CN209119352U - A kind of high XPD dual polarized antenna feed of ultra wide band - Google Patents
A kind of high XPD dual polarized antenna feed of ultra wide band Download PDFInfo
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- CN209119352U CN209119352U CN201821782848.4U CN201821782848U CN209119352U CN 209119352 U CN209119352 U CN 209119352U CN 201821782848 U CN201821782848 U CN 201821782848U CN 209119352 U CN209119352 U CN 209119352U
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Abstract
The utility model discloses a kind of high XPD dual polarized antenna feed of ultra wide band, it is characterized in that, include: working medium radiation head, circular waveguide tube, ultra wideband dual polarization separator, adjust screw, the working medium radiation head is mounted on circular waveguide tube one end, ultra wideband dual polarization separator is mounted on the circular waveguide tube other end, wherein the ultra wide band polarization separator includes metal tube and the standard rectangular waveguide mouth two set gradually thereon, polarization separation structure, square circle transformation structure, standard rectangular waveguide mouth one, adjusts the side that metal tube is arranged in screw.The utility model reduces the narrow limitation of frequency band caused by the polarization conversion of deutostoma, middle section is filtered by simple Shorted post by replacing rectangle to couple to circular window by square circle conversion；The radiant section of front is to carry out radiation matching by multistage step, and entire design has the characteristics that high-performance, ultra wide bandwidth.
Description
Technical field
The utility model relates to communication antenna equipment technical field more particularly to a kind of high XPD dual polarization days of ultra wide band
Line feed
Background technique
Parabola antenna is one of antenna type earliest in the antenna-feeder system of the communications field.Parabola antenna will be located at focus
The electromagnetic wave that feed is emitted reflects towards front and keeps same phase, to form high directivity wave beam, or by parallel beam
Converge at focus.High directivity is its most significant feature, therefore is often applied to high-gain occasion, as radio astronomy is looked in the distance
Mirror, satellite earth receiving station, fire control radar, microwave relay transmission etc..It is realized in a communications system frequently with parabola antenna
The aerial microwave link communication of large capacity.In recent years, LTE, return network institute are developed to from GSM, UMTS with cordless communication network
The carrying wideband requirements needed are growing.For telecom operators, the large carrying capacity of raising backbone network can be passed through
It is big to alleviate the nervous frequency resource of wireless transmission.Improve backbone network bearing capacity can by increase communication band bandwidth,
Outside by the way of these are general using multimode regulative mode, technology can also be reused using cross polarization frequency.Cross-pole
It is different using two cross polarization individual transmissions on a same frequency in same microwave link for changing frequency to reuse technology
Data-signal.Obviously in order to make on a polarization (such as vertical polarization) signal that transmits will not severe jamming another polarization
Transmission signal in (such as horizontal polarization), it is desirable that the XPD value of Transmission system is sufficiently high.The dual-polarized parabolic antenna of high XPD value
The market demand quietly give birth to.High XPD dual-polarized parabolic antenna is on the basis of original conventional parabola antenna, to XPD
(cross polarization discrimination) this index is put forward higher requirements, and to promote the anti-interference ability of its whole system, makes backbone network
Bearing capacity promoted significantly.The bandwidth of high XPD antenna currently on the market can only accomplish 8% substantially, seriously restrict antenna
Cost and the widebandization of network are laid out.Currently, high XPD antenna feed is mainly mutual by two by using the form of polarization rotary needle
After linear polarization Signal separator or synthesis in 90 °, launched by the radial chamber of front end, the structure application band of this form
Narrow bandwidth be a big defect.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of this utility model is to provide one kind, the processing is simple, performance is held
The high XPD dual polarized antenna feed for the ultra wide band easily realized.
To achieve the above objectives, the utility model adopts the following technical solution.
A kind of high XPD dual polarized antenna feed of ultra wide band characterized by comprising working medium radiation head, circular waveguide tube,
Ultra wideband dual polarization separator adjusts screw, and the working medium radiation head is mounted on circular waveguide tube one end, ultra wideband dual polarization separation
Device is mounted on the circular waveguide tube other end, wherein the working medium radiation head includes the interior cylindrical dielectric in axial direction set gradually
With section, pipe outer cone working medium radiation body, one end of pipe outer cone working medium radiation body is provided with circular cone bottom surface, the ultra wide band polarization
Separator includes metal tube and the standard rectangular waveguide mouth two set gradually thereon, polarization separation structure, square circle transformation structure, mark
Quasi-retangular wave leads mouth one, adjusts the side that metal tube is arranged in screw.
As a further illustration of the above scheme, the interior cylindrical dielectric matching section of the working medium radiation head is inserted into circular waveguide tube
Interior to realize impedance matching, pipe outer cone working medium radiation body then carries out geometry figuration to its side and bottom surface respectively, adjusts phase
With primary pattern, the circular cone bottom surface spreading metal coating of pipe outer cone working medium radiation body is to play the role of subreflector.
Further, medium matching section is made of the different cylindrical section of four section diameter Di and length Li in the pipe,
Wherein at least there is the diameter Di of a pitch circle shell of column consistent with waveguide bore D.Dielectric portion in the present embodiment, in circular waveguide tube
It point being made of altogether four pitch circle cylinders, their diameter and length is respectively as follows: D1 and L1, D2 and L2, D3 and L3, D4 and L4, and second
Section and Section four of diameter D2 and D4 are equal to circular waveguide tube internal diameter D, primarily to the standing wave for adjusting radiation head is used.
Further, the pipe outer cone working medium radiation body, circular conical surface are the curved surface of different-diameter and height.
Further, the working medium radiation head the selection of material be loss with dielectric constant it is lower, be easily worked, price it is low
Honest and clean material, such as polytetrafluoroethylene (PTFE), polyethylene, polystyrene, polyamide/polyimides, cyanate.
Further, the circular waveguide tube internal diameter selection need to guarantee the transmission of TE11 main mould and power capacity requirement.
Further, the circular waveguide tube selection electric conductivity is relatively strong, thermal expansion coefficient is smaller, lower-cost metal material
Material, such as fine copper, alloyed copper, fine aluminium and die casting aluminium.
Further, the size of described two standard rectangular waveguide mouths is that corresponding frequency range can guarantee that TE10 main mould passes respectively
Defeated standard rectangular waveguide dimensions A and B, is to have as defined in GB standard, its position is respectively in the same of the cavity of metal tube
Side either both sides, major function is the effect that signal enters cavity or transmits out from cavity.
Further, the square circle transformation structure is mainly made of the either multistage truncation circle of 1 rank, including right angle square
Shape angular transformation, the square circle conversion of multistage truncation circle, can do round square by this structure and convert.
Further, the polarization separation structure be by several be arranged in metal tube chamber and with standard waveguide mouth one
Parallel metal needle composition, the effect of the metal needle mainly signal of decomposition standard waveguide mouth two and purification standard waveguide mouth one
Signal.
The beneficial effects of the utility model are:
1, two polarization need not move through polarization rotation, and two defeated rectangular waveguide input mouth structures intersect, and deutostoma polarization is direct
Converted through square circle, prosopyle polarization by several Shorted post isolation filters reaches energy separation, using by the conversion of square circle instead of rectangle to
Circular window coupling, reduces the narrow limitation of frequency band caused by the polarization conversion of deutostoma, and middle section passes through simple short circuit
Needle is filtered；The radiant section of front is to carry out radiation matching by multistage step, and entire design has high-performance, ultra wide band
Wide feature.
2, the two positive criss-cross fashions of standard rectangular waveguide mouth separately input, and deutostoma directly passes through round square conversion and is input to chamber
Body, and reach polarization isolation, the rotation more progressive than the Shorted post that conventional using is spaced 8~10 degree of this method by several Shorted posts
It passs on to 90 degree of method either 45 degree of needles and turns polarized method, the later period process of assembling is less, and bandwidth is wider.
Detailed description of the invention
Fig. 1 show the sectional view of the high XPD dual polarized antenna feed of ultra wide band.
Fig. 2 show the sectional view of working medium radiation head.
Fig. 3 show the sectional view of ultra wideband dual polarization separator.
Fig. 4 show the perspective view of ultra wideband dual polarization separator.
Fig. 5 show the perspective view of polarization separation structure.
Fig. 6 show the S parameter figure of the high XPD bipolar feed source 6W of ultra wide band, | S11 |, | S22 |≤- 27.5dB.
Description of symbols:
1: working medium radiation head, 1-1: interior cylindrical dielectric matching section, 1-2: pipe outer cone working medium radiation body, 1-3: conical bottom
Face, 2: circular waveguide tube, 3: ultra wideband dual polarization separator, 3-1: metal tube, 3-2: standard rectangular waveguide mouth one, 3-3: square circle becomes
Structure is changed, 3-4: polarization separation structure, 3-5: standard rectangular waveguide mouth two, 3-6: metal needle, 4: adjusting screw.
Specific embodiment
The utility model in essence is more fully understood for convenience of those skilled in the art, with reference to the accompanying drawing to the utility model
Specific embodiment be described in detail.
As shown in Figure 1-Figure 3, the high XPD dual polarized antenna feed of a kind of ultra wide band, comprising: working medium radiation head 1, circular waveguide
Pipe 2, ultra wideband dual polarization separator 3 adjust screw 4, and the working medium radiation head 1 is mounted on 2 one end of circular waveguide tube, and ultra wide band is double
Polarization separator 3 is mounted on 2 other end of circular waveguide tube, wherein the working medium radiation head 1 includes in axial direction setting gradually
Interior cylindrical dielectric matching section 1-1, pipe outer cone working medium radiation body 1-2, one end of pipe outer cone working medium radiation body is provided with circular cone
Bottom surface 1-3, the ultra wide band polarization separator 3 include metal tube 3-1 and two 3- of standard rectangular waveguide mouth set gradually thereon
5, polarization separation structure 3-4, square circle transformation structure 3-3, one 3-2 of standard rectangular waveguide mouth adjust screw 4 and are arranged in metal tube 3-
1 side.
As shown in fig. 6, the technical program operates mainly in 5.825GHz~11.7GHz, and its reflection coefficient | S11 |≤-
26.5dB, orthogonal mode isolation | S21 |≤- 45dB, standing-wave ratio VSWR≤1.1, short-circuit IPI≤- 44dB.In addition, in entire band
Directional diagram has good amplitude flatness, phase equalization, good cross polarization, lesser secondary lobe and back lobe, and very
High gain efficiency.
When specific works, entire feed scheme is achieved in that identical electric signal respectively from standard rectangular waveguide mouth one
It is incoming with two.The signal entered from standard rectangular waveguide mouth one reaches cavity after the square circle conversion by square circle transformational structure, and
It is purified by metal needle.After the signal entered from standard rectangular waveguide mouth two enters cavity, the effect of metal needle is mainly to signal
Separation barrier effect is carried out, signal can only be propagated forward due to electric field relationship.Two signals are incoming using the nozzle of metal tube
Circular waveguide tube is reflected on parabola antenna into working medium radiation head by the subreflector of metallization.
The essence of the utility model is described in detail in the above specific embodiment, but can not be come with this to this reality
It is limited with novel protection scope.It should be evident that under the enlightenment of the utility model, the art ordinary skill people
Member can also carry out many improvement and modification, it should be noted that these improvement and modification all fall in the right of the utility model
Within the scope of claimed.
Claims (8)
1. a kind of high XPD dual polarized antenna feed of ultra wide band characterized by comprising working medium radiation head, surpasses circular waveguide tube
Wide band dipole separator adjusts screw, and the working medium radiation head is mounted on circular waveguide tube one end, ultra wideband dual polarization separator
It is mounted on the circular waveguide tube other end, wherein the working medium radiation head includes the interior cylindrical dielectric matching in axial direction set gradually
Section, pipe outer cone working medium radiation body, one end of pipe outer cone working medium radiation body are provided with circular cone bottom surface, the ultra wide band polarization point
Include metal tube from device and set gradually thereon standard rectangular waveguide mouth two, polarization separation structure, square circle transformation structure, standard
Rectangular waveguide mouth one adjusts the side that metal tube is arranged in screw.
2. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that the medium
In the interior cylindrical dielectric matching section insertion circular waveguide tube of radiation head, pipe outer cone working medium radiation body respectively to its side and bottom surface into
Row geometry figuration adjusts phase and primary pattern, the circular cone bottom surface spreading metal coating of pipe outer cone working medium radiation body.
3. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that the inner circle
Column medium matching section is made of the different cylindrical section of four section diameter Di and length Li, wherein at least there is the straight of a pitch circle shell of column
Diameter Di is consistent with waveguide bore D.
4. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that outside the pipe
Circular cone working medium radiation body, circular conical surface are the curved surface of different-diameter and height.
5. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that the round wave
Catheter diameter selection need to guarantee the transmission of TE11 main mould and power capacity requirement.
6. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that described two
The size of standard rectangular waveguide mouth is standard rectangular the waveguide dimensions A and B that corresponding frequency range can guarantee the transmission of TE10 main mould respectively,
It is provided by GB standard, position is respectively on same one side of the cavity of metal tube either both sides.
7. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that the square circle
Mapped structure is mainly made of the either multistage truncation circle of 1 rank, the square including orthogonal rectangle angular transformation, multistage truncation circle
Circle conversion.
8. a kind of high XPD dual polarized antenna feed of ultra wide band according to claim 1, which is characterized in that the polarization
Separated structure is arranged in metal tube chamber by several and the metal needle parallel with standard waveguide mouth one forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782848.4U CN209119352U (en) | 2018-10-31 | 2018-10-31 | A kind of high XPD dual polarized antenna feed of ultra wide band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782848.4U CN209119352U (en) | 2018-10-31 | 2018-10-31 | A kind of high XPD dual polarized antenna feed of ultra wide band |
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| CN209119352U true CN209119352U (en) | 2019-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473781A (en) * | 2018-10-31 | 2019-03-15 | 广东盛路通信科技股份有限公司 | A kind of high XPD dual polarized antenna feed of ultra wide band |
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2018
- 2018-10-31 CN CN201821782848.4U patent/CN209119352U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473781A (en) * | 2018-10-31 | 2019-03-15 | 广东盛路通信科技股份有限公司 | A kind of high XPD dual polarized antenna feed of ultra wide band |
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