency of antenna.
Described reference ground is located at the side of described feeder line 3, make described feeder line 3 positioned at the one of described metal structure 2 end
End forms microstrip line 31.In the present embodiment, described reference ground includes the first reference ground unit 41 and the second reference ground unit 42,
Described first reference ground unit 41 and the second reference ground unit 42 are respectively positioned at two surfaces relatively of described medium substrate 1.Described
First reference ground unit 41 is provided with the first metal covering unit 411 being electrically connected to each other and the second metal covering unit 412.Described
Two reference ground units 42 and described feeder line 3 are located at the same side of described medium substrate 1, and are provided with the 3rd metal covering unit 421
And the 4th metal covering unit 422.
Described first metal covering unit 411 is relative with described feeder line 3 position, makes tying positioned at described metal of described feeder line 3
One end of structure 2 end forms described microstrip line 31, and that is, described reference ground is virtually.Described second metal covering unit 412 and institute
State the 3rd metal covering unit 421 position relatively.Described 3rd metal covering unit 421 is located at one end of described metal structure 2, described
3rd metal covering unit 421 is in long side tabular, and identical with the bearing of trend of described feeder line 3.Described medium substrate 1 is located at institute
State and at the second metal covering unit 412 and described 3rd metal covering unit 421, offer some plated-through holes 5, described second gold medal
Genus face unit 412 is electrically connected by described plated-through hole 5 with described 3rd metal covering unit 421.
Described 4th metal covering unit 422 is located at the side of described feeder line 3 one end, and is located at the extension side of described feeder line 3
Upwards.If described medium substrate 1 is located at offering at described first metal covering unit 411 and described 4th metal covering unit 422
Dry plated-through hole 5, described first metal covering unit 411 passes through described plated-through hole 5 with described 4th metal covering unit 422
Electrical connection.Described microstrip line 31 is formed by one end of the first metal covering unit 411 and described feeder line 3, thus outside can be reduced
The signal interference to transmission on described feeder line 3 for the signal, improves antenna gain, realizes preferable impedance matching, material-saving, become
This is low.Pass through cleverly position setting between described first metal covering unit 411 to the 4th metal covering unit 422, thus make institute
State reference ground and take less space, just realize larger area.Additionally, by arranging described plated-through hole 5, thus can enter
One step improves the area of described reference ground.
In sum, High-gain metamaterial antenna of the present invention is passed through critically to control topographic morphologies and the cloth of metal structure 2
The described microstrip line 31 of office, obtains effective dielectric constant and the pcrmeability distribution of needs, enables the antenna to realize in working frequency range
Preferably impedance matching, expeditiously completes energy conversion, and obtains preferable radiation pattern, it takies small volume, to environment
Require low, high gain, applied range, be suitable for the built-in aerial of wireless backhaul equipment.
Second embodiment
As shown in figure 5, the structural representation of the Super-material antenna 10 for the embodiment of the present invention.Meta Materials in the present embodiment
Antenna 10 includes medium substrate 7 and the distributing point 5 that is arranged on medium substrate 7 is connected with this distributing point 5 feeder line 4, flat
The metal structure 6 of panel shape.Wherein, feeder line 4 and metal structure 6 intercouple；Metal structure 6 is that sheet metal is opened up through engraving out groove
Flutter structure 61 to form, when engraving, remove the corresponding material of groove topological structure 61, remaining sheet metal is metal structure 6, is engraving
After carving groove topological structure 61, sheet metal presents including the metal routing 62 in metal structure 6；In groove topological structure 61
The spacing of adjacent slot is the width of metal routing 62, and the groove width of groove topological structure 61 is equal with the width of metal routing 62, and
It is 0.15mm；Medium substrate 7 can be made up of ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material,
Preferably, it is made up of macromolecular material, can be specifically FR-4, F4B Polymer material.
In the present embodiment, metal structure 6 is axisymmetric plane tabular.Wherein metal structure 6 is copper or ag material system
Become.It is preferably copper, cheap, conduct electricity very well.In order to realize more preferable impedance matching, metal structure 6 is alternatively copper and silver-colored group
Close.
