CN206076489U - Wideband folded monopole sub-antenna unit and antenna - Google Patents
Wideband folded monopole sub-antenna unit and antenna Download PDFInfo
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- CN206076489U CN206076489U CN201620897134.2U CN201620897134U CN206076489U CN 206076489 U CN206076489 U CN 206076489U CN 201620897134 U CN201620897134 U CN 201620897134U CN 206076489 U CN206076489 U CN 206076489U
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- folded monopole
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- inverted trapezoidal
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Abstract
This utility model provides a kind of wideband folded monopole sub-antenna unit, including radiating surface, the radiating surface is in inverted trapezoidal, the loading vertical with radiating surface is formed with the long edge contraction of inverted trapezoidal radiating surface, earthing rod is arranged at intervals with a hypotenuse side of radiating surface, long side one end of earthing rod correspondence inverted trapezoidal radiating surface is connected with radiating surface.The beneficial effects of the utility model are：The structure design of antenna is optimized, so as to avoid the obstruct of the loss between antenna and overlay area, product manufacture is simple, low cost, cross-section structure size are little, is widely portable to be connected with AP device externals or internal connection use.
Description
Technical field
This utility model is related to WLAN wireless LAN communication antennas, refers in particular to a kind of wideband folded monopole sub-antenna list
Unit and antenna.
Background technology
Before wireless local area network technology invention, people want to carry out netting by network, it is necessary to first use physical cord
Cable sets up the path of an electronic signal operation, with the progress of technology, in order to improve speed and efficiency, invents again later
Fiber optic communication.After network Development is to certain scale, people have found again, no matter this cable network set up, dismount or
Upgraded on original base and reconstructed, it is all extremely difficult, and cost and cost are also very high, then the networking mode of WLAN should
Transport and give birth to.Communication of " wired " Communication Development to " wireless ".Antenna system between transceiver is that the energy of this communication turns
Parallel operation.In whole communication link, antenna plays important transfer effect.
WLAN Full Name in English:Wireless Local Area Networks；It is abbreviated as:WLAN.It utilizes
Radio frequency (Radio Frequency；RF technology), using electromagnetic wave propagation, the LAN for replacing original signal cable to be constituted
Network, is communicatively coupled in the air so that WLAN can allow user to pass through it using simple access data framework, reach
To the ideal state that information is interconnected whenever and wherever possible.It is particularly convenient data transmission system.
The practical application scene of WLAN generally falls into three parts：Room subsystem, interior put dress, outdoor cover.It is various
The application scenarios of change are such as：Hotel, public hot spot, cell access commercial building, wireless bridge etc..For WLAN coverage plannings
In, need the scheme for using, major programme are determined according to the practical situation of building：Put AP, indoor AP+DAS, outdoor AP in interior
+ bridge, outdoor AP+ optical cables etc..Also need to determine whether to share already present indoor distributed system.According to the area structure of building
The features such as purposes, determine the selection of signal source and specific scheme.Determine AP quantity and position and power distribution, combiner,
The radio-frequency devices such as antenna are selected.
Communication system frequency resource-constrained, wlan system are also such.For wlan system can be interlocked in fact with adapted space
The recycling of existing frequency, so as to increase network capacity.It is main interference source in wireless communication network that cochannel is disturbed, frequency
Planning should be accomplished to minimize to overlap with frequency to solve interference problem.To ensure not interfere with each other between channel, in 2.4G band requirements two
Individual channel center frequency is spaced and is less than 25MHZ, and the non-overlapped channel at the interval of 20MHZ is adopted the channel of 5.8G frequency ranges more.2.4G
Frequency range is mainly 2400-2500MHZ, and 5.8G frequency ranges are mainly 5150-5850MHZ.
The gain of the power antenna that the footprint size of AP is sent depending on AP, antenna in the whole communication systems of WLAN
Directivity, receiving sensitivity, penetration loss, the factor such as signal to noise ratio.Nearer apart from AP, STA signal intensitys quality is better, obtains
Wireless link rate it is also higher.Covering quality is associated with periphery signal to noise ratio, and signal to noise ratio is more satisfactory one more than 28db
Individual scope.Coverage is related to the penetration capacity of signal, in same transmission power and the situation for obtaining same connection speed
Coverage some differences of lower 2.4G compared with 5.8G frequency ranges, 2.4G coverages are more than 5.8G frequency ranges.
But in prior art, the usual structure of such antenna is not reasonable, cause to have between AP antennas and overlay area compared with
Big loss is intercepted.
