CN103457033B - compact broadband circular polarizer - Google Patents
compact broadband circular polarizer Download PDFInfo
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- CN103457033B CN103457033B CN201310379803.8A CN201310379803A CN103457033B CN 103457033 B CN103457033 B CN 103457033B CN 201310379803 A CN201310379803 A CN 201310379803A CN 103457033 B CN103457033 B CN 103457033B
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- circular polarizer
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Abstract
The invention provides a kind of Compact broadband circular polarizer, comprise: circumference transducer, mode converter, reflection back of the body chamber and feed, circumference transducer is connected to mode converter upper end by ring flange, and reflection back of the body chamber is connected with feed and the two is all connected to mode converter lower end by ring flange.Structure of the present invention is simple, volume is little, wider frequency section can be covered, make to utilize same circular polarizer to meet the mobile communication of different regions various criterion, satellite communication, short haul connection, broadband access communication and Digital TV Receiving and become possibility, and the demand of system compact can be met, have a extensive future.
Description
Technical field
The present invention relates to a kind of circular polarizer, particularly, relate to a kind of Compact broadband circular polarizer of carrying on the back chamber based on ladder dividing plate and reflection.
Background technology
Along with the development of modern communications, remote control, telemetry, and the needs to high-speed target tracking measurement under various polarization mode and weather conditions, single linear polarization is easily affected, and occurs that polarization worsens or polarization mismatch, far can not meet the requirement of modern communications.Circular polarized antenna can resist polarization well to be worsened and polarization mismatch, under the adverse weather conditions such as sexual intercourse He in electronic jamming environment, show good superiority, more sensitive and accurate to the seizure of violent shake target.The way of realization of circular polarized antenna has a variety of, and modal mode forms circular polarization guided wave by circular polarization device, and then feed antenna radiate.
The kind of circular polarizer mainly contains dividing plate circular polarizer, dielectric-slab circular polarizer, ripple circular polarizer etc.Through finding the literature search of prior art, use more a circular polarizer to be square wave guide diaphragm type circular polarizer HD-51.99SWSPS in the market, but this circular polarizer feeding classification is complicated, needs three microwave ports, volume is large, is unfavorable for system compact.In IEEE2011 international symposium, the people such as IlkyuKim and YahyaRahmat-Samii propose a circular polarizer at article " RevisitingSteppedSeptumCircularPolarizerUsingFull-WaveSi mulations ", in this, also volume is larger for circular polarizer, and need in actual applications to design complicated matching system, be unfavorable for system and installation.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of Compact broadband circular polarizer, this circular polarizer structure is simple, small volume, wider frequency section can be covered, thus make to utilize same circular polarizer to meet the mobile communication of different regions various criterion, satellite communication, short haul connection, broadband access communication and Digital TV Receiving to become possibility.
According to an aspect of the present invention, a kind of Compact broadband circular polarizer is provided, comprise: circumference transducer, mode converter, reflection back of the body chamber and feed, circumference transducer is connected to mode converter upper end by ring flange, and reflection back of the body chamber is connected with feed and the two is all connected to mode converter lower end by ring flange.
Preferably, having an area of transducer is one be transitioned into the cuboid of circular inner port by quadrangle inner port.
Preferably, mode converter comprises rectangular waveguide and stairstepping metal partion (metp), and the exponent number of stairstepping metal partion (metp) is multistage, and stairstepping metal partion (metp) is arranged on rectangular waveguide middle, and stairstepping metal partion (metp) is connected with rectangular waveguide by embedded screw.
Preferably, feed is coaxial waveguide converter.
Preferably, coaxial waveguide converter comprises N-type head, sliding weight of steelyard shape metal section and the first rectangular waveguide, and sliding weight of steelyard shape metal section is connected with N-type head thread, and N-type head is connected with the first rectangular waveguide by ring flange.
Preferably, reflection back of the body chamber comprises the second rectangular waveguide and semi-cylindrical recesses reflecting surface, and the second rectangular waveguide is connected with semi-cylindrical recesses reflecting surface.
Preferably, reflection the back of the body chamber and feed one-body molded.
Preferably, this Compact broadband circular polarizer also comprises horn antenna, and horn antenna is connected by ring flange with circumference transducer.
Preferably, horn antenna is elliptic aperture horn antenna, circular aperture horn antenna or square bore horn antenna.
