CN106329148A - Structure-integrated circular polarization feed source - Google Patents
Structure-integrated circular polarization feed source Download PDFInfo
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- CN106329148A CN106329148A CN201510404036.0A CN201510404036A CN106329148A CN 106329148 A CN106329148 A CN 106329148A CN 201510404036 A CN201510404036 A CN 201510404036A CN 106329148 A CN106329148 A CN 106329148A
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Abstract
The invention provides a structure-integrated circular polarization feed source. Circular polarization signal radiation is achieved through a structure-integrated design. The structure-integrated circular polarization feed source comprises an input waveguide as an input port of a microwave signal and a standard rectangular waveguide flange plate, an impedance conversion segment, a circular polarization segment and a horn radiator, wherein the impedance conversion segment is used for connecting the input waveguide and a circular waveguide of the circular polarization segment; a circular polarizer and an input electric field form an angular relationship of 45 degrees, so that an input linear polarization field is converted into a circular polarization field; and the horn radiator is used for transmitting a circular polarization signal into an external space. Therefore, circular polarization radiation is achieved by using the structure-integrated circular polarization feed source provided by the invention; various parts are of the structure-integrated design; the processing technology is easy to achieve; the reliability is high; and the structure-integrated circular polarization feed source can be used for mass production of array antenna feed source units.
Description
Technical field
The invention belongs to antenna technical field, relate to structure-integrated design, the feed of radiation circularly polarized signal, be specifically related to one
Plant structure-integrated circular polarization feed, by structure-integrated design, it is achieved circularly polarized signal radiates.
Background technology
In high-gain phased array antenna, antenna array is rearranged by the feed of a large amount of same design.Communication antenna is in order to eliminate
The loss that linear polarization alignment error causes, general employing circular polarisation mode of operation, feed need to possess circular polarization radiation ability.Due to
Feed quantity is big, in order to reduce processing cost, it is necessary to use simple and reliable processing technique, it is achieved mass production.
By implementation, feed can be to be divided into the forms such as micro-strip, oscillator, spiral, Waveguide slot, loudspeaker.In order to reduce feed
It is lost, improves aperture efficiency, reduction element mutual coupling effect, guarantees high reliability, general employing horn feed form.
Feed need to use waveguide circular polarizer to provide circularly polarized signal.Waveguide circular polarizer has metal spacer, cycle diaphragm, cycle
The implementations such as capacitive pin, wherein metal spacer, the structure complexity of cycle diaphragm, dimension precision requirement height, typically use line
The processing technique such as cutting, electric spark, difficulty of processing is big, time length, cost are high.Cycle capacitive pin it is generally required to manual adjustment,
Being unfavorable for batch production, consistency of performance is poor.
Therefore, in prior art, circular polarization feed cannot produce in batch, and processing technique is relative complex, further, since
Circular polarizer structure is complicated, difficulty of processing is big, and the process velocity of circular polarizer is the slowest.
Summary of the invention
In order to solve problems of the prior art, the present invention proposes a kind of structure-integrated circular polarization feed, is adapted to
Batch production, the simple application scenario of processing technique are required for circular polarization feed, and use integration processing technique, it is achieved
The rapid processing of circular polarizer, solves the problem that circular polarizer structure is complicated, difficulty of processing is big.
The invention provides a kind of structure-integrated circular polarization feed, by structure-integrated design, it is achieved circularly polarized signal radiates.
This structure-integrated circular polarization feed includes: input waveguide, as the input port of microwave signal, and is the ripple of standard rectangular
Lead ring flange；Transformer section, couples together the circular waveguide of input waveguide with circular polarisation section；Circular polarisation section, entelechy therein
Changing device with input electric field is 45° angle degree relation, thus is circular polarisation field by the linear polarization field transformation of input；And horn radiator,
For circularly polarized signal is traveled to space outerpace.