Refer to Fig. 6, be third embodiment of the invention front view, the 3rd embodiment is existed with second embodiment difference
In also including ground unit 8, ground unit 8 is provided with some metallized through holes 81；Ground unit 8 is symmetrically distributed described
Distributing point 5 both sides, the selection of medium substrate 7 is same as Example 1.Fig. 7 show second embodiment and the 3rd embodiment
Metal structure enlarged drawing.It is to be understood that between feeder line 4 and metal structure 6 signal feed-in mode can have multiple.Institute
State feeder line 4 to be directly connected with described metal structure 6；And described feeder line 4 may be located at gold with the connecting point position that is connected of metal structure 6
Belong to the optional position in structure 6.Feeder line 4 is arranged at described metal structure 6 periphery and the end setting of feeder line 4 using encirclement mode
In the peripheral optional position of metal structure 6.
The present embodiment utilizes the characteristic of artificial electromagnetic material, by the way of engraving into metal structure on sheet metal, makes
Metal structure and the medium substrate that depended on metal structure collectively constitute an effective dielectric constant according to Lorentz lorentz's material
The electromagnetic material of resonance model dispersion, thus design the antenna of multi-resonant frequency range.In the present embodiment, second embodiment
Make two frequency range electromagnetism wave resonances of 2.4GHz-2.49GHz and 5.72GHz-5.85GHz with the antenna shown in the 3rd embodiment,
The length of metal structure 6 and width can do any adjustment according to communication apparatus organization distribution, but metal structure 6 planform is protected
Hold consistent with the present embodiment, this unipole antenna can be used for single-frequency 2.4GHz-2.49GHz or 5.72GHz-5.85GHz
The communication apparatus of frequency range is it is also possible to be used for the communication apparatus of double frequency 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency range.
It is illustrated in figure 8 the S parameter analogous diagram of second embodiment of the invention and the 3rd embodiment, the figure shows
The antenna of two embodiments and the 3rd embodiment is respectively provided with -15.426dB and -19.184dB in 2.4GHz and 5.8018GHz
Loss, be respectively provided with below -10dB in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band of the presently claimed invention
Loss, show that inventive antenna can individually work in 2.4GHz-2.49GHz or 5.72GHz-5.85GHz frequency band,
Can work in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band simultaneously, and meet in wireless backhaul equipment
Requirement to Super-material antenna 10.
Fig. 9, Figure 10, Figure 11 and Figure 12 respectively illustrate second embodiment of the invention and the 3rd embodiment Meta Materials sky
Line 10 operate in 2.4,2.44,2.48GHz and 5.725,5.8,5.85GHz when respectively in vertical plane (E-Plane) and level
Plane (H-Plane) direction far field simulation result figure, is able to observe that the polarization of the Super-material antenna of the present invention in here result
Effect is no less than existing antenna and meets application standard.
In the present invention, with regard to the processing and manufacturing of Super-material antenna 10, as long as meeting the design principle of the present invention, can adopt
Various manufactures.Most common method is the manufacture method using all kinds of printed circuit board (PCB)s (PCB), and the PCB such as covering copper manufactures
The processing request of the present invention all can be met.Except this processing mode, other manufacturing process can also be introduced according to the actual needs, such as
Conductive silver paste ink processing mode, all kinds of can the flexible PCB processing of deformable element, the processing mode of iron plate antenna and iron plate with
The processing mode of PCB combination.Wherein, iron plate and PCB Combined machining mode refer to complete groove topology using the accurate processing of PCB
The processing of structure, completes other slave parts with iron plate.Due to described metal structure 6 is formed using inexpensive copper product,
Therefore it is oxidized easily in exposure air and so that Super-material antenna 10 resonance frequency shift or performance is drastically declined, therefore one pole
Nonmetallic anti-oxidation film is provided with antenna surface.Open up because the main performance of the present invention all concentrates on metal structure 6 groove
Flutter the design of structure 61, therefore, the lead of feeder line 4 is relatively small on the radiation frequency impact of Super-material antenna 10.Based on this
Feature, unipole antenna can be flexibly placed in any position of system, the complexity installing test of simplification.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned concrete
Embodiment, above-mentioned specific embodiment is only schematically, rather than restricted, those of ordinary skill in the art
Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, also can make a lot
Form, these belong within the protection of the present invention.
