CN105122543B - System for being fixed to flat plane antenna cover on the concave reflector of antenna - Google Patents
System for being fixed to flat plane antenna cover on the concave reflector of antenna Download PDFInfo
- Publication number
- CN105122543B CN105122543B CN201480010762.8A CN201480010762A CN105122543B CN 105122543 B CN105122543 B CN 105122543B CN 201480010762 A CN201480010762 A CN 201480010762A CN 105122543 B CN105122543 B CN 105122543B
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- Prior art keywords
- antenna
- flange portion
- reflector
- lower flange
- equipment according
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Equipment for being fixed to flat plane antenna cover on the antenna reflector of concave surface, antenna house has outer surface and inner surface, and reflector has outer surface and inner surface, the inner surface of antenna house and the inner surface of reflector are facing with each other, the equipment includes upper flange portion and lower flange portion, upper flange portion is arranged to against the outer surface of antenna house and covers the peripheral part of reflector and antenna house, lower flange portion is arranged to the outer surface against reflector, it has the shape of the profile for the outer surface for being suitable for reflector, and including at least one electromagnetism trap.Preferably, electromagnetism trap has the shape of the groove of conductive surface, and groove has the width for 1/10th magnitude for being antenna operating wavelength and is the depth of the magnitude of a quarter of antenna operating wavelength.According to a modification, electromagnetism trap further comprises the edge along groove.
Description
Technical field
The present invention relates to wireless aerial field, more particularly, to by concave reflection of the flat plane antenna cover fixed to antenna
System on device.
Background technology
Wireless aerial is normally used for mobile communications network.This antenna includes generally having main reflector with concave surfaces,
It can have the axisymmetric parabolic shape of the symmetry axis on antenna, and arranged with the symmetry axis along antenna
Device is fed, for transmitting the electromagnetic wave for sending or receiving by antenna.It is associated with antenna house, have and surround reflector
Impervious protection face in the space limited relative to outside.The antenna house can be flexible or rigid.Planar rigidity day
Irdome, as nowadays most-often used type, show for the good of ambient weather environment as such as rain, wind or snow
The advantages of repellence.
Therefore, it is necessary to ensure to be firmly fixed, particularly resistant against blast, especially for the reflector of major diameter.
Fixed system must also be able to fast quick-detach/re-assembly, without damaging the antenna house on reflector.
Pencilbeam antenna for radio link application has distinctive radiation pattern, and it includes main lobe and approached
The secondary lobe of suppression, particularly in backward directions, i.e., it is+90 to+180 degree in side, is -90 to -180 degree in opposite side.In day
Line back side to leakage rediation there are multiple sources.Some undesirable radiation are due to spilling, reflector or protective cover
Peripheral edge on scattering of wave and RF radio waves by containing the small gap of existing air between each part of antenna
Leakage, each part of antenna particularly reflector, protective cover, antenna house mounting flange and antenna house.Because flange scatters
Ripple additivity, in -180 degree and+180 degree direction, this FAQs is more serious, due to identical physical length
The track of ripple, these ripples have identical phase.All these the reason for causing leakage rediation, are caused to radio link antenna
One of key parameter destruction：Its front-to-back ratio (F/B), it causes the reduction of antenna efficiency.
A kind of conventional solution is to use braid shielded, which improves the electricity between the part for fixed antenna cover
Contact.These braid shieldeds may be added to all crosspoints, in the intersection, two parts, such as protective cover,
Reflector, flange and reflector, are in contact with each other.The major defect of the solution is its extra cost, especially because
The increase of time needed for number of components and assembling aerial.The requirement of this component is handled with care, and which further increases installation cost.
The content of the invention
Therefore a solution is proposed, to reduce the leakage spoke of the ripple of the backward directions of the antenna with concave reflector
Penetrate, so as to improve the front-to-back ratio of the radiation pattern of multiple microwave bands.The solution proposed is a kind of is used for plane
, rigid antenna house be fixed to equipment on concave reflector.Fixed equipment must adapted to fixation can be especially by rigidity
The antenna house that material is formed, the rigid material be, for example, it is non-can hot-working material, including such as multilayer or honeycomb style is low
Density material.Fixed equipment must also be firm, reliable, cheap, and easily implement during assembly and disassembly.
Subject of the present invention is a kind of is used for flat plane antenna cover fixed to the equipment on the antenna reflector of concave surface, antenna house
With outer surface and inner surface, and reflector has outer surface and inner surface, the inner surface of antenna house and the interior table of reflector
Face is facing with each other.The equipment includes
- upper flange portion, it is arranged to against the outer surface of the antenna house and covers the reflector and described
The peripheral part of antenna house, and
- lower flange portion, it is arranged to the outer surface against the reflector.
Lower flange portion has the shape of the profile for the outer surface for being suitable for the reflector, and including at least one
Electromagnetism trap.
Electromagnetism trap can be arranged in the upper table of the outer surface of the direction reflector in the lower flange portion
On face, or it is arranged on the side surface in the direction upper flange portion in the lower flange portion.
According to one embodiment, electromagnetism trap can have slotted shape, and the groove has conductive surface.Preferably, the groove is gold
Plastics that are category or being coated by metal are made.
According on one side, the groove has straight or oblique side wall.The groove can have a section, and the section is selected from flat U
Tee section, round bottom U-shaped section and V-arrangement section.
According on the other hand, the width of groove is the magnitude of the fraction of antenna operating wavelength.Preferably, the width of groove is day
/ 10th magnitude of the operation wavelength of line.
According to another aspect, groove has the depth of the magnitude of a quarter of the operation wavelength for antenna.
According to a kind of modification, electromagnetism trap further comprises the edge along groove.Preferably, the width at edge is the work of antenna
Make the magnitude of a quarter of wavelength.
According to one embodiment, the surface in lower flange portion contacts with the surface in upper flange portion, the surface in lower flange portion with it is upper
The surface of flange portion forms acute angle.
According to one embodiment, the upper surface in lower flange portion further comprises at least one relief.Preferably, relief has
Height less than 5 millimeters.
According to another embodiment, the upper surface in lower flange portion and the outer surface of reflector form acute angle.
This provides the shape of uniqueness for lower flange portion, to improve the radio contact between antenna house and reflector.
This unique shape in lower flange portion is combined with the presence of electromagnetism trap, to reduce the leakage rediation of RF ripples.By this way,
Braid shielded is not needed, and avoids all shortcomings caused by it.Electromagnetism trap is a quarter wave mode, it is meant that it
A quarter of the depth close to the center operating wavelength of antenna.
A kind of wireless aerial includes being used for the equipment being fixed to flat plane antenna cover on the antenna reflector of concave surface, antenna house
Inner surface with outer surface and towards reflector, and reflector has outer surface and the inner surface towards antenna house, and this sets
It is standby to include：
- upper flange portion, it is arranged to against the outer surface of the antenna house and covers the reflector and described
The peripheral part of antenna house, and
- lower flange portion, the outer surface against the reflector is arranged to, there is the institute for being suitable for the reflector
The shape of the profile of outer surface is stated, and including at least one electromagnetism trap.
Microwave antenna including the fixed equipment due to overflow and scattering of wave caused by leak backward radiation in terms of and
In terms of front-to-back ratio (F/B), show than existing antenna better performance.When disposing the network of current and future, including this
The wireless aerial of fixed equipment shows the advantage protruded very much from the point of view of client, because having between antenna preferably wireless
It is electrically isolated, it is this to improve the more dense network for making it possible there is high power capacity.
Antenna can be applied to the microwave frequency of wide scope.It is not Parabolic that fixed equipment, which can also be applied to reflector,
Antenna, such as the antenna with the square reflector for base station.
Brief description of the drawings
By reading the description of following one embodiment, the features of the present invention and advantage will become obvious, and implement
The description of example is to travel naturally through non-limiting example and accompanying drawing provides, wherein：
- Fig. 1 is the schematic sectional view of the one embodiment for describing the connection between antenna reflector and antenna house,
- Fig. 2 is the perspective view for another embodiment for describing the connection between antenna reflector and antenna house,
- Fig. 3 a and 3b show prior art antenna and according to the 18.7GHz in the horizontal plane of the antenna of Fig. 1 embodiment
The comparison of the radiation diagram of frequency range；The intensity of radiation I in units of dB provides on the y axis, transmission/acceptance angle in units of degree
α is provided in x-axis；
- Fig. 4 is the schematic sectional view of the antenna with parabolic shape reflector, and it is included according to Fig. 1 embodiment
Connection between reflector and antenna house.
