CN205790398U - Double frequency-band dual reflector antenna - Google Patents
Double frequency-band dual reflector antenna Download PDFInfo
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- CN205790398U CN205790398U CN201620427049.XU CN201620427049U CN205790398U CN 205790398 U CN205790398 U CN 205790398U CN 201620427049 U CN201620427049 U CN 201620427049U CN 205790398 U CN205790398 U CN 205790398U
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- double frequency
- band
- subreflector
- reflector antenna
- loudspeaker
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Abstract
This utility model provides a kind of double frequency-band dual reflector antenna, and it includes primary reflection surface and subreflector, and it also includes the double frequency-band loudspeaker being arranged between primary reflection surface and subreflector, and these double frequency-band loudspeaker are waveguide feedback type loudspeaker.This utility model double frequency-band dual reflector antenna uses double frequency-band loudspeaker, meets arbitrary two band configurations, and while meeting double frequency transmission, more compact structure, processing are simple, superior performance.
Description
[technical field]
This utility model relates to microwave relay communication field, especially relates to a kind of double frequency-band double-reflecting face sky
Line.
[background technology]
Current 4G networking is like a raging fire, along with the extensive application of 4G business, particularly following 5G industry
Business, to Large Copacity and the requirement of IPization, causes the surge to return network capacity requirement, has wide channels band
Wide brand-new frequency range E-band (71～76GHz, 81～86GHz) becomes the most popular microwave transmission frequency
Rate.
Although it is objective that high band E-band transmission technology capacity high still transmission range and stability receive
Condition (as space loss is big, rain declines seriously, the narrow wind resistance difference etc. caused of half-power angle) limits.
Double frequency microwave antenna transmission system: transmit high-frequency signal (such as E-band) in same hop link and protect
Card transmission bandwidth can transmit again low-frequency range (such as 15G, 18G, 23G) signal, the Gao Rong of high band simultaneously
The distance characteristic of amount and low-frequency range combines, and also enhances QoS business while providing super large bandwidth
Protection mechanism, is the splendid solution facing the future and effectively promoting Microwave Net capacity.
Prior art double frequency microwave antenna transmission system typically uses feedforward to add rear feed scheme, as it is shown in figure 1,
Prior art double frequency microwave antenna transmission system mainly includes four parts: primary reflection surface 110, pair reflect
Face 120, front-fed horn 130 and rear feed loudspeaker 140, subreflector 120 is the frequency choosing of double-curved shapes
Select face, it is desirable to the electromagnetic wave total reflection to rear feed loudspeaker 140 radiation, the electromagnetism to front-fed horn 130 radiation
Ripple total transmissivity, cause can not two different frequency bands of arbitrary disposition, relative bandwidth is also restricted, knot
Including the multiple metal unit of upper and lower layer above structure, intermediate layer is honeycomb texture or loss-free dielectric material,
Extremely complex, requirement on machining accuracy is high；Front-fed horn 130 is positioned at primary reflection surface 110, subreflector 120
Common focus position, by waveguide bending to reflecting surface base drive, structure is complicated, and insertion loss is relatively
Greatly, rear feed loudspeaker 140 are positioned at another focal position of subreflector.
Therefore it provides the double frequency microwave antenna that a kind of simple in construction, processing request are simple, insertion loss is few
Actually necessary.
[summary of the invention]
The purpose of this utility model is to provide a kind of simple in construction, processing request is simple, insertion loss is few
Double frequency-band dual reflector antenna.
For realizing this utility model purpose, it is provided that techniques below scheme:
This utility model provides a kind of double frequency-band dual reflector antenna, and it includes primary reflection surface and secondary reflection
Face, it also includes the double frequency-band loudspeaker being arranged between primary reflection surface and subreflector, these double frequency-band loudspeaker
For waveguide feedback type loudspeaker.This utility model double frequency-band dual reflector antenna uses double frequency-band loudspeaker, meets
Arbitrary two band configurations, while meeting double frequency transmission, more compact structure, processing are simple, performance
Superior.
