CN208142326U - A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide - Google Patents
A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide Download PDFInfo
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- CN208142326U CN208142326U CN201820201990.9U CN201820201990U CN208142326U CN 208142326 U CN208142326 U CN 208142326U CN 201820201990 U CN201820201990 U CN 201820201990U CN 208142326 U CN208142326 U CN 208142326U
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Abstract
The utility model discloses a kind of, and the horizontal polarization ellipse with radiation mode sews flexible waveguide, including oval metal flexible waveguide and oversheath, along being axially arranged with, a row is equally distributed to sew hole group in oval metal flexible waveguide, it includes N number of sewing hole that every group, which is sewed Kong Jun, the middle line for each sewing hole is each perpendicular to the axial setting of oval metal flexible waveguide, it is radiation modular form by way of sewing hole group and covering electromagnetic wave outward, and the electromagnetic wave covered outward is horizontal polarized wave；The utility model can be matched with horizontally-polarized antenna, suitable for high band electromagnetic wave propagation and frequency point ranges it is wide, it can satisfy 5G mobile communication and the following higher communications band use, signal covering is using radiation modular form, small with transmission loss, small advantage is uniformly fluctuated in covering when by sewing the outside radiation level polarized wave in hole.
Description
Technical field
The utility model relates to wirelessly communicate and signal transmission technology field more particularly to a kind of level with radiation mode
Polarization ellipse sews flexible waveguide.
Background technique
Currently, homologous ray does not need to cause China using different wireless frequencies with the development of wireless communication technique
Current wireless communication frequency resource is very in short supply, in the premise that the wireless communication frequency band below of 3GHz at this stage has all been saturated
Under, the communications industry is also trying to explore and is seeking how to utilize the radio frequency resources of higher frequency.Ministry of Industry and Information has sent the documents
The initial frequency range for specifying the 5th generation ternational Mobile Telecommunications system (IMT-2020), intend 3300~3600MHz and 4800~
Dispose 5G network in two frequency ranges of 5000MHz, and domestic three big operators also while all the planning for actively carrying out 5G network with
Deployment, and according to domestic and international analysis expert, it is 10 years following in the wireless communication frequency that will use needed for the communications industry will reach 6~
10GHz, therefore, the development of the 6~10GHz frequency band also deep favor by the communications industry.It is sent out in future wireless system to high-frequency
It opens up under this overall background, hardware device matched with high-frequency network also has great development potentiality.
Leakage coaxial cable is mostly used to carry out the transmission of signal and cover in the wireless communication system of 3GHz or less communications band
Lid, the architectural characteristic of radio frequency coaxial-cable determine that it can only meet 3GHz or less communications band use at this stage, if 6~
It is used under 10GHz communications band, must just use the lesser coaxial cable of specification, but correspondingly, transmission loss can sharply increase
Greatly, transmission range can shorten, and be unable to satisfy the requirement of system covering.
