CN109167175A - The band dual-polarized antenna for radiometer feed of Ku - Google Patents
The band dual-polarized antenna for radiometer feed of Ku Download PDFInfo
- Publication number
- CN109167175A CN109167175A CN201810948681.2A CN201810948681A CN109167175A CN 109167175 A CN109167175 A CN 109167175A CN 201810948681 A CN201810948681 A CN 201810948681A CN 109167175 A CN109167175 A CN 109167175A
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- China
- Prior art keywords
- pyramid
- radiometer
- feed
- polarized antenna
- center frequency
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of band dual-polarized antenna for radiometer feeds of Ku, including Conical Corrugated Horn antenna, the circumference converter, orthomode coupler connected by 3D printing integration；The orthomode coupler includes two orthogonal pyramids, 2 rectangular waveguides and a square wave guide, the round mouth of the circumference converter is connect with the round mouth of Conical Corrugated Horn antenna, square opening is connect with one end of orthomode coupler square wave guide, the other end of orthomode coupler square wave guide is connect with the square opening of horizontal pyramid, the rectangular opening of horizontal pyramid is connect with the first rectangular waveguide, vertical pyramid is orthogonal with horizontal pyramid in the centre of horizontal pyramid, intersection is a rectangular opening, the other end of vertical pyramid is connect with the second rectangular waveguide, another waveguide mouth of two rectangular waveguides is respectively as output port.Inventive antenna, converter, coupler integrated design, without assembling, and 3D printing material is light, at low cost.
Description
Technical field
The present invention relates to the band dual-polarized antenna for radiometer feeds of antenna feed technology, especially Ku.
Background technique
The processing method for being traditionally used for microwave and millimeter wave device is to utilize CNC (Computerized Numerical
Control, computer digital control) milling subtracts manufacture process, and the raw material used are usually that electric conductivity is preferably golden
Belong to, such as copper and aluminium.By constructing some special physical structures (distributed constant circuit) come the function of equivalent implementation lumped-circuit
Energy.Therefore, to realize that the function of a microwave device must satisfy two conditions, first is that device will have specific structural framing,
Second is that the part with electro-magnetic wave contacts must be low-loss good conductor.
But there are three aspect drawbacks for the manufacturing process of traditional microwave millimetric wave device: one, due to metal material itself
Density is often excessive, causes the weight of processing device big, the assembly that is unfavorable on aircraft, satellite and some for testing test
Microwave device carrying.Two, the manufacture process that subtracts of tradition CNC milling often generates a large amount of metal consumptive material, can increase
The cost for adding microwave and millimeter wave devices in batches to produce.Three, the manufacturing cycle is long.
The most important feed form of reflector antenna is electromagnetic horn, and performance quality determines the property of entire front end system
Energy.When electromagnetic horn is as reflecting plane aerial feed source, it is desirable that its Phase center stability with higher and approximate circle are symmetrical
Primary pattern, and the antenna pattern of traditional electromagnetic horn feed is different, the face E and the face H in each plane
Phase center be not also overlapped, do not meet the requirement of the symmetrical feed source performance of reflector antenna.
Summary of the invention
The object of the present invention is to provide a kind of band dual-polarized antenna for radiometer feeds of Ku.
To achieve the above object, the present invention takes following technical scheme:
The band dual-polarized antenna for radiometer feed of Ku, including the Conical Corrugated Horn day connected by 3D printing integration
Line, circumference converter, orthomode coupler；The orthomode coupler includes two orthogonal pyramids, 2 rectangular waveguides and one
The round mouth of a square wave guide, the circumference converter is connect with the round mouth of Conical Corrugated Horn antenna, square opening and orthomode coupler
One end of square wave guide connects, and the other end of orthomode coupler square wave guide is connect with the square opening of horizontal pyramid, the square of horizontal pyramid
Shape mouth is connect with the first rectangular waveguide, and vertical pyramid is orthogonal with horizontal pyramid in the centre of horizontal pyramid, and intersection is a rectangle
Mouthful, the other end of vertical pyramid is connect with the second rectangular waveguide, and another waveguide mouth of two rectangular waveguides is respectively as output end
Mouthful.