Utility model content
Technical problem to be solved in the utility model is：Avoid between AP antennas and overlay area, having larger loss resistance
Every, there is provided a kind of wideband folded monopole sub-antenna unit and antenna.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of sub- day of wideband folded monopole
Line unit, including radiating surface, the radiating surface are in inverted trapezoidal, are formed with the long edge contraction of inverted trapezoidal radiating surface and hang down with radiating surface
Straight loading, is arranged at intervals with earthing rod, the long side one of earthing rod correspondence inverted trapezoidal radiating surface in a hypotenuse side of radiating surface
End is connected with radiating surface.
In above-mentioned, the loading includes the first loading, the second loading；First loading is hung down with the second loading interval homonymy
It is straight to arrange in radiating surface.
In above-mentioned, two hypotenuse angles of the inverted trapezoidal radiating surface are not less than 90 degree.
In above-mentioned, the minor face of the inverted trapezoidal radiating surface is provided with a convex edge, and radiating surface is provided with feed in convex edge position
Hole；The width of the convex edge is the length of side of the minor face of 1/4 inverted trapezoidal radiating surface.
This utility model further relates to a kind of wideband folded monopole sub-antenna, including base plate and as above arbitrarily described wideband folding
Folded monopole antenna unit；The other end of the earthing rod of the wideband folded monopole sub-antenna unit is connected with backplate surface, and
The radiating surface of wideband folded monopole sub-antenna unit is perpendicular to backplate surface.
In above-mentioned, the minor face of the inverted trapezoidal radiating surface of the wideband folded monopole sub-antenna unit is provided with a convex edge, spoke
Penetrate face and convex edge position is provided with power feed hole；The minor face of the inverted trapezoidal radiating surface is arrived to the twice convex edge of distance of backplate surface
The distance of backplate surface.
In above-mentioned, the wideband folded monopole sub-antenna unit includes two, two wideband folded monopole sub-antenna units
90 layouts are presented and are distributed in backplate surface.
In above-mentioned, the base plate is in the form of annular discs, the integral multiple of its a diameter of Frequency.
The beneficial effects of the utility model are：The structure design of antenna is optimized, so as to avoid antenna and the area of coverage
Loss between domain is intercepted, and product manufacture is simple, low cost, cross-section structure size are little, is widely portable to and AP equipment
External connection or internal connection are used.
Description of the drawings
Concrete structure of the present utility model is described in detail in detail below in conjunction with the accompanying drawings
Fig. 1 is the structural representation of antenna element of the present utility model；
Fig. 2 is the dimensional structure diagram of antenna element of the present utility model；
Fig. 3 is the structural representation of antenna of the present utility model；
Fig. 4 is the dimensional structure diagram of antenna of the present utility model.
1- base plates；2- monopole antenna units；21- radiating surfaces；22- power feed holes；23- first is loaded；24- second is loaded；
25- earthing rods.
Specific embodiment
By describing technology contents of the present utility model, structural features in detail, realizing purpose and effect, below in conjunction with enforcement
Mode simultaneously coordinates accompanying drawing to be explained in detail.
Monopole antenna is the elementary cell form for constituting antenna.This antenna is all presented by coaxial (non-equilibrium) transmission line
Electricity, by means of the gradual change taper of coaxial line internal and external conductor, is capable of achieving broadband.In free space, it is assumed that outer conductor is unlimited
Big ideal conductive plane, the electric current on monopole is Sine distribution, therefore quarter-wave monopole is on a vertical plane
Pattern shapes of the antenna pattern to half-wave doublet antenna in vertical plane are similar, and vertical direction is into 8-shaped, antenna
Horizontal component and base plate mirrored portion make radiation almost offset due to anti-phase, therefore base plate size only affects the resistance of antenna
Anti-, on antenna radiation characteristics without impact, so the radiation of no underground, it be in so omnidirectional that horizontal plane is appointed.Quarter-wave one pole day
Half of the input impedance of line root for dipole antenna impedance.Radiant power half also for dipole antenna.In the horizontal plane, hang down
Straight unipole antenna is isotropic.The sub- height dimension of conventional unipolar determined by low-frequency resonant frequency, about 1/4 ripple of Frequency
It is long.In feed design, cable outer conductor connection Antenna baseplate, inner wire connection antenna monopole.Appropriate design feed section
And base plate size, antenna can realize broadband properties.Because of simple structure, overall size is little, and this patent design derives from this, therefore
Which be have selected as the preferred option of this patent Design of Omnidirectional Antenna.
Refer to Fig. 1 and Fig. 2, a kind of wideband folded monopole sub-antenna unit 2, including radiating surface 21, the radiating surface
21 is in inverted trapezoidal, is formed with the loading vertical with radiating surface 21 in the long edge contraction of inverted trapezoidal radiating surface 21, in radiating surface 21
One hypotenuse side is arranged at intervals with earthing rod 25, long side one end of 25 corresponding inverted trapezoidal radiating surface 21 of earthing rod and 21 phase of radiating surface
Even.