Currently, the wireless signal transmission workable for 5GHz frequency range and the means of covering are antenna for base station and rectangle leaky wave
It leads, they are respectively present following defect：1, for antenna for base station, five meters or so of mast suspension antenna is needed to configure, is caused
It is serious to destroy urban, and later maintenance is difficult, incurs municipal sector and denounces, meanwhile, base is used if it is in open location
Station antenna carries out signal transmission and covering, can cause to interfere with each other with the WiFi signal of civilian 5GHz, transmission performance is poor；2, for
Rectangle leaky waveguide, although rectangle leaky waveguide is better than leakage coaxial cable in terms of the transmission of signal of communication and covering,
Because of the characteristics of rectangular section, rectangle leaky waveguide can only be made into straight tube and the factors such as can not be bent, transported and carry
Influence, single rectangle leaky waveguide longest can only accomplish 12 meters or so at present, and when laying needs to leak by setting in rectangle
The ring flange for letting out waveguide both ends is connected paragraph by paragraph, and when later maintenance is also required to tear open several sections of neighbouring front and back rectangle leaky waveguide
Falling can just carry out, and every place's tie point need to install 8~14 screws, and every kilometer of tie point be about at 80 more than, also just anticipate
Taste one kilometer of rectangle leaky waveguide of every laying or disassembly just need to install thousand screws, not only construction task is heavy, and
And tie point excessively also causes great hidden danger, also, the heat of rectangle leaky waveguide to the communication security of entire communication network
Swollen shrinkage phenomenon is extremely serious, and according to statistics, it is big that 300 meters of line length expanding with heat and contract with cold just can reach 700mm, such connection method
Easily being pulled loose at orchid leads to the dampness water inlet of rectangle leaky waveguide；The sewing 12 meters of length in the narrow environments such as subway tunnel
Waveguide is carried to trackside and is inconvenient, and cannot be hoisted to trackside at disk as leakage coaxial cable, can only use and manually remove
Fortune, manpower waste is serious, and working efficiency is extremely low, in addition, being influenced by complicated metro environment, rectangle leaky waveguide is highly prone to arrange
The galvano-cautery of vehicle DC power-supply system and because of the chemical attack that environment generates, since rectangle leaky waveguide is only to sewing hole
Wide face is protected, once the phenomenon that corrosion damage occurs in its excess-three face, just will appear the hidden danger of communication system paralysis.
Ellipse, which sews flexible waveguide institute, can be divided into coupled mode and radiation mode two major classes to external leakage electromagnetic wave, although coupled mode shape
The advantages of covering of formula electromagnetic wave has service band wider, and resonance frequency is not present, and technique is easily realized, still, radial effect
Distance is shorter, and coupling loss is larger, and performance is not optimized under specific frequency.Radiating the covering of modular form electromagnetic wave has diameter
Farther out to operating distance, coupling loss is smaller, and performance indexes has been optimized under specific frequency, but service band
There is a certain range, there are resonance frequency, technique realization is more complicated, therefore, how to meet remote radial effect and width simultaneously
The use demand of frequency band is the significant problem currently to be solved.
Utility model content
The purpose of the utility model is to provide a kind of, and the horizontal polarization ellipse with radiation mode sews flexible waveguide, can be with water
Flat poliarizing antenna matches, be suitable for high band electromagnetic wave propagation and frequency point ranges it is wide, can satisfy 5G mobile communication with
And the following higher communications band uses, signal covering has transmission loss small, by sewing the outside spoke in hole using radiation modular form
When penetrating horizontal polarized wave covering uniformly fluctuate small advantage, and good bending property, can lopping be coiled on Electric cable coil, no
The length for only substantially increasing single waveguide greatly reduces the tie point in unit distance, improves the communication security of waveguide,
And convenient transportation, it is laid with simply, reduces manpower waste, improve laying working efficiency.
The technical solution adopted in the utility model is：
A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide, including oval metal flexible waveguide and is set in ellipse
Oversheath outside technology flexible waveguide, the bellows that the ellipse metal flexible waveguide uses embossing moulding process to be formed, feature exist
In：A row is equally distributed to sew hole group along being axially arranged in the ellipse metal flexible waveguide, and it includes N number of leakage that every group, which is sewed Kong Jun,
Hole is let out, the middle line for each sewing hole is each perpendicular to the axial setting of oval metal flexible waveguide, covers electricity outward by sewing hole group
The form of magnetic wave is radiation modular form, and the electromagnetic wave covered outward is horizontal polarized wave；
If it is P that two adjacent groups, which sew the pitch between hole, thenM is integer, and 1≤m≤10, λ are oval leakage
The electromagnetic wave under flexible waveguide institute frequency of use is let out in the oval wavelength sewed in flexible waveguide；
If the major diameter of oval metal flexible waveguide cross section is A, the minor axis diameter of oval metal flexible waveguide cross section is
B, major diameter A and minor axis diameter B meet condition be：
A>B and A ≈ 2kB (1)
In formula (1) and (2), k is that ellipse sews flexible waveguide diameter correction factor, and the value range of k is 0.8~1, k1For
Ellipse sews flexible waveguide embossing correction factor, k1Value range be 0.8~1, ctFor free space electromagnetic wave propagation speed,
fstopThe termination frequency of flexible waveguide is sewed for ellipse.
