CN203983477U - A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring - Google Patents
A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring Download PDFInfo
- Publication number
- CN203983477U CN203983477U CN201420382174.4U CN201420382174U CN203983477U CN 203983477 U CN203983477 U CN 203983477U CN 201420382174 U CN201420382174 U CN 201420382174U CN 203983477 U CN203983477 U CN 203983477U
- Authority
- CN
- China
- Prior art keywords
- ring
- straight
- broadband
- gap
- flanked
- 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 straight-flanked ring, comprise aerial radiation part, flexible media plate, broadband feeding network, feed substrate and metallic reflection post, aerial radiation partly comprises four broadband straight-flanked rings, each straight-flanked ring is comprised of a primary radiation ring and a parasitic ring, all has gap on ring.Flexible media plate bends to hollow cylindrical, four broadband straight-flanked rings are the even annular arrangement of decile on flexible media plate, metallic reflection post is positioned on hollow medium cylinder axis, broadband feeding network is printed on the positive and negative of feed substrate, it is placed horizontally at medium hollow cylinder center, realizes four broadband straight-flanked ring constant amplitude homophase feeds.The utlity model has that left-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 wireless communication field, is specifically related to a kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring.
Background technology
In antenna system, polarization incoming wave can be received by circular polarized antenna arbitrarily, and the circularly polarised wave of circular polarized antenna radiation also can be received by any poliarizing antenna, therefore, the signal strength signal intensity that circular polarized antenna receives is not affected by transmitting antenna and reception antenna relative orientation.And because the polarised direction of circular polarization reflected wave is contrary with incident wave, so adopt circular polarized antenna can reduce multipath signal under multi-path environment, disturb, thereby it is widely used in the systems such as satellite communication, space exploration field, land mobile communication, radio and television and millimetre-wave attenuator.
In spacecraft (as aircraft, rocket, guided missile etc.), remote sensing remote measurement and wireless communication system, extensively need circular polarization omnidirectional antenna to communicate with maintenance and the target of different azimuth, but be difficult for realizing the classic problem that broadband is circular polarized antenna, hindered the extensive use of circular polarization omnidirectional antenna.
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 straight-flanked ring of a kind of wide bandwidth, horizontal plane omnidirectional radiation.
The utility model adopts following technical scheme:
A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring, comprise aerial radiation part, flexible media plate, feed substrate, broadband feeding network, described broadband feeding network is etched in the positive and negative two sides of feed substrate, also comprise metallic reflection post, described flexible media plate bends to hollow cylinder, described metallic reflection post is positioned on the axis of hollow cylinder, described aerial radiation partly comprises four broadband straight-flanked rings that are the even annular arrangement of decile around hollow cylinder outer surface, and described feed substrate is placed horizontally at the center of hollow cylinder.
Described hollow cylinder diameter is 0.35 λ
0～0.4 λ
0, be highly 1.57 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
Described broadband straight-flanked ring consists of a primary radiation ring and a parasitic ring, and described primary radiation ring and parasitic ring are straight-flanked ring, and the ring width of described primary radiation ring and parasitic ring is respectively 0.04 λ
0with 0.02 λ
0, two ring standoff distances are 0.01 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
Described primary radiation ring comprises on primary radiation ring part under part and primary radiation ring, and both are symmetrical up and down for horizontal axis, leave gap be connected with broadband feeding network by solder joint in the centre position of described horizontal axis; Described parasitic ring comprises the upper part of parasitic ring and the lower part of parasitic ring, and the upper part of described parasitic ring is nested on primary radiation ring in part, and the lower part of described parasitic ring is nested under primary radiation ring in part.
The left side that on described primary radiation ring, the right side of part has under the first gap, primary radiation ring a part has the second gap, and the width in described the first gap and the second gap is 0.02 λ
0, the right side of the upper part of described parasitic ring has the 3rd gap, and the left side of the lower part of parasitic ring has Fpir Crevices gap, and described the 3rd gap and the 4th gap width are 0.01 λ
0.
Described broadband feeding network consists of four wideband baluns and impedance matching network, described each wideband balun consists of the gap at feed substrate reverse side and positive L-type microstrip line, the terminal open circuit of described L-type microstrip line, the other end is connected with impedance matching circuit one end, the other end of described impedance matching circuit is connected to the central authorities of hollow cylinder, receives on feed 50 Ω coaxial lines used.
Described feed substrate back is also printed with cross conductor patch, on described cross paster etching gap.