Claims (9)
1. a kind of wireless backhaul equipment, including antenna it is characterised in that described antenna is Super-material antenna, described Meta Materials sky
The feeder line that line is included a medium substrate and is connected with described distributing point with the distributing point being arranged at described medium substrate one surface
And a metal structure；Described feeder line is intercoupled with described metal structure, and described Super-material antenna is used for transceiving electromagnetic ripple signal；
Wherein, described Super-material antenna also includes a reference ground, and described reference ground is included positioned at described medium substrate relative to two tables
The first reference ground unit on face and the second reference ground unit, described first reference ground unit be provided with the first metal covering unit and
Second metal covering unit, described second reference ground unit is provided with the 3rd metal covering unit and the 4th metal covering unit；
Wherein, described 3rd metal covering unit, described 4th metal covering unit, described feeder line, described metal structure are arranged on institute
State the same surface of medium substrate, and described 3rd metal covering unit be located at described metal structure one end and with described feeder line
Bearing of trend identical, described 4th metal covering unit be located at described feeder line one end side and positioned at described feeder line extension side
Upwards；
Wherein, described first metal covering unit, described second metal covering unit are arranged on the same surface of described medium substrate,
And described first metal covering unit is relative with described feed position, described second metal covering unit and described 3rd metal covering unit
Position is relatively.
2. wireless backhaul equipment according to claim 1 is it is characterised in that described metal structure is sheet metal through engraving out
Groove topological structure forms.
3. wireless backhaul equipment according to claim 1 is it is characterised in that described first reference ground unit makes described feeder line
One end formed microstrip line.
4. wireless backhaul equipment according to claim 3 it is characterised in that：Described first reference ground unit and the second reference
Ground unit is electrically connected to each other.
5. wireless backhaul equipment according to claim 4 it is characterised in that：Described medium substrate is provided with some metallization
Through hole, described first reference ground unit passes through described plated-through hole with described second reference ground unit and realizes electrically connecting.
6. wireless backhaul equipment according to claim 5 it is characterised in that：Described first reference ground unit is provided with mutually
One end position of the first metal covering unit of electrical connection and the second metal covering unit, described first metal covering unit and described feeder line
Relatively, one end of described feeder line is made to form described microstrip line.
7. wireless backhaul equipment according to claim 6 it is characterised in that：Described medium substrate is located at described second metal
Some plated-through holes are offered, described second metal covering unit and the described 3rd at face unit and described 3rd metal covering unit
Metal covering unit is electrically connected by described plated-through hole.
8. wireless backhaul equipment according to claim 6 it is characterised in that：Described first metal covering unit and the described 4th
Metal covering unit is electrically connected by described plated-through hole.
9. the wireless backhaul equipment according to any one of claim 1-5 is it is characterised in that the resonance of described Super-material antenna
Frequency range at least includes 2.4GHz-2.49GHz and 5.72GHz-5.85GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110299659.8A CN103036021B (en) | 2011-09-30 | 2011-09-30 | Wireless backhaul device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110299659.8A CN103036021B (en) | 2011-09-30 | 2011-09-30 | Wireless backhaul device |
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| Publication Number | Publication Date |
|---|---|
| CN103036021A CN103036021A (en) | 2013-04-10 |
| CN103036021B true CN103036021B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110299659.8A Active CN103036021B (en) | 2011-09-30 | 2011-09-30 | Wireless backhaul device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
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- 2011-09-30 CN CN201110299659.8A patent/CN103036021B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
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