Specifically, input waveguide is for via its rectangular waveguide mouth input microwave signal and transmission waveguide basic mode electromagnetic field.Impedance
Transforming section includes: quarter-wave single-unit impedance transformer, is used for performing impedance matching, so that rectangular waveguide and circular polarisation
The circular waveguide of section is connected.
In the present invention, the direction of an electric field of input waveguide is 45° angle degree relation with the circular polarizer of circular polarisation section, thus inputs electricity
Field is broken down into following two component: the component parallel with circular polarizer；And the component vertical with circular polarizer, wherein, two
The phases such as individual component constant amplitude.
Correspondingly, the circular polarizer of circular polarisation section makes that the component phase parallel with circular polarizer delays 90 ° and amplitude is constant, thus
Form circular polarisation field.
Preferably, circular polarizer is to use the processing of thin-walled Sheet Metal Forming Technology, thus realizes structural strengthening while realizing circular polarisation.
Horn radiator is for transforming to prototype radiating aperture from circular waveguide, thus realizes the space radiation of circularly polarized signal.
Input waveguide, transformer section, circular polarisation section and horn radiator are structure-integrated design.
Therefore, the structure-integrated circular polarization feed of the present invention is used, it is achieved that circular polarization radiation, each several part is structure-integrated
Design, processing technique easily realizes, and reliability is high, can be used for the batch production of array antenna feed unit.
Accompanying drawing explanation
Fig. 1 is the appearance schematic diagram of the structure-integrated circular polarization feed of the present invention；
Fig. 2 is the structural representation of the input waveguide in structure-integrated circular polarization feed and transformer section；And
Fig. 3 is the generalized section of structure-integrated circular polarization feed.
Detailed description of the invention
It will be appreciated that the structure-integrated circular polarization feed of the present invention, by input waveguide, transformer section, circular polarisation section, loudspeaker
Irradiator forms, and microwave signal input port is standard rectangular waveguide, is connected through the circular waveguide of transformer section with circular polarisation section,
The circular polarizer of circular polarisation section is 45° angle degree relation with input electric field, is circular polarisation field by the linear polarization field transformation of input, entelechy
Change signal and travel to space outerpace through horn radiator.Each several part is structure-integrated design, and processing technique easily realizes, reliably
Property high, can be used for the batch production of array antenna feed unit.
Wherein, input waveguide is standard rectangular waveguide flange, transmission waveguide basic mode electromagnetic field.Transformer section is 1/4th
Wavelength single-unit impedance transformer, it is achieved the transition between rectangular waveguide and circular waveguide, it is to avoid because bore changes the signaling reflex caused.
The circular polarizer of circular polarisation section, based on cycle diaphragm principle, uses smooth phase shift curved surface to replace the phase shift function of cycle diaphragm,
Thus improve the processing technique of circular polarizer.Electric field by input waveguide, transformer section input is bent with the phase shift of circular polarizer
Face is 45° angle degree relation, and input electric field can be analyzed to circular polarizer vertical 2 components parallel with circular polarizer, 2
The phases such as component constant amplitude.After circular polarizer, compared with vertical component, parallel component phase place delays 90 °, and amplitude is constant, from
And form circular polarisation field.
Horn radiator transforms to circular radiation bore from circular waveguide, it is achieved the space radiation of circularly polarized signal.
The present invention is described in detail for 1-3 and detailed description of the invention below in conjunction with the accompanying drawings.
As it is shown in figure 1, present configuration integration circular polarization feed include input waveguide 1, transformer section 2, circular polarisation section 3,
Horn radiator 4.Therefore, this feed achieves circularly polarized signal radiation, and each several part is structure-integrated design, processing technique
Easily realize, it is not necessary to be linked and packed, it is not necessary to property regulation.
Wherein, the cross sectional dimensions of input waveguide 1 is standard rectangular waveguide dimensions, transmits TE10 basic mode electromagnetic field, and length is not
Less than quarter-wave guide wavelength.
Transformer section 2 is quarter-wave single-unit impedance transformer, and length is about quarter-wave guide wavelength, and its feature hinders
Anti-Z meetsZ in formula1For the characteristic impedance of input waveguide 1, Z2Circular waveguide feature for circular polarisation section 3 hinders
Anti-.
The cross section of circular polarisation section 3 is circular waveguide, should allow to propagate TM01 basic mode electromagnetic field, and suppress higher mode to propagate, circle
Waveguide diameter d should be 0.764 λ//＜ d ＜ 0.971 λL, λ in formula//For high frequency points f in working frequency range//WavelengthλLFor frequency f minimum in working frequency rangeLWavelengthC is the light velocity.
Visible, that input for the rectangular waveguide mouth of input waveguide 1 microwave signal, by the quarter-wave list of transformer section 2
Joint impedance transformer realizes impedance matching, is connected with the circular waveguide of circular polarisation section 3.
In the present invention, the direction of an electric field of input waveguide 1 is 45° angle degree relation with the circular polarizer of circular polarisation section 3, input electricity
The phases such as field can be analyzed to circular polarizer vertical 2 components parallel with circular polarizer, 2 component constant amplitudes.Through circular polarisation
After device, compared with vertical component, parallel component phase place delays 90 °, and amplitude is constant, thus forms circular polarisation field.
As in figure 2 it is shown, the circular polarizer of circular polarisation section 3 is 2 sections of symmetrical smooth phase shift curved surfaces, the axial slices of phase shift curved surface
It is 45 ° of angles with the plane of symmetry of input waveguide 1, transformer section 2.From input waveguide 1, the line of transformer section 2 input
Polarization field can be analyzed to orthogonal field components E1 of phase, the E2 such as 2 constant amplitudes, and E1 is parallel with circular polarizer axial slices, E2 and circle
Polarizer axial slices is vertical.
In electromagnetic field communication process, compared with E2, there is Phase delay in E1 under the effect of phase shift curved surface, finally realize E1,
The phase contrast of E2 90 °, amplitude are equal, thus form circular polarisation field (as shown in Figure 3).
The phase shift curved surface of circular polarisation section 3 is projected as cosine curve in axial slices, and it stretches into the depth S in circular waveguide and isIn formula, A is for stretching into depth capacity, and L is the axial length of phase shift curved surface, and x is axial distance variable.
The phase shift curved surface part being projected as circle on tangent plane orthogonal to the axis, its a diameter of M.A, L, M are relevant cooperation
Coefficient, realizes phase-delay quantity jointly.In order to realize matched well, 0.1d≤A≤0.15d can be taken, determined by emulation
The value of L, M.
The radiation port diameter D of horn radiator 4 determines according to required feed gain G,In formula, λ is work
Making wavelength, η is aperture efficiency.Determine irradiator length by emulation, thus obtain matched well.
The circular polarizer of the present invention uses the processing of thin-walled Sheet Metal Forming Technology, while realizing circular polarisation, it is possible to achieve structural strengthening is imitated
Really.
In sum, passing through the present invention, it is achieved that circular polarization radiation, each several part is structure-integrated design, and processing technique is easy
Realizing, reliability is high, can be used for the batch production of array antenna feed unit.
To each building block, position relationship and the connected mode of the present invention in the case of not changing its function, the equivalence change carried out
Change or substitute, also fall into protection scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (8)
1. a structure-integrated circular polarization feed, by structure-integrated design, it is achieved circularly polarized signal radiates, its feature
It is, including:
Input waveguide, as the input port of microwave signal, and is the waveguide flange of standard rectangular；
Transformer section, couples together the circular waveguide of described input waveguide with circular polarisation section；
Described circular polarisation section, circular polarizer therein is 45° angle degree relation with input electric field, thus by the linear polarization of input
Field transformation is circular polarisation field；And
Horn radiator, for traveling to space outerpace by circularly polarized signal.
Structure-integrated circular polarization feed the most according to claim 1, it is characterised in that described input waveguide is used for warp
Described microwave signal and transmission waveguide basic mode electromagnetic field is inputted by its rectangular waveguide mouth.
Structure-integrated circular polarization feed the most according to claim 2, it is characterised in that described transformer section includes:
Quarter-wave single-unit impedance transformer, is used for performing impedance matching, so that described rectangular waveguide and described entelechy
The described circular waveguide changing section is connected.
Structure-integrated circular polarization feed the most according to claim 1, it is characterised in that the electric field of described input waveguide
The circular polarizer of direction and described circular polarisation section is 45° angle degree relation, thus described input electric field is broken down into following two component:
The component parallel with described circular polarizer；And
The component vertical with described circular polarizer,
Wherein, the phase such as said two component constant amplitude.
Structure-integrated circular polarization feed the most according to claim 4, it is characterised in that the entelechy of described circular polarisation section
Change device to be used for:
Make that the component phase parallel with described circular polarizer delays 90 ° and amplitude is constant, thus form circular polarisation field.
Structure-integrated circular polarization feed the most according to claim 1, it is characterised in that described circular polarizer is to use
The processing of thin-walled Sheet Metal Forming Technology, thus realize structural strengthening while realizing circular polarisation.
Structure-integrated circular polarization feed the most according to claim 1, it is characterised in that described horn radiator is used for
Transform to prototype radiating aperture from described circular waveguide, thus realize the space radiation of circularly polarized signal.
Structure-integrated circular polarization feed the most according to claim 1, it is characterised in that wherein, described input waveguide,
Described transformer section, described circular polarisation section and described horn radiator are structure-integrated design.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404036.0A CN106329148A (en) | 2015-07-09 | 2015-07-09 | Structure-integrated circular polarization feed source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404036.0A CN106329148A (en) | 2015-07-09 | 2015-07-09 | Structure-integrated circular polarization feed source |
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| CN106329148A true CN106329148A (en) | 2017-01-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887693A (en) * | 2017-12-12 | 2018-04-06 | 成都雷电微力科技有限公司 | A kind of circular polarisation probe antenna structure |
| CN108539404B (en) * | 2018-05-17 | 2019-10-11 | 西安电子科技大学 | Circular waveguide antenna based on dielectric lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141015A (en) * | 1976-09-16 | 1979-02-20 | Hughes Aircraft Company | Conical horn antenna having a mode generator |
| US20080117113A1 (en) * | 2006-05-24 | 2008-05-22 | Haziza Dedi David | Integrated waveguide cavity antenna and reflector rf feed |
| US8354969B2 (en) * | 2009-08-19 | 2013-01-15 | Microelectronics Technology, Inc. | Polarizer and waveguide antenna apparatus using the same |
| CN104064875A (en) * | 2014-07-02 | 2014-09-24 | 南京理工大学 | Waveguide-type W wave band circularly polarized horn antenna |
-
2015
- 2015-07-09 CN CN201510404036.0A patent/CN106329148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4141015A (en) * | 1976-09-16 | 1979-02-20 | Hughes Aircraft Company | Conical horn antenna having a mode generator |
| US20080117113A1 (en) * | 2006-05-24 | 2008-05-22 | Haziza Dedi David | Integrated waveguide cavity antenna and reflector rf feed |
| US8354969B2 (en) * | 2009-08-19 | 2013-01-15 | Microelectronics Technology, Inc. | Polarizer and waveguide antenna apparatus using the same |
| CN104064875A (en) * | 2014-07-02 | 2014-09-24 | 南京理工大学 | Waveguide-type W wave band circularly polarized horn antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887693A (en) * | 2017-12-12 | 2018-04-06 | 成都雷电微力科技有限公司 | A kind of circular polarisation probe antenna structure |
| CN107887693B (en) * | 2017-12-12 | 2023-11-17 | 成都雷电微力科技股份有限公司 | Circularly polarized probe antenna structure |
| CN108539404B (en) * | 2018-05-17 | 2019-10-11 | 西安电子科技大学 | Circular waveguide antenna based on dielectric lens |
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