As monopole antenna is developed by the two conductor transmission line for opening.Biconial is stretched as when conductor opens
Shape, and two respectively bored coaxial, then antenna belongs to the omnidirectional's (astaticism) in horizontal plane (perpendicular to the plane of the axis of cone).Antenna can be real
Existing wideband work.In actual design, upper cone is in revolution shape, realizes broadband, and lower cone is gradually replaced by plane.
In this patent, by Fig. 1 it can be seen that, wideband folded monopole sub-antenna unit 2 is considered as upper cone, and wideband
Folded monopole sub-antenna unit 2 replaces revolving body by plane, reduces difficulty of processing, simplifies design.Wideband folded monopole sub-antenna
21 partial shape of radiating surface of unit 2 is in inverted trapezoidal planar structure, is similar to cone taper.Additionally, increased on radiating surface adding
Carry, can further reduce antenna height size.Antenna monopole is after loading on top, because antenna is lossy, signal is expert at
During entering, amplitude constantly decays, and reaches small value, and then almost areflexia occurs, so the signal wave of the loading beta radiation day after tomorrow
Shape conformality is preferable.Due to the few reason of order of reflection, the degree of convergence when reflection configuration of loading aft antenna is not loaded is carried
It is high.The impedance bandwidth of respective antenna also obtains broadening.Antenna size miniaturization, in 5.8G high band directional diagrams out-of-roundness also less
Load condition is improved.
Experiment test shows that in 2.4G and 5.8G WLAN frequency ranges, return loss is more than 12db to the antenna of the art of this patent,
Directional diagram omnidirectional characteristic is expanded.And overall little, the simple advantage of processing technique that possesses size.
Embodiment 1
In above-mentioned, the loading includes the first loading, the second loading；First loading is hung down with the second loading interval homonymy
It is straight to arrange in radiating surface.
Found by many experiments, the loading on radiating surface can be distributed in the both sides or the same side of radiating surface 21, and add
Carry end and can choose one or more, reach and make the effect of Frequency resonance identical.The preferred loading end of the design is 2, point
Cloth is in monopole plane the same side.So as to unsymmetric structure form, therefore the height of monopole antenna unit are adopted on radiating surface 21
Degree H is much smaller than 1/4h, 0.1 λ of H ≈Low frequency.Realize the low profile of antenna, small size.
Embodiment 2
In above-mentioned, two hypotenuse angles of the inverted trapezoidal radiating surface are not less than 90 degree.
In the design, the value bigger (i.e. angle is bigger) of two hypotenuse angle thetas of inverted trapezoidal radiating surface, the resistance value of antenna
Tend to broadband.Jing many experiments find, be meet bandwidth demand and, θ should not be little 90 degree.
Embodiment 3
In above-mentioned, the minor face of the inverted trapezoidal radiating surface is provided with a convex edge, and radiating surface is provided with feed in convex edge position
Hole；Phase is sent out through many experiments, as length of side W4 of the minor face that the width W3 of the convex edge is 1/4 inverted trapezoidal radiating surface, i.e. W4=
During 4W3, antenna effects are optimal.
As shown in figure 3, this utility model further relates to a kind of wideband folded monopole sub-antenna, including base plate and as above any institute
The wideband folded monopole sub-antenna unit stated；The other end of the earthing rod of the wideband folded monopole sub-antenna unit and base plate table
Face is connected, and the radiating surface of wideband folded monopole sub-antenna unit is perpendicular to backplate surface.
Scheme designed by this patent, the monopole antenna unit of asymmetric folding can be used as individual antenna, also may be used
Use as the unit of antenna array.In structure, radiating surface and the earthing rod of wideband folded monopole sub-antenna unit are in same putting down
On face, radiating surface is mechanically connected with base plate 1 by earthing rod 25, reaches supporting role.
Thus the antenna for manufacturing, product manufacture is simple, low cost, cross-section structure size are little, be widely portable to
AP device externals connect or internal connection is used.
Embodiment 4
In above-mentioned, the minor face of the inverted trapezoidal radiating surface of the wideband folded monopole sub-antenna unit is provided with a convex edge, spoke
Penetrate face and convex edge position is provided with power feed hole；Find through many experiments, when the minor face of inverted trapezoidal radiating surface is to backplate surface
Apart from H2 should twice convex edge to backplate surface apart from H1, and during H2=2H1, antenna effects are optimal.
Embodiment 5
Referring to Fig. 4, it is above-mentioned in, the wideband folded monopole sub-antenna unit includes two, two wideband folded monopoles
Antenna element is presented 90 layouts and is distributed in backplate surface.