The diameter of described metallic reflection post is 0.1 λ
0, be highly 1.5 λ
0-1.6 λ
0, thickness is 0.007 λ
0, it is highly 0.07 λ that metallic reflection post disconnects at middle part
0placement broadband, gap feeding network, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
When the S-shaped shape of the gap on straight-flanked ring and straight-flanked ring detours, realize left-hand circular polarization omnidirectional antenna; When the longitudinal central axis line symmetrical upset of straight-flanked ring for ring, now, the gap on straight-flanked ring and straight-flanked ring are anti-S shape and detour, and realize right-handed circular polarization omnidirectional antenna.
The beneficial effects of the utility model:
(1) the utility model adopts directed circular polarization straight-flanked ring antenna to have broadband performance, has realized broadband circle polarizedly, and four directed circular polarization straight-flanked ring antenna sets are surrounded around hollow cylinder ring-type and evenly placed the omni-directional that has guaranteed antenna;
(2) the polarization rotation direction of circular polarization omnidirectional antenna determines by encircling upper gap position, when straight-flanked ring and gap are combined into S shape, forms left-hand circular polarization omnidirectional antenna, as its left and right upset, is combined into
shape, forms right-handed circular polarization omnidirectional antenna, and conversion regime is flexible;
(3) each straight-flanked ring comprises a primary radiation ring and a parasitic ring, can be by adjusting primary radiation ring and parasitic ring size and relative position, utilize the beamwidth of antenna that has been coupled broadening between two rings, realize broadband circle polarized characteristic, parasitic ring all has impact to antenna circular polarization performance and impedance behavior;
(4) metallic reflection post only exerts an influence to antenna circular polarization performance, affects hardly its return loss performance;
(5) 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 broadband straight-flanked ring constant amplitude homophase feeds, realized wideband impedance match, the return loss bandwidth of 10dB can reach 45% (1.58-2.5GHz), 3dB axial ratio bandwidth is 41% (1.65-2.5GHz), in 1.7-2.4GHz frequency range, horizontal radiation pattern deviation in roundness is less than 1.5dB.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring of the utility model;
Fig. 2 is the structural representation of broadband straight-flanked ring in Fig. 1;
Fig. 3 is the structural representation of broadband feeding network in Fig. 1;
Fig. 4 (a), Fig. 4 (b) are respectively that in the utility model embodiment, the simulated measurement result in return loss and axial ratio contrasts.
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 and Figure 2, a kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring, comprise aerial radiation part, flexible media plate 2, feed substrate 4, broadband feeding network 3, metallic reflection post 5, described broadband feeding network 3 is etched in the positive and negative two sides of feed substrate 4, realization is to four broadband straight-flanked ring constant amplitude homophase feeds, described flexible media plate 2 bends to hollow cylinder, and described hollow cylinder diameter is 0.35 λ
0～0.4 λ
0, be highly 1.57 λ
0, described feed substrate 4 is placed horizontally at the center of hollow cylinder, and the gap disconnecting through metallic reflection post 5 middle parts, and described chinky altitude is 0.07 λ
0, described metallic reflection post 5 is positioned on the axis of hollow cylinder, and its diameter is 0.1 λ
0, be highly 1.5 λ
0-1.6 λ
0, thickness is 0.007 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
Described aerial radiation partly comprises four broadband straight-flanked ring 1A-1D that are the even annular arrangement of decile around circumferential outer surface, each broadband straight-flanked ring consists of a primary radiation ring 6 and a parasitic ring 7, described primary radiation ring 6 and parasitic ring 7 are straight-flanked ring, and the ring width of described primary radiation ring 6 and parasitic ring 7 is respectively 0.04 λ
0with 0.02 λ
0, two ring standoff distances are 0.01 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
The length h of primary radiation ring in the present embodiment
1for 115mm, width w
135mm, ring width k
16mm, the length h of parasitic ring
2for 45.5mm, width w
220mm, ring width k
23mm, two ring standoff distance k
31.5mm.
Described primary radiation ring comprises on primary radiation ring part under part and primary radiation ring, both are symmetrical up and down for horizontal axis, in the centre position of described horizontal axis, leaving gap is connected with broadband feeding network by solder joint, describedly have four solder joint 8A-8D and be connected with broadband feeding network respectively, in the present embodiment, this gap width is 1.6mm, solder joint preferred length w
f2.7mm; Described parasitic ring comprises the upper part of parasitic ring and the lower part of parasitic ring, and the upper part of described parasitic ring is nested on primary radiation ring in part, and the lower part of described parasitic ring is nested under primary radiation ring in part.
The left side that on described primary radiation ring, the right side of part has under the first gap, primary radiation ring a part has the second gap, and the width in described the first gap and the second gap is 0.02 λ
0, preferred g
1for 3mm, the right side of the upper part of described parasitic ring has the 3rd gap, and the left side of the lower part of parasitic ring has Fpir Crevices gap, and described the 3rd gap and the 4th gap width are 0.01 λ
0, preferred g
2for 1.2mm.The gap orientation distance of two rings is respectively s
1for 9.2mm and s
2for 10.7mm.
In the present embodiment, flexible media plate is that thickness is 0.05mm high frequency plate Panasonic R-F775 sheet material, relative dielectric constant 3.2, and loss angle tangent is 0.0015, the diameter that bends to hollow cylinder is preferably 0.38 λ
0, be highly 1.57 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
Described broadband feeding network consists of four wideband baluns and impedance matching network, by four gap 10A～10D and four positive L-type microstrip line 11A～11D at feed substrate back, formed, the terminal open circuit of L-type microstrip line, the other end is connected with impedance matching circuit 12 one end, the other end of impedance matching circuit is connected on the centre feed point 9 of hollow cylinder, receive on feed 50 Ω coaxial lines used, coaxial line adopts flexible coaxial line Johnson/Emerson RG-178, diameter is 2.5mm, and characteristic impedance is 50 Ω.
Substrate back is also printed with cross conductor patch 13, on cross paster etching gap, paster width w
gbe 14mm, the weld spacing of described broadband straight-flanked ring and broadband feeding network is from the distance h of cross paster
f1.5mm preferably.
As shown in Figure 3, broadband feeding network can be realized four broadband straight-flanked ring oscillator constant amplitude homophase feeds, and wherein preferred parameter is described as follows: l
sthat gap length is 16.8mm, w
sthat gap width is 1.6mm, l
1the length that is impedance matching circuit first paragraph is 4.75mm, w
1the width that is impedance matching circuit first paragraph is 0.7mm, l
2the length that is impedance matching circuit second segment part is 4.75mm, l
3that the 3rd section of partial-length of impedance matching circuit is 20.5mm, l
4that the 3rd section of partial-length of impedance matching circuit is 20.5mm, w
2the width that is impedance matching circuit second and third and four sections is 0.5mm, l
5that microstrip line length is 3.75mm, l
6that microstrip line bending part length is 14.25mm, w
3that micro belt line width is 1.6mm.
When the S-shaped shape of the gap on straight-flanked ring and straight-flanked ring detours, it is left-hand circular polarization omnidirectional antenna; When the longitudinal central axis line symmetrical upset of straight-flanked ring for ring, now, when gap and straight-flanked ring are combined into anti-S shape and detour ring on, can realize right-handed circular polarization omnidirectional antenna, conversion method simply, flexible.
Utilize this utility model also can carry out antenna array, form multiple unit circular polarization omni-directional antenna arrays, improve antenna gain, thereby meet the demand of antenna of mobile communication base station high-gain.
As shown in Fig. 4 (a), Fig. 4 (b), the antenna of making according to the present embodiment parameters size can reach 45% (1.58-2.5GHz) in the return loss bandwidth of 10dB, 3dB axial ratio bandwidth is 41% (1.65-2.5GHz), in 1.7-2.4GHz frequency range, horizontal radiation pattern deviation in roundness is less than 1.5dB.
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 (9)
1. the broadband circle polarized omnidirectional antenna based on straight-flanked ring, comprise aerial radiation part, flexible media plate, feed substrate, broadband feeding network, described broadband feeding network is etched in the positive and negative two sides of feed substrate, it is characterized in that, also comprise metallic reflection post, described flexible media plate bends to hollow cylinder, described metallic reflection post is positioned on the axis of hollow cylinder, described aerial radiation partly comprises four broadband straight-flanked rings that are the even annular arrangement of decile around hollow cylinder outer surface, and described feed substrate is placed horizontally at the center of hollow cylinder.
2. antenna according to claim 1, is characterized in that, described hollow cylinder diameter is 0.35 λ
0～0.4 λ
0, be highly 1.57 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
3. antenna according to claim 1, is characterized in that, described broadband straight-flanked ring consists of a primary radiation ring and a parasitic ring, and described primary radiation ring and parasitic ring are straight-flanked ring, and the ring width of described primary radiation ring and parasitic ring is respectively 0.04 λ
0with 0.02 λ
0, two ring standoff distances are 0.01 λ
0, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
4. antenna according to claim 3, it is characterized in that, described primary radiation ring comprises on primary radiation ring part under part and primary radiation ring, and both are symmetrical up and down for horizontal axis, leave gap be connected with broadband feeding network by solder joint in the centre position of described horizontal axis; Described parasitic ring comprises the upper part of parasitic ring and the lower part of parasitic ring, and the upper part of described parasitic ring is nested on primary radiation ring in part, and the lower part of described parasitic ring is nested under primary radiation ring in part.
5. antenna according to claim 4, is characterized in that, the left side that on described primary radiation ring, the right side of part has under the first gap, primary radiation ring a part has the second gap, and the width in described the first gap and the second gap is 0.02 λ
0, the right side of the upper part of described parasitic ring has the 3rd gap, and the left side of the lower part of parasitic ring has Fpir Crevices gap, and described the 3rd gap and the 4th gap width are 0.01 λ
0.
6. antenna according to claim 1, it is characterized in that, described broadband feeding network consists of four wideband baluns and impedance matching network, described each wideband balun consists of the gap at feed substrate reverse side and positive L-type microstrip line, the terminal open circuit of described L-type microstrip line, the other end is connected with impedance matching circuit one end, and the other end of described impedance matching circuit is connected to the central authorities of hollow cylinder, receives on feed 50 Ω coaxial lines used.
7. antenna according to claim 1, is characterized in that, described feed substrate back is also printed with cross conductor patch, on described cross paster etching gap.
8. antenna according to claim 1, is characterized in that, the diameter of described metallic reflection post is 0.1 λ
0, be highly 1.5 λ
0-1.6 λ
0, thickness is 0.007 λ
0, it is highly 0.07 λ that metallic reflection post disconnects at middle part
0placement broadband, gap feeding network, λ wherein
0centered by frequency 2GHz the wavelength of corresponding free space.
9. according to the antenna described in claim 1-8 any one, it is characterized in that, when the S-shaped shape of the gap on straight-flanked ring and straight-flanked ring detours, is left-hand circular polarization omnidirectional antenna; When the longitudinal central axis line symmetrical upset of straight-flanked ring for ring, now, the gap on straight-flanked ring and straight-flanked ring are anti-S shape and detour, and realize right-handed circular polarization omnidirectional antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420382174.4U CN203983477U (en) | 2014-07-10 | 2014-07-10 | A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420382174.4U CN203983477U (en) | 2014-07-10 | 2014-07-10 | A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983477U true CN203983477U (en) | 2014-12-03 |
Family
ID=51980899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420382174.4U Expired - Fee Related CN203983477U (en) | 2014-07-10 | 2014-07-10 | A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203983477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134854A (en) * | 2014-07-10 | 2014-11-05 | 华南理工大学 | Broadband circularly-polarized omnidirectional antenna based on rectangular rings |
-
2014
- 2014-07-10 CN CN201420382174.4U patent/CN203983477U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134854A (en) * | 2014-07-10 | 2014-11-05 | 华南理工大学 | Broadband circularly-polarized omnidirectional antenna based on rectangular rings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104134854A (en) | Broadband circularly-polarized omnidirectional antenna based on rectangular rings | |
| CN102800927B (en) | By the microminiaturized ultra-wide band multifunctional antenna of multimode row ripple (TW) | |
| CN103187616B (en) | Circular polarized antenna | |
| CN104092007A (en) | Broadband circular polarization omni antenna based on tilting oscillators | |
| CN203690485U (en) | Broadband horizontal polarization omnidirectional antenna | |
| CN109687116B (en) | C-band miniaturized broadband wide-beam circularly polarized microstrip antenna | |
| KR20150089509A (en) | Dual-polarized dipole antenna | |
| US9680211B2 (en) | Ultra-wideband antenna | |
| CN103700929A (en) | Broadband horizontal polarization omnidirectional antenna | |
| CN103915679A (en) | Quadrifilar helix antenna with resonant top end | |
| CN105206936A (en) | Double-frequency nested circular polarization navigation antenna | |
| CN107425268A (en) | High-gain dual mode wideband circular polarized antenna | |
| CN103943946A (en) | Broadband omni-directional antenna with 45-degree oblique polarization | |
| CN107611598A (en) | A kind of ultra wide band double-circle polarization log-periodic antenna of broad beam | |
| CN113169456B (en) | Broadband GNSS antenna system | |
| CN207475549U (en) | omni-directional array antenna | |
| CN102769183B (en) | Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system | |
| CN109904584B (en) | Dual-polarized microstrip patch antenna unit and antenna array | |
| CN104993245A (en) | S-waveband communication-in-motion double-frequency circularly polarized micro-strip antenna and array thereof | |
| CN203983456U (en) | A kind of broadband circle polarized omnidirectional antenna based on inclination oscillator | |
| WO2019100376A1 (en) | Omnidirectional array antenna and beamforming method therefor | |
| CN111146578B (en) | Planar annular leaky-wave antenna for generating cone-shaped wave beam | |
| CN106816717B (en) | Conical beam circularly polarized antenna | |
| CN103311662B (en) | Multi-frequency round Beidou patch antenna with recursive coupled cavities | |
| CN203983477U (en) | A kind of broadband circle polarized omnidirectional antenna based on straight-flanked ring |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180710 |