Embodiment
Fig. 1 shows the sectional view of the join domain between flat plane antenna cover 1 and concave reflector 2.Fixed equipment 3 includes
Upper flange portion 4 and lower flange portion 5.The insulated peripheral edge 6 of antenna house and the conductive peripheral edge 7 of reflector 2 are clipped in fixation and set
Between standby 3 upper flange portion 4 and lower flange portion 5.The upper flange portion 4 and lower flange portion 5 of fixed equipment 3 are made of an electrically conducting material,
Preferred metal materials.The upper flange portion 4 and lower flange portion 5 of fixed equipment 3 are fixed to each other, for example, by screw, folder or other
Similar device.
The principal risk that this component is presented is that radio wave leaks through peripheral edge 6 and the reflection of antenna house 1
Exist between the peripheral edge 7 of device 2, the peripheral edge 7 of reflector 2 and lower flange portion 5 and lower flange portion 5 and upper flange portion 4
Space, so as to increase the front-to-back ratio of antenna ra-diation pattern.Applicable standard, such as the class standards of ETSI 3, it is desirable to very high
Front-to-back ratio, be electrically isolated with ensuring that the high level between the antenna positioned at same position is wireless.
In order to reduce leakage rediation without using additional component (such as braid shielded), it is proposed that using only by the He of top 4
The mounting flange 3 that bottom 5 is formed comes assembling aerial cover 1 and reflector 2.Upper flange portion 4 is such as L-shaped, and its first
Branch 11 is resisted against the outer surface 10 of the peripheral edge 6 of antenna house 1, and the covering of the second branch 12 is positioned at the antenna of adjacent position
The periphery 8 of cover 1 and the periphery 9 of reflector 2.
Lower flange portion 5 has the shape of the profile for the outer surface for being suitable for reflector 2, such as is essentially with conventional shape
The cross section of triangle.In this example, the conventional shape in lower flange portion 5 is close to right angled triangle 13.Right angled triangle
Length correspond to lower flange portion 5 upper surface 14, upper surface 14 with against reflector 2 peripheral edge 7 outer surface 15
Coordinate.The height of right angled triangle corresponds to side surface 16 with lower flange portion 5, second point of side surface 16 and upper flange portion 4
The surface 17 of branch 12 contacts.
The side surface 16 in lower flange portion 5 is inclined, its plane with the contact surface 17 of second branch 12 in upper flange portion 4
18 form non-zero acute angle β.When 5 tight abutment each other of upper flange portion 4 and lower flange portion, this inclination can reduce upper flange portion 4
Gap between lower flange portion 5.This shape can improve the electrical contact with upper flange portion 4.Angle beta is excellent strictly greater than 0 °
About 10 ° of choosing.
At least one electromagnetism trap is established in lower flange portion 5.Electromagnetism trap 19 can be the shape of the groove with conductive wall.
Illustrate in embodiment, electromagnetism trap 19 is arranged on the upper surface 14 in lower flange portion 5, near side surface 16.Other electromagnetism traps
It can be arranged on the upper surface 14 in lower flange portion 5, and on the side surface 16.
The upper surface 14 in lower flange portion 5 can also set one or more reliefs 20.These reliefs 20 can be arranged on
On the end in the relative lower flange portion 5 in side surface 16.These reliefs 20 have the height less than 5mm, preferably about 1mm.It is floating
Convex 20 can improve the contact between the outer surface 15 of the peripheral edge 7 of the upper surface 14 in lower flange portion 5 and reflector 2.
According to a kind of unshowned modification, the narrower physical contact between lower flange portion 5 and the outer surface 15 of reflector 2
It can be ensured by the inclination of the upper surface 14 in lower flange portion 5, the upper surface 14 in lower flange portion 5 and the outer surface of reflector 2
15 form acute angle.Instantly when flange portion 5 and reflector 2 are tightened against each other, this can reduce the gap between two parts.
Fig. 2 shows the perspective view of another embodiment in lower flange portion 30, the inside in lower flange portion 30 from corresponding to
The surface of the hypotenuse 31 of right angled triangle 32 is hollowed out, and right angled triangle 32 approx represents the shape in lower flange portion 30.Laxative remedy
Blue portion 30 is formed by the material of conductive surface, such as metal or the plastics with the coat of metal.
