CN208226098U - A kind of ellipse with dual polarised radiation mould sews flexible waveguide - Google Patents
A kind of ellipse with dual polarised radiation mould sews flexible waveguide Download PDFInfo
- Publication number
- CN208226098U CN208226098U CN201820815253.8U CN201820815253U CN208226098U CN 208226098 U CN208226098 U CN 208226098U CN 201820815253 U CN201820815253 U CN 201820815253U CN 208226098 U CN208226098 U CN 208226098U
- Authority
- CN
- China
- Prior art keywords
- sews
- waveguide
- hole
- oval
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of ellipses with dual polarised radiation mould to sew flexible waveguide, including the molding oval metallic waveguide of two embossing disposed in parallel, two oval metallic waveguides are externally provided between oversheath and oversheath and are connected by dowel, the vertical polarization that radiation vertically polarized wave is respectively equipped on the same side end face of two oval metallic waveguides sews unit and the horizontal polarization of radiation level polarized wave sews unit, vertical polarization sews vertically polarized wave caused by unit and the horizontal field strength difference 20dB or more sewed between horizontal polarized wave caused by unit；The utility model sews the multiple-input and multiple-output that flexible waveguide realizes rail transit field wireless signal transmission by one, and improve the isolation between unlike signal, the high capacity high-quality transmission of signal in guarantee different channels, and realize that the car-ground radio transmission based on LTE is comprehensive and carry interconnecting and adapting to 5G development use demand for more communication systems such as CBTC, PIS, Wi-Fi and LTE-U.
Description
Technical field
The utility model relates to wirelessly communicate and signal transmission technology field, more particularly to a kind of there is dual polarised radiation mould
Ellipse sew flexible waveguide.
Background technique
Currently, with the development of urban track traffic wireless communication technique, the train automatic controlling system based on communication
(Communication Based Train Control System, CBTC) has been answered in city rail traffic signal system extensively
With.The frequency range of existing CBTC signal system is 2.4GHz~2.5GHz, and at present in the electronic equipment of frequency range application
It is numerous, including Wi-Fi, iPad, wireless mouse, wireless phone, bluetooth equipment and medical treatment detection device etc., it undoubtedly can to vehicle
Wireless signal transmission system causes different degrees of interference, influences the safe operation of train.
MIMO technology refers to uses multiple transmitting antennas and receiving antenna in transmitting terminal and receiving end respectively, passes through signal
The transmission of the mutiple antennas of transmitting terminal and receiving end and reception realize multi-carrier frequency fusion and multisystem so as to improve communication quality
Interconnect.This technology can make full use of space resources, realize multiple-input multiple-output by mutiple antennas, not increase frequency spectrum money
In the case where source and antenna transmission power, system channel capacity can be increased exponentially, under being considered as because having a clear superiority
The core technology of one third-generation mobile communication, the wireless signal transmission of domestic city rail traffic at present field also start technique in succession
Research and experiment work, Huawei Company planned in BYD cloud rail project using this frequency spectrum carry LTE-U system realize
Train-ground communication function, and it is 4.8GHz~5.0GHz that country, which has issued frequency outside 5G frequency spectrum room,.
The comprehensive bearing system of existing urban track traffic car-ground radio transmission LTE generally use antenna, leaky cable and
Three kinds of transmission mediums of leaky waveguide, wherein leaky waveguide transmits signal reliability highest, transmission range longest, by outer because having
Boundary's environmental impact minimization, working frequency can be used widely according to advantages such as wave-guide cavity wave structure size determinations.Based on vehicle
Influence of the reliability and external electromagnetic environment of earth signal transmission to city rail traffic signal system, the following leaky waveguide will be wide
The general car-ground radio signal transmission system applied to 3GHz or more.
