CN203983456U - A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator - Google Patents
A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator Download PDFInfo
- Publication number
- CN203983456U CN203983456U CN201420353247.7U CN201420353247U CN203983456U CN 203983456 U CN203983456 U CN 203983456U CN 201420353247 U CN201420353247 U CN 201420353247U CN 203983456 U CN203983456 U CN 203983456U
- Authority
- CN
- China
- Prior art keywords
- oscillator
- inclination
- broadband
- omnidirectional antenna
- antenna based
- 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.)
- Expired - Fee Related
Links
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator, comprise aerial radiation part, flexible media plate, broadband feeding network and feed substrate, aerial radiation partly comprises four inclination oscillators, each inclination oscillator is comprised of a primary radiation oscillator and a parasitic oscillator, primary radiation oscillator is all different from length and the angle of inclination of parasitic oscillator, flexible media plate bends to hollow cylindrical, four inclination oscillators are the even annular arrangement of decile on flexible media plate, broadband feeding network is just being printed on feed substrate, on reverse side, it is placed horizontally at medium hollow cylinder center, realization is to four inclination oscillator constant amplitude homophase feeds.The utlity model has that left and right hand circular polarization is realized flexibly, omni-directional is good and the advantage in broadband, is applicable to field, mobile communication base station.
Description
Technical field
The utility model relates to a kind of wireless communication field, is specifically related to a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator.
Background technology
Along with social development, performance requirement to antenna is also more and more higher, in modern wireless application system, simple linear polarized antenna has been difficult to meet people's demand, circular polarized antenna is more and more subject to paying close attention to more widely, and omnidirectional circular-polarized antenna is especially because its special performance is widely used at aspects such as communication, remote sensing remote measurement, radar, electronic reconnaissance and electronic jamming.
In antenna theory, electric dipole radiation omnidirectional vertically polarized wave perpendicular to ground, the uniform current ring radiation omnidirectional horizontal polarized wave that is parallel to ground, vertical, the horizontal polarization electric field of both radiation produce 90 ° of phase differences naturally, when its amplitude equates, in far field, stack can produce Circular polarized omni-directional ripple to pairwise orthogonal polarized wave, thereby realizes Circular polarized omni-directional radiation.When using inclination oscillator battle array to realize omnidirectional circular-polarized antenna, each inclination oscillator can be decomposed into a horizontal component and a vertical component, when a plurality of inclination oscillators are during around circumferential arrangement, its horizontal component can be equivalent to a horizontal uniform current ring, vertical component is equivalent to a vertical dipole, and both produce Circular polarized omni-directional ripple in far field.The omnidirectional antenna that method realizes thus can be realized wider circular polarization bandwidth, but the more difficult realization of impedance matching.
Utility model content
The shortcoming and deficiency that in order to overcome prior art, exist, the utility model provides the broadband circle polarized omnidirectional antenna based on inclination oscillator of a kind of low section, wide bandwidth and horizontal plane omnidirectional radiation.
The utility model adopts following technical scheme:
A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator, comprise aerial radiation part, flexible media plate, broadband feeding network and feed substrate, described broadband feeding network is printed on the tow sides of feed substrate, described flexible media plate bends to hollow cylinder, described feed substrate is placed horizontally at the center of hollow cylinder, described aerial radiation partly comprises four inclination oscillators, and described four inclination oscillators are the even annular arrangement of decile at hollow cylinder outer surface.
Described inclination oscillator consists of primary radiation oscillator and parasitic oscillator, primary radiation oscillator and horizontal plane positive direction angle are 0< α <180 °, and described parasitic oscillator and horizontal plane positive direction angle are 0< β <180 °.
The diameter of described hollow cylinder is 0.17 λ
0～0.2 λ
0, be highly 0.4 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
The width of described primary radiation oscillator and parasitic oscillator is respectively 0.05 λ
0with 0.02 λ
0, length is respectively 0.47 λ
0with 0.31 λ
0.
Described primary radiation oscillator and parasitic oscillator be without direct connection, wherein, and distance d in primary radiation oscillator peak and parasitic oscillator peak vertical direction
10.1 λ
0, distance d in horizontal direction
20.05 λ
0.
Described primary radiation oscillator is in disconnection crack, the centre position of length direction, and this crack is connected with broadband feeding network by solder joint.
Broadband feeding network comprises four wideband baluns and impedance matching circuit, each wideband balun consists of the gap at feed substrate back and the positive L-type microstrip line with 45 ° of chamferings, the terminal open circuit of L-type microstrip line, the other end is connected with impedance matching circuit one end, and the other end of impedance matching circuit is connected with the centre feed point of hollow cylinder.
Described feed substrate back is also printed with the cross conductor patch with 45 ° of chamferings.
Described impedance matching networking is decussation in feed substrate center and connects.
When the angle of inclination oscillator and horizontal plane positive direction is <90 ° of 0< α, form right-handed circular polarization omnidirectional antenna, when the angle of inclination oscillator and horizontal plane positive direction is <180 ° of 90 ° of < α, form left-hand circular polarization omnidirectional antenna.
The beneficial effects of the utility model:
(1) four inclination oscillators that the utility model adopts have been realized Circular polarized omni-directional radiation around the even annular arrangement of hollow cylinder decile, utilize parasitic oscillator and broadband feeding network, have realized broadband circle polarized;
(2) the polarization rotation direction of circular polarization omnidirectional antenna is determined by the tilt angle alpha of tilt oscillator and horizontal plane positive direction, when the angle of inclination oscillator and horizontal plane positive direction is <90 ° of 0< α, form right-handed circular polarization omnidirectional antenna, and the angle of inclination oscillator and horizontal plane positive direction is while being <180 ° of 90 ° of < α, form left-hand circular polarization omnidirectional antenna, conversion regime is flexible;
(3) each inclination oscillator comprises a primary radiation oscillator and a parasitic oscillator, they are all around the even annular arrangement of hollow cylinder decile, primary radiation oscillator angle of inclination and cylindrical radius are to realize the key of Circular polarized omni-directional radiation, utilize the beamwidth of antenna that has been coupled broadening between parasitic oscillator and primary radiation oscillator, thereby realize broadband circle polarized characteristic;
(4) broadband feeding network only affects antenna impedance performance, on antenna circular polarization and omnidirectional's characteristic almost without impact; Broadband feeding network is to four inclination oscillator constant amplitude homophase feeds, realized wideband impedance match, the return loss bandwidth of the 10dB of this circular polarization omnidirectional antenna can reach 61% (1.35-2.54GHz), 3dB axial ratio bandwidth is 44% (1.69-2.64GHz), in 1.7-2.4GHz frequency range, horizontal radiation pattern deviation in roundness is less than 1.5dB, and be less than-15dB of cross polarization, easily realizes double-circle polarization function.
Accompanying drawing explanation
Fig. 1 is a kind of broadband circle polarized omnidirectional antenna structural representation based on inclination oscillator of the utility model;
Fig. 2 is the inclination oscillator structure schematic diagram in Fig. 1;
Fig. 3 is feeding network structural representation in broadband in Fig. 1;
Fig. 4 (a) is simulation result and the test result comparison diagram of the utility model embodiment return loss, and Fig. 4 (b) is simulation result and the test result comparison diagram of the utility model embodiment axial ratio.
Shown in figure:
1-aerial radiation part; 2-flexible media plate; 3-broadband feeding network; 4-feed substrate; 5-primary radiation oscillator; The parasitic oscillator of 6-; 7-solder joint; 8-centre feed point; 9-gap; 10-L type microstrip line; 11-impedance matching circuit; The cross conductor patch of 12-.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator, comprise aerial radiation part 1, flexible media plate 2, broadband feeding network 3 and feed substrate 4, described broadband feeding network 3 is printed on the positive and negative two sides of feed substrate 4, described flexible media plate 2 bends to hollow cylinder, and the diameter of described hollow cylinder is 0.17 λ
0～0.2 λ
0, be highly 0.4 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space, described feed substrate 4 is placed horizontally at the center of hollow cylinder, and the diameter of feed substrate and hollow cylinder equal diameters, described aerial radiation part 1 comprises four inclination oscillators, and described four inclination oscillators are the even annular arrangement of decile at hollow cylinder outer surface.