The present invention receives horizontal polarization and vertical polarization signal simultaneously by Conical Corrugated Horn, the mistake after having an area of converter
It crosses to orthomode coupler, two kinds of orthogonal polarized signals is separated using orthomode coupler, pass through different waveguide mouths
Preferably, 3D printing material is fire resistant resin for output, and rear one layer of conductivity of plating is 1.75 × 10-8The brass of Ω m.
Preferably, 3D printing material is fire resistant resin, and entire antenna feed inside cavity is electroplated one layer of conductivity and is
1.75×10-8The brass of Ω m.
Preferably, the Conical Corrugated Horn is large angle loudspeaker, and subtended angle θ is between 20 degree to 50 degree, the mode of fluting
It is equidistantly to open three groove depths and slot of same size along the parallel loudspeaker axis direction of electromagnetic horn inner surface.
Preferably, horn mouth is equipped with 0.18-0.3 maximum wavelength intermediate zone to first slotting position, and groove depth h is
0.25-0.5 center frequency wavelength, the spacing d of adjacent two slot are 0.1-0.2 center frequency wavelength, and groove width m is 0.7-
The spacing d of 1.0 adjacent two slots.
Preferably, the length of the circumference converter is 1.5 center frequency wavelengths.
Preferably, the orthomode coupler square wave guide length is 0.5 center frequency wavelength, and horizontal pyramid length is
1.5 center frequency wavelengths, the length of vertical pyramid are 1 center frequency wavelength, and the long Ls of the rectangular opening of two pyramids intersection is
0.52 center frequency wavelength, wide Ws are 0.22 center frequency wavelength.
Preferably, working band range is 11.7-12.75GHz.
Preferably, another waveguide mouth of the first rectangular waveguide and the second rectangular waveguide is the standard waveguide of model WR75
Mouthful.
Compared with prior art, the present invention its remarkable advantage are as follows: (1) 3D printing is at low cost, and the time is short, and it is raw to be conducive to batch
It produces；(2) integrated design of the present invention, there is no the mismatches between device；(3) present invention uses fire resistant resin structural physical frame
Structure light weight；(4) directional diagram of the invention is symmetrical, remote this parameter request of hyper-base of S parameter, has better electrical characteristic.
Detailed description of the invention
Fig. 1 is the band dual-polarized antenna for radiometer feed overall structure main view of Ku.
Fig. 2 is the band dual-polarized antenna for radiometer feed orthomode coupler cavity figure of Ku.
Fig. 3 is the return loss of the band dual-polarized antenna for radiometer feed waveguide mouth 1 of Ku.
Fig. 4 is the return loss of the band dual-polarized antenna for radiometer feed waveguide mouth 2 of Ku.
Fig. 5 is the directional diagram of the band dual-polarized antenna for radiometer feed of Ku.
Fig. 6 is the isolation of the band dual-polarized antenna for radiometer feed of Ku.
Fig. 7 is the cross polarization schematic diagram of the band dual-polarized antenna for radiometer feed of Ku.
Specific embodiment
Including Conical Corrugated Horn antenna, the circumference converter, orthomode coupler connected by 3D printing integration；Institute
Stating orthomode coupler includes two orthogonal pyramids, 2 rectangular waveguides and a square wave guide, the round mouth of the circumference converter
It is connect with the round mouth of Conical Corrugated Horn antenna, square opening is connect with one end of orthomode coupler square wave guide, orthomode coupler
The other end of square wave guide is connect with the square opening of horizontal pyramid, and the rectangular opening of horizontal pyramid is connect with the first rectangular waveguide, vertical angle
Bore it is orthogonal with horizontal pyramid in the centre of horizontal pyramid, intersection be a rectangular opening, the other end of vertical pyramid and the second rectangle
Waveguide connection, another waveguide mouth of two rectangular waveguides is respectively as output port.
Horizontal polarization and vertical polarization signal are received simultaneously by Conical Corrugated Horn, is transitioned into just after having an area of converter
Mode coupler is handed over, two kinds of orthogonal polarized signals are separated using orthomode coupler, are exported by different waveguide mouths.
In further embodiment, 3D printing material is fire resistant resin, and entire antenna feed inside cavity is electroplated one layer
Conductivity is 1.75 × 10-8The brass of Ω m.
In further embodiment, the Conical Corrugated Horn be large angle loudspeaker, subtended angle θ between 20 degree to 50 degree,
The mode of fluting is that three groove depths and of same size are equidistantly opened along the parallel loudspeaker axis direction of electromagnetic horn inner surface
Slot.
In further embodiment, horn mouth is equipped with 0.18-0.3 maximum wavelength intermediate zone to first slotting position,
Groove depth h is 0.25-0.5 center frequency wavelength, and the spacing d of adjacent two slot is 0.1-0.2 center frequency wavelength, fluting
Width m is the spacing d of 0.7-1.0 adjacent two slots.
In further embodiment, the length of the circumference converter is 1.5 center frequency wavelengths.
In further embodiment, the orthomode coupler square wave guide length is 0.5 center frequency wavelength, horizontal angle
Cone length is 1.5 center frequency wavelengths, and the length of vertical pyramid is 1 center frequency wavelength, the rectangular opening of two pyramids intersection
Long Ls be 0.52 center frequency wavelength, wide Ws be 0.22 center frequency wavelength.
In further embodiment, working band range is 11.7-12.75Ghz.
Below with reference to embodiment, the present invention will be further described.
Embodiment 1
As shown in Figure 1, subtended angle θ=35o in the present embodiment；Loudspeaker radius R=35.3mm；Cell wall thickness d=4.9mm；
Cell wall spacing m=2mm；Groove depth h=12.28mm；Have an area of converter length L1=22mm；Square wave guide length L2=10.2mm；
The pyramid length L4=37mm being connect with square wave guide；Another pyramid length L3=24.6mm.As shown in Fig. 2, in this example, two
The long Ls=12.5mm, wide Ws=3.9mm of the rectangular opening of pyramid intersection.The size of square wave guide, rectangular waveguide and circular waveguide port
It is the size of Ku wave band standard waveguide.
By HFSS software the front end is emulated, the return loss of waveguide mouth 1 can be obtained as shown in figure 3, waveguide mouth 2
Return loss as shown in figure 4, return loss of two ports within the scope of the working band of front end be both less than -10dB, S11 be less than -
30dB, S22 are less than -15dB in most of frequency range, and overall performance greatly promotes, and meet system requirements.The directional diagram of front end is such as
Shown in Fig. 5, gain reaches as high as 15dB, and the subtended angle in conjunction with reflector antenna used is 35 degree, and the side of corresponding edge cuts level and is
4.47dB, reduces -11dB, and high gain high directivity meets the requirement of design.The interport isolation of waveguide mouth 1 and waveguide mouth 2
As shown in fig. 6, having reached -57.5dB hereinafter, interference very little between illustrating two-port.Cross polarization such as Fig. 7 institute of entire front end
Show, the face E, the face H isolation also reached -20dB or more.In conclusion the original intention short from low cost, mass production, fabrication cycle
From the point of view of, the existing good electrical characteristic of the present invention, and meet the basic demand used.
Claims (8)
- The band dual-polarized antenna for radiometer feed of 1.Ku, which is characterized in that including the ripple circle connected by 3D printing integration Bore electromagnetic horn, circumference converter, orthomode coupler；The orthomode coupler includes two orthogonal pyramids, 2 rectangles Waveguide and a square wave guide, it is described circumference converter round mouth connect with the round mouth of Conical Corrugated Horn antenna, square opening with it is orthogonal One end of mode coupler square wave guide connects, and the other end of orthomode coupler square wave guide is connect with the square opening of horizontal pyramid, horizontal The rectangular opening of pyramid is connect with the first rectangular waveguide, and vertical pyramid is orthogonal with horizontal pyramid in the centre of horizontal pyramid, intersection For a rectangular opening, the other end of vertical pyramid is connect with the second rectangular waveguide, and the other end of two rectangular waveguides is respectively as defeated Exit port.
- 2. the band dual-polarized antenna for radiometer feed of Ku according to claim 1, which is characterized in that 3D printing material is resistance to High-temperature resin, it is 1.75 × 10 that one layer of conductivity, which is electroplated, in entire antenna feed inside cavity-8The brass of Ω m.
- 3. the band dual-polarized antenna for radiometer feed of Ku according to claim 1, which is characterized in that the ripple circular cone loudspeaker Be large angle loudspeaker, for subtended angle θ between 20 degree to 50 degree, the mode of fluting is loudspeaker axis parallel along electromagnetic horn inner surface Equidistantly open three groove depths and slot of same size in direction.
- 4. the band dual-polarized antenna for radiometer feed of Ku according to claim 3, which is characterized in that horn mouth is to first Slotting position be equipped with 0.18-0.3 maximum wavelength intermediate zone, groove depth h be 0.25-0.5 center frequency wavelength, adjacent two The spacing d of slot is 0.1-0.2 center frequency wavelength, and groove width m is the spacing d of 0.7-1.0 adjacent two slots.
- 5. the band dual-polarized antenna for radiometer feed of Ku according to claim 1, which is characterized in that the circumference converter Length be 1.5 center frequency wavelengths.
- 6. according to claim 1 or 5 any band dual-polarized antenna for radiometer feeds of Ku, which is characterized in that it is described just Friendship mode coupler square wave guide length is 0.5 center frequency wavelength, and horizontal pyramid length is 1.5 center frequency wavelengths, vertically The length of pyramid is 1 center frequency wavelength, and the long Ls of the rectangular opening of two pyramids intersection is 0.52 center frequency wavelength, wide Ws For 0.22 center frequency wavelength.
- 7. the band dual-polarized antenna for radiometer feed of Ku according to claim 1, which is characterized in that working band range is 11.7-12.75GHz。
- 8. the band dual-polarized antenna for radiometer feed of Ku according to claim 1, which is characterized in that the first rectangular waveguide and Another waveguide mouth of second rectangular waveguide is the standard waveguide mouth of model WR75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948681.2A CN109167175A (en) | 2018-08-20 | 2018-08-20 | The band dual-polarized antenna for radiometer feed of Ku |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948681.2A CN109167175A (en) | 2018-08-20 | 2018-08-20 | The band dual-polarized antenna for radiometer feed of Ku |
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| CN109167175A true CN109167175A (en) | 2019-01-08 |
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| CN201810948681.2A Pending CN109167175A (en) | 2018-08-20 | 2018-08-20 | The band dual-polarized antenna for radiometer feed of Ku |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615162A (en) * | 2020-12-14 | 2021-04-06 | 西安电子科技大学 | Common-caliber three-frequency multi-mode horn antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3201715A (en) * | 1961-10-25 | 1965-08-17 | Sperry Rand Corp | Coaxial to waveguide mode-converting duplexer employing nonreciprocal phase shifting means |
| CN2126491U (en) * | 1992-04-25 | 1992-12-30 | 贵州省国营都匀无线电器材厂 | Principal focus double-polarized feeder source for receiving of tv. |
| US7671703B1 (en) * | 2007-06-08 | 2010-03-02 | General Dynamics C4 Systems, Inc. | Coaxial orthomode transducer |
| KR20120028732A (en) * | 2010-09-15 | 2012-03-23 | 홍익대학교 산학협력단 | Orthomode transducer using trapezoidal waveguide |
| CN107351374A (en) * | 2017-07-17 | 2017-11-17 | 西安工业大学 | A kind of process for machining and manufacturing of high frequency antenna feed |
-
2018
- 2018-08-20 CN CN201810948681.2A patent/CN109167175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3201715A (en) * | 1961-10-25 | 1965-08-17 | Sperry Rand Corp | Coaxial to waveguide mode-converting duplexer employing nonreciprocal phase shifting means |
| CN2126491U (en) * | 1992-04-25 | 1992-12-30 | 贵州省国营都匀无线电器材厂 | Principal focus double-polarized feeder source for receiving of tv. |
| US7671703B1 (en) * | 2007-06-08 | 2010-03-02 | General Dynamics C4 Systems, Inc. | Coaxial orthomode transducer |
| KR20120028732A (en) * | 2010-09-15 | 2012-03-23 | 홍익대학교 산학협력단 | Orthomode transducer using trapezoidal waveguide |
| CN107351374A (en) * | 2017-07-17 | 2017-11-17 | 西安工业大学 | A kind of process for machining and manufacturing of high frequency antenna feed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615162A (en) * | 2020-12-14 | 2021-04-06 | 西安电子科技大学 | Common-caliber three-frequency multi-mode horn antenna |
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Application publication date: 20190108 |
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