When using MIMO technology, existing leaky waveguide paving mode mainly includes two kinds, and one is be spaced a spacing
Flexible waveguide is sewed from two ellipses are laid with, another kind is to be laid with the rectangle leaky waveguide with dual polarised radiation mould.When adopting
When carrying out networking with the former, two ellipses sew flexible waveguide and have to keep a fixed spacing that MIMO function just can be achieved, and cause to apply
If many other adverse effects, such as space is big, difficulty of construction is big, installation cost and maintenance cost increase, can also be to the route of other departments
Construction, maintenance also result in inconvenience；When carrying out networking using the latter, due to the architectural characteristic of rectangle leaky waveguide, can lead
It causes to occur so that there are following problems: (1) can only be laid on the outside of track or on the inside of track, laying space is limited；(2) rectangle leaks
It lets out and is laid on trackside along waveguide, neighbouring several sections of rectangle leaky waveguides, which need to be dismantled, when repairing rail can just carry out, after rail
Phase maintenance brings inconvenience；(3), it can not be bent because rectangle leaky waveguide can only be made into straight tube, transport and carry inconvenience；
(4), single rectangle leaky waveguide distance is shorter, and the tie point in unit distance is more, and junction installment work is numerous when being not only laid with
Weight, tie point excessively also cause great hidden danger to the communication security of entire communication network；(5), by installation environment and structure
It influences, rectangle leaky waveguide thermal expansion and contraction is serious, and every 300 meters of line length expanding with heat and contract with cold just can reach according to statistics
700mm is big, causes easily to be pulled loose at connecting flange, and then leads to the dampness water inlet of rectangle leaky waveguide, influences entirely to communicate
The safety of network；(6) the waterproof and dampproof performance of rectangle leaky waveguide is poor, easily leads to internal wetted water inlet, and then influence communication quality；
(7), it is influenced obviously by complicated metro environment, rectangle leaky waveguide will receive the galvano-cautery of train DC power-supply system and because of ring
The serious harm for the chemical attack that border generates, since rectangle leaky waveguide is only protected with the wide face for sewing hole, at it
Excess-three face will appear the phenomenon that corrosion damage, and communication system is caused to be paralysed.
Utility model content
The purpose of the utility model is to provide a kind of ellipses with dual polarised radiation mould to sew flexible waveguide, can be by applying
If one is sewed flexible waveguide and realizes the MIMO technique of rail transit field wireless signal transmission, while improving different letters
Isolation between number, guarantees the high capacity high-quality transmission of signal in different channels, and is able to achieve the car-ground radio based on LTE and passes
Interconnecting and adapting to 5G for more communication systems such as defeated comprehensive carrying CBTC, PIS, Wi-Fi and LTE-U develops use demand.
The technical solution adopted in the utility model are as follows:
A kind of ellipse with dual polarised radiation mould sews flexible waveguide, including two disposed in parallel oval metal waveguides
Pipe, the bellows that oval metallic waveguide uses embossing moulding process to be formed, two oval metallic waveguides are arranged with outer outside
It is connected as one between sheath and two oversheaths by dowel；On the same side end face of described two ellipse metallic waveguides
The vertical polarization for being respectively provided with radiation vertically polarized wave sews unit and the horizontal polarization for radiation level polarized wave is leaked
Unit is let out, vertical polarization is sewed vertically polarized wave and level caused by unit and sewed between horizontal polarized wave caused by unit
Field strength differ 20dB or more；
The vertical polarization sews unit, and to include multiple groups evenly distributed hang down along the length direction of oval metallic waveguide
Hole group is sewed in straight polarization；If the pitch that two adjacent groups vertical polarization sews hole group is P, thenM is integer, and 1≤m≤
10, the λ wavelength for electromagnetic wave under corresponding frequency of use in oval metal waveguide；It includes N number of that every group of vertical polarization, which sews group,
Vertical polarization along oval metallic waveguide length direction setting sews hole, 1≤N≤10；
It includes the multiple groups water evenly distributed along the length direction of oval metallic waveguide that the horizontal polarization, which sews unit,
Mean pole sews hole group, if the pitch that two adjacent groups horizontal polarization sews hole group is P ', thenM is integer, and 1
≤ m '≤10, λ are wavelength of the electromagnetic wave under corresponding frequency of use in oval metal waveguide；Every group of vertical polarization sews a group packet
It includes a vertical polarization along the setting of oval metallic waveguide length direction of N ' and sews hole, 1≤N '≤10.
If the termination frequency of oval metal flexible waveguide is fstopIf any ellipse metal waveguide tube chamber cross section
Major diameter length is A, and minor axis diameter length is B, then the value range of major diameter length is 25.5mm≤A≤108.5mm,
The value range of minor axis diameter length is 12.5mm≤B≤65.5mm, corresponding termination frequency fstopValue range be
2.5GHz≤fstop≤11.7GHz。
The value range of the major diameter length of any oval metal waveguide tube chamber cross section is 48.5mm≤A
≤ 50.5mm, the value range of minor axis diameter length are 27.5mm≤B≤30mm, corresponding termination frequency fstopValue model
It encloses for 4.6GHz≤fstop≤6.6GHz。
If ellipse wider two side external surface of metallic waveguide is wide face, outside the relatively narrow two sides of oval metallic waveguide
Surface is leptoprosopy, and the wide face of two oval metallic waveguides is arranged towards front and back, and vertical polarization sews unit and horizontal polarization
Unit is sewed to be separately positioned on the wide face in the same side of two oval metallic waveguides.