In the present embodiment, two monopole antenna unit group battle arrays are distributed in 1 upper end of base plate in 90 degree of layouts, constitute more single
First antenna, 360 degree of spacing wave blind areas of effectively solving.Meet multiple antennas big data flow antenna requirement.Antenna possesses low profile
Feature, also can use as car antenna scheme as domestic aerial.
Embodiment 6
The base plate 1 is in the form of annular discs, the integral multiple of its a diameter of Frequency.
Due to the pole in antennas as transmission line of base plate 1, size directly determines the impedance of antenna resonant frequency
Bandwidth, size are bigger, and impedance more tends to input impedance, thus into broadband character.Optimum, it is the design of satisfaction 2.4 and 5.8G
Target, 1 diameter of base plate are approximately equal to 1 λLow frequency.Correspondence low frequency 2.4G, wavelength about 120mm.
Technical solutions of the utility model, design of can closing reach antenna index and are：Antenna Operation frequency range 2400-2500MHZ
And 5150-5850MHZ.Gain reaches 2db, vertical polarization, and horizontal plane is in omnidirectional, low-profile size.In addition antenna element can be with
It is used alone, it is also possible to realize that multiad battle array is used.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are included in scope of patent protection of the present utility model in the same manner.
Claims (8)
1. a kind of wideband folded monopole sub-antenna unit, it is characterised in that：Including radiating surface, the radiating surface is in inverted trapezoidal, in
The long edge contraction of inverted trapezoidal radiating surface is formed with the loading vertical with radiating surface, is arranged at intervals with a hypotenuse side of radiating surface
Earthing rod, long side one end of earthing rod correspondence inverted trapezoidal radiating surface are connected with radiating surface.
2. wideband folded monopole sub-antenna unit as claimed in claim 1, it is characterised in that：The loading includes that first adds
Carry, second loads；First loading is arranged perpendicular to radiating surface with the second loading interval homonymy.
3. wideband folded monopole sub-antenna unit as claimed in claim 1, it is characterised in that：The two of the inverted trapezoidal radiating surface
Hypotenuse angle is not less than 90 degree.
4. the wideband folded monopole sub-antenna unit as described in claim 1-3 any one, it is characterised in that：The inverted trapezoidal
The minor face of radiating surface is provided with a convex edge, and radiating surface is provided with power feed hole in convex edge position；The width of the convex edge is 1/4 terraced
The length of side of the minor face of shape radiating surface.
5. a kind of wideband folded monopole sub-antenna, it is characterised in that：Including base plate and as described in claim 1-4 any one
Wideband folded monopole sub-antenna unit；The other end and backplate surface phase of the earthing rod of the wideband folded monopole sub-antenna unit
Connect, and the radiating surface of wideband folded monopole sub-antenna unit is perpendicular to backplate surface.
6. wideband folded monopole sub-antenna as claimed in claim 5, it is characterised in that：The wideband folded monopole sub-antenna list
The minor face of the inverted trapezoidal radiating surface of unit is provided with a convex edge, and radiating surface is provided with power feed hole in convex edge position；The inverted trapezoidal spoke
Penetrate the minor face in face to backplate surface the twice convex edge of distance to backplate surface distance.
7. the wideband folded monopole sub-antenna as described in claim 5 or 6, it is characterised in that：The sub- day of the wideband folded monopole
Line unit includes two, and two wideband folded monopole sub-antenna units are presented 90 layouts and are distributed in backplate surface.
8. wideband folded monopole sub-antenna as claimed in claim 5, it is characterised in that：The base plate is in the form of annular discs, its diameter
For the integral multiple of Frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620897134.2U CN206076489U (en) | 2016-08-17 | 2016-08-17 | Wideband folded monopole sub-antenna unit and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620897134.2U CN206076489U (en) | 2016-08-17 | 2016-08-17 | Wideband folded monopole sub-antenna unit and antenna |
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| Publication Number | Publication Date |
|---|---|
| CN206076489U true CN206076489U (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620897134.2U Active CN206076489U (en) | 2016-08-17 | 2016-08-17 | Wideband folded monopole sub-antenna unit and antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165423A (en) * | 2019-04-03 | 2019-08-23 | 京信通信系统（中国）有限公司 | Broadband miniature antenna |
| CN110350308A (en) * | 2019-07-15 | 2019-10-18 | 重庆大学 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna and its trap design |
-
2016
- 2016-08-17 CN CN201620897134.2U patent/CN206076489U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165423A (en) * | 2019-04-03 | 2019-08-23 | 京信通信系统（中国）有限公司 | Broadband miniature antenna |
| CN110165423B (en) * | 2019-04-03 | 2024-03-12 | 京信网络系统股份有限公司 | Broadband miniaturized antenna |
| CN110350308A (en) * | 2019-07-15 | 2019-10-18 | 重庆大学 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna and its trap design |
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