As shown in Figure 2, each inclination oscillator consists of a primary radiation oscillator 5 and a parasitic oscillator 6, the length k of primary radiation oscillator in the present embodiment
1for 73mm, width h
1be 7.5mm, α is 35 ° with horizontal plane positive direction angle, the length k of parasitic oscillator
2for 47mm, width h
2be 3mm, β is 40 ° with horizontal plane positive direction angle.Described primary radiation oscillator and parasitic oscillator be without direct connection, wherein, and distance d in primary radiation oscillator peak and parasitic oscillator peak vertical direction
114.8mm, distance d in horizontal direction
27.3mm.Primary radiation oscillator is in disconnection crack, the centre position of length direction, and described fracture width is 1.2mm, and this crack is connected with broadband feeding network 3 by solder joint 7.
The flexible media plate thickness of the present embodiment is 0.05mm high frequency plate Panasonic R-F775 sheet material, relative dielectric constant 3.2, and loss angle tangent is 0.0015, diameter is 0.185 λ
0, be highly 0.4 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
Feed substrate 4 is that thickness is 0.8mm dielectric-slab Taconic TLY-5 sheet material, relative dielectric constant 2.2, and loss angle tangent is 0.0009, diameter is 27.95mm.
Coaxial line adopts flexible coaxial line Johnson/Emerson RG-178, and diameter is 2.5mm, and characteristic impedance is 50 Ω.
As shown in Figure 3, described feed substrate is placed horizontally at the center of the hollow cylinder of flexible media plate bending, broadband feeding network 3 is just being printed on substrate, on anti-two sides, broadband feeding network comprises four wideband baluns and impedance matching circuit 11, wideband balun consists of the gap 9 at feed substrate back and the positive L-type microstrip line 10 with 45 degree chamferings, the terminal open circuit of L-type microstrip line, the other end is connected with impedance matching circuit 11, the other end of impedance matching circuit is connected on the centre feed point 8 of cylinder, receive on feed 50 Ω coaxial lines used, feed substrate back is also printed with the cross conductor patch 12 with chamfering, the chamfer angle of conductor patch is 45 °, the first paragraph partial-length l of chamfering
8for 2mm, the second portion length l of chamfering
9also be 2mm, on paster etching gap, paster width w
g12mm.
Broadband feeding network can be realized four inclination oscillator constant amplitude homophase feeds, and wherein parameter declaration is as follows: l
sthat gap length is 19mm, w
sthat gap width is 1.2mm, l
1the length that is impedance matching network first paragraph is 4mm, l
2the length that is impedance matching network second segment part is 23.5mm, l
3that the 3rd section of partial-length of impedance matching network is 3mm, w
1the width that is impedance matching network first and second and three sections is 0.4mm, l
4be that microstrip line length with chamfering is 4mm, chamfer angle is also 45 °, l
5that microstrip line chamfering first paragraph partial-length is 1.5mm, l
6that microstrip line chamfering second segment partial-length is 1.5mm, l
7that bending part length with the microstrip line of chamfering is 15.5mm, w
2that band chamfering micro belt line width is 1.5mm.
The solder joint length w that inclination oscillator is connected with broadband feeding network
f1.5mm, the distance length h that solder joint 7 is connected with cross conductor patch 12
f2.5mm.
Impedance matching circuit is decussation in feed substrate center and connects.When the angle of inclination oscillator and horizontal plane positive direction is <90 ° of 0< α, form right-handed circular polarization omnidirectional antenna, and the angle of inclination oscillator and horizontal plane positive direction is while being <180 ° of 90 ° of < α, form left-hand circular polarization omnidirectional antenna, conversion method is simple, flexible.
As Fig. 4 (a), the antenna of the present embodiment shown in Fig. 4 (b) passes through broadband feeding network to four inclination oscillator constant amplitude homophase feeds, realized wideband impedance match, the return loss bandwidth of the 10dB of this circular polarization omnidirectional antenna can reach 61% (1.35-2.54GHz), 3dB axial ratio bandwidth is 44% (1.69-2.64GHz), and in 1.7-2.4GHz frequency range, horizontal radiation pattern deviation in roundness is less than 1.5dB, be less than-15dB of cross polarization, easily realizes double-circle polarization function.
The utility model provides a kind of and utilizes a plurality of inclination oscillators to carry out the mode of permutation and combination, by the inclination oscillator of same Unit four is conformal in hollow cylinder surface, stack has produced Circular polarized omni-directional ripple principle in far field to make each antenna element, by the design of parasitic element and broadband feeding network, finally realize broadband circle polarized omnidirectional radiation again.
Utilize this utility model also can carry out antenna array, form multiple unit horizontally polarized omnidirectional antenna array, improve antenna gain, thereby meet the demand of antenna of mobile communication base station high-gain.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (10)
1. the broadband circle polarized omnidirectional antenna based on inclination oscillator, comprise aerial radiation part, flexible media plate, broadband feeding network and feed substrate, described broadband feeding network is printed on the positive and negative two sides of feed substrate, it is characterized in that, described flexible media plate bends to hollow cylinder, described feed substrate is placed horizontally at the center of hollow cylinder, and described aerial radiation partly comprises four inclination oscillators, and described four inclination oscillators are the even annular arrangement of decile at hollow cylinder outer surface.
2. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 1, it is characterized in that, described inclination oscillator consists of primary radiation oscillator and parasitic oscillator, primary radiation oscillator and horizontal plane positive direction angle are 0< α <180 °, and described parasitic oscillator and horizontal plane positive direction angle are 0< β <180 °.
3. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 1, is characterized in that, the diameter of described hollow cylinder is 0.17 λ
0～0.2 λ
0, be highly 0.4 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
4. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 2, is characterized in that, the width of described primary radiation oscillator and parasitic oscillator is respectively 0.05 λ
0with 0.02 λ
0, length is respectively 0.47 λ
0with 0.31 λ
0.
5. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 4, is characterized in that, described primary radiation oscillator and parasitic oscillator be without direct connection, wherein, and distance d in primary radiation oscillator peak and parasitic oscillator peak vertical direction
10.1 λ
0, distance d in horizontal direction
20.05 λ
0.
6. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 5, is characterized in that, described primary radiation oscillator is in disconnection crack, the centre position of length direction, and this crack is connected with broadband feeding network by solder joint.
7. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 1, it is characterized in that, described broadband feeding network comprises four wideband baluns and impedance matching circuit, each wideband balun consists of gap and the positive L-type microstrip line with 45 ° of chamferings of feed substrate back, the terminal open circuit of L-type microstrip line, the other end is connected with impedance matching circuit one end, and the other end of impedance matching circuit is connected with the centre feed point of hollow cylinder.
8. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 1, is characterized in that, described feed substrate back is also printed with the cross conductor patch with 45 ° of chamferings.
9. a kind of broadband circle polarized omnidirectional antenna based on inclination oscillator according to claim 7, is characterized in that, described impedance matching networking is decussation in feed substrate center and connects.
10. according to the broadband circle polarized omnidirectional antenna based on inclination oscillator described in claim 1-9 any one, it is characterized in that, when the angle of inclination oscillator and horizontal plane positive direction is <90 ° of 0< α, form right-handed circular polarization omnidirectional antenna, when the angle of inclination oscillator and horizontal plane positive direction is <180 ° of 90 ° of < α, form left-hand circular polarization omnidirectional antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420353247.7U CN203983456U (en) | 2014-06-27 | 2014-06-27 | A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420353247.7U CN203983456U (en) | 2014-06-27 | 2014-06-27 | A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983456U true CN203983456U (en) | 2014-12-03 |
Family
ID=51980878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420353247.7U Expired - Fee Related CN203983456U (en) | 2014-06-27 | 2014-06-27 | A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203983456U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092007A (en) * | 2014-06-27 | 2014-10-08 | 华南理工大学 | Broadband circular polarization omni antenna based on tilting oscillators |
| CN110637392A (en) * | 2017-02-28 | 2019-12-31 | 株式会社Kmw | Dual-polarized omnidirectional antenna and base station comprising same |
| CN111029737A (en) * | 2019-11-22 | 2020-04-17 | 深圳市鼎耀科技有限公司 | Compact circularly polarized omnidirectional antenna |
-
2014
- 2014-06-27 CN CN201420353247.7U patent/CN203983456U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092007A (en) * | 2014-06-27 | 2014-10-08 | 华南理工大学 | Broadband circular polarization omni antenna based on tilting oscillators |
| CN110637392A (en) * | 2017-02-28 | 2019-12-31 | 株式会社Kmw | Dual-polarized omnidirectional antenna and base station comprising same |
| US11114772B2 (en) | 2017-02-28 | 2021-09-07 | Kmw Inc. | Dual polarized omni-directional antenna and base station including same |
| CN110637392B (en) * | 2017-02-28 | 2022-11-15 | 株式会社Kmw | Dual-polarized omnidirectional antenna and base station comprising same |
| CN111029737A (en) * | 2019-11-22 | 2020-04-17 | 深圳市鼎耀科技有限公司 | Compact circularly polarized omnidirectional antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104092007A (en) | Broadband circular polarization omni antenna based on tilting oscillators | |
| CN203690485U (en) | Broadband horizontal polarization omnidirectional antenna | |
| CN102694237B (en) | A kind of dual polarized antenna unit and antenna for base station | |
| CN103700929A (en) | Broadband horizontal polarization omnidirectional antenna | |
| CN104269607A (en) | Broadband dipole antenna based on artificial magnetic conductor structure | |
| CN106299618A (en) | A kind of substrate integration wave-guide plane end-fire circular polarized antenna | |
| CN106549233A (en) | The Antonio Vivaldi circular array antenna of the horizontally polarized omnidirectional connecting-type of ultra broadband | |
| CN104134854A (en) | Broadband circularly-polarized omnidirectional antenna based on rectangular rings | |
| CN104505578A (en) | Omnidirectional dual circularly polarized antenna | |
| CN104901004A (en) | High-gain end-fire millimeter wave antenna | |
| CN109066051B (en) | Ultra-wideband high-gain dual-polarized full-wave oscillator antenna | |
| CN105048079A (en) | Omnidirectional circular polarization plane antenna | |
| CN103943946A (en) | Broadband omni-directional antenna with 45-degree oblique polarization | |
| CN203983456U (en) | A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator | |
| CN107611601B (en) | Miniaturized high-gain dual-polarized omnidirectional antenna | |
| CN108172989A (en) | A kind of Novel Bipolar omnidirectional microstrip antenna | |
| CN207677081U (en) | Broadband circularly polarized antenna based on annular patch | |
| CN203826541U (en) | Broadband 45-degree oblique-polarization omnidirectional antenna | |
| CN104993245A (en) | S-waveband communication-in-motion double-frequency circularly polarized micro-strip antenna and array thereof | |
| CN110444876B (en) | High-gain broadband circularly polarized antenna and wireless communication equipment | |
| CN108173008B (en) | Novel planar omnidirectional circularly polarized antenna, wireless communication base station and mobile terminal | |
| CN104916914B (en) | A kind of knife-edge broadband horizontal polarization omnidirectional antenna | |
| CN204205023U (en) | The medium substrate of RFID microstrip antenna and this antenna | |
| CN106961006A (en) | A kind of DBDM minimizes hand-held set antenna | |
| KR102120838B1 (en) | Ultra-wideband antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |