CN108258375A - 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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- CN108258375A CN108258375A CN201810115851.9A CN201810115851A CN108258375A CN 108258375 A CN108258375 A CN 108258375A CN 201810115851 A CN201810115851 A CN 201810115851A CN 108258375 A CN108258375 A CN 108258375A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
- H01P3/127—Hollow waveguides with a circular, elliptic, or parabolic cross-section
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
- H01P3/14—Hollow waveguides flexible
Abstract
The invention discloses a kind of horizontal polarization ellipses with radiation mode to sew flexible waveguide, including oval metal flexible waveguide and oversheath, oval metal flexible waveguide upper edge is axially arranged with that a row is equally distributed to sew hole group, it sews Kong Jun for every group and sews hole including N number of, each center line for sewing hole is each perpendicular to the axial setting of oval metal flexible waveguide, the form for covering electromagnetic wave outward by sewing hole group is radiation modular form, and the electromagnetic wave covered outward is horizontal polarized wave；The present invention can be matched with horizontally-polarized antenna, suitable for high band electromagnetic wave propagation and frequency point ranges it is wide, it disclosure satisfy that 5G mobile communication and following higher communications band use, signal covering is using radiation modular form, it is small with transmission loss, during by sewing the outside radiation level polarized wave in hole covering uniformly fluctuate the advantages of small.
Description
Technical field
The present invention relates to wireless communication and signal transmission technology field more particularly to a kind of horizontal polarizations with radiation mode
Ellipse sews flexible waveguide.
Background technology
At present, with the development of wireless communication technique, different system needs, using different wireless frequencies, to cause China
Current wireless communication frequency resource is very in short supply, in wireless communication frequency band all premises of saturation of below 3GHz at this stage
Under, the communications industry is also being tried to explore and is seeking how to utilize the radio frequency resources of higher frequency.Ministry of Industry and Information has sent the documents
Specify the initial frequency range of the 5th generation ternational Mobile Telecommunications system (IMT-2020), intend 3300~3600MHz and 4800~
Dispose 5G networks in two frequency ranges of 5000MHz, and domestic three big operators also while all the planning for actively carrying out 5G networks 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 6~10GHz frequency bands is also deep to be favored by the communications industry.It is sent out in future wireless system to high-frequency
It opens up under this overall background, also there is great development potentiality with the mating hardware device of high-frequency network.
The transmission of signal is mostly carried out using leakage coaxial cable in the wireless communication system of below 3GHz communications bands and is covered
Lid, the architectural characteristic of radio frequency coaxial-cable determine that it can only meet below 3GHz communications bands use at this stage, if 6~
It is used under 10GHz communications bands, must just use the smaller coaxial cable of specification, but correspondingly, transmission loss can drastically increase
Greatly, transmission range can shorten, and can not meet the requirement of system covering.
At present, wireless signal transmission and the means of covering are antenna for base station and rectangle leaky wave workable for 5GHz frequency ranges
It leads, they are respectively present following defect：1st, 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, use base if 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；2nd, for
Rectangle leaky waveguide, although rectangle leaky waveguide is better than leakage coaxial cable in terms of the transmission and covering of signal of communication,
Because of the characteristics of rectangular section, rectangle leaky waveguide can only make straight tube and the factors such as can not be bent, transported and carry
Influence, at present single rectangle leaky waveguide longest can only accomplish 12 meters or so, when laying, needs to leak by being arranged on 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 neighbouring front and rear several sections of rectangle leaky waveguides
Falling can just carry out, and 8~14 screws need to be installed by often locating tie point, and every kilometer of tie point be about at 80 more than, also just anticipate
Taste, which the often rectangle leaky waveguide of one kilometer of laying or dismounting, just to be needed to install thousand screws, and 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 causes rectangle leaky waveguide to be made moist into water；The sewing 12 meters of length in the narrow environments such as subway tunnel
Waveguide is carried to trackside and is inconvenient, it is impossible to be hoisted to trackside into 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 the chemical attack because of environment generation, since rectangle leaky waveguide only sews hole to carrying
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 sews flexible waveguide institute can be divided into two major class of coupled mode and radiation mode to external leakage electromagnetic wave, although coupled mode shape
The covering of formula electromagnetic wave has service band wider, there is no resonant frequency, the advantages of 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
To operating distance farther out, coupling loss is smaller, and property indices have been optimized under specific frequency, but service band
There is a certain range, there are resonant 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.