Lower flange portion 30 includes electromagnetism trap, the similar groove 33 in the upper surface 34 in lower flange portion 30 of its shape.Groove 33
It is arranged near the side surface 35 in the lower flange portion 30 of the height corresponding to right angled triangle 32.Groove 33 has width G and depth
P, width G and depth P depend on the operation wavelength λ of antenna.The operating principle of such electromagnetism trap based on the fact that, i.e., it
Local wave phase skew is produced, it is then placed in the phase opposite with main ripple and is cancelled.The width G of groove 33 is antenna
Operation wavelength λ 1/10th magnitude.The depth G of groove 33 is the magnitude of the operation wavelength λ of antenna a quarter.Cause
This, any potential danger of the radio leakage between reflector 2 and lower flange portion 30 is minimized.
Groove 33 has side wall, and it can be straight or inclined.Groove 33 can have flat U-shaped section, the U-shaped of round bottom to cut open
Face and V-shaped section.
Electromagnetism trap may further include the edge 36 along groove 33.The thickness E at edge 36 is preferably the operating wave of antenna
The magnitude of long λ a quarter.The wall 38 of the wall 37 of groove 33 on the sidepiece of edge 36 and the groove 33 on opposite side it
Between height difference H be it is very small, its for antenna operation wavelength λ 1/10th magnitude.
The upper surface 34 and/or side surface 35 in lower flange portion 30 can include other electromagnetism traps.The upper table in lower flange portion 30
Face 34 can further set one or more reliefs 39, such as form groove.
Fig. 3 a and 3b show the radiation diagram of the antenna in the horizontal plane in 18.7GHz frequency ranges.On the two figures, even
Continuous datum line 40 represents the standard profile corresponding to the class models of ETSI 3.
In fig. 3 a, there is secondary lobe 42 relative to the figure of the radiation 41 of prior art antenna, it exceedes etsi standard.
By contrast, including the secondary lobe 43 of the radiation diagram 44 of the antenna of previously described fixed equipment greatly reduces.Radiation
The value of figure remains the maximum that the class templates of ETSI 3 in transmission/range of receiving allow.This shows that fixed equipment is that one kind subtracts
The effective way of the leakage rediation of the ripple at the antenna back side is moved to less.
Antenna 20 with parabolic shape reflector 21 and planar rigidity cover 22 is schematically shown in Fig. 4.Antenna house
22 include outer surface 23 and inner surface 24.Reflector 21 includes outer surface 25 and inner surface 26.The He of inner surface 24 of antenna house 22
The inner surface 26 of reflector 21 is facing with each other.The peripheral edge of antenna house 22 is adhered to the peripheral edge of reflector 21.It is all
These edges are sandwiched between the upper flange portion 27 of fixed equipment and lower flange portion 28.
Naturally, the invention is not restricted to described embodiment, but it is achievable perhaps to be constrained to those skilled in the art
Multiple changing type, without departing from the spirit of the present invention.The scheme proposed is not limited to specific Microwave Frequency Domain；On the contrary, it can be applicable
In the different frequency domains with the size suitable for respective wavelength.
Claims (15)
1. it is a kind of be used for by flat plane antenna cover be fixed to concave surface antenna reflector on equipment, the antenna house have outer surface and
Inner surface, and the reflector has an outer surface and inner surface, the inner surface of the antenna house and the reflector
The inner surface is facing with each other, and the equipment includes：
Upper flange portion, it is arranged to against the outer surface of the antenna house and covers the reflector and the antenna house
Peripheral part, and
Lower flange portion, the outer surface against the reflector is arranged to, has and be suitable for the described outer of the reflector
The shape of the profile on surface, and including at least one electromagnetism trap.
2. equipment according to claim 1, wherein the direction that the electromagnetism trap is arranged in the lower flange portion is described anti-
On the upper surface of the outer surface of emitter, or it is arranged in the side surface in the direction upper flange portion in the lower flange portion
On.
3. equipment according to claim 1, wherein the electromagnetism trap has the shape of conductive surface groove.
4. equipment according to claim 3, wherein the groove has straight or inclined side wall.
5. equipment according to claim 3, wherein the groove has section, the section is selected from flat U-shaped section, circle
The U-shaped section and V-arrangement section at bottom.
6. equipment according to claim 3, wherein magnitude of the width of the groove for the fraction of the operation wavelength of antenna.
7. equipment according to claim 6, wherein the width of the groove is 1/10th of the operation wavelength of the antenna
Magnitude.
8. equipment according to claim 6, wherein a quarter of the depth of the groove for the operation wavelength of the antenna
Magnitude.
9. equipment according to claim 3, wherein the electromagnetism trap further comprises along the edge of the groove.
10. equipment according to claim 9, wherein the width at the edge is a quarter of the operation wavelength of antenna
Magnitude.
11. equipment according to claim 1, wherein the surface on a surface in the lower flange portion and the upper flange portion
Contact, the surface on the surface in the lower flange portion and the upper flange portion form acute angle.
12. equipment according to claim 1, wherein the upper surface in the lower flange portion is characterized by least one relief.
13. equipment according to claim 12, wherein the relief has the height less than 5 millimeters.
14. equipment according to claim 1, wherein the upper surface in the lower flange portion and the appearance of the reflector
Face forms acute angle.
15. a kind of wireless aerial, including it is according to claim 1 anti-for flat plane antenna cover to be fixed into concave surface antenna
Equipment in emitter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13305221.7 | 2013-02-27 | ||
| EP13305221.7A EP2772985B1 (en) | 2013-02-27 | 2013-02-27 | System for attaching a planar radome to the concave reflector of an antenna |
| PCT/IB2014/059234 WO2014132190A1 (en) | 2013-02-27 | 2014-02-25 | System for fastening a flat radome onto the concave reflector of an antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105122543A CN105122543A (en) | 2015-12-02 |
| CN105122543B true CN105122543B (en) | 2018-03-20 |
Family
ID=47844235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480010762.8A Active CN105122543B (en) | 2013-02-27 | 2014-02-25 | System for being fixed to flat plane antenna cover on the concave reflector of antenna |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2772985B1 (en) |
| CN (1) | CN105122543B (en) |
| WO (1) | WO2014132190A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3001504B1 (en) * | 2014-09-24 | 2019-09-11 | Alcatel- Lucent Shanghai Bell Co., Ltd | Assembly device for attaching an element provided with a flat flange on a substrate |
| US11955711B2 (en) | 2019-03-14 | 2024-04-09 | Huawei Technologies Co., Ltd. | Redirecting structure for electromagnetic waves |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201523074U (en) * | 2009-07-15 | 2010-07-07 | 江苏华灿电讯股份有限公司 | Dual-polarized intelligent integrated antenna |
| CN102714343A (en) * | 2009-12-11 | 2012-10-03 | 安德鲁有限责任公司 | Reflector antenna radome attachment band clamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4581615A (en) * | 1983-02-08 | 1986-04-08 | Levy Stanley P | Double reflector antenna with integral radome reflector support |
| JP3206016B2 (en) * | 1991-05-21 | 2001-09-04 | 凸版印刷株式会社 | Planar antenna |
| SE512439C2 (en) * | 1998-06-26 | 2000-03-20 | Allgon Ab | Dual band antenna |
| US7701409B2 (en) * | 2005-06-29 | 2010-04-20 | Cushcraft Corporation | System and method for providing antenna radiation pattern control |
| JP4725378B2 (en) * | 2006-03-16 | 2011-07-13 | 日本電気株式会社 | Parabolic antenna assembly method, assembly jig, and radome mounting bracket |
| JP5308238B2 (en) * | 2009-05-28 | 2013-10-09 | 日本無線株式会社 | Protective case waterproof structure |
-
2013
- 2013-02-27 EP EP13305221.7A patent/EP2772985B1/en active Active
-
2014
- 2014-02-25 WO PCT/IB2014/059234 patent/WO2014132190A1/en active Application Filing
- 2014-02-25 CN CN201480010762.8A patent/CN105122543B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201523074U (en) * | 2009-07-15 | 2010-07-07 | 江苏华灿电讯股份有限公司 | Dual-polarized intelligent integrated antenna |
| CN102714343A (en) * | 2009-12-11 | 2012-10-03 | 安德鲁有限责任公司 | Reflector antenna radome attachment band clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2772985B1 (en) | 2018-08-08 |
| CN105122543A (en) | 2015-12-02 |
| WO2014132190A1 (en) | 2014-09-04 |
| EP2772985A1 (en) | 2014-09-03 |
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