CN207069070U - A kind of polarized rotation radiating guide for base station - Google Patents
A kind of polarized rotation radiating guide for base station Download PDFInfo
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- CN207069070U CN207069070U CN201720743709.XU CN201720743709U CN207069070U CN 207069070 U CN207069070 U CN 207069070U CN 201720743709 U CN201720743709 U CN 201720743709U CN 207069070 U CN207069070 U CN 207069070U
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- mrow
- parallel stripes
- radiating guide
- base station
- rectangular waveguide
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Abstract
The utility model provides a kind of polarized rotation radiating guide for base station,It is related to field of antenna,The described polarized rotation radiating guide for base station includes radiating guide unit and parallel strip face,Radiating guide unit is rectangular waveguide,Rectangular waveguide is fed by N Connector,The pin of N Connector is connected into a metal cylinder,Metal parallel stripes are printed on medium substrate and form parallel stripes surface,Metal parallel stripes rotate 45 degree relative to the long axis direction of rectangular waveguide,The utility model is by using parallel stripes surface,Polarised direction have rotated 45 ° and perpendicular to the direction of band,Due to the strong near-field coupling between waveguide and parallel strip face,Electric current is mainly distributed on bar and taken,And direction is along strip direction,So as to which parallel stripes surface generates 45 ° of line polarization waves,Can be horizontal in the same direction or vertically put together in the same direction in two parallel stripes surfaces with cross polarization,Form ± 45 ° of dual polarized antenna.
Description
Technical field
The present invention relates to field of antenna, especially a kind of radiating guide.
Background technology
Nowadays, ± 45 ° of dual polarized antenna has been widely used for cellular basestation, because they can reduce modern movement
Multipath transmisstion effect in communication system simultaneously strengthens signal receiving quality, therefore, people design have high performance ± 45 ° it is bipolar
Change and a variety of trials and effort have been carried out on antenna direction.
In general, the main Types of antenna for base station include dipole antenna, slot antenna and microstrip antenna, wherein dipole antenna
Audient is very wide in base station applications for line, wider bandwidth can be obtained by using balun or other matching techniques, in this band
Stable directional diagram and gain can also be realized in width, in addition, two doublet units can simply rotate and intersect placement,
So as to form ± 45 ° of dual polarization.Slot antenna and paster antenna are typically used as the single-polarized antenna of base station applies, meanwhile,
Dual-polarized design is realized as unit in the presence of using gap or paster antenna, the major defect of this design is its relative narrower
Bandwidth.In order to expand frequency band, it is necessary to special feed structure improves impedance matching, structure is set to increase while becoming complexity
Cost.In addition, the antenna for base station for above-mentioned several types, it is also necessary to which desired spoke is realized on the ground more much bigger than antenna
Performance is penetrated, so as to cause relatively large volume, therefore wide band antenna for base station a kind of simple in construction and inexpensive is designed and is
One urgent problem.
The content of the invention
For overcome the deficiencies in the prior art, present invention design one kind is not required on the premise of antenna performance index is met
Balun or other matching techniques are wanted, the antenna for base station with advantage simple in construction and inexpensive.
The technical solution adopted for the present invention to solve the technical problems is：
Polarized rotation radiating guide of the present invention for base station includes radiating guide unit and parallel strip face
(surface of parallel strips, SPS)；
Radiating guide unit is rectangular waveguide, and the size of rectangular waveguide bore is calculated by equation below：
In formula (1), f is working frequency, and a, b are respectively the long side and broadside of rectangular waveguide, and m, n are mode of operation number, and μ is
Magnetic conductivity, ε are dielectric constant；
The main mould of radiating guide unit is TE10 moulds, and main polarization direction is the short-axis direction of rectangular waveguide, and square wave turns on
N Connector feed is crossed, the pin of N Connector is connected to the circle of a metal cylinder, metal cylinder and N Connector
The heart overlaps, and the length of metal cylinder is 2/15 operation wavelength, and the reverse side of rectangular waveguide opening surface is bottom surface, distributing point away from
The operation wavelength of bottom surface 1/3 of rectangular waveguide；
Metal parallel stripes are printed on medium substrate and form parallel stripes surface, the medium substrate on parallel stripes surface
Material is FR4, and thickness 0.8mm, relative dielectric constant 4.4, parallel stripes surface has and waveguide openings face identical face
Product, i.e., parallel stripes surface is that long side is the rectangle that a broadsides are b, and parallel stripes surface is placed on apart from rectangular waveguide opening
0.01 times of operating wave strong point in face, metal parallel stripes rotate 45 degree relative to the long axis direction of rectangular waveguide, i.e., grown with waveguide
Direction of principal axis angle is 45 °, and the spacing of each metal parallel stripes is 1/100 times of operation wavelength, the width of metal parallel stripes
For 1/30 operation wavelength.
The waveguide material of the polarized rotation radiating guide for base station is aluminium.
The metal cylinder of the polarized rotation radiating guide for base station is copper.
Metal parallel stripes material on the parallel stripes surface for the polarized rotation radiating guide of base station is copper.
The beneficial effects of the invention are as follows due to have rotated 45 ° using parallel stripes surface, polarised direction and perpendicular to band
Direction, due to the strong near-field coupling between waveguide and parallel strip face, electric current is mainly distributed on bar and taken, and direction edge
Strip direction, so as to which parallel stripes surface generates 45 ° of line polarization waves, two parallel stripes surfaces with cross polarization can
With the horizontal dual polarized antenna put together in the same direction in the same direction or vertically, form ± 45 °.
Brief description of the drawings
Fig. 1 is the top view of radiating guide of the present invention.
Fig. 2 is the cross section view of radiating guide of the present invention.
Fig. 3 is the top view of parallel stripes surface (SPS) in radiating guide of the present invention.
Wherein, a- waveguides are long-armed, b- waveguide galianconism, the radius of Pr- metal cylinders, the length of P1- metal cylinders,
The length of P2-N type connectors, the center of circle to the distance of guide floor, hs- parallel stripes surface to waveguide of PL- metal cylinders
The distance of opening surface, the width of sw- metal parallel stripes, the distance between gw- metal parallel stripes, the width of wt- wave guide walls,
Wl- waveguide surfaces are to the distance of guide floor, 1-N type connectors, 2- parallel stripes surface.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Polarized rotation radiating guide of the present invention for base station includes radiating guide unit and parallel strip face
(surface of parallel strips, SPS).
Radiating guide Unit selection rectangular waveguide, the size of rectangular waveguide bore is calculated by equation below：
In formula (1), f is working frequency, and a, b are respectively the long side and broadside of rectangular waveguide, and m, n are mode of operation number, and μ is
Magnetic conductivity, ε are dielectric constant；
The main mould of radiating guide unit is TE10 moulds, and main polarization direction is the short-axis direction of rectangular waveguide, and square wave turns on
N Connector feed is crossed, the pin of N Connector is connected to the circle of a metal cylinder, metal cylinder and N Connector
The heart overlaps, and the length of metal cylinder is 2/15 operation wavelength, and the reverse side of rectangular waveguide opening surface is bottom surface, distributing point away from
The operating wave strong point of bottom surface 1/3 of rectangular waveguide；
Metal parallel stripes are printed on medium substrate and form parallel stripes surface, the medium substrate on parallel stripes surface
Material is FR4, and thickness 0.8mm, relative dielectric constant 4.4, parallel stripes surface has and waveguide openings face identical face
Product, i.e., parallel stripes surface is that long side is the rectangle that a broadsides are b, and parallel stripes surface is placed on apart from rectangular waveguide opening
0.01 times of operating wave strong point in face, metal parallel stripes rotate 45 degree relative to the long axis direction of rectangular waveguide, i.e., grown with waveguide
Direction of principal axis angle is 45 °, and the spacing of each metal parallel stripes is 1/100 times of operation wavelength, the width of metal parallel stripes
For 1/30 operation wavelength.
The waveguide material of the polarized rotation radiating guide for base station is aluminium.
The metal cylinder material of the polarized rotation radiating guide for base station is copper.
Metal parallel stripes material on the parallel stripes surface for the polarized rotation radiating guide of base station is copper.
The radiating guide unit of the present invention uses 300mm × 165m bore, and waveguide selection uses a length of 300mm, a width of
165mm, a height of 200mm rectangular waveguide, fed on the long-armed face of waveguide, distributing point is away from rectangular waveguide bottom surface 120mm, parallel strip
Belt surface is placed at the 4mm of rectangular waveguide opening surface.
The top view for the antenna for base station that the present invention designs is as shown in figure 1, the top view such as Fig. 3 of parallel stripes surface (SPS)
Shown, the cross section view of radiating guide is as shown in Fig. 2 wherein, a is that waveguide is long-armed, and b is waveguide galianconism, and Pr is metal cylinder
Radius, P1 be metal cylinder length, P2 be N Connector length, PL be metal cylinder the center of circle to waveguide bottom
The distance in face, hs are distance of the parallel stripes surface to waveguide openings face, and sw is the width of metal parallel stripes, and gw puts down for metal
The distance of row bar interband, wt are the width of wave guide wall, and wl is distance of the waveguide surface to guide floor.
Specific structural parameters size is as shown in table 1：
Table 1
| Variable | Numerical value (mm) |
| a | 300 |
| b | 165 |
| Pr | 21 |
| P1 | 50 |
| P2 | 20 |
| PL | 120 |
| hs | 4 |
| sw | 12 |
| gw | 4 |
| wt | 2 |
| wl | 200 |
Pass through the design of ± 45 ° of dual polarization radiating guides of parallel stripes surface (SPS), the final work of the antenna of design
Frequency band is 698~960MHz, relative bandwidth 31.6%.In bandwidth, voltage standing wave ratio (Voltage Standing Wave
Ratio, VSWR) it is less than 1.5, half-power beam width (Half-power beamwidth, HPBW) is 65 ° ± 5 °, and wave beam increases
Benefit is 6.5 ± 0.7dBi.Cross polarization isolation is more than 12dB at beam center, and the resolution ratio in HPBW is more than 10dB.Knot
Fruit shows that the antenna proposed can meet the design requirement of ± 45 ° of dual-polarized antenna for base station.
Claims (4)
1. a kind of polarized rotation radiating guide for base station, including radiating guide unit and parallel strip face, its feature exist
In：
Radiating guide unit is rectangular waveguide, and the size of rectangular waveguide bore is calculated by equation below：
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In formula (1), f is working frequency, and a, b are respectively the long side and broadside of rectangular waveguide, and m, n are mode of operation number, and μ is magnetic conductance
Rate, ε are dielectric constant；
The main mould of radiating guide unit is TE10 moulds, and main polarization direction is the short-axis direction of rectangular waveguide, and rectangular waveguide passes through N-type
Connector is fed, and the pin of N Connector is connected to the center of circle weight of a metal cylinder, metal cylinder and N Connector
Close, and the length of metal cylinder is 2/15 operation wavelength, the reverse side of rectangular waveguide opening surface is bottom surface, and distributing point is away from rectangle
The operation wavelength of bottom surface 1/3 of waveguide；
Metal parallel stripes are printed on medium substrate and form parallel stripes surface, the medium substrate material on parallel stripes surface
For FR4, thickness 0.8mm, relative dielectric constant 4.4, parallel stripes surface have with waveguide openings face identical area, i.e.,
Parallel stripes surface is that long side is the rectangle that a broadsides are b, and parallel stripes surface is placed on apart from rectangular waveguide opening surface
0.01 times of operating wave strong point, metal parallel stripes relative to rectangular waveguide long axis direction rotate 45 degree, i.e., with waveguide major axis side
It it is 45 ° to angle, the spacing of each metal parallel stripes is 1/100 times of operation wavelength, and the width of metal parallel stripes is 1/
30 operation wavelength.
2. the polarized rotation radiating guide according to claim 1 for base station, it is characterised in that：
The waveguide material of the polarized rotation radiating guide for base station is aluminium.
3. the polarized rotation radiating guide according to claim 1 for base station, it is characterised in that：
The metal cylinder of the polarized rotation radiating guide for base station is copper.
4. the polarized rotation radiating guide according to claim 1 for base station, it is characterised in that：
Metal parallel stripes material on the parallel stripes surface for the polarized rotation radiating guide of base station is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720743709.XU CN207069070U (en) | 2017-06-23 | 2017-06-23 | A kind of polarized rotation radiating guide for base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720743709.XU CN207069070U (en) | 2017-06-23 | 2017-06-23 | A kind of polarized rotation radiating guide for base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207069070U true CN207069070U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720743709.XU Expired - Fee Related CN207069070U (en) | 2017-06-23 | 2017-06-23 | A kind of polarized rotation radiating guide for base station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817013A (en) * | 2020-07-28 | 2020-10-23 | 西北工业大学 | Chiral metamaterial structure with asymmetric transmission characteristic and design method |
-
2017
- 2017-06-23 CN CN201720743709.XU patent/CN207069070U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817013A (en) * | 2020-07-28 | 2020-10-23 | 西北工业大学 | Chiral metamaterial structure with asymmetric transmission characteristic and design method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20190623 |