The value range of the major diameter A is 25.5mm≤A≤108.5mm, the value range of minor axis diameter B
12.5mm≤B≤65.5mm, the value range that ellipse sews flexible waveguide frequency of use is 2.5GHz~11.7GHz.
The value range of the major diameter A is 48.5mm≤A≤50.5mm, and the value range of minor axis diameter B is
27.5mm≤B≤30.0mm, the value range that ellipse sews the frequency of use of flexible waveguide is 5.3GHz~6.6GHz.
The hole of sewing is that rectangle sews hole, if it is length that rectangle, which sews hole perpendicular to the side of oval metal flexible waveguide axial direction,
Side is constituted if it is broadside that rectangle, which sews hole to be parallel to the side of oval metal flexible waveguide axial direction, in adjacent long side and broadside
Right angle joint is equipped with chamfering；If long side length is d, the calculation formula of long side length d is：
In formula (3), λ is wavelength of the wave in free space, λgFor waveguide wavelength；Wherein, waveguide wavelength λgCalculation formula
For：
In formula (4), λcFor cutoff wavelength.
The value range of the long side length d is 5mm≤d≤25mm.
If the width edge length that rectangle sews hole is c, the value range of the width edge length c is 1mm≤c≤10mm.
If the chamfer radius between adjacent long edges and broadside is R, the value range of chamfering R is
The rectangle sews the long side length in hole and subsection setup on flexible waveguide axial direction is sewed on width edge length edge.
The utility model has the advantages that：
(1) by the way that a row is equally distributed to sew hole group along being axially arranged in oval metal flexible waveguide, every group is sewed hole
Group sews hole including N number of, and the value range design of quantity N, long side d, broadside c, chamfering R and pitch P by sewing hole make this
The frequency of use of utility model is up to 10GHz, realizes the transmission of high-frequency wireless signal, meet 5G network and 6~
The use demand of 10GHz frequency band network, and transmission loss can be substantially reduced, relative to 1-5/8, " leaky cable exists
Transmission loss is as high as 6dB/100m and 1/2 " leaky cable transmission loss under 5.8GHz frequency and is up to 35dB/ when 2.4GHz
100m, the utility model transmission loss under 5.8GHz frequency are only 5dB/100m, transmission performance it is with the obvious advantage；
(2) by the embossing structure of oval metal flexible waveguide, the bending property of the utility model is greatly strengthened, makes it can
It with lopping is coiled on Electric cable coil, joint length is long, not only facilitates transport and carrying, has broken original rectangle and has sewed
Waveguide cannot grow manpower caused by the limitation and carrying of section transport and waste, and reduce the points of the connection in unit distance
Amount, substantially increase laying efficiency, reduce manpower waste, and be laid with place flexibly can trackside laying can also be along tunnel ledge
If will not be impacted to the maintenance of other systems；
(3) by the design of oversheath, flexible waveguide is sewed to ellipse and carries out comprehensive protection, effectively avoids complexity
The corrosion that environment sews flexible waveguide to ellipse damages, and high degree strengthens waterproof moisture-proof effect, unimpeded to protect communication, it is ensured that
Traffic safety；
(4) by sewing the design of hole number and structure and pitch, so that the ellipse of the utility model is sewed flexible waveguide and exist
There is lower coupling loss when antenna level receives, and be only ± 2dB to the fluctuation of the horizontal polarized wave of external radiation, fluctuation is small,
Steady signal transmission；
(5) it sews and is segmented on flexible waveguide axial direction by long side length and width edge length edge that rectangle is sewed to hole
Setting, realizes the segmented compensation of radiation field intensity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is every group of structural schematic diagram for sewing ellipse metal flexible waveguide when Kong Zuzhong sews hole comprising one；
Fig. 3, which is every group, sews the structural schematic diagram that Kong Zuzhong includes ellipse metal flexible waveguide when two or more sews hole；
Fig. 4 sews the coupling loss under flexible waveguide horizontal polarized wave in the ellipse of 5800MHz frequency for the utility model and imitates
True figure；
Fig. 5 sews the coupling loss under flexible waveguide horizontal polarized wave in the ellipse of 5800MHz frequency for the use of the new type and surveys
Attempt.
Description of symbols：
1, oval metal flexible waveguide；2, oversheath；3, hole 3 is sewed.
Specific embodiment
The utility model in order to better understand with reference to the accompanying drawing does furtherly the technical solution of the utility model
It is bright.
As shown in Figure 1, the utility model includes oval outer shield metal flexible waveguide 1 and be set in outside ellipse technique flexible waveguide
Set 2, oval metal flexible waveguide 1 use the bellows of embossing moulding process formation, and edge is axially arranged in oval metal flexible waveguide 1
One row is equally distributed to sew hole group, sews hole 3 for every group and sews hole 3 including N number of, the middle line for each sewing hole 3 is each perpendicular to
The axial setting of oval metal flexible waveguide 1 is radiation modular form by way of sewing hole group and covering electromagnetic wave outward, and outward
The electromagnetic wave of covering is horizontal polarized wave；
If it is P that two adjacent groups, which sew the pitch between hole 3, thenM is integer, and 1≤m≤10, λ are oval leakage
The electromagnetic wave under flexible waveguide institute frequency of use is let out in the oval wavelength sewed in flexible waveguide；
If the major diameter of oval 1 cross section of metal flexible waveguide is A, the minor axis diameter of oval 1 cross section of metal flexible waveguide
It is for B, major diameter A and minor axis diameter the B condition met：
A>B and A ≈ 2kB (1)
In formula (1) and (2), k is that ellipse sews flexible waveguide diameter correction factor, and the value range of k is 0.8~1, k1For
Ellipse sews flexible waveguide embossing correction factor, k1Value range be 0.8~1, ctFor free space electromagnetic wave propagation speed,
fstopThe termination frequency of flexible waveguide is sewed for ellipse.The value range of major diameter A is 25.5mm≤A≤108.5mm, and short axle is straight
Value range 12.5mm≤B≤65.5mm of diameter B, so that ellipse is sewed flexible waveguide makes in 2.5GHz~11.7GHz frequency range
With use scope is wide, it is furthermore preferred that major diameter A is chosen in 48.5mm≤A≤50.5mm value range, short axle is straight
Diameter B chooses in 27.5mm≤B≤30.0mm value range, makes the value range of the oval frequency of use for sewing flexible waveguide
5.3GHz~6.6GHz.
Embodiment one：
As the first preferred embodiment, preferably major diameter A=49.35mm,That is B=28.75mm, it is ellipse
Circle sews the termination frequency f of flexible waveguidestopThe value of selection is selected as 5.8x106Hz；
As shown in Fig. 2, setting two adjacent groups sews the pitch between hole 3 as P, thenM is integer, and 1≤m≤
10, λ sew the electromagnetic wave under flexible waveguide institute frequency of use in the oval wavelength sewed in flexible waveguide for ellipse；Sew the use of hole 3
Rectangle sews hole, and every group is sewed hole 3 and sew hole 3, i.e. N=1 comprising one, if rectangle sews hole perpendicular to the soft wave of oval metal
Leading 1 axial side is long side, and long side length is set as d, if rectangle sews hole and is parallel to the axial side of oval metal flexible waveguide 1 and is
Broadside, width edge length are set as c, are equipped with chamfering in the right angle joint that adjacent long side and broadside are constituted, chamfer radius is set as
R；Rectangle sews long side length, width edge length and the angle theta in hole along subsection setup on flexible waveguide axial direction is sewed, and realizes spoke
Penetrate the segmented compensation of field strength.
The calculation formula of long side length d is：
In formula (3), λ is wavelength of the wave in free space, λgFor waveguide wavelength；Wherein, waveguide wavelength λgCalculation formula
For：
In formula (4), λcFor cutoff wavelength.
The value range of long side length d is 5mm≤d≤25mm, and the value range of width edge length c is 1mm≤c≤10mm,
The value range of chamfering R is
Assessment ellipse sews the quality of flexible waveguide radiance, is generally examined by the coupling loss under certain probability
Core.It sews hole 3 and cuts off the oval conduction electric current sewed on flexible waveguide inner wall, electric field is generated on sewing hole 3, and sew to ellipse
Flexible waveguide wall currents generate disturbance, and sew from ellipse to free space radiant section electromagnetic energy in flexible waveguide, and with
The difference for sewing 3 position of hole and shape and size, it is also different by the polarization waveshape from hole 3 to external radiation and field strength of sewing,
Sewed designed by the utility model hole 3 to the polarization waveshape of external radiation be horizontal polarized wave, with horizontal polarization coupled antenna
It is used cooperatively.
It is illustrated below with sewing the coupling loss of hole 3 and car antenna：
It sews hole 3 and the coupling loss of car antenna is acquired by following equation：
In formula (4), LcIndicate coupling loss, unit is decibel, PtIndicate that ellipse sews the transimission power electricity in flexible 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 ellipse and sew flexible 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 that ellipse sews flexible waveguide is got over
It is good.
The quality of transmission performance generally judges that ellipse sews the transmission loss of flexible waveguide by following according to its transmission loss
Formula acquires：
aLWG=aWG+ar (6)
In formula (6), aLWGIndicate that ellipse sews the transmission loss of flexible waveguide, aWGIndicate the transmission loss of elliptical waveguide, ar
Indicate that ellipse sews the radiation loss of flexible waveguide, the size of radiation loss is related with the notch shape and size of sewing hole 3, 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 (7), p indicates the resistivity of waveguide material, and p indicates the resistivity of 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.
The utility model is mainly used in wireless communication and signal transmission covering system, each hop ellipse sew soft wave
In leading, radiofrequency signal is sewed from ellipse by signal source equipments such as base station or repeaters and is equipped with Waveguide coaxial turn in flexible waveguide
One end of parallel operation is injected, and a portion signal sews flexible waveguide internal transmission to the other end along ellipse, is installed in oval leakage
The waveguide match load for letting out flexible waveguide end all absorbs, and another part signal is sewed by ellipse and sews hole 3 in flexible waveguide
It lets out, is received by car antenna.
Compared to leakage coaxial cable, waveguide has that working frequency is high, transmission loss is small and coupling loss function admirable
Advantage, the utility model are used with sewing the oval metal flexible waveguide 1 in hole 3, the length range of long side be set as 5mm≤d≤
25mm, the length range of broadside is 1mm≤c≤10mm, and the value range of chamfer radius meetsNot only frequency of use
Up to 10GHz meets the trend of future mobile communications high frequency development, can be suitable for making for 5G and the above mobile communications network
With, and exist relative to 1-5/8 " leaky cable transmission loss in 2.4GHz is as high as 6dB/100m and 1/2 " leaky cable
Transmission loss is up to 35dB/100m under 5.8GHz frequency, and the utility model transmission loss under 5.8GHz frequency is only 5dB/
100m, as shown in Figure 4 and Figure 5, the utility model coupling loss when cooperating horizontally-polarized antenna to carry out signal transmission are small, signal
Fluctuate small, with good stability, transmission performance is with the obvious advantage, transmission loss well below traditional leakage coaxial cable,
Development prospect is good, and the requirement for meeting external equipment decay indices and coupling index is better achieved, and then ensure that practical
Novel transmission performance and coupling performance.
The oval metal flexible waveguide 1 of the utility model is formed using high-purity copper band or aluminium strip by argon arc welding welding embossing
It forms, the embossing structure of use largely enhances the bending property of the utility model, allows to the disk of lopping in electricity
On cable disk tool, compared to traditional rectangle leaky wave conduit, breaking rectangle leaky wave conduit cannot big office section transport and used
Limit, and reduce the tie point in unit distance.It sews every 500 meters of flexible waveguide by ellipse to be calculated for one section, every kilometer
Interior ellipse sews only one tie point of flexible waveguide, it is only necessary to and it connects once, and uses rectangle leaky waveguide, it is every according to 12 meters
Duan Jinhang is calculated, then at least needs to connect 84 times, therefore, the work of construction can be reduced to a great extent in the utility model
Amount improves working efficiency, moreover, if connection is improper at splicing point, it may appear that system voltage standing-wave ratio is higher, causes entirely logical
Believe system alarm paralysis, therefore, the splicing point the more, and the probability to break down a little is bigger, the safety generated to entire communication system
Hidden danger is also bigger, and the utility model high degree reduces the quantity of tie point, has also ensured entire communication system indirectly
Safe and stable operation.
Meanwhile the heavy construction task compared to traditional rectangle leaky wave conduit when being laid with, it is sewed at the ellipse of disk
Soft wave is soft to lead convenient in carrying, is laid with simply, greatly mitigates the workload of worker, and can further increase laying efficiency,
And the architectural characteristic that bending ability is strong, so that the utility model both can be passed through suspender as leakage coaxial cable and is fixed on wall
Wall can also be laid in orbit as rectangle leaky wave conduit, and laying environment is adaptable, and use scope is wide, before development
Jing great.
In addition, rectangle leaky wave conduit is waterproof and dampproof using carrying out by the way of sewing Continuous pressing device for stereo-pattern above hole 3 and covering plate
Processing does not have waterproof moisture-proof effect with the case where using the increase adhesive tape of time to will appear aging alice, moisture once into
Enter in waveguide cavity body, will lead to entire communication system paralysis, and is then in oval 1 peripheral hardware of metal flexible waveguide in the utility model
There is one layer of oversheath being fully sealed 2, moisture can be effectively prevent to enter ellipse and sewed inside flexible waveguide, waterproof and dampproof performance is excellent
It is different, and anti-aging property is good, and the long-term stable operation of the utility model has been effectively ensured in long service life, and then indirectly
The stable operation of entire communication system is ensured.
Embodiment two：
As shown in figure 3, the present embodiment and embodiment one are the difference is that every group is sewed the quantity that Kong Zuzhong sews hole 3
For 2, i.e. N=2, the length range of long side is set as 5mm≤d≤25mm, and the length range of broadside is 1mm≤c≤10mm, and
The value range of chamfer radius meetsPitchM is integer, and 1≤m≤10, λ are corresponding frequency of use
Lower corresponding electromagnetic wave sews the wavelength in flexible waveguide in ellipse.
Due to the working frequency of waveguide, transmission loss and coupling loss size all with arrangement, the notch shape of sewing hole 3
And size is related, is adjusted in the utility model by sewing the quantity of the quantity N in hole 3, cooperates long side d, broadside c and chamfering R
Value range design, makes the utility model can adapt to the use demand of different frequency range, and can be better achieved and meet outside
The requirement of equipment decay indices and coupling index, and then ensure that the transmission performance and coupling performance of the utility model.
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 (8)
1. a kind of horizontal polarization ellipse with radiation mode sews flexible waveguide, including oval metal flexible waveguide and it is set in oval skill
Oversheath outside art flexible waveguide, the bellows that the ellipse metal flexible waveguide uses embossing moulding process to be formed, it is characterised in that：
A row is equally distributed to sew hole group along being axially arranged in the ellipse metal flexible waveguide, and it includes N number of sew that every group, which is sewed Kong Jun,
Hole, the middle line for each sewing hole are each perpendicular to the axial setting of oval metal flexible waveguide, cover electromagnetism outward by sewing hole group
The form of wave is radiation modular form, and the electromagnetic wave covered outward is horizontal polarized wave；
If it is P that two adjacent groups, which sew the pitch between hole, thenM is integer, and 1≤m≤10, λ are that ellipse sews soft wave
The electromagnetic wave under institute's frequency of use is led in the oval wavelength sewed in flexible waveguide；
If the major diameter of oval metal flexible waveguide cross section is A, the minor axis diameter of oval metal flexible waveguide cross section is B, long
The condition that shaft diameter A and minor axis diameter B meet is：
A>B and A ≈ 2kB (1)
In formula (1) and (2), k is that ellipse sews flexible waveguide diameter correction factor, and the value range of k is 0.8~1, k1For ellipse
Sew flexible waveguide embossing correction factor, k1Value range be 0.8~1, ctFor free space electromagnetic wave propagation speed, fstop
The termination frequency of flexible waveguide is sewed for ellipse.
2. the horizontal polarization ellipse according to claim 1 with radiation mode sews flexible waveguide, it is characterised in that：The length
The value range of shaft diameter A be 25.5mm≤A≤108.5mm, value range 12.5mm≤B≤65.5mm of minor axis diameter B, it is ellipse
The value range that circle sews flexible waveguide frequency of use is 2.5GHz~11.7GHz.
3. the horizontal polarization ellipse according to claim 2 with radiation mode sews flexible waveguide, it is characterised in that：The length
The value range of shaft diameter A is 48.5mm≤A≤50.5mm, and the value range of minor axis diameter B is 27.5mm≤B≤30.0mm,
The value range that ellipse sews the frequency of use of flexible waveguide is 5.3GHz~6.6GHz.
4. the horizontal polarization ellipse according to claim 1 or 2 or 3 with radiation mode sews flexible waveguide, it is characterised in that：
The hole of sewing is that rectangle sews hole, if it is long side that rectangle, which sews hole perpendicular to the side of oval metal flexible waveguide axial direction, if rectangle
Sewing hole to be parallel to the side of oval metal flexible waveguide axial direction is broadside, in the right angle joint that adjacent long side and broadside are constituted
Equipped with chamfering；If long side length is d, the calculation formula of long side length d is：
In formula (3), λ is wavelength of the wave in free space, λgFor waveguide wavelength；Wherein, waveguide wavelength λgCalculation formula be：
In formula (4), λcFor cutoff wavelength.
5. the horizontal polarization ellipse according to claim 4 with radiation mode sews flexible waveguide, it is characterised in that：The length
The value range of edge lengths d is 5mm≤d≤25mm.
6. the horizontal polarization ellipse according to claim 4 with radiation mode sews flexible waveguide, it is characterised in that：If rectangle
The width edge length for sewing hole is c, and the value range of the width edge length c is 1mm≤c≤10mm.
7. the horizontal polarization ellipse according to claim 4 with radiation mode sews flexible waveguide, it is characterised in that：If adjacent
Chamfer radius between long side and broadside is R, and the value range of chamfering R is
8. the horizontal polarization ellipse according to claim 4 with radiation mode sews flexible waveguide, it is characterised in that：The square
Shape sews the long side length in hole and subsection setup on flexible waveguide axial direction is sewed on width edge length edge.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258375A (en) * | 2018-02-06 | 2018-07-06 | 通号电缆集团有限公司 | A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108258375A (en) * | 2018-02-06 | 2018-07-06 | 通号电缆集团有限公司 | A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide |
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