CN107732437A - Broadband low section horizontally polarized omnidirectional antenna - Google Patents
Broadband low section horizontally polarized omnidirectional antenna Download PDFInfo
- Publication number
- CN107732437A CN107732437A CN201710779425.0A CN201710779425A CN107732437A CN 107732437 A CN107732437 A CN 107732437A CN 201710779425 A CN201710779425 A CN 201710779425A CN 107732437 A CN107732437 A CN 107732437A
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- Prior art keywords
- dielectric
- slab
- horizontally polarized
- omnidirectional antenna
- polarized omnidirectional
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- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of broadband low section horizontally polarized omnidirectional antenna, belong to field of antenna.Broadband low section horizontally polarized omnidirectional antenna includes：Feeding network and radiating doublet annular array；Feeding network is etched in the front of dielectric-slab, and radiating doublet annular array is located at the back side of dielectric-slab, and radiating doublet annular array includes four pairs of symmetrical dipoles, symmetrical dipole and the back-to-back setting of microstrip-fed line；The input point of one point of four power divider is coaxially connected in feed connection through dielectric-slab, the input point of one point of four power divider is located at the front home position of dielectric-slab, input of four output points of one point of four power divider respectively with four transformer sections is connected, and the output end of transformer section connects with corresponding couple feed section；The ring flange of feed connection is connected with being arranged at the metal floor of medium back, and ring flange is arranged at medium back home position, and radiating doublet annular array is connected with metal floor, and adjacent two symmetrical dipoles are orthogonal.
Description
Technical field
The invention belongs to field of antenna, more particularly to broadband low section horizontally polarized omnidirectional antenna.
Background technology
For using for vertical depolarized omnidirectional antenna, use level polarized omnidirectional antenna has more preferable far field radiation special
Property, it is typically big for same input power, use level polarized omnidirectional antenna coverage.In a mobile communication device,
Horizontally polarized omnidirectional antenna is widely applied very much.Existing horizontally polarized omnidirectional antenna is in order to meet the requirement of omnidirectional radiation
Array element need to be increased, so as to add the area of antenna.
The content of the invention
The invention aims to solve the problems, such as the omnidirectional radiation of horizontally polarized omnidirectional antenna, the present invention provides a kind of
Broadband low section horizontally polarized omnidirectional antenna.
A kind of broadband low section horizontally polarized omnidirectional antenna of the present invention, is etched on dielectric-slab, and the dielectric-slab is in circle
Shape, the broadband low section horizontally polarized omnidirectional antenna include：Feeding network and radiating doublet annular array；The feeding network
The front of the dielectric-slab is etched in, the feeding network includes one point of four power divider and four microstrip-fed lines, described
Microstrip-fed line includes transformer section and couple feed section；The radiating doublet annular array is located at the back of the body of the dielectric-slab
Face, the radiating doublet annular array include four pairs of symmetrical dipoles, and the symmetrical dipole corresponds with the microstrip-fed line,
The symmetrical dipole and the microstrip-fed back-to-back setting of line；
Coaxially connect the input point of one point of four power divider in feed connection through the dielectric-slab, described one point
The input point of four power dividers is located at the front home position of the dielectric-slab, and four of one point of four power divider are defeated
Go out the input a little respectively with four transformer sections to be connected, the output end of the transformer section is presented with the corresponding coupling
Electric section connection；
The ring flange of the feed connection is connected with being arranged at the metal floor of the medium back, and the ring flange is set
The medium back home position is placed in, the radiating doublet annular array is connected with the metal floor, adjacent two
The symmetrical dipole is orthogonal.
Preferably, the output point of one point of four power divider is connected by right angle kink with input point, described straight
The long length of side 3.8mm of angle kink, short side long 1.6mm, long hem width 0.4mm, the wide 0.4mm of short side.
Preferably, the transformer section is in isosceles trapezoid, and the upper bottom of isosceles trapezoid is shorter than bottom, the trapezoidal upper bottom shape of waist
Into the input of the transformer section, the trapezoidal bottom of waist forms the output end of the transformer section.
Preferably, a height of 15mm of the isosceles trapezoid.
Preferably, the couple feed section is in gate, and the gate includes long side, short side and connection side, long side and short side
Being connected by connecting side, one end of long side is connected with the output end of the transformer section, long length of side 17.7mm, long hem width 2mm,
Length of side 5.85mm is connected, connects hem width 2mm, the long 15mm of short side, the wide 1.2mm of short side.
Preferably, the radius of the dielectric-slab is 45mm.
Preferably, the metal floor is rounded, and the center of circle of metal floor overlaps with the center of circle at the back side of the dielectric-slab,
The radius of the metal floor is 13mm.
Preferably, the oscillator brachium 35mm of the symmetrical dipole, the wide 15mm of oscillator arms, the gap between symmetrical dipole are
1.8mm, the long 19.3mm of symmetrical dipole array element, the wide 3mm of symmetrical dipole array element, symmetrical dipole array element end are first with symmetrical dipole array element
Difference in height between end is 5.2mm.
Preferably, in addition to：Four down-lead devices, the down-lead device correspond with the symmetrical dipole, the down-lead device
In front of the curved array element for loading on the symmetrical dipole, positioned at the dielectric-slab edge.
Preferably, the wide 2mm of the down-lead device, the down-lead device are 45 degree with center of antenna angle.
Above-mentioned technical characteristic can in any suitable manner be combined or substituted by equivalent technical characteristic, as long as can reach
To the purpose of the present invention.
The beneficial effects of the present invention are pass through the radiating doublet annular array that is made up of symmetrical dipole shape in the horizontal direction
It is distributed into a ring current, realizes horizontally polarized omnidirectional radiation characteristic.
Brief description of the drawings
Fig. 1 is the positive structure schematic of low section horizontally polarized omnidirectional antenna in broadband of the present invention；
Fig. 2 is the enlarged diagram of a-quadrant in Fig. 1；
Fig. 3 is the structure schematic diagram of low section horizontally polarized omnidirectional antenna in broadband of the present invention；
Fig. 4 is voltage standing wave ratio simulation result curve map；
Fig. 5 a are normalization direction E faces simulation result figure；
Fig. 5 b are normalization direction H faces simulation result figure；
Fig. 6 is antenna input port | S11| emulation and test result curve map；
Fig. 7 a are that antenna normalizes radiation direction E faces test result figure；
Fig. 7 b are that antenna normalizes radiation direction H faces test result figure；
Fig. 8 is antenna gain emulation and test result curve map.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as limiting to the invention.
A kind of broadband low section horizontally polarized omnidirectional antenna, is etched on dielectric-slab, and dielectric-slab is rounded, broadband low section
Horizontally polarized omnidirectional antenna includes：Feeding network and radiating doublet annular array；Feeding network is etched in the front of dielectric-slab, feedback
Electric network includes one point of four power divider 3 and four microstrip-fed lines, and microstrip-fed line includes transformer section 2 and coupling is presented
Electric section 1；Radiating doublet annular array is located at the back side of dielectric-slab, and radiating doublet annular array includes four pairs of symmetrical dipoles 5, symmetrically
Oscillator 5 corresponds with microstrip-fed line, symmetrical dipole 5 and the back-to-back setting of microstrip-fed line；
The input point of one point of four power divider 3, one point of four power distribution are coaxially connected in feed connection through dielectric-slab
The input point of device 3 is located at the front home position of dielectric-slab, and four output points of one point of four power divider 3 hinder with four respectively
The input connection of anti-transforming section 2, the output end of transformer section 2 connect with corresponding couple feed section 1；
The ring flange of feed connection is connected with being arranged at the metal floor 4 of medium back, and ring flange is arranged at dielectric-slab
Back side home position, radiating doublet annular array are connected with metal floor 4, and adjacent two symmetrical dipoles 5 are orthogonal.
In the present embodiment, it is 2mm that antenna, which is etched in thickness, and relative dielectric constant is on 3.0 dielectric-slab.The antenna is adopted
Fed with SMA-KFD joints, the ring flange of feed connection is connected with the metal floor 4 of medium back, in feed connection
Dielectric-slab coaxially is passed through, is connected with feed line above, then passes through one one point four power dividers 3 and gradual change type impedance
The upper couple feed section 1 of matching section connection, feeding network is presented by way of couple feed to four array elements of symmetrical dipole 5
Electricity.
As shown in Fig. 2 in a preferred embodiment, the output point of one point of four power divider 3 by right angle kink with
Input point connects, the long length of side L of right angle kink1For 3.8mm, the long L of short side2For 1.6mm, long hem width W1It is wide for 0.4mm, short side
0.4mm。
In a preferred embodiment, transformer section 2 is in isosceles trapezoid, and the upper bottom of isosceles trapezoid is shorter than bottom, and waist is trapezoidal
Upper bottom formed transformer section 2 input, the trapezoidal bottom of waist forms the output end of transformer section 2.
Further, the high L of isosceles trapezoid3For 15mm.
In a preferred embodiment, couple feed section 1 is in gate, and gate includes long side, short side and connection side, long side with it is short
Connected while by connecting, one end of long side is connected with the output end of transformer section 2, long length of side L4For 17.7mm, long hem width W2
For 2mm, connection length of side L5For 5.85mm, connection hem width W3For 2mm, the long L of short side6For 15mm, the wide W of short side4For 1.2mm.
In a preferred embodiment, the radius R of dielectric-slab1For 45mm.
In a preferred embodiment, metal floor 4 is rounded, the center of circle at the center of circle of metal floor 4 and the back side of dielectric-slab
Overlap, the radius R of metal floor 42For 13mm.
In a preferred embodiment, the oscillator brachium L of symmetrical dipole 59For 35mm, the wide W of a pair of oscillator arms5For 15mm, symmetrically
Gap g between oscillator 5 is 1.8mm, the long L of the array element of symmetrical dipole 57For 19.3mm, the wide W of the array element of symmetrical dipole 57For 3mm, symmetrically shake
Difference in height L between sub 5 array element ends and the array element head end of symmetrical dipole 58For 5.2mm.
In a preferred embodiment, in addition to：Four down-lead devices 7, down-lead device 7 correspond with symmetrical dipole 5, down-lead device
In front of the 7 curved array elements for loading on symmetrical dipole 5, positioned at dielectric-slab edge.
Further, 7 wide W of down-lead device6For 2mm, down-lead device 7 and center of antenna angle Theta is 45 degree.
In the present embodiment, in order to allow each radiating element to realize directed radiation, to form a ring battle array, so as to reach
Omnidirectional radiation effect, down-lead device 7 is all loaded before each array element, the down-lead device 7 guides adding for sheet metal into using sheet metal is guided into
Carry the bandwidth of operation for also further improving antenna.
With reference to shown in Fig. 1-Fig. 3, each physical dimension parameter of broadband low section horizontally polarized omnidirectional antenna of the invention
Value such as (the unit of table 1：mm)
Table 1
Emulation is modeled to the antenna using electromagnetic simulation software, and physical dimension is optimized, is obtained best
Optimization Simulation result.Simulation result shows that the method for guiding sheet metal into by using couple feed and loading, the antenna exists
In 1.7GHz-2.8GHz frequency band ranges, input port VSWR (Voltage Standing Wave Ratio, voltage standing wave ratio)
Substantially less than 2.0, VSWR simulation results are as shown in Figure 4.
The antenna each frequency normalization antenna pattern as shown in Fig. 5 a- Fig. 5 b, radiation direction of the antenna in E faces
A circle is presented in figure, and in H faces, a ∞ font is presented in directional diagram.It can be seen that antenna all has well in whole frequency band
Omnidirectional radiation characteristic, it is more than 1dB in whole working band internal antenna gain, directional diagram out-of-roundness is less than 3dB.And antenna have it is good
Good horizontal polarization radiation characteristic, antenna height are less than 2.0mm.
The antenna material object is tested using Agilent N5227A models vector network analyzer, obtains antenna input
Mouthful | S11 | measured value, and contrasted with Electromagnetic Simulation result, as shown in Figure 6.It can be seen that antenna | S11 | measured value is with imitating
True result has some skews compared to frequency band, and this is due to that the relative dielectric constant of dielectric-slab is unstable caused.Measured result table
It is bright, the antenna in 1.85GHz-3.0GHz frequency band ranges, | S11 | be approximately less than 2.0 less than -10dB, VSWR.
Far field antenna pattern test is carried out to antenna material object in microwave dark room, antenna E faces and H surface radiation directional diagrams are imitated
True and test result is as shown in Fig. 7 a- Fig. 7 b, it can be seen that the test result and simulation result of directional diagram are fitted very well.Antenna
Circle is presented in E faces directional diagram, and H faces directional diagram is then ∞ shapes.It can be seen that antenna has horizontally polarized omnidirectional radiation characteristic, and radiation side
3dB is approximately less than to figure out-of-roundness.Fig. 8 is emulation and the test result of the antenna gain, it can be seen that antenna is in 1.8GHz-
In 2.9GHz frequency band ranges, gain G is generally higher than 1dB.Antenna height is less than 2.0mm, realizes the low section effect of antenna.
Although the present invention is described herein with reference to specific embodiment, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that exemplary embodiment can be carried out
Many modifications, and other arrangements are can be designed that, the spirit of the invention limited without departing from appended claims
And scope.It should be understood that different appurtenances can be combined by way of different from described by original claim
Profit requires and feature specifically described herein.It will also be appreciated that the feature with reference to described by separate embodiments can use
In other described embodiments.
Claims (10)
1. a kind of broadband low section horizontally polarized omnidirectional antenna, is etched on dielectric-slab, it is characterised in that the dielectric-slab is in circle
Shape, the broadband low section horizontally polarized omnidirectional antenna include：Feeding network and radiating doublet annular array；The feeding network
The front of the dielectric-slab is etched in, the feeding network includes one point of four power divider and four microstrip-fed lines, described
Microstrip-fed line includes transformer section and couple feed section；The radiating doublet annular array is located at the back of the body of the dielectric-slab
Face, the radiating doublet annular array include four pairs of symmetrical dipoles, and the symmetrical dipole corresponds with the microstrip-fed line,
The symmetrical dipole and the microstrip-fed back-to-back setting of line；
The input point of one point of four power divider, one point of four work(are coaxially connected in feed connection through the dielectric-slab
The input point of rate distributor is located at the front home position of the dielectric-slab, four output points of one point of four power divider
The input with four transformer sections is connected respectively, the output end of the transformer section and the corresponding couple feed section
Connection；
The ring flange of the feed connection is connected with being arranged at the metal floor of the medium back, and the ring flange is arranged at
The medium back home position, the radiating doublet annular array are connected with the metal floor, described in adjacent two
Symmetrical dipole is orthogonal.
2. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that one point of four power
The output point of distributor is connected by right angle kink with input point, the long length of side 3.8mm of the right angle kink, short side length
1.6mm, long hem width 0.4mm, the wide 0.4mm of short side.
3. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that the transformer section
In isosceles trapezoid, the upper bottom of isosceles trapezoid is shorter than bottom, and the trapezoidal upper bottom of waist forms the input of the transformer section, waist ladder
The bottom of shape forms the output end of the transformer section.
4. low section horizontally polarized omnidirectional antenna in broadband according to claim 3, it is characterised in that the isosceles trapezoid
A height of 15mm.
5. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that the couple feed section
In gate, the gate includes long side, short side and connection side, and long side is connected with short side by being connected side, one end of long side and institute
State the output end connection of transformer section, long length of side 17.7mm, long hem width 2mm connect length of side 5.85mm, connection hem width 2mm, short
Length of side 15mm, the wide 1.2mm of short side.
6. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that the half of the dielectric-slab
Footpath is 45mm.
7. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that the metal floor is in
Circle, the center of circle of metal floor overlap with the center of circle at the back side of the dielectric-slab, and the radius of the metal floor is 13mm.
8. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that the symmetrical dipole
Oscillator brachium 35mm, the wide 15mm of oscillator arms, the gap between symmetrical dipole is 1.8mm, the long 19.3mm of symmetrical dipole array element, is symmetrically shaken
The wide 3mm of submatrix member, the difference in height between symmetrical dipole array element end and symmetrical dipole array element head end is 5.2mm.
9. low section horizontally polarized omnidirectional antenna in broadband according to claim 1, it is characterised in that also include：Four are drawn
Line device, the down-lead device correspond with the symmetrical dipole, the curved battle array for loading on the symmetrical dipole of the down-lead device
First front, positioned at the dielectric-slab edge.
10. low section horizontally polarized omnidirectional antenna in broadband according to claim 9, it is characterised in that the down-lead device is wide
2mm, the down-lead device are 45 degree with center of antenna angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779425.0A CN107732437A (en) | 2017-09-01 | 2017-09-01 | Broadband low section horizontally polarized omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779425.0A CN107732437A (en) | 2017-09-01 | 2017-09-01 | Broadband low section horizontally polarized omnidirectional antenna |
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| CN107732437A true CN107732437A (en) | 2018-02-23 |
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| CN201710779425.0A Pending CN107732437A (en) | 2017-09-01 | 2017-09-01 | Broadband low section horizontally polarized omnidirectional antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148832A (en) * | 2019-05-06 | 2019-08-20 | 南京邮电大学 | A kind of implantable antenna system |
| CN111224226A (en) * | 2020-01-08 | 2020-06-02 | 中国船舶重工集团公司第七二四研究所 | Broadband miniaturization low-profile horizontal polarization omnidirectional antenna |
| CN111262027A (en) * | 2020-02-10 | 2020-06-09 | 南京邮电大学 | Miniaturized broadband quadrature feed network |
| CN112615150A (en) * | 2020-12-09 | 2021-04-06 | 上海中兴易联通讯股份有限公司 | Omnidirectional radiation unit with horizontal polarization |
| CN113410642A (en) * | 2021-06-09 | 2021-09-17 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | One-to-four power division feed network of broadband antenna |
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Cited By (8)
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| CN111262027B (en) * | 2020-02-10 | 2021-02-09 | 南京邮电大学 | Miniaturized broadband quadrature feed network |
| CN112615150A (en) * | 2020-12-09 | 2021-04-06 | 上海中兴易联通讯股份有限公司 | Omnidirectional radiation unit with horizontal polarization |
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| CN113410642A (en) * | 2021-06-09 | 2021-09-17 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | One-to-four power division feed network of broadband antenna |
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