Invention content
The object of the present invention is to provide a kind of horizontal polarization ellipses with radiation mode to sew flexible waveguide, can be with horizontal pole
Change antenna to match, suitable for high band electromagnetic wave propagation and frequency point ranges it is wide, disclosure satisfy that 5G mobile communication and not
Carry out the use of higher communications band, signal covering has transmission loss small, by sewing hole to external radiation water using radiation modular form
During flat polarized wave covering uniformly fluctuate the advantages of small, and good bending property, can lopping be coiled on Electric cable coil, not only greatly
The length of single waveguide is improved greatly, greatly reduces the tie point in unit distance, improves the communication security of waveguide, and
Convenient transportation is laid with simply, is reduced manpower waste, is improved laying working efficiency.
The technical solution adopted by the present invention 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 ellipse metal flexible waveguide use the bellows that embossing moulding process is formed, and feature exists
In：The ellipse metal flexible waveguide upper edge is axially arranged with that a row is equally distributed to sew hole group, sews Kong Jun for every group and includes N number of leakage
Hole is let out, the center line for each sewing hole is each perpendicular to the axial setting of oval metal flexible waveguide, and electricity is covered 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 the pitch that two adjacent groups sew between hole is P, thenM is integer, and 1≤m≤10, λ are leaked to be oval
Let out wavelength of the electromagnetic wave in ellipse sews flexible waveguide under flexible waveguide institute frequency of use；
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 sews flexible waveguide diameter correction factor for ellipse, 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 12.5mm of minor axis diameter B
≤ B≤65.5mm, the value range that ellipse sews flexible waveguide frequency of use are 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 are 5.3GHz~6.6GHz.
Hole is sewed in the hole of sewing for rectangle, if it is length that rectangle, which sews hole perpendicular to the side of oval metal flexible waveguide axial direction,
Side if rectangle, which sews hole, is parallel to the side of oval metal flexible waveguide axial direction as broadside, is formed in adjacent long side and broadside
Right angle joint is equipped with chamfering；If long edge lengths are d, the calculation formula of long edge lengths d is：
In formula (3), λ is wave in the wavelength of free space, λgFor waveguide wavelength；Wherein, waveguide wavelength λgCalculation formula
For：
In formula (4), λcFor cutoff wavelength.
The value range of the long edge lengths 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 edge lengths in hole and subsection setup on flexible waveguide axial direction is sewed on width edge length edge.
The invention has the advantages that：
(1) row is equally distributed to sew hole group by being axially arranged in oval metal flexible waveguide upper edge, and every group is sewed hole
Group include it is N number of sew hole, designed, made by the value range for sewing the quantity N in hole, long side d, broadside c, chamfering R and pitch P
The frequency of use of invention is up to 10GHz, realizes the transmission of high-frequency wireless signal, meets 5G networks and 6~10GHz frequencies
The use demand of rate section network, and transmission loss can be substantially reduced, relative to 1-5/8, " leaky cable is in 2.4GHz
Transmission loss is as high as 6dB/100m and 1/2 " leaky cables transmission loss under 5.8GHz frequencies and is up to 35dB/100m, this hair
The bright transmission loss under 5.8GHz frequencies is only 5dB/100m, transmission performance it is with the obvious advantage；
(2) by the embossing structure of oval metal flexible waveguide, greatly strengthen the bending property of the present invention so that it can into
It encloses the land and is coiled on Electric cable coil, joint length is long, not only facilitates transport and carrying, has broken original rectangle leaky waveguide
Cannot grow section transport limitation and carrying caused by manpower waste, and reduce the tie point quantity in unit distance, greatly
Improve laying efficiency greatly, reduce manpower waste, and be laid with place flexibly can trackside laying can also be set up along tunnel wall, no
The maintenance of other systems can be impacted；
(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 ellipse flexible waveguide 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, the ellipse of the present invention is made to sew flexible waveguide in antenna
With relatively low coupling loss when level receives, and the horizontal polarized wave fluctuation to external radiation is only ± 2dB, and fluctuation is small, transmission
Signal stabilization；
(5) it sews and is segmented on flexible waveguide axial direction by long edge lengths and width edge length edge that rectangle is sewed to hole
Setting realizes the segmented compensation of radiation field intensity.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is every group of structure diagram for sewing ellipse metal flexible waveguide when Kong Zuzhong sews hole comprising one；
Fig. 3 is every group and sews the structure diagram that Kong Zuzhong includes ellipse metal flexible waveguide when two or more sews hole；
Fig. 4 sews the coupling loss analogous diagram under flexible waveguide horizontal polarized wave for the present invention in the ellipse of 5800MHz frequencies；
Fig. 5 is that the use of the new type is surveyed in the coupling loss that the ellipse of 5800MHz frequencies is sewed under flexible waveguide horizontal polarized wave
Attempt.
Reference sign：
1st, oval metal flexible waveguide；2nd, oversheath；3rd, hole 3 is sewed.
Specific embodiment
For a better understanding of the present invention, technical scheme of the present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention includes oval metal flexible waveguide 1 and the oversheath 2 being set in outside ellipse technique flexible waveguide,
The bellows that oval metal flexible waveguide 1 is formed using embossing moulding process, it is equal that oval 1 upper edge of metal flexible waveguide is axially arranged with a row
Hole group is sewed in even distribution, is sewed hole 3 for every group and is sewed hole 3 including N number of, and the center line for each sewing hole 3 is each perpendicular to oval gold
Belonging to the axial setting of flexible waveguide 1, the form for covering electromagnetic wave outward by sewing hole group is radiation modular form, and cover outward
Electromagnetic wave is horizontal polarized wave；
If the pitch that two adjacent groups sew between hole 3 is P, thenM is integer, and 1≤m≤10, λ are leaked to be oval
Let out wavelength of the electromagnetic wave in ellipse sews flexible waveguide under flexible waveguide institute frequency of use；
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 sews flexible waveguide diameter correction factor for ellipse, 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, ellipse is enable to sew flexible waveguide to be made in 2.5GHz~11.7GHz frequency ranges
With use scope is wide, it is furthermore preferred that major diameter A is chosen in the value range of 48.5mm≤A≤50.5mm, short axle is straight
Diameter B chooses in the value range of 27.5mm≤B≤30.0mm, makes the oval value range of frequency of use for sewing flexible waveguide be
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 selected as 5.8x10 of selection6Hz；
As shown in Fig. 2, setting two adjacent groups sews pitch between hole 3 as P, thenM is integer, and 1≤m≤
10, λ sew wavelength of the electromagnetic wave in ellipse sews flexible waveguide under flexible waveguide institute frequency of use for ellipse；Hole 3 is sewed to use
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
It is long side to lead 1 axial side, and long edge lengths are set as d, if it is width that rectangle, which sews hole to be parallel to the axial side of oval metal flexible waveguide 1,
Side, width edge length are set as c, are equipped with chamfering in the right angle joint that adjacent long side and broadside are formed, chamfer radius is set as R；
Rectangle sews long edge lengths, width edge length and the angle theta in hole along subsection setup on flexible waveguide axial direction is sewed, and realizes radiation
The segmented compensation of field strength.
The calculation formula of long edge lengths d is：
In formula (3), λ is wave in the wavelength of free space, λgFor waveguide wavelength；Wherein, waveguide wavelength λgCalculation formula
For：
In formula (4), λcFor cutoff wavelength.
The value range of long edge lengths 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 hole 3 is sewed, and ellipse is sewed
Flexible waveguide wall currents generate disturbance, and are sewed from ellipse to free space radiant section electromagnetic energy in flexible waveguide, and with
The difference of 3 position of hole and shape and size is sewed, it is also different by the polarization waveshape from hole 3 to external radiation and field strength of sewing,
Hole 3 is sewed to the polarization waveshape of external radiation for horizontal polarized wave designed by the present invention, is coordinated with horizontal polarization coupled antenna
It uses.
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), LcRepresent coupling loss, unit is decibel, PtRepresent that ellipse sews the transimission power electricity in flexible waveguide
Flat, unit is decibel milliwatt, PrRepresent the received power level of car antenna, unit is decibel milliwatt.
The locally coupled loss probability value of generally use 50% and 95% sews flexible waveguide radiance to weigh ellipse
Quality, i.e., the 50% locally coupled loss measured is less than the value and the 95% locally coupled loss measured is less than the value, same
In the case of probability value, coupling loss is smaller, and the received 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), aLWGRepresent that ellipse sews the transmission loss of flexible waveguide, aWGRepresent the transmission loss of elliptical waveguide, ar
Represent 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 represents the resistivity of waveguide material, and p represents 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 high for waveguide inner section
Degree, b=B-t, fcFor dominant waveguide transmission mode TE10Or H10Cutoff frequency, f is the corresponding frequency of transmission loss that is calculated, together
Under one frequency, transmission loss is smaller, and transmission performance is better.
Present invention is mainly applied to wirelessly communicate and signal transmission covering system, each hop ellipse sews flexible waveguide
In, radiofrequency signal is sewed from ellipse and waveguide coaxial connecter is equipped in flexible waveguide by signal source equipments such as base station or repeaters
One end injection of device, a portion signal sew flexible waveguide internal transmission to the other end along ellipse, are installed in ellipse and sew
The waveguide match load of flexible waveguide end all absorbs, and another part signal is sewed the hole 3 of sewing in flexible waveguide by ellipse and let out
It leaks, 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, for the present invention using with the oval metal flexible waveguide 1 for sewing hole 3, the length range of long side is set as 5mm≤d≤25mm, wide
The length range on side is 1mm≤c≤10mm, and the value range of chamfer radius meetsNot only frequency of use is up to
10GHz meets the trend of future mobile communications high frequency development, can be suitable for the use of 5G and more than mobile communications network, and
And relative to 1-5/8 " leaky cable transmission loss in 2.4GHz is as high as 6dB/100m and 1/2 " leaky cable in 5.8GHz
Transmission loss is up to 35dB/100m under frequency, and present invention transmission loss under 5.8GHz frequencies is only 5dB/100m, such as Fig. 4 and
Shown in Fig. 5, present invention coupling loss when horizontally-polarized antenna is coordinated to carry out signal transmission is small, and signal fluctuation is small, has good
Stability, transmission performance is with the obvious advantage, and transmission loss is well below traditional leakage coaxial cable, and development prospect is good, more
The requirement for meeting external equipment decay indices and coupling index is realized well, and then ensure that transmission performance and the coupling of the present invention
Performance.
The oval metal flexible waveguide 1 of the present invention using high-purity copper band or aluminium strip by argon arc welding weld embossing be molded and
Into the embossing structure of use largely enhances bending property of the invention so that it can which the disk of lopping is in Electric cable coil
On, compared to traditional rectangle leaky wave conduit, break rectangle leaky wave conduit cannot section is transported and used greatly limitation, and
Reduce the tie point in unit distance.Every 500 meters of flexible waveguide is sewed by ellipse to be calculated for one section, it is oval in every kilometer
Sewing flexible waveguide, only there are one tie points, it is only necessary to continue primary, and use rectangle leaky waveguide, be carried out according to 12 meters every section
It calculates, then at least needs to continue 84 times, therefore, the workload of construction can be reduced to a great extent in the present invention, improve work
Make efficiency, moreover, if connection is improper at splicing point, it may appear that system voltage standing-wave ratio is higher, leads to entire communication system report
Alert paralysis, therefore, the probability that splicing point more at most breaks down a little is bigger, to the security risk of entire communication system generation also
It is bigger, and high degree of the present invention reduces the quantity of tie point, has also ensured the safety and stability fortune of entire communication system indirectly
Row.
Meanwhile the heavy construction task compared to traditional rectangle leaky wave conduit when being laid with, the ellipse into disk are sewed
Soft wave is soft to lead convenient in carrying, is laid with simple, the greatly workload of mitigation worker, and can further improve laying efficiency,
And the architectural characteristic that bending ability is strong, the present invention is made both can be fixed on wall by suspender as leakage coaxial cable,
It can be laid in orbit as rectangle leaky wave conduit, laying environment is adaptable, and use scope is wide, and development prospect is big.
In addition, rectangle leaky wave conduit is waterproof and dampproof using being carried out by the way of Continuous pressing device for stereo-pattern capping plate is sewed above hole 3
Processing, will appear the situation of aging alice with the increases adhesive tape of usage time, not have a waterproof moisture-proof effect, moisture once into
Enter in waveguide cavity body, entire communication system can be caused to paralyse, and be then to be externally provided with one in oval metal flexible waveguide 1 in the present invention
The oversheath 2 that layer is fully sealed, can effectively prevent moisture to enter ellipse and sew inside flexible waveguide, waterproof and dampproof to have excellent performance,
And anti-aging property is good, and service life is long, and the long-term stable operation of the present invention has been effectively ensured, and then has ensured indirectly whole
The stable operation of a communication system.
Embodiment two：
As shown in figure 3, the quantity that the present embodiment sews Kong Zuzhong and sew hole 3 with embodiment one the difference lies in every group
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 is fallen
The value range of angular radius meetsPitchM is integer, and 1≤m≤10, λ is under corresponding frequency of use
Wavelength of the corresponding electromagnetic wave in ellipse sews flexible waveguide.
Due to arrangement, notch shape of the size using frequency range, transmission loss and coupling loss all with sewing hole 3 of waveguide
And size is related, is adjusted in the present invention by the quantity for the quantity N for sewing hole 3, the value of cooperation long side d, broadside c and chamfering R
Range designs, and enables the invention to adapt to the use demand of different frequency range, and can be better achieved and meet external equipment attenuation
The requirement of index and coupling index, and then ensure that the transmission performance and coupling performance of the present invention.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that, still may be used
Either which part or all technical features are equal with modifying to the technical solution recorded in previous embodiment
It replaces, and these modifications or replacement, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
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 ellipse metal flexible waveguide use the bellows that embossing moulding process is formed, it is characterised in that：
The ellipse metal flexible waveguide upper edge is axially arranged with that a row is equally distributed to sew hole group, sews Kong Jun for every group and includes N number of sew
Hole, the center line for each sewing hole are each perpendicular to the axial setting of oval metal flexible waveguide, electromagnetism are covered outward by sewing hole group
The form of wave is radiation modular form, and the electromagnetic wave covered outward is horizontal polarized wave；
If the pitch that two adjacent groups sew between hole is P, thenM is integer, and 1≤m≤10, λ sew soft wave for ellipse
Lead wavelength of the electromagnetic wave in ellipse sews flexible waveguide under institute's frequency of use；
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 sews flexible waveguide diameter correction factor for ellipse, 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 with radiation mode according to claims 1 or 2 or 3 sews flexible waveguide, it is characterised in that：
Hole is sewed in the hole of sewing for rectangle, if it is long side that rectangle, which sews hole perpendicular to the side of oval metal flexible waveguide axial direction, if rectangle
It sews hole and is parallel to the side of oval metal flexible waveguide axial direction as broadside, in the right angle joint that adjacent long side and broadside are formed
Equipped with chamfering；If long edge lengths are d, the calculation formula of long edge lengths d is：
In formula (3), λ is wave in the wavelength of 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：It is 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 edge lengths in hole and subsection setup on flexible waveguide axial direction is sewed on width edge length edge.
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| CN201810115851.9A CN108258375A (en) | 2018-02-06 | 2018-02-06 | A kind of horizontal polarization ellipse with radiation mode sews flexible waveguide |
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| CN201810115851.9A CN108258375A (en) | 2018-02-06 | 2018-02-06 | 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 |
|---|---|---|---|---|
| WO2022143347A1 (en) * | 2020-12-31 | 2022-07-07 | 江苏俊知技术有限公司 | Leaky circular waveguide assembly applicable to mimo technology, and manufacturing method therefor |
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2018
- 2018-02-06 CN CN201810115851.9A patent/CN108258375A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022143347A1 (en) * | 2020-12-31 | 2022-07-07 | 江苏俊知技术有限公司 | Leaky circular waveguide assembly applicable to mimo technology, and manufacturing method therefor |
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