Preferably, this primary reflection surface, subreflector and double frequency-band loudspeaker are in same structure substantially symmetrical about its central axis.
Double frequency-band loudspeaker have almost identical irradiation wave beam in two frequency bands, to subreflector edge at two
Having almost identical irradiation level in frequency band, insertion loss is few, superior performance.
Preferably, this primary reflection surface be ring focal parabola curved surface, subreflector be part elliptical curve, should
Double frequency-band loudspeaker are double frequency-band corrugated horn.
Preferably, the bus of this subreflector is an oval part, and this ellipse has lower focus and upper focus,
Oval lower focus is in same position with double frequency-band loudspeaker phase center, is positioned in central symmetry axes, on
The focal shift central shaft corresponding low-frequency range 1 of distance～3 wavelength distance, secondary reverse side radius equals to or more than
The distance of upper focus off center axle.This structure can effectively reduce double frequency-band loudspeaker (particularly low-frequency band)
Electromagnetic wave diffraction, improve the overall minor level of antenna and electromagenetic wave radiation efficiency.
Preferably, the height at this subreflector edge is higher than subreflector center position, this subreflector
Center position arranges sharp-pointed pyramid shape, this sharp-pointed pyramid can effectively reduce double frequency-band loudspeaker in
The energy density of heart position, not only reflexes to primary reflection surface edge energy of electromagnetic field and drastically declines, have very
Good feed edge illumination, and the energy that subreflector reflexes to double frequency-band corrugated horn actinal surface is the least,
Thus it is substantially improved the stationary wave characteristic of feed.
Preferably, the bus of this primary reflection surface is ring focal parabola, and the ring focal radius of this ring focal parabola is
The distance of focus off center axle on subreflector, can effectively avoid effective to primary reflection surface of subreflector
Aperture blockage, it is achieved preferably complete machine stationary wave characteristic and radiation efficiency.
Preferably, focal length height and the diameter ratio of primary reflection surface is 0.16～0.37.
Preferably, double frequency-band loudspeaker can be in close proximity with subreflector, and distance is arranged on 2～5 low-frequency ranges
Wavelength, it is achieved less longitudinal size, compact antenna structure.Preferably, the focus of this primary reflection surface
Overlapping with the upper focus of subreflector, the phase center of this double frequency-band corrugated horn is with the part of the body cavity below the umbilicus, housing the bladder, kidneys and bowels of subreflector
Point overlaps.
Contrast prior art, this utility model has the advantage that
This utility model double frequency-band dual reflector antenna uses double frequency-band loudspeaker, meets arbitrary two frequency bands
Configuration, while meeting double frequency transmission, more compact structure, processing are simple, superior performance.This structure energy
Effectively reduce the electromagnetic wave diffraction of double frequency-band loudspeaker (particularly low-frequency band), improve the secondary lobe that antenna is overall
Level and electromagenetic wave radiation efficiency.On this subreflector, the structure of sharp-pointed pyramid, can effectively reduce double frequency-band
Loudspeaker in the energy density of center, not only reflex to primary reflection surface edge energy of electromagnetic field drastically under
Fall, has good feed edge illumination, and subreflector reflexes to double frequency-band corrugated horn actinal surface
Energy is the least, thus is substantially improved the stationary wave characteristic of feed.The ring focal radius of this ring focal parabola is secondary anti-
Penetrate the distance of focus off center axle on face, can effectively avoid the subreflector effective aperture to primary reflection surface
Block, it is achieved preferably complete machine stationary wave characteristic and radiation efficiency.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of prior art dual reflector antenna；
Fig. 2 is the oval minor face ring-focus antenna of one of this utility model double frequency-band dual reflector antenna embodiment
Axonometric chart；
Fig. 3 is the oval minor face ring-focus antenna of one of this utility model double frequency-band dual reflector antenna embodiment
Sectional view.
[detailed description of the invention]
Refer to Fig. 2 and Fig. 3, show this utility model double frequency-band dual reflector antenna and apply oval secondary
The embodiment schematic diagram of face ring-focus antenna, including primary reflection surface 210, subreflector 220, is arranged on master instead
Penetrate the double frequency-band corrugated horn 230 between face and subreflector.This utility model double frequency-band double-reflecting face sky
Line uses double frequency-band loudspeaker, meets arbitrary two band configurations, while meeting double frequency transmission, and structure
More compact, processing is simple, superior performance.
As shown in Figures 2 and 3, this primary reflection surface 210, subreflector 220, double frequency-band corrugated horn 230
Be in same structure substantially symmetrical about its central axis, this primary reflection surface be ring focal parabola curved surface, subreflector be part
Elliptic curve, this double frequency-band corrugated horn 230 is waveguide feedback type loudspeaker, is positioned at Jiao of subreflector 220
Point position, has almost identical irradiation wave beam, to subreflector edge at two frequencies in two frequency bands
Almost identical irradiation level is had in band.
The bus of this subreflector 220 is an oval part, and under this ellipse, focus is O, upper focus be O ',
O ", oval lower focus O is in same position with double frequency-band corrugated horn 230 phase center, is positioned at center
On axis of symmetry AA ', " off center wheelbase is from L, correspondence low-frequency range 1～3 wavelength for upper focus O ', O
Distance, secondary reverse side radius Ds/2 is equal to or more than distance L of upper focus off center axle, and its effect is
Can effectively reduce the electromagnetic wave diffraction of double frequency-band loudspeaker (particularly low-frequency band), improve the pair that antenna is overall
Lobe level and electromagenetic wave radiation efficiency, the height M at this subreflector edge is higher than position, subreflector center
Put T, this subreflector center position T, sharp-pointed pyramid shape is set, sharp-pointed pyramid can effectively drop
The low double frequency-band loudspeaker energy density in center, not only reflexes to primary reflection surface edge energy of electromagnetic field
Drastically decline, there is good feed edge illumination, and subreflector reflexes to double frequency-band corrugated horn
The energy of actinal surface is the least, thus is substantially improved the stationary wave characteristic of feed.
The bus of this primary reflection surface 210 is ring focal parabola, and the ring focal radius of this ring focal parabola is secondary anti-
Penetrate distance L of focus off center axle on face, can effectively avoid the subreflector effective mouth to primary reflection surface
Footpath is blocked, it is achieved preferably complete machine stationary wave characteristic and radiation efficiency, and the focal length height F of primary reflection surface is with straight
The ratio D in footpath is 0.16～0.37.
The focus of this primary reflection surface 210 overlaps with the upper focus of subreflector 220, this double frequency-band corrugated horn
The phase center of 230 overlaps with lower focus O of subreflector 220.
These double frequency-band loudspeaker 230 can be in close proximity with subreflector 220, and distance is arranged on 2～5 low-frequency ranges
Wavelength, it is achieved less longitudinal size, compact antenna structure.Fed by double frequency-band corrugated horn 230
And produce frequency f1 of arbitrary disposition, f2 band electromagnetic ripple, the phase center of double frequency-band corrugated horn is set
Overlap with a focus of elliptic curve, via double frequency-band corrugated horn phase center and elliptic curve focus
It is radiated to subreflector 220, through subreflector 220 reflection, according to the optics rule of elliptic curve,
Just be better than another focus of elliptic curve in the echo direction of propagation, and propagate to main anti-along straight line path
Penetrate face 210, occur to launch and in primary reflection surface bore, there is identical transmission wavelength and phase at primary reflection surface
Position.
The foregoing is only preferred embodiment of the present utility model, protection domain of the present utility model not office
Be limited to this, any based on the equivalent transformation in technical solutions of the utility model belong to this utility model protection
Within the scope of.
Claims (10)
1. a double frequency-band dual reflector antenna, it includes primary reflection surface and subreflector, and its feature exists
In, it also includes the double frequency-band loudspeaker being arranged between primary reflection surface and subreflector, these double frequency-band loudspeaker
For waveguide feedback type loudspeaker.
2. double frequency-band dual reflector antenna as claimed in claim 1, it is characterised in that this primary reflection surface,
Subreflector and double frequency-band loudspeaker are in same structure substantially symmetrical about its central axis.
3. double frequency-band dual reflector antenna as claimed in claim 2, it is characterised in that this primary reflection surface
Being part elliptical curved surface for ring focal parabola curved surface, subreflector, these double frequency-band loudspeaker are double frequency-band ripple
Loudspeaker.
4. double frequency-band dual reflector antenna as claimed in claim 3, it is characterised in that this subreflector
Bus be an oval part, this ellipse has upper focus and lower focus, wherein descends focus with this double frequency-band
The phase center of loudspeaker is in same position, and is positioned in central symmetry axes.
5. double frequency-band dual reflector antenna as claimed in claim 4, it is characterised in that this subreflector
Upper focus off center axle correspondence low-frequency range 1～3 wavelength distance, the radius of subreflector equal to or
Distance more than upper focus off center axle.
6. double frequency-band dual reflector antenna as claimed in claim 5, it is characterised in that this subreflector
The height at edge is higher than subreflector center position, and this subreflector center position arranges pyramid
Shape.
7. the double frequency-band dual reflector antenna as described in any one of claim 1～6, it is characterised in that should
The bus of primary reflection surface is ring focal parabola, and the ring focal radius of this ring focal parabola is focus on subreflector
The distance of off center axle.
8. double frequency-band dual reflector antenna as claimed in claim 7, it is characterised in that primary reflection surface
Focal length height and diameter ratio are 0.16～0.37.
9. double frequency-band dual reflector antenna as claimed in claim 8, it is characterised in that this subreflector
It is 2～5 low-frequency range wavelength with the distance of double frequency-band corrugated horn.
10. double frequency-band dual reflector antenna as claimed in claim 8, it is characterised in that this principal reflection
The focus in face overlaps with the upper focus of subreflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620427049.XU CN205790398U (en) | 2016-05-11 | 2016-05-11 | Double frequency-band dual reflector antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620427049.XU CN205790398U (en) | 2016-05-11 | 2016-05-11 | Double frequency-band dual reflector antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205790398U true CN205790398U (en) | 2016-12-07 |
Family
ID=57409173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620427049.XU Active CN205790398U (en) | 2016-05-11 | 2016-05-11 | Double frequency-band dual reflector antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205790398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899654A (en) * | 2018-06-05 | 2018-11-27 | 大连理工大学 | High rail spacecraft GNSS receiver antenna based on the wave beam that is close to |
| CN109616776A (en) * | 2018-12-27 | 2019-04-12 | 中国联合网络通信集团有限公司 | Omnidirectional antenna and equipment |
| CN111525279A (en) * | 2020-05-28 | 2020-08-11 | 广东盛路通信科技股份有限公司 | Double-frequency parabolic antenna combining feed-forward type and feed-backward type |
-
2016
- 2016-05-11 CN CN201620427049.XU patent/CN205790398U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899654A (en) * | 2018-06-05 | 2018-11-27 | 大连理工大学 | High rail spacecraft GNSS receiver antenna based on the wave beam that is close to |
| CN109616776A (en) * | 2018-12-27 | 2019-04-12 | 中国联合网络通信集团有限公司 | Omnidirectional antenna and equipment |
| CN111525279A (en) * | 2020-05-28 | 2020-08-11 | 广东盛路通信科技股份有限公司 | Double-frequency parabolic antenna combining feed-forward type and feed-backward type |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |