CN106299619A - A kind of fan-shaped omnidirectional antenna - Google Patents
A kind of fan-shaped omnidirectional antenna Download PDFInfo
- Publication number
- CN106299619A CN106299619A CN201610700318.XA CN201610700318A CN106299619A CN 106299619 A CN106299619 A CN 106299619A CN 201610700318 A CN201610700318 A CN 201610700318A CN 106299619 A CN106299619 A CN 106299619A
- Authority
- CN
- China
- Prior art keywords
- antenna
- fan
- antenna units
- omnidirectional antenna
- metallic rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
Abstract
The present invention relates to radar omnidirectional antenna, particularly to a kind of fan-shaped omnidirectional antenna.Eight sector antenna units of the present invention are distributed in metallic rod upper end；Taper reflector is rotational symmetry structure the lower end being installed on metallic rod, keeper is rotational symmetry structure, being uniformly distributed 8 on it and install groove, groove is for sector antenna units location and installation, and eight sector antenna units are isolated by location insulator with taper reflector.The fan-shaped omnidirectional antenna of the present invention is symmetrically installed, and makes antenna well meet omnidirectional radiation characteristic, and is greatly reduced antenna size, and the taper reflector of the present invention can improve omnidirectional radiation characteristic and the further broadening beamwidth of antenna simultaneously.
Description
Technical field
The present invention relates to radar omnidirectional antenna, particularly to a kind of fan-shaped omnidirectional antenna, it is adaptable to L, S, C, X-band radar
Antenna-feedback system, is a kind of ultra-wideband antenna.
Background technology
At present, omnidirectional antenna is widely used on the equipment such as various radar, communication；Omnidirectional antenna simple in construction, it is prone to
Make and production cost is relatively low, azimuth plane omnidirectional characteristic is good, coverage is big.
But along with the development of omnidirectional antenna, people are to omnidirectional antenna miniaturization and broadband have higher requirement.Existing
Some omnidirectional antennas can not meet the requirement being symmetrically installed, and then make antenna omnidirectional radiation characteristic poor, antenna size is bigger.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of fan-shaped omnidirectional antenna.The fan-shaped omnidirectional antenna of the present invention
Being symmetrically installed, make antenna well meet omnidirectional radiation characteristic, and be greatly reduced antenna size, the taper of the present invention is anti-simultaneously
Beam can improve omnidirectional radiation characteristic and the further broadening beamwidth of antenna.
The technical scheme is that a kind of fan-shaped omnidirectional antenna, including eight sector antenna units, metallic rod, location
Part, location insulator, taper reflector and N Connector, it is characterised in that: eight described sector antenna units are distributed in gold
Belong to bar upper end；Taper reflector is rotational symmetry structure the lower end being installed on metallic rod, and keeper is rotational symmetry structure, its
On be uniformly distributed 8 grooves be installed, groove is for sector antenna units location and installation, and eight sector antenna units are anti-with taper
Beam is isolated by location insulator.
According to fan-shaped omnidirectional antenna as above, it is characterised in that: described taper reflector is rotational symmetry structure,
Arranging through hole inside taper reflector, metallic rod is through to bottom taper reflector from sector antenna units top through through hole,
Metallic rod end is connected with the inner wire of N Connector.
According to fan-shaped omnidirectional antenna as above, it is characterised in that: described metallic rod is a diameter of φ 3, and height is
The copper rod of 95mm to 110mm, topmost portion has screw thread.
According to omnidirectional antenna as above fan-shaped, it is characterised in that: keeper have adjacent between become 8 of 45 degree of angles
Groove, groove depth 3mm to 5mm.
According to fan-shaped omnidirectional antenna as above, it is characterised in that: described sector antenna units is four/half
Disk.
According to omnidirectional antenna as above fan-shaped, it is characterised in that: described sector antenna units radius be 60mm extremely
70mm, thickness is 0.5mm to 1mm.
According to fan-shaped omnidirectional antenna as above, it is characterised in that: described fan-shaped omnidirectional antenna also includes three
Strut, three support bars play a supportive role.
The invention has the beneficial effects as follows: antenna structure is simple, and volume is little, lightweight, and omnidirectional antenna is horizontal polarization, voltage
Standing-wave ratio is less than 2, and in the bandwidth of 169%, antenna meets omnidirectional radiation characteristic, and is greatly reduced antenna size.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is sector antenna units schematic diagram；
Fig. 3 is location and installation part schematic diagram；
Fig. 4 is taper reflector schematic diagram.
Detailed description of the invention
Description of reference numerals: sector antenna units 1, keeper 2, groove 21, metallic rod 3, location insulator 4, taper are anti-
Beam 5, through hole 51, support bar 6, N Connector 7.
Below in conjunction with drawings and Examples, the present invention is further described.
It is L, S, C, X-band that the fan-shaped omnidirectional antenna of the present invention is suitable for frequency range.As shown in Figure 1, the present invention's is fan-shaped complete
Eight sector antenna units 1, metallic rod 3, keeper 2, location insulator 4, taper reflector 5, N Connector is included to antenna
7 and three support bars 6.Eight sector antenna units 1 of the present invention are rotational symmetry structure, eight sector antenna units 1 one-tenth etc.
Angle is arranged in the groove 21 of keeper 2, and i.e. the angle between the adjacent sector antenna units of each two 1 is 45 degree.Eight fans
Shape antenna element 1 is distributed in metallic rod 3 upper end.Taper reflector 5 is rotational symmetry structure the lower end being installed on metallic rod 3.
Eight sector antenna units 1 are isolated by location insulator 4 with taper reflector 5.Three support bars 6 play a supportive role, it is simple to N
Type adapter 7 accesses feeder line.
The metallic rod 3 of the present invention is a diameter of φ 3, and height is the copper rod of 95mm to 110mm, and topmost portion has screw thread.Gold
Belonging to bar 3 to be connected with the screwed hole on keeper 2 by screw thread, metallic rod 3 may insure that eight sector antenna units 1 are anti-with taper
Beam 5 relative position relation is fixed.
As shown in Figure 3, keeper 2 is rotational symmetry structure, it is uniformly distributed 8 and installs groove 21, it is simple to eight
Angularly fixing of sector antenna units 1, it is ensured that omnidirectional antenna azimuth plane rises and falls little.In the present invention, if not setting keeper
2, directly eight sector antenna units 1 are welded on metallic rod 3, the manufacture difficulty of this antenna can be improved, need technology thoroughly cooked
The welder practiced operates, and secondly, after welding, sector antenna units 1 is not easy to change, the sector antenna units 1 welded
Use in the early stage and may ensure that azimuth plane fluctuating is less, but after life-time service, due to the deformation of weldment, its azimuth plane rises
Volt substantially becomes big, and cannot adjust.
As shown in Figure 3, keeper 2 has into 8 grooves 21 at 45 degree of angles, groove depth 3mm to 5mm, error 0.1mm, groove
Between angular error 0.5 degree.Groove depth is inconsistent will cause sector antenna units 1 can not align in short transverse, will make antenna omnidirectional
Radiation characteristic deteriorates.Article 8, between groove groove, angular error is crossed senior general and is made antenna omnidirectional radiation characteristic deteriorate.
As shown in Figure 2, sector antenna units 1 simple in construction, size is little, lightweight.It is arranged on the groove 21 of keeper 2
In, then the side of metallic rod 3 top half it is fixed on scolding tin.The sector antenna units 1 of the present invention can be four/half
Disk.Sector antenna units 1 is roughly the same with the radiation effect of disk antenna element, but sector antenna units 1 uses four points
One of after halfround bar slice, antenna size will be substantially reduced, it is achieved miniaturization.In the present invention sector antenna units 1 radius be 60mm extremely
70mm, thickness is 0.5mm to 1mm, is arranged in the groove 21 of keeper 2, the preferred copper coin material of sector antenna units 1 in the present invention
Material makes.
In the present invention, two sector antenna units 1 in 180 degree are symmetrical antenna unit, and eight sector antenna units 1 are
Four groups of symmetrical antenna unit.Often the directional diagram of group symmetrical antenna unit becomes splayed, covers 90 degree, sector antenna units 1 number
During not less than 8, antenna has preferable omnidirectional radiation characteristic.Along with sector antenna units 1 increased number, antenna feed impedance
Real part tapers into, and imaginary part becomes larger, and when sector antenna units 1 number is more than or equal to 10, the input impedance of antenna cannot
Realizing coupling in whole frequency band range, antenna loses ultra broadband characteristic.The number optimum of sector antenna units 1 is 8.
As shown in Figure 4, the taper reflector 5 of the present invention is rotational symmetry structure, it is achieved antenna omnidirectional radiation characteristic, exhibition
Wide bandwidth of operation.Taper reflector 5 is internal arranges through hole 51, and metallic rod 3 is through to taper reflection from sector antenna units 1 top
Bottom body 5, metallic rod 3 end is connected with the inner wire of N Connector 7.
The location insulator 4 of the present invention is politef with the dielectric material of N Connector 7.Politef has knot
Structure intensity is high, low cost, the features such as high-low temperature resistant is effective, corrosion-resistant, salt fog, waterproof.
Claims (7)
1. a fan-shaped omnidirectional antenna, including eight sector antenna units (1), metallic rod (3), keeper (2), location insulator
(4), taper reflector (5) and N Connector (7), it is characterised in that: eight described sector antenna units (1) are distributed in gold
Belong to bar (3) upper end；Taper reflector (5) is rotational symmetry structure the lower end being installed on metallic rod (3), and keeper (2) is rotation
Turning symmetrical structure, it is uniformly distributed 8 and installs groove (21), groove (21) is used for sector antenna units (1) location and installation,
Eight sector antenna units (1) are isolated by location insulator (4) with taper reflector (5).
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: described taper reflector (5) is right for rotating
Claiming structure, taper reflector (5) is internal arranges through hole (51), metallic rod (3) from sector antenna units (1) top through through hole
(51) being through to taper reflector (5) bottom, metallic rod (3) end is connected with the inner wire of N Connector (7).
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: described metallic rod (3) is a diameter of φ 3,
Being highly the copper rod of 95mm to 110mm, topmost portion has screw thread.
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: keeper (2) have adjacent between become 45 degree
8 grooves (21) at angle, groove depth 3mm to 5mm.
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: described sector antenna units (1) is four points
One of halfround bar slice.
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: described sector antenna units (1) radius is
60mm to 70mm, thickness is 0.5mm to 1mm.
Fan-shaped omnidirectional antenna the most according to claim 1, it is characterised in that: described fan-shaped omnidirectional antenna also includes three
Support bar (6), three support bars (6) play a supportive role.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700318.XA CN106299619B (en) | 2016-08-22 | 2016-08-22 | A kind of sector omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700318.XA CN106299619B (en) | 2016-08-22 | 2016-08-22 | A kind of sector omnidirectional antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106299619A true CN106299619A (en) | 2017-01-04 |
| CN106299619B CN106299619B (en) | 2019-04-05 |
Family
ID=57661075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610700318.XA Active CN106299619B (en) | 2016-08-22 | 2016-08-22 | A kind of sector omnidirectional antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106299619B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273826A (en) * | 2018-12-11 | 2019-01-25 | 成都九华圆通科技发展有限公司 | A kind of vehicle-mounted ultrashort wave microwave omnidirectional monitoring aerial |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485486A (en) * | 1982-08-03 | 1984-11-27 | Motorola, Inc. | Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system |
-
2016
- 2016-08-22 CN CN201610700318.XA patent/CN106299619B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485486A (en) * | 1982-08-03 | 1984-11-27 | Motorola, Inc. | Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273826A (en) * | 2018-12-11 | 2019-01-25 | 成都九华圆通科技发展有限公司 | A kind of vehicle-mounted ultrashort wave microwave omnidirectional monitoring aerial |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106299619B (en) | 2019-04-05 |
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