Preferably, Compact broadband circular polarizer is 120mm × 50mm × 45mm at the three-dimensional dimension of C-band.
The operation principle of Compact broadband circular polarizer of the present invention is as follows: the TEM mould of N-type head is converted to TE10 mould by coaxial waveguide converter, TE10 mould carries on the back the double action in chamber through mode converter and reflection, generation amplitude is identical, phase 90 degree mutually orthogonal TE10 mould and TE01 mould, this circularly polarised wave, by circumference converter, is radiated free space finally by horn antenna.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention simplifies feeding classification by adding reflection back of the body chamber, and the feed of conventional circular polarization device needs double-fed, and the feed system of double-fed is complicated, be unfavorable for application and miniaturization are installed, the present invention adopts single feedback mode, feeding classification simple and stable, and is easy to install and miniaturization.
2, circular polarizer main body of the present invention is metal, and mechanical strength is large, and stability is high, durable in use.
3, circular polarizer main body formation stereochemical structure of the present invention is less than general circular polarizer volume, and structure is simple, can meet the demand of system compact, have a extensive future.
4, circular polarizer of the present invention can cover wider frequency section, and making to utilize same circular polarizer to meet the mobile communication of different regions various criterion, satellite communication, short haul connection, broadband access communication and Digital TV Receiving becomes possibility.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation of Compact broadband circular polarizer of the present invention;
Fig. 2, Fig. 3 are front view and the A-A cutaway view of Compact broadband circular polarizer of the present invention;
Fig. 4, Fig. 5 are left view and the B-B cutaway view of Compact broadband circular polarizer of the present invention;
Fig. 6, Fig. 7 are right view and the vertical view of Compact broadband circular polarizer of the present invention;
Fig. 8, Fig. 9 are the front view that is connected with horn antenna of Compact broadband circular polarizer of the present invention and A-A cutaway view;
Figure 10, Figure 11 are the left view that is connected with horn antenna of Compact broadband circular polarizer of the present invention and B-B cutaway view;
Figure 12, Figure 13 are the right view that is connected with horn antenna of Compact broadband circular polarizer of the present invention and vertical view;
Figure 14 is the return loss plot of the circular polarized antenna of the embodiment of the present invention;
Figure 15 is the minimum axial ratio figure of each frequency of the embodiment of the present invention;
Figure 16 is that the axial ratio-Theta of the embodiment of the present invention schemes.
In figure: 1 is circumference transducer, and 2 is mode converter, and 3 is feed, 4 is reflection back of the body chamber, 5 is ring flange, and 6 is rectangular waveguide, and 7 is horn antenna, 8 is the first rectangular waveguide, 9 is N-type head, and 10 is the second rectangular waveguide, and 11 is semi-cylindrical recesses reflecting surface, 12 is notch cuttype metal partion (metp), and 13 is sliding weight of steelyard type metal section.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Please refer to Fig. 1 to Fig. 7, a kind of Compact broadband circular polarizer, comprise: circumference transducer, mode converter, reflection back of the body chamber and feed, circumference transducer is connected to mode converter upper end by ring flange, and reflection back of the body chamber is connected with feed and the two is all connected to mode converter lower end by ring flange.
Further, having an area of transducer is one be transitioned into the cuboid of circular inner port by quadrangle inner port.Mode converter comprises rectangular waveguide and stairstepping metal partion (metp), and the exponent number of stairstepping metal partion (metp) is multistage, and stairstepping metal partion (metp) is arranged on rectangular waveguide middle, and stairstepping metal partion (metp) is connected with rectangular waveguide by embedded screw.Feed is coaxial waveguide converter, and coaxial waveguide converter comprises N-type head, sliding weight of steelyard shape metal section and the first rectangular waveguide, and sliding weight of steelyard shape metal section is connected with N-type head thread, and N-type head is connected with the first rectangular waveguide by ring flange.Reflection back of the body chamber comprises the second rectangular waveguide and semi-cylindrical recesses reflecting surface, and the second rectangular waveguide is connected with semi-cylindrical recesses reflecting surface.
Further, reflection the back of the body chamber and feed one-body molded.
Further, this Compact broadband circular polarizer also comprises horn antenna, and horn antenna is connected by ring flange with circumference transducer.Horn antenna is elliptic aperture horn antenna, circular aperture horn antenna or square bore horn antenna.
Further, this Compact broadband circular polarizer structure is simple, and volume is little, and its three-dimensional dimension at C-band is 120mm × 50mm × 45mm.
The operation principle of Compact broadband circular polarizer of the present invention is as follows: the TEM mould of N-type head is converted to TE10 mould by coaxial waveguide converter, TE10 mould carries on the back the double action in chamber through mode converter and reflection, generation amplitude is identical, phase 90 degree mutually orthogonal TE10 mould and TE01 mould, this circularly polarised wave, by circumference converter, is radiated free space finally by horn antenna.
As shown in Fig. 8 to Figure 13, it is four views that are connected with horn antenna of Compact broadband circular polarizer of the present invention and profile.The present embodiment mainly comprises five parts, is followed successively by horn antenna, circumference transducer, mode converter, feed and reflection back of the body chamber, as shown in Fig. 8 to Figure 13.Wherein, horn antenna is transitioned into oval interior bore by circular interior bore; Circumference converter is transitioned into circular inner port by quadrangle inner port, and profile is cuboid; Mode converter is made up of rectangular waveguide and stairstepping metal partion (metp); Feed produces the guided wave needed by coaxial waveguide converter, coaxial waveguide converter is made up of N-type head, sliding weight of steelyard shape metal and rectangular waveguide; Reflection back of the body chamber is made up of rectangular waveguide and semi-cylindrical recesses reflecting surface.
Below in conjunction with Fig. 8 to Figure 13, annexation of the present invention is elaborated, horn antenna is connected by ring flange with circumference transducer, circumference transducer is connected by ring flange with mode converter upper end, notch cuttype metal partion (metp) is fixed together by embedded screw and square wave guide, coaxial waveguide feed and reflection carry on the back that chamber is integrated to be processed, and are connected by ring flange with mode converter lower end.Sliding weight of steelyard shape metal in coaxial waveguide feed is connected with N-type head by embedded screw thread, and N-type head is connected with rectangular waveguide by ring flange.
Particularly, horn antenna is transitioned into oval interior bore by circular interior bore, and circular bore radius is 22mm, and the major semiaxis of elliptic aperture is 45mm, and semi-minor axis is 38mm, and horn antenna length is 35mm; Circumference converter is transitioned into circular inner port by quadrangle inner port, and quadrangle inner port area is 44mm*40mm, and circular inner port radius is 22mm; Mode converter is made up of rectangular waveguide and stairstepping metal partion (metp), and the interior bore of rectangular waveguide is 44mm*40mm, and waveguide wall thickness is 2mm, and stairstepping metal partion (metp) thickness is 4mm, has 5 rank.The height of the ladder on the first rank is 9mm, and second-order is 8mm to the ladder height on the 5th rank, and the first rank are respectively 40.386mm, 28mm, 20mm, 13mm and 7mm to the ladder width on the 5th rank.Reflection back of the body chamber mainly comprises rectangular waveguide and semi-cylindrical recesses reflecting surface two parts, and wherein the interior bore of rectangular waveguide is 20.193mm*40.3863mm, and rectangular waveguide length is 16mm, and groove reflection face diameter is 20.193mm.The sliding weight of steelyard shape metal of coaxial waveguide converter is made up of the metal round platform of impedance transformation and metal cylinder.Circular polarized antenna is by N-type head feed, and the three-dimensional dimension of stereochemical structure is 155mm × 50mm × 50mm.
The return loss plot that the emulation of the present embodiment obtains as shown in figure 14.As can be seen from the figure, in 4.2GHz-10GHz frequency range, return loss is less than-10dB.
The minimum axial ratio figure of each frequency that the emulation of this example obtains as shown in figure 15.As can be seen from the figure, in 1GHz-10GHz frequency range, minimum axial ratio is all less than 1dB.
That this example is schemed at the axial ratio-Theta of 5.1GHz, Phi=90deg as shown in figure 16.As can be seen from the figure, when Phi=90deg, the axial ratio beamwidth of 3dB is greater than 60deg.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. a Compact broadband circular polarizer, it is characterized in that, comprise: circumference transducer, mode converter, reflection back of the body chamber and feed, described circumference transducer is connected to described mode converter upper end by ring flange, and described reflection back of the body chamber is connected with feed and the two is all connected to described mode converter lower end by ring flange; Wherein, described feed is coaxial waveguide converter;
Described mode converter comprises rectangular waveguide and stairstepping metal partion (metp), and the exponent number of described stairstepping metal partion (metp) is multistage, and described stairstepping metal partion (metp) is arranged on described rectangular waveguide middle;
Described reflection back of the body chamber comprises the first rectangular waveguide and semi-cylindrical recesses reflecting surface, and described first rectangular waveguide is connected with semi-cylindrical recesses reflecting surface.
2. Compact broadband circular polarizer according to claim 1, is characterized in that, described circumference transducer is one be transitioned into the cuboid of circular inner port by quadrangle inner port.
3. Compact broadband circular polarizer according to claim 1, is characterized in that, described stairstepping metal partion (metp) is connected with described rectangular waveguide by embedded screw.
4. Compact broadband circular polarizer according to claim 1, it is characterized in that, described coaxial waveguide converter comprises N-type head, sliding weight of steelyard shape metal section and the second rectangular waveguide, described sliding weight of steelyard shape metal section is connected with described N-type head thread, and described N-type head is connected with described second rectangular waveguide by ring flange.
5. Compact broadband circular polarizer according to claim 1, is characterized in that, described reflection back of the body chamber and feed one-body molded.
6. Compact broadband circular polarizer according to claim 1, is characterized in that, also comprises horn antenna, and described horn antenna is connected by ring flange with described circumference transducer.
7. Compact broadband circular polarizer according to claim 6, is characterized in that, described horn antenna is elliptic aperture horn antenna, circular aperture horn antenna or square bore horn antenna.
8. Compact broadband circular polarizer according to claim 1, is characterized in that, described Compact broadband circular polarizer is 120mm × 50mm × 45mm at the three-dimensional dimension of C-band.
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| CN201310379803.8A CN103457033B (en) | 2013-08-27 | 2013-08-27 | compact broadband circular polarizer |
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| CN201310379803.8A CN103457033B (en) | 2013-08-27 | 2013-08-27 | compact broadband circular polarizer |
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| CN103457033B true CN103457033B (en) | 2016-04-13 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332712B (en) * | 2014-11-22 | 2017-06-06 | 成都锦江电子系统工程有限公司 | Present broadband and wide wave beam ridged horn in a kind of end |
| CN104953293A (en) * | 2015-06-30 | 2015-09-30 | 桂林电子科技大学 | Circularly-polarized horn antenna based on C waveband |
| CN109346827B (en) * | 2018-09-14 | 2020-06-09 | 北京空间飞行器总体设计部 | Small-size wide band circular polarization feed suitable for mars are surveyed |
| CN109473781A (en) * | 2018-10-31 | 2019-03-15 | 广东盛路通信科技股份有限公司 | A kind of high XPD dual polarized antenna feed of ultra wide band |
| CN110289483B (en) * | 2019-06-17 | 2021-06-01 | 北京达顺威尔科技有限公司 | Double-frequency double-circular polarization navigation measurement and control antenna feed source |
| CN110277635B (en) * | 2019-06-17 | 2021-01-01 | 北京达顺威尔科技有限公司 | Three-frequency multi-polarization navigation measurement and control antenna feed source |
| CN110707433B (en) * | 2019-10-24 | 2020-07-17 | 西南交通大学 | High-power-capacity slotted circular waveguide circular polarizer and machining method thereof |
| CN113839219B (en) * | 2021-08-31 | 2022-10-14 | 电子科技大学 | Design method of broadband high-power circular polarizer |
| CN115332817B (en) * | 2022-07-27 | 2024-09-20 | 电子科技大学 | Resonance-free broadband terahertz partition plate circular polarizer |
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| CN102136631A (en) * | 2010-11-01 | 2011-07-27 | 西安空间无线电技术研究所 | S/X double-band circularly polarization feed source |
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| US7236681B2 (en) * | 2003-09-25 | 2007-06-26 | Prodelin Corporation | Feed assembly for multi-beam antenna with non-circular reflector, and such an assembly that is field-switchable between linear and circular polarization modes |
| US20110309987A1 (en) * | 2010-06-20 | 2011-12-22 | Siklu Communication ltd. | Reflector antenna including radome |
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| CN102136631A (en) * | 2010-11-01 | 2011-07-27 | 西安空间无线电技术研究所 | S/X double-band circularly polarization feed source |
| CN103094666A (en) * | 2012-12-21 | 2013-05-08 | 西安电子工程研究所 | Millimeter wave omnidirectional circularly polarized antenna based on circularly polarized loudspeaker |
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