The set pass for sewing hole sews hole, " vertical bar type using line-styled on the oval metallic waveguide of described two
Sew hole ", " eight " font sews hole or continuous type sews any two kinds in hole；
It is the lateral strip-shaped hole for being parallel to oval metallic waveguide length direction, " one " word that the line-styled, which sews hole,
Type is sewed hole and is staggeredly successively set on the end face of corresponding oval metallic waveguide up and down；
Described " eight " font sews oblique bar shaped of the hole for the length direction of middle line and oval metallic waveguide in angle theta
Hole, same group of oblique strip-shaped hole are parallel to each other, and are located at same with the bottom end of the oblique strip-shaped hole of group and are parallel to oval gold
On the straight line for belonging to guide length direction, the oblique bar shaped pore structure of two adjacent groups is identical and radial direction along oval metal flexible waveguide
Symmetrically；
It is the vertical strip-shaped hole perpendicular to oval metallic waveguide length direction that the vertical bar type, which sews hole, same group
The bottom end of vertical strip-shaped hole is located at same and is parallel on the straight line of oval metallic waveguide length direction；
The continuous type is sewed hole and is arranged on the wave crest of oval metallic waveguide, and same group of continuous type sews hole
It is separately positioned on and is sewed on the identical multiple continuous wave crests of hole number with continuous type.
The oversheath is equipped with the carrier cable for being parallel to oval metallic waveguide, and carrier cable successively includes steel from the inside to the outside
Cable and wirerope sheath, wirerope sheath are connected as one with oversheath.
The carrier cable is disposed over the lower section of the above and or below oversheath of oversheath.
The utility model has the following beneficial effects:
(1) the oval metallic waveguide parallel by setting, and divide on two same side end faces of oval metallic waveguide
The different channels of transmission signal She Zhi not be formed, are realized more for radiating the hole of sewing of vertically polarized wave and horizontal polarized wave
Application of the multi output technology in a leaky waveguide is inputted, while improving the isolation between unlike signal, guarantees different channels
The high capacity high-quality transmission of middle signal substantially increases system channel capacity, while system frequency range is promoted to 3GHz
To tens GHz；
(2) by using the oval metal waveguide of embossing structure, the bending property of the utility model is greatly strengthened, it is made
It with lopping can be coiled on Electric cable coil, joint length is long, not only facilitates transport and carrying, has broken original rectangle leakage
The waste of manpower caused by the limitation and carrying of section transport cannot be grown by letting out waveguide, and reduce the points of the connection in unit distance
Amount, substantially increases laying efficiency, reduces manpower waste；
(3) by vertical polarization being sewed unit and horizontal polarization sews unit respectively along the length of oval metallic waveguide
Direction is uniformly arranged on the wide face in the same side of two oval metallic waveguides, makes to sew on any one oval metallic waveguide
Signal strength caused by hole all has good flatness, and the reception field strength difference of 50% probability and 95% probability is less than 2dB,
It is better adapted to the transmission of car-ground radio signal, meets the use demand of MIMO technology, meets the development trend of the communication technology；
(4) feature good, light-weight using the curvature of oval metal waveguide can make this practical by the way that carrier cable is arranged
It is novel to be both fixed on the wall as leakage coaxial cable by suspender, it can also be laid with as rectangle leaky wave conduit
In orbit, mounting means is flexible, and easy for installation；
(5) by setting outer jacket structure, comprehensive protection is carried out to flexible waveguide is sewed, effectively avoids complicated ring
The corrosion of oval leaky wave conduit is damaged in border, and high degree strengthens waterproof moisture-proof effect, is guaranteeing waveguide service performance
While, solve the perishable defect of traditional rectangular waveguide moisture-sensitive, ensured indirectly waveguide transmission safety and can
By property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is the structural schematic diagram that vertical polarization sews hole group in Fig. 1；
Fig. 3 is the structural schematic diagram that horizontal polarization sews hole group in Fig. 1；
Fig. 4 is the cross section structure schematic diagram of Fig. 1；
Fig. 5 is to receive first wave conduit field strength analogous diagram using vertical polarized antenna in the utility model embodiment one；
Fig. 6 is to receive second waveguide pipe field strength analogous diagram using vertical polarized antenna in the utility model embodiment one；
Fig. 7 is to receive second waveguide pipe field strength analogous diagram using horizontally-polarized antenna in the utility model embodiment one；
Fig. 8 is to receive first wave conduit field strength analogous diagram using horizontally-polarized antenna in the utility model embodiment one；
Fig. 9 is the structural schematic diagram of the utility model embodiment two.
Description of symbols:
1, first wave conduit；2, lateral strip-shaped hole；3, second waveguide pipe；4, vertical strip-shaped hole；5, oversheath；6, load
Rope；6a, wirerope；6b, wirerope sheath；7, dowel；8, oblique strip-shaped hole；9, continuous type sews hole.
Specific embodiment
As shown in Figure 1, the utility model includes two disposed in parallel oval metallic waveguides, oval metallic waveguide is adopted
The bellows formed with embossing moulding process, is arranged with oversheath 5 outside two oval metallic waveguides, two oversheaths 5 it
Between be connected as one by dowel 7；Setting is parallel to the carrier cable 6 of oval metallic waveguide, carrier cable 6 on oversheath 5
It from the inside to the outside successively include wirerope 6a and wirerope sheath 6b, wirerope sheath 6b is connected as one with oversheath 5, the setting of carrier cable 6
The lower section of the above and or below oversheath 5 of oversheath 5 above.
The vertical polarization that radiation vertically polarized wave is respectively provided on the front end face of two oval metallic waveguides is sewed
Unit and horizontal polarization for radiation level polarized wave sew unit, and vertical polarization sews vertically polarized wave caused by unit
And the horizontal field strength difference 20dB or more sewed between horizontal polarized wave caused by unit.
The utility model in order to better understand with reference to the accompanying drawing makees furtherly the technical solution of the utility model
It is bright.
Embodiment one:
As shown in Figure 1, the utility model includes two oval metallic waveguides disposed in parallel, if the ellipse metal wave
Wider two side external surface of conduit is wide face, and two relatively narrow side external surfaces of oval metallic waveguide are leptoprosopy, two oval metals
Waveguide is wide to be arranged facing towards front and back.
If the major diameter length of oval metallic waveguide cross section is A, if the short axle of oval metallic waveguide cross section
Diameter length is that the value of B, A and B meet following formula (1) and formula (2) simultaneously:
A > B and A ≈ 2kB (1)
In formula (1) and (2), k is oval metal waveguide pipe diameter correction factor, and the value range of k is 0.8~1, k1For
Oval metallic waveguide embossing correction factor, k1Value range be 0.8~1, ctFor free space electromagnetic wave propagation speed,
fstopFor the termination frequency of oval leakage metallic waveguide；The value range of major diameter length be preferably 25.5mm≤A≤
108.5mm, the value range of minor axis diameter length are preferably 12.5mm≤B≤65.5mm, corresponding termination frequency fstop's
Value range is 2.5GHz≤f≤11.7GHz.Further, it is preferable to the value range of major diameter length be 48.5mm≤A≤
50.5mm, the value range of minor axis diameter length are 27.5mm≤B≤30mm, corresponding termination frequency fstopValue range
For 4.6GHz≤f≤6.6GHz.In the present embodiment, A=49.35mm,That is A=28.75mm, fstop=5.3GHz.
If the oval metallic waveguide of top is first wave conduit 1, the oval metallic waveguide of lower section is second waveguide pipe
3.Be parallel to the carrier cable 6 of first wave conduit 1 as shown in figure 4, being equipped with above the oversheath 5 of first wave conduit 1, carrier cable 6 by
It is interior to outside successively including wirerope 6a and wirerope sheath 6b, wirerope sheath 6b is connected as one with oversheath 5.Utilize oval metal wave
Good, the light-weight feature of the curvature led, by the way that carrier cable 6 is hung the first wave guide in the installation sites such as tunnel wall, laying
The utility model need to be can be realized just towards car antenna receiving direction by sewing hole direction set by pipe 1 and second waveguide pipe 3
Victory installation, can be both fixed on the wall as leakage coaxial cable by suspender, can also be as rectangle leaky wave conduit
It is laid in orbit, mounting means is flexible, and easy for installation.
It is uniformly provided with multiple groups vertical polarization in the horizontal direction on the wide face in the front end of first wave conduit 1 and sews hole group；If adjacent
The pitch that two groups of vertical polarizations sew hole group is P, then P ≈ m λ/2, m is integer, and 1≤m≤10, λ are that electromagnetic wave makes in correspondence
With the wavelength under frequency in oval metal waveguide；It includes that two line-styleds sew hole that every group of vertical polarization, which sews group, adjacent
Line-styled sew hole up and down be staggered in the two sides up and down of the central axes in the wide face in 1 front end of first wave conduit.Such as Fig. 2 institute
Show, line-styled sews hole for lateral strip-shaped hole 2, if the pitch of two wave crests is L, two line-styleds sew the section between hole
Away from P1For 2L, it is 6L that two groups of vertical polarizations, which sew the pitch P between group,.
As shown in figure 3, being uniformly provided with multiple groups horizontal polarization in the horizontal direction on the wide face in the front end of second waveguide pipe 3 sews hole
Group, horizontal polarization sew Kong Zuyu vertical polarization and sew the position of hole group or more one-to-one correspondence；Every group of horizontal polarization sews hole group
Hole is sewed including two vertical bar shapes arranged side by side, vertical bar shape is sewed hole and set perpendicular to the length direction of oval metallic waveguide
It sets, and vertical bar shape is sewed the midpoint in hole and is arranged on the central axis of second waveguide pipe 3, each vertical bar shape sews hole and top the
It is corresponding that line-styled on one metallic waveguide sews hole upper and lower position.
The range of long side length of above-mentioned transverse direction strip-shaped hole 2 and vertical strip-shaped hole 4 is
Wherein, d indicates the long side length of lateral strip-shaped hole 2 or vertical strip-shaped hole 4, and λ is wavelength of the wave in free space, λgFor waveguide wave
Long, the value range of d is 5mm≤d≤25mm；Cross slat row hole or vertical strip-shaped hole 4 are all provided in the angle of long side and broadside
There is chamfering, the value range of chamfer radius R isC indicates the width edge length of Cross slat row hole or vertical strip-shaped hole 4.Such as figure
Shown in 3, it is 3L that two vertical bar shapes, which sew the pitch between hole, and it is 6L that two groups of horizontal polarizations, which sew the pitch between hole,.
The quality for assessing oval metallic waveguide radiance, is generally examined by the probability of its coupling loss.Leakage
The conduction electric current on the oval metal waveguide inside pipe wall of hole cutting is let out, electric field is generated on sewing hole, and to oval metallic waveguide
Wall currents generate disturbance, and to free space coupling part electromagnetic energy out of oval metallic waveguide, and with sewing hole
The difference of position and shape and size is also different by the field strength for sewing hole to external radiation.
It is illustrated below with sewing the coupling loss in hole and car antenna:
The coupling loss for sewing hole and car antenna is acquired by following equation:
In formula (3), LcIndicate coupling loss, unit is decibel, PtIndicate the transimission power electricity in oval metallic waveguide
Flat, unit is decibel milliwatt, PrIndicate the received power level of car antenna, unit is decibel milliwatt.
50% and 95% locally coupled loss probability value is generallyd use to measure oval metallic waveguide radiance
Quality, i.e., the 50% locally coupled loss measured is less than the value less than the locally coupled loss that the value and 95% measure, same
In the case where probability value, coupling loss is smaller, and the reception field strength of car antenna is stronger, and the radiance of oval metallic waveguide is got over
It is good.
The quality of transmission performance generally judges that the transmission loss of oval metallic waveguide is by following according to its transmission loss
Formula acquires:
aLWG=aWG+ar (4)
In formula (4), aLWGIndicate the transmission loss of oval metallic waveguide, aWGIndicate the transmission loss of elliptical waveguide, ar
Indicate the radiation loss of oval metallic waveguide, the size of radiation loss is related with the notch shape and size of sewing hole 2, generally
The value range of radiation loss is 0.05aWG≤ar≤0.2aWG；Wherein, the transmission loss a of elliptical waveguideWGCalculation formula such as
Under:
In formula (5), p indicates the resistivity of waveguide material, p0The resistivity for indicating copper material, in the present embodiment, p0Value is
1.7241x10-8Ω ﹒ m, t are elliptic flexible waveguide copper strips thickness, and a is waveguide inner section width, and a=A-t, b are that waveguide inner section is high
Degree, b=B-t, fcFor dominant waveguide transmission mode TE10Or H10Cutoff frequency, f be the corresponding frequency of transmission loss calculated, together
Under one frequency, transmission loss is smaller, and transmission performance is better.
When radiofrequency signal is injected in the present embodiment, first wave conduit 1 to the wave of external radiation be mainly vertically polarized wave,
Horizontal polarized wave is relatively weak, and car antenna have stronger directionality, same place using vertical polarized antenna into
When row signal receives, as shown in Figure 5 and Figure 6, received vertically polarized wave signal is better than horizontal polarized wave 20dB or more,
So will not be interfered to vertically polarized wave signal in same place horizontal polarized wave signal；The 3 outside spoke of institute of second waveguide pipe
The wave penetrated is mainly horizontal polarized wave, and vertically polarized wave is relatively weak, and car antenna has stronger directionality, same
When place carries out signal reception using horizontally-polarized antenna, as shown in Figure 7 and Figure 8, the horizontal polarized wave signal received is eager to excel
In vertically polarized wave 20dB or more, so, horizontal polarized wave signal will not be caused to do in same place vertically polarized wave signal
It disturbs；When carrying out reception wireless signal according to dual polarized antenna in the utility model, according to Fig. 5 and Fig. 7 simulation result,
Horizontal polarization intensity of wave received by same place differed with vertical polarization intensity of wave be no more than 2dB, make first wave conduit and
Signal strength caused by hole of sewing in second waveguide pipe on any one waveguide all has good flat surface, facilitates
MIMO technology is realized.
Embodiment two:
As shown in figure 9, the difference between this embodiment and the first embodiment lies in, set vertical polarization is sewed on first wave conduit 1
Hole group includes an oblique strip-shaped hole 8, the angled folder for θ in central axes of oblique strip-shaped hole 8 and the wide face in 1 front end of first wave conduit
Angle, and the midpoint of oblique strip-shaped hole 8 is arranged on the central axes of first wave conduit 1；8 structure of oblique strip-shaped hole of two adjacent groups
Radial bilateral symmetry identical and along second waveguide pipe 3.
It includes that multiple continuous types being continuously disposed on wave crest are sewed that set horizontal polarization, which sews hole group, on second waveguide pipe 3
Hole 9 is equipped with a continuous type on that is, each wave crest and sews hole 9, and continuous type sews hole 9 along the axis in the wide face of second waveguide pipe 3
Line arrangement；The shape that continuous type sews hole 9 includes ellipse, rectangle or circle etc., rectangular opening is used in the present embodiment, and continuous
The vertical middle line that type sews hole 9 is consistent with the ripple direction of second waveguide pipe 3.
The range of oblique strip-shaped hole 8 or the long side length of rectangular opening is in the present embodiment
Wherein, d indicates the long side length of oblique strip-shaped hole 8 or rectangular opening, and λ is wavelength of the wave in free space, λgFor waveguide wavelength, d
Value range be 5mm≤d≤25mm；Oblique strip-shaped hole 8 or rectangular opening are equipped with chamfering in the angle of long side and broadside,
The value range of angular radius R isC indicates the width edge length of oblique strip-shaped hole 8 or rectangular opening.
It is respectively equipped with a carrier cable 6 in the upper end of first wave conduit 1 and the lower end of second waveguide pipe 3, carrier cable 6 is by interior
To outside successively including wirerope 6a and wirerope sheath 6b, wirerope sheath 6b is connected as one with oversheath 5.Utilize oval metal waveguide
Good, the light-weight feature of curvature it is practical new that this can be realized by the way that carrier cable 6 is fastened on the installation sites such as tunnel wall
The convenient installation of type, can be both fixed on the wall as leakage coaxial cable by suspender, can also be as rectangle leaky waveguide
Pipe is equally laid in orbit, and mounting means is flexible, and easy for installation.
The present embodiment is by sewing unit for vertical polarization and horizontal polarization sews unit respectively along oval metallic waveguide
Length direction be uniformly arranged on the wide face in front end of two oval metallic waveguides, make on any one oval metallic waveguide
It sews signal strength caused by hole and all has good flatness, the reception field strength difference of 50% probability and 95% probability is less than
2dB is better adapted to the transmission of car-ground radio signal, meets the use demand of MIMO technology, meets the development of the communication technology
Trend.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that,
It can still modify to technical solution documented by previous embodiment, or to some or all of the technical features
It is equivalently replaced, and these are modified or replaceed, the utility model embodiment that it does not separate the essence of the corresponding technical solution
The range of technical solution.
Claims (7)
1. a kind of ellipse with dual polarised radiation mould sews flexible waveguide, it is characterised in that: including two ellipses disposed in parallel
Metallic waveguide, the bellows that oval metallic waveguide uses embossing moulding process to be formed are equal outside two oval metallic waveguides
It is arranged between oversheath and two oversheaths and is connected as one by dowel；It is described two ellipse metallic waveguides it is same
The vertical polarization that radiation vertically polarized wave is respectively provided on side end face sews unit and the water for radiation level polarized wave
Mean pole sews unit, and vertical polarization sews vertically polarized wave and level caused by unit and sews horizontal pole caused by unit
The field strength changed between wave differs 20dB or more；
It includes the multiple groups vertical pole evenly distributed along the length direction of oval metallic waveguide that the vertical polarization, which sews unit,
Hole group is sewed in change；If the pitch that two adjacent groups vertical polarization sews hole group is P, thenM is integer, and 1≤m≤10, λ
For wavelength of the electromagnetic wave under corresponding frequency of use in oval metal waveguide；It includes N number of along ellipse that every group of vertical polarization, which sews group,
The vertical polarization of circle metallic waveguide length direction setting sews hole, 1≤N≤10；
It includes the multiple groups horizontal pole evenly distributed along the length direction of oval metallic waveguide that the horizontal polarization, which sews unit,
Hole group is sewed in change, if the pitch that two adjacent groups horizontal polarization sews hole group is P ', thenM is integer, and 1≤m '
≤ 10, λ are wavelength of the electromagnetic wave under corresponding frequency of use in oval metal waveguide；It includes N ' that every group of vertical polarization, which sews group,
A vertical polarization along the setting of oval metallic waveguide length direction sews hole, 1≤N '≤10.
2. the ellipse according to claim 1 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: set oval gold
The termination frequency for belonging to flexible waveguide is fstopIf the major diameter length of any ellipse metal waveguide tube chamber cross section is A,
Minor axis diameter length is B, then the value range of major diameter length is 25.5mm≤A≤108.5mm, and minor axis diameter length takes
Value range is 12.5mm≤B≤65.5mm, corresponding termination frequency fstopValue range be 2.5GHz≤fstop≤
11.7GHz。
3. the ellipse according to claim 2 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: described appoints
The value range of the major diameter length of one oval metal waveguide tube chamber cross section is 48.5mm≤A≤50.5mm, and short axle is straight
The value range of electrical path length is 27.5mm≤B≤30mm, corresponding termination frequency fstopValue range be 4.6GHz≤fstop
≤6.6GHz。
4. the ellipse according to claim 2 or 3 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: set institute
Wider two side external surface of oval metallic waveguide is stated as wide face, two relatively narrow side external surfaces of oval metallic waveguide are leptoprosopy,
The wide face of two oval metallic waveguides is arranged towards front and back, and vertical polarization sews unit and horizontal polarization sews unit difference
It is arranged on the wide face in the same side of two oval metallic waveguides.
5. the ellipse according to claim 4 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: described two
The set pass for sewing hole sews hole, " vertical bar type sews hole ", " eight " font using line-styled on a ellipse metallic waveguide
It sews hole or continuous type sews any two kinds in hole；
It is the lateral strip-shaped hole for being parallel to oval metallic waveguide length direction, line-styled leakage that the line-styled, which sews hole,
Hole is let out staggeredly to be successively set on up and down on the end face of corresponding oval metallic waveguide；
Described " eight " font sews oblique strip-shaped hole of the hole for the length direction of middle line and oval metallic waveguide in angle theta,
Same group of oblique strip-shaped hole is parallel to each other, and is located at same with the bottom end of the oblique strip-shaped hole of group and is parallel to oval metal wave
On the straight line in catheter length direction, the oblique bar shaped pore structure of two adjacent groups it is identical and along the diameter of oval metal flexible waveguide to the left and right
Symmetrically；
It is the vertical strip-shaped hole perpendicular to oval metallic waveguide length direction, same group vertical that the vertical bar type, which sews hole,
The bottom end of strip-shaped hole is located at same and is parallel on the straight line of oval metallic waveguide length direction；
The continuous type is sewed hole and is arranged on the wave crest of oval metallic waveguide, and same group of continuous type sews hole difference
Setting is sewed on the identical multiple continuous wave crests of hole number with continuous type.
6. the ellipse according to claim 4 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: the outer shield
The carrier cable for being equipped with and being parallel to oval metallic waveguide is put on, carrier cable successively includes wirerope and wirerope sheath, steel from the inside to the outside
Cable sheath is connected as one with oversheath.
7. the ellipse according to claim 6 with dual polarised radiation mould sews flexible waveguide, it is characterised in that: the load
Rope is disposed over the lower section of the above and or below oversheath of oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820815253.8U CN208226098U (en) | 2018-05-29 | 2018-05-29 | A kind of ellipse with dual polarised radiation mould sews flexible waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820815253.8U CN208226098U (en) | 2018-05-29 | 2018-05-29 | A kind of ellipse with dual polarised radiation mould sews flexible waveguide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208226098U true CN208226098U (en) | 2018-12-11 |
Family
ID=64507214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820815253.8U Active CN208226098U (en) | 2018-05-29 | 2018-05-29 | A kind of ellipse with dual polarised radiation mould sews flexible waveguide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208226098U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615980A (en) * | 2018-05-29 | 2018-10-02 | 通号电缆集团有限公司 | A kind of ellipse with dual polarised radiation mould sews flexible waveguide |
| CN109795524A (en) * | 2019-01-14 | 2019-05-24 | 北京交通大学 | A kind of vacuum pipe flying train communication system |
| CN113346247A (en) * | 2021-06-30 | 2021-09-03 | 中国铁塔股份有限公司 | Leakage cable system |
| CN113471707A (en) * | 2021-07-26 | 2021-10-01 | 江苏亨鑫科技有限公司 | Ultra-wideband leaky coaxial cable designed by array source |
| CN114696103A (en) * | 2020-12-31 | 2022-07-01 | 江苏俊知技术有限公司 | Leaky circular waveguide module suitable for MIMO technology and manufacturing method thereof |
| CN114696104A (en) * | 2020-12-31 | 2022-07-01 | 江苏俊知技术有限公司 | Leaky coaxial cable assembly suitable for 5G communication and manufacturing method thereof |
-
2018
- 2018-05-29 CN CN201820815253.8U patent/CN208226098U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108615980A (en) * | 2018-05-29 | 2018-10-02 | 通号电缆集团有限公司 | A kind of ellipse with dual polarised radiation mould sews flexible waveguide |
| CN109795524A (en) * | 2019-01-14 | 2019-05-24 | 北京交通大学 | A kind of vacuum pipe flying train communication system |
| CN114696103A (en) * | 2020-12-31 | 2022-07-01 | 江苏俊知技术有限公司 | Leaky circular waveguide module suitable for MIMO technology and manufacturing method thereof |
| CN114696104A (en) * | 2020-12-31 | 2022-07-01 | 江苏俊知技术有限公司 | Leaky coaxial cable assembly suitable for 5G communication and manufacturing method thereof |
| CN114696103B (en) * | 2020-12-31 | 2024-03-08 | 江苏俊知技术有限公司 | Leaky circular waveguide assembly suitable for MIMO technology and manufacturing method thereof |
| CN114696104B (en) * | 2020-12-31 | 2024-03-26 | 江苏俊知技术有限公司 | Leaky coaxial cable assembly suitable for 5G communication and manufacturing method thereof |
| CN113346247A (en) * | 2021-06-30 | 2021-09-03 | 中国铁塔股份有限公司 | Leakage cable system |
| CN113346247B (en) * | 2021-06-30 | 2023-07-25 | 中国铁塔股份有限公司 | Leaky cable system |
| CN113471707A (en) * | 2021-07-26 | 2021-10-01 | 江苏亨鑫科技有限公司 | Ultra-wideband leaky coaxial cable designed by array source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208226098U (en) | A kind of ellipse with dual polarised radiation mould sews flexible waveguide | |
| CN105789799B (en) | A kind of comprehensive carrying communication system leaky waveguide of rail transit field wireless transmission | |
| CN214124128U (en) | 8-shaped leaky coaxial cable assembly | |
| CN108615980A (en) | A kind of ellipse with dual polarised radiation mould sews flexible waveguide | |
| CN101393786B (en) | Leak coaxial cable | |
| CN107706536A (en) | A kind of dual polarization leakage coaxial cable | |
| CN206516741U (en) | A kind of dual polarization leaky waveguide | |
| CN214124127U (en) | Novel leaky circular waveguide component | |
| CN101950838A (en) | Leaky coaxial cable | |
| CN207282729U (en) | A kind of dual polarization leakage coaxial cable | |
| CN201303038Y (en) | Short pitch staggered hybrid open slot radiation leakage coaxial cable | |
| CN106848521A (en) | A kind of dual polarization leaky waveguide | |
| CN203433897U (en) | Photoelectric mixed cable for wireless remote radio unit | |
| CN204011625U (en) | A kind of leaky coaxial cable | |
| CN108461883A (en) | A kind of circular polarisation ellipse with radiation mode sews flexible waveguide | |
| CN107147221A (en) | The spiral LHM in hexagon concave surface and transmission line of electricity energy transmission system | |
| CN207690976U (en) | A kind of ellipse sews flexible waveguide | |
| CN203690464U (en) | Wide frequency leaky coaxial cable without resonance point in application range | |
| CN202333103U (en) | Wide-band leaky coaxial cable | |
| CN214124129U (en) | Integrally formed leaky coaxial cable assembly | |
| CN206451519U (en) | A kind of resist bending wideband radial leak coaxial cable | |
| CN201789055U (en) | Leaky coaxial cable | |
| CN208142326U (en) | A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide | |
| CN114696102B (en) | Parallel leaky coaxial cable assembly and manufacturing method thereof | |
| CN108258375A (en) | A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |