CN209119299U - A kind of parabolic antenna feed source of double frequency shared - Google Patents
A kind of parabolic antenna feed source of double frequency shared Download PDFInfo
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- CN209119299U CN209119299U CN201821784235.4U CN201821784235U CN209119299U CN 209119299 U CN209119299 U CN 209119299U CN 201821784235 U CN201821784235 U CN 201821784235U CN 209119299 U CN209119299 U CN 209119299U
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- antenna feed
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- circular waveguide
- reflecting surface
- waveguide tube
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Abstract
The utility model discloses a kind of parabolic antenna feed source of double frequency shared, it is characterized in that, it include: circular waveguide tube, dielectric rod, radiating horn, dielectric support structure, secondary reflecting surface, reflecting surface, wherein the circular waveguide tube, dielectric rod, secondary reflecting surface form dielectric rod antenna feed type, the circular waveguide tube, radiating horn, dielectric support structure, secondary reflecting surface form ring-focus antenna feed type, wherein dielectric rod antenna type of radiation is high band, ring-focus antenna type of radiation is low-frequency range, and two kinds of emission types share the same reflecting surface.The design method that the utility model is combined into one by using dielectric rod antenna feed and ring-focus antenna feed, independent corresponding different band operation, shares same reflection surface, the same antenna structure main body can apply multiple frequency ranges simultaneously between the two.
Description
Technical field
The utility model relates to a kind of feedbacks of the parabola antenna of communication antenna equipment technical field more particularly to double frequency shared
Source.
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..In numerous applications, microwave relay transmission is current parabolic
The most frequently used surface antenna is also the application most concentrated.Parabola antenna, which is substantially, is mounted on the high empty positions such as steel tower, high roof.Mesh
The preceding development with communication system, website arrangement is more and more intensive, the installation site resource of antenna be also it is more and more nervous, it is identical
Installation space, can arrange that more antennas can either utilize more frequency spectrum resources, be that research and develop at present one is important
Direction.The wherein same antenna structure main body can be simultaneously a kind of now more commonly used means using multiple frequency ranges.
Summary of the invention
That in view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of structures is simple, at low cost,
The parabolic antenna feed source of performance double frequency shared easy to accomplish.
To achieve the above objectives, the utility model adopts the following technical solution.
A kind of parabolic antenna feed source of double frequency shared characterized by comprising circular waveguide tube, dielectric rod, radiation loudspeaker
, dielectric support structure, secondary reflecting surface, reflecting surface, wherein the circular waveguide tube, dielectric rod, secondary reflecting surface composition are situated between
Matter spike antenna feed type, the circular waveguide tube, radiating horn, dielectric support structure, secondary reflecting surface composition ring-focus antenna feedback
Source Type, the dielectric rod antenna feed type and ring-focus antenna feed type form radiant section, wherein dielectric rod antenna class
Type radiation is high band, and ring-focus antenna type of radiation is low-frequency range, and two kinds of emission types share the same reflecting surface, reflects table
Face is connected with dielectric support structure, and the circular waveguide tube of high band is nested in inside the circular waveguide tube of low-frequency range, and two circular waveguides are concentric.
As a further illustration of the above scheme, the size selection of the circular waveguide tube, it is ensured that it is in working frequency range
The main mould of propagation is TE11 mould.
Further, the dielectric rod is EH11 mould in the main mould that working frequency range is propagated.
Further, the selection of material of the dielectric rod is loss and dielectric constant is lower, is easily worked, is cheap
Material, such as polytetrafluoroethylene (PTFE), polyethylene, polystyrene, polyamide/polyimides, cyanate.
Further, the dielectric rod is inserted partially into circular waveguide tube, and pipe inner part is to adjust feed standing wave, and pipe is outer
Part uses gradually smaller structure to guarantee the wave propagated in dielectric rod for pure traveling wave.It is that high band does energy guiding function.
Further, the radiating horn is that the metal plating for doing part on the surface of dielectric support structure is formed.
Further, the material that the dielectric support structure is selected is loss and dielectric constant is lower, is easily worked, valence
The cheap material of lattice also has the function of adjusting phase and standing wave other than supporting the effect of secondary reflecting surface.
Further, the dielectric support structure includes the interior cylindrical dielectric matching section in axial direction set gradually, pipe
Outer cone working medium radiation body, interior cylindrical dielectric matching section insertion circular waveguide tube are interior to realize impedance matching；Pipe outer cone medium spoke
The inner hollow of beam forms dielectric wall, its inside is cavity, and structure is the knot that smooth table wall either carries out geometry figuration
Phase and primary pattern can be adjusted in structure, structure.
Further, the secondary reflecting surface is laid on the inner wall and/or outer wall of circular waveguide tube.
Further, the surface of the reflecting surface is by the structure of geometry figuration, and mainly control energy is reflected into throwing
On the primary reflection surface of object plane antenna.
The beneficial effects of the utility model are:
1, the design method being combined into one using dielectric rod antenna feed and ring-focus antenna feed, independent corresponding different frequency
Section work, shares same reflection surface between the two, and the same antenna structure main body can apply multiple frequency ranges simultaneously.
2, the span line of two frequency ranges, is transmitted using circular waveguide tube, and the circular waveguide tube of high band is nested in low-frequency range
Circular waveguide tube inside, the two is concentric, by can independently carry out between the transmission of this two frequency ranges of structure.
Detailed description of the invention
Fig. 1 show the outside drawing of the parabolic antenna feed source of double frequency shared.
Fig. 2 show the sectional view of the parabolic antenna feed source of double frequency shared.
Fig. 3 show the structural schematic diagram of dielectric rod antenna feed type.
Fig. 4 show the structural schematic diagram of ring-focus antenna feed type.
Fig. 5 show the S parameter figure of two frequency ranges of 15GHz&80GHz Double frequency feed source.
Fig. 6 show the feed antenna pattern of two frequency ranges of 15GHz&80GHz Double frequency feed source.
Description of symbols:
1: circular waveguide tube, 2: dielectric rod, 3: radiating horn, 4: dielectric support structure, 4-1: interior cylindrical dielectric matching section, 4-
2: pipe outer cone working medium radiation body, 5: secondary reflecting surface, 6: reflecting surface.
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 Figure 1-Figure 2, a kind of parabolic antenna feed source of double frequency shared, comprising: circular waveguide tube 1, dielectric rod 2, spoke
Loudspeaker 3, dielectric support structure 4, secondary reflecting surface 5, reflecting surface 6 are penetrated, wherein the circular waveguide tube 1, dielectric rod 2, secondary reflection
Surface 5 forms dielectric rod antenna feed type, the circular waveguide tube 1, radiating horn 3, dielectric support structure 4, secondary reflecting surface 5
Ring-focus antenna feed type is formed, the dielectric rod antenna feed type and ring-focus antenna feed type form radiant section,
Middle dielectric rod antenna type of radiation is high band, and ring-focus antenna type of radiation is low-frequency range, and two kinds of emission types share same
Reflecting surface 6, reflecting surface 6 are connected with dielectric support structure 4, and the circular waveguide tube 1 of high band is nested in the circular waveguide of low-frequency range
1 the inside of pipe, two circular waveguides are concentric.
As shown in figure 3, the dielectric rod antenna feed type is made of circular waveguide tube 1, dielectric rod 2, secondary reflecting surface 5,
Wherein dielectric rod 2 is that high band does energy guiding function, it is inserted partially into circular waveguide tube 1, and pipe inner part is to adjust feedback
Source standing wave, pipe outer portion use gradually smaller structure to guarantee the wave propagated in dielectric rod 2 for pure traveling wave.
As shown in figure 4, the ring-focus antenna feed type is by circular waveguide tube 1, radiating horn 3, dielectric support structure 4, pair
Reflecting surface 5 forms, wherein the dielectric support structure 4 includes the interior cylindrical dielectric matching section 4- in axial direction set gradually
1, pipe outer cone working medium radiation body 4-2, interior cylindrical dielectric matching section 4-1 insertion circular waveguide tube 1 are interior to realize impedance matching；Pipe is outer
The inner hollow of circular cone working medium radiation body 4-2 forms dielectric wall, its inside is cavity, and structure is that smooth table wall either carries out
Phase and primary pattern can be adjusted in the structure of geometry figuration, structure；The radiating horn 3 is in dielectric support structure
The metal plating that part is done on 4 surface is formed.
It is the electrical property number that this programme is applied to 14.4GHz~15.35GHz and 71GHz~86GHz as shown in Fig. 5-Fig. 6
According to the reflection coefficient of two frequency ranges | S11 | -14dB or less can be met.In addition, entirely there is good width with interior directional diagram
Spend flatness, lesser secondary lobe and back lobe and very high gain efficiency.
When specific works, the electric signal for being achieved in that low-frequency range of entire feed scheme is incoming from circular waveguide tube, circle wave
The structure of similar axis is constituted between conduit and circular waveguide tube, energy transmits between two circular waveguide tube walls.Signal reaches radiation
It is radiated, and is radiated on reflecting surface after loudspeaker, is reflected on the primary reflection surface of parabola antenna through reflecting surface；High frequency
The electric signal of section is incoming from circular waveguide tube, after reaching dielectric rod, guides through dielectric rod, is radiated by the other end, energy is radiated instead
It after reflective surface, is reflected on primary reflection surface, realizes the same antenna structure main body, multiple frequency ranges can be applied simultaneously.
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 (10)
1. a kind of parabolic antenna feed source of double frequency shared characterized by comprising circular waveguide tube, dielectric rod, radiating horn,
Dielectric support structure, secondary reflecting surface, reflecting surface, the circular waveguide tube, dielectric rod, secondary reflecting surface form dielectric rod antenna
Feed type, the circular waveguide tube, radiating horn, dielectric support structure, secondary reflecting surface form ring-focus antenna feed type, institute
Dielectric rod antenna feed type and ring-focus antenna feed type composition radiant section are stated, dielectric rod antenna type of radiation is high frequency
Section, ring-focus antenna type of radiation is low-frequency range, and two kinds of emission types share the same reflecting surface, reflecting surface and dielectric support
Structure is connected, and the circular waveguide tube of high band is nested in inside the circular waveguide tube of low-frequency range, and two circular waveguides are concentric.
2. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the circular waveguide tube
The main mould that the size selected is propagated in working frequency range is TE11 mould.
3. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the dielectric rod exists
The main mould that working frequency range is propagated is EH11 mould.
4. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the dielectric rod
The selection of material is loss and the lower material of dielectric constant, such as polytetrafluoroethylene (PTFE), polyethylene, polystyrene, polyamide/polyamides
Imines, cyanate.
5. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the medium bar portion
Divide and is inserted into circular waveguide tube.
6. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the radiating horn
It is that the metal plating for doing part on the surface of dielectric support structure is formed.
7. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the dielectric support
The material that structure is selected is loss and the lower material of dielectric constant, such as polytetrafluoroethylene (PTFE), polyethylene, polystyrene, polyamides
Amine/polyimides, cyanate.
8. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the dielectric support
Structure includes the interior cylindrical dielectric matching section in axial direction set gradually, pipe outer cone working medium radiation body, interior cylindrical dielectric
With in section insertion circular waveguide tube；The inner hollow of pipe outer cone working medium radiation body forms dielectric wall, its inside is cavity, structure
It is the structure that smooth table wall either carries out geometry figuration.
9. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the reflecting surface
Surface be by the structure of geometry figuration.
10. a kind of parabolic antenna feed source of double frequency shared according to claim 1, which is characterized in that the secondary reflection
Surface is laid in the inner wall and/or outer wall of circular waveguide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784235.4U CN209119299U (en) | 2018-10-31 | 2018-10-31 | A kind of parabolic antenna feed source of double frequency shared |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784235.4U CN209119299U (en) | 2018-10-31 | 2018-10-31 | A kind of parabolic antenna feed source of double frequency shared |
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| CN209119299U true CN209119299U (en) | 2019-07-16 |
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| CN201821784235.4U Active CN209119299U (en) | 2018-10-31 | 2018-10-31 | A kind of parabolic antenna feed source of double frequency shared |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411870A (en) * | 2018-10-31 | 2019-03-01 | 广东盛路通信科技股份有限公司 | A kind of parabolic antenna feed source of double frequency shared |
| CN112490674A (en) * | 2020-11-06 | 2021-03-12 | 电子科技大学 | Low-focal-diameter-ratio reflector antenna with sub-reflector based on double-frequency feed source feed |
-
2018
- 2018-10-31 CN CN201821784235.4U patent/CN209119299U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411870A (en) * | 2018-10-31 | 2019-03-01 | 广东盛路通信科技股份有限公司 | A kind of parabolic antenna feed source of double frequency shared |
| CN109411870B (en) * | 2018-10-31 | 2023-12-15 | 广东盛路通信科技股份有限公司 | Dual-frequency shared parabolic antenna feed source |
| CN112490674A (en) * | 2020-11-06 | 2021-03-12 | 电子科技大学 | Low-focal-diameter-ratio reflector antenna with sub-reflector based on double-frequency feed source feed |
| CN112490674B (en) * | 2020-11-06 | 2021-12-03 | 电子科技大学 | Low-focal-diameter-ratio reflector antenna based on double-frequency feed source feed |
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