CN114552183B - X/Ku wave band radiator and implementation method - Google Patents
X/Ku wave band radiator and implementation method Download PDFInfo
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- CN114552183B CN114552183B CN202210180229.2A CN202210180229A CN114552183B CN 114552183 B CN114552183 B CN 114552183B CN 202210180229 A CN202210180229 A CN 202210180229A CN 114552183 B CN114552183 B CN 114552183B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- 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
- H01Q13/0266—Waveguide horns provided with a flange or a choke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an X/Ku wave band radiator and an implementation method thereof, belonging to the technical field of electromagnetic fields and microwaves, and comprising a reflecting cavity, a horn body, a convex edge choke shaping ring groove, an impedance blending section, a back cover plate, a radio frequency socket, a low impedance coupling section, a linear gradual transition section, a ridge flat section and a ridge step jump; electromagnetic signals are input from a radio frequency socket, and after passing through an impedance blending section, the electromagnetic signals excite a start TE in a loudspeaker body 10 A die for radiating electromagnetic waves to an external space to form spatially directed radiation; the convex edge choke ring groove suppresses the radio frequency current on the outer wall of the antenna, has a shaping effect on the radiation pattern, and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity and the back cover plate are used for guaranteeing unidirectional radiation; and ridge ladder jump is adopted between the ridge flat section and the linear gradual transition section. The invention solves the problem of miniaturization of the broadband electronic equipment antenna working in the X/Ku wave band, adapts to the self-adaptive requirements of wide bandwidth wave beam and polarization of the system, and eliminates the problems of wave beam distortion and head distortion of the traditional mode.
Description
Technical Field
The invention relates to the technical field of electromagnetic fields and microwaves, in particular to an X/Ku wave band radiator and an implementation method thereof.
Background
The traditional four-ridge horn antenna adopts the technical measures of port-face ridge eversion (port-face matching) or index gradual change and the like to realize the broadband. These technical measures not only have difficulty in solving the technical problems of miniaturization, beam shaping and the like of the wide bandwidth beam antenna, but also have serious performance defects of beam distortion (the degree of the distortion varies with frequency) above the X-band.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an X/Ku wave band radiator and an implementation method thereof, solves the problem of miniaturization of a broadband electronic equipment antenna working in an X/Ku wave band, adapts to the self-adaptive requirements of wide bandwidth wave beams and polarization of a system, and eliminates the problems of wave beam distortion and head tilting in the traditional mode.
The invention aims at realizing the following scheme:
an X/Ku band radiator comprises a reflecting cavity, a horn body, a convex edge choke shaping ring groove, an impedance blending section, a back cover plate, a radio frequency socket, a low impedance coupling section, a linear gradual transition section, a ridge flat section and a ridge step jump; electromagnetic signals are input from a radio frequency socket, and after passing through an impedance blending section, the electromagnetic signals excite a start TE in a loudspeaker body 10 A die for radiating electromagnetic waves to an external space to form spatially directed radiation; the convex edge choke ring groove suppresses the radio frequency current on the outer wall of the antenna, has a shaping effect on the radiation pattern, and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity and the back cover plate are used for guaranteeing unidirectional radiation; ridge ladder jump is adopted between the ridge flat section and the linear gradual transition section, and the linear gradual transition section and the ridge ladder jump function are space impedance matching after the length of the horn body is compressed; the combination of the low impedance coupling section and the impedance tuning section implements a broadband feed structure.
Further, the groove depth of the convex edge choke shaping ring groove is larger than 1/4 of the wavelength of the low-frequency end, and the groove width is selected in the wavelength range of the low-frequency end of 1/15-1/8.
Further, the size of the ridge step jump is selected in the range of 1-3 mm.
Further, the reflecting cavity, the horn body and the convex edge choke shaping ring groove are of an integral structure.
Further, the length of the linear gradual transition section is controlled to be in the wavelength range of 0.5-1 low-frequency end.
Further, the length of the ridge flat section is prolonged by 1-2 mm on the basis of meeting the installation requirement of the feed probe.
Further, the length of the impedance blending section is controlled within the equivalent wavelength range of 0.3-0.45 high-frequency ends.
Further, the direct step jump is carried out between the horn body and the reflecting cavity; the side length of the reflecting cavity is controlled to be 0.15-0.3 low-frequency end wavelength, and the depth of the reflecting cavity is controlled to be 0.3-0.4 high-frequency end wavelength; the inner caliber size of the horn body 2 is controlled to be 0.40-0.55 low-frequency end wavelength.
Further, the impedance blending section is implemented by a coaxial line.
A method for implementing the X/Ku band radiator as defined in any one of the above, comprising the steps of: the linear section TEM model impedance of the ridge is controlled to be in the range of 80-120 ohms, and the linear section TEM model impedance of the impedance blending section is controlled to be in the range of 60-80 ohms.
The beneficial effects of the invention include:
in the embodiment of the invention, the convex edge choke ring groove is added on the mouth surface, so that the problem of serious low-frequency beam distortion of the small-caliber antenna in the traditional design mode is solved.
In the embodiment of the invention, the TEM model impedance of the ridge straight section is controlled to be 80-120 ohms, so that the problem of high-frequency beam distortion existing in the traditional design mode for a long time is solved.
In the embodiment of the invention, the combination of the linear transition and the step jump of the ridge solves the problem of broadband matching caused by the longitudinal size compression of the antenna, and eliminates the problem of severe fluctuation of impedance-frequency characteristics of the antenna caused by the size compression;
in the embodiment of the invention, the impedance blending section blends the impedance frequency characteristic of the antenna and solves the impedance matching problem of the antenna and a rear-end feed transmission line (TEM mode characteristic impedance 50 ohms). The antenna is at 3: the standing wave coefficient of the orthogonal port in the 1 bandwidth is better than 2.5.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1a is a schematic diagram of a first principle of the apparatus of the present invention;
FIG. 1b is a schematic diagram of a first principle of the apparatus of the present invention;
FIG. 2 shows the standing wave coefficients (F2/F1=3:1) of an embodiment of the present invention;
FIG. 3 is a radiation pattern (F1; dashed line: E plane; solid line: H plane) according to an embodiment of the present invention;
FIG. 4 is a radiation pattern (F0; dashed line: E plane; solid line: H plane) of an embodiment of the present invention;
FIG. 5 is a radiation pattern (F2; dashed line: E plane; solid line: H plane) according to an embodiment of the present invention;
FIG. 6 is an axial gain of an embodiment of the present invention;
FIG. 7 illustrates port isolation according to an embodiment of the present invention;
in the figure, a 1-convex edge choke shaping ring groove, a 2-horn body, a 3-back cover plate, a 4-radio frequency socket, a 5-impedance blending section, a 6-low impedance coupling section, a 7-reflecting cavity, an 8-ridge flat section, a 9-linear gradual transition section and a 10-ridge step jump are formed.
Detailed Description
All of the features disclosed in all of the embodiments of this specification, or all of the steps in any method or process disclosed implicitly, except for the mutually exclusive features and/or steps, may be combined and/or expanded and substituted in any way.
The technical conception, the technical problems to be solved, the working principle, the working process and the beneficial effects of the invention are further and fully described below according to the attached drawings 1a, 1b and 2-7.
The embodiment of the invention aims to solve the problems in the background and provides an X/Ku wave band compact type four-ridge radiator, wherein a horn body 2 is the four-ridge radiator, and a linear gradual transition section 9 is the four-ridge radiatorThe basic principle is as follows: electromagnetic signals are input from a radio frequency socket, and after impedance blending section, the quasi-TE is excited in the four-ridge horn body 10 And a mode for radiating electromagnetic waves to the external space to form spatially directed radiation.
The convex edge choke ring groove suppresses the radio frequency current on the outer wall of the antenna, has a shaping effect on the radiation pattern, and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity and the back cover plate are used for guaranteeing unidirectional radiation; the ridge linear gradual transition section and the step jump aim at solving the problem of space impedance matching after the length of the horn body is compressed; the combination of the low impedance coupling section and the impedance tuning section implements a broadband feed structure.
By adopting the embodiment of the invention, the standing wave coefficient bandwidth (standing wave coefficient is better than 2.5) reaches 3:1. at 3.0: and 1, in the range of the working bandwidth, the radiation pattern is axisymmetric, so that the defects of beam distortion, head distortion and the like in the traditional implementation mode are eliminated. Typical properties are shown in fig. 2-7.
Example 1
An X/Ku band radiator, as shown in fig. 1a and 1b, comprises a reflecting cavity 7, a horn body 2, a convex edge choke shaping ring groove 1, an impedance blending section 5, a back cover plate 3, a radio frequency socket 4, a low impedance coupling section 6, a linear gradual transition section 9, a ridge flat section 8 and a ridge step jump 10;
electromagnetic signals are input from the radio frequency socket 4, and after passing through the impedance tempering section 5, the excitation initiator TE in the horn body 2 10 A die for radiating electromagnetic waves to an external space to form spatially directed radiation; the convex edge choke ring groove 1 suppresses the radio frequency current of the outer wall of the antenna, has a shaping effect on the radiation pattern, and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the function of the reflective cavity 7 and the back cover plate 3 is to ensure unidirectional radiation; ridge step jump 10 is adopted between the ridge flat section 8 and the linear gradual transition section 9, and the linear gradual transition section 9 and the ridge step jump 10 have the function of space impedance matching after the length of the horn body is compressed; the combination of the low impedance coupling section 6 and the impedance tuning section 5 implements a broadband feed structure.
Example 2
Based on the embodiment 1, the groove depth of the convex edge choke shaping ring groove 1 is larger than 1/4 of the wavelength of the low-frequency end, and the groove width is selected from the wavelength range of the low-frequency end of 1/15-1/8.
Example 3
The dimensions of the ridge step jump 10 are selected in the range of 1-3 mm on the basis of embodiment 1.
Example 4
On the basis of the embodiment 1, the reflecting cavity 7, the horn body 2 and the convex edge choke shaping ring groove 1 are of an integral structure.
Example 5
On the basis of the embodiment 1, the length of the linear gradual transition section 9 is controlled in the wavelength range of 0.5-1 low-frequency end.
Example 6
On the basis of the embodiment 1, the length of the ridge straight section 8 is prolonged by 1-2 mm on the basis of meeting the installation requirement of a feed probe.
Example 7
On the basis of the embodiment 1, the length of the impedance tempering section 5 is controlled within the equivalent wavelength range of 0.3-0.45 high-frequency ends.
Example 8
On the basis of the embodiment 1, the horn body 2 and the reflecting cavity 7 directly jump in steps; the side length of the reflecting cavity 7 is controlled to be 0.15-0.3 low-frequency end wavelength, and the depth is controlled to be 0.3-0.4 high-frequency end wavelength; the inner caliber size of the horn body 2 is controlled to be 0.40-0.55 low-frequency end wavelength.
Example 9
On the basis of embodiment 1, the impedance tempering section 5 is realized by a coaxial line.
Example 10
The implementation method of the X/Ku band radiator according to any one of embodiments 1 to 9 comprises the following steps: the characteristic impedance of the ridge flat section 8TEM mode is controlled to be in the range of 80-120 ohms, and the characteristic impedance of the impedance blending section 5TEM mode is controlled to be in the range of 60-80 ohms.
In the other technical features of the embodiment, those skilled in the art can flexibly select to meet different specific actual requirements according to actual conditions. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known compositions, structures, or components have not been described in detail so as not to obscure the invention, and are within the scope of the invention as defined by the appended claims.
In addition to the foregoing examples, those skilled in the art will recognize from the foregoing disclosure that other embodiments can be made and in which various features of the embodiments can be interchanged or substituted, and that such modifications and changes can be made without departing from the spirit and scope of the invention as defined in the appended claims.
In the description of the invention, the terms "disposed," "mounted," "connected," and "connected" are used in a broad sense, and should be construed broadly by those skilled in the art, unless explicitly stated or limited otherwise. For example, the present invention may be fixedly connected, movably connected, integrally connected, or partially connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements, etc., and it is understood by those skilled in the art that the specific meaning of the terms in the present invention, i.e., the expression of the word language and the implementation of the actual technology may be flexibly corresponding, and the expression of the word language (including the drawing) in the specification of the present invention does not constitute any single limiting interpretation of the claims.
Modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the invention as defined by the appended claims. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known techniques, such as specific details and other technical conditions, have not been described in detail in order to avoid obscuring the present invention.
Claims (10)
1. The X/Ku band radiator is characterized by comprising a reflecting cavity (7), a horn body (2), a convex edge choke shaping ring groove (1), an impedance blending section (5), a back cover plate (3), a radio frequency socket (4), a low-impedance coupling section (6), a linear gradual transition section (9), a ridge flat section (8) and a ridge step jump (10); the horn body (2) is a four-ridge radiator, and the linear gradual transition section (9) is a four-ridge radiator;
electromagnetic signals are input from a radio frequency socket (4), and after passing through an impedance tempering section (5), an excitation initiation TE is excited in a horn body (2) 10 A die for radiating electromagnetic waves to an external space to form spatially directed radiation; the convex edge choke shaping ring groove (1) suppresses the radio frequency current on the outer wall of the antenna, performs shaping function on the radiation pattern, and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity (7) and the back cover plate (3) are used for guaranteeing unidirectional radiation; a ridge step jump (10) is adopted between the ridge flat section (8) and the linear gradual transition section (9), and the linear gradual transition section (9) and the ridge step jump (10) have the function of space impedance matching after the length of the horn body is compressed; the combination of the low impedance coupling section (6) and the impedance tempering section (5) realizes a broadband feed structure.
2. The X/Ku band radiator of claim 1, wherein the ridge choke shaping ring groove (1) has a groove depth greater than 1/4 of the wavelength of the low frequency end, and a groove width selected in the range of 1/15 to 1/8 of the wavelength of the low frequency end.
3. The X/Ku band radiator according to claim 1, characterized in that the dimension of the ridge step jump (10) is selected in the range of 1-3 mm.
4. The X/Ku band radiator according to claim 1, characterized in that the reflecting cavity (7), the horn (2), the flange choke shaping ring groove (1) are of unitary construction.
5. The X/Ku band radiator according to claim 1, characterized in that the length of the straight gradual transition section (9) is controlled between 0.5 and 1 low frequency end wavelength range.
6. The X/Ku band radiator according to claim 1, characterized in that the ridge flat section (8) length is prolonged by 1-2 mm on the basis of meeting the feed probe installation requirements.
7. The X/Ku band radiator according to claim 1, characterized in that the length of the impedance tempering section (5) is controlled within 0.3-0.45 high frequency end equivalent wavelength ranges.
8. The X/Ku band radiator according to claim 1, characterized by a direct step jump between the horn (2) and the reflective cavity (7); the side length of the reflecting cavity (7) is controlled to be 0.15-0.3 low-frequency end wavelength, and the depth is controlled to be 0.3-0.4 high-frequency end wavelength; the inner caliber size of the horn body (2) is controlled to be 0.40-0.55 low-frequency end wavelengths.
9. The X/Ku band radiator according to claim 1, characterized in that the impedance tempering section (5) is realized with a coaxial line.
10. A method for implementing the X/Ku band radiator according to any one of claims 1 to 9, comprising the steps of: the TEM model impedance of the ridge flat section (8) is controlled to be in the range of 80-120 ohms, and the TEM model impedance of the impedance blending section (5) is controlled to be in the range of 60-80 ohms.
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| CN202210180229.2A CN114552183B (en) | 2022-02-25 | 2022-02-25 | X/Ku wave band radiator and implementation method |
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| CN202210180229.2A CN114552183B (en) | 2022-02-25 | 2022-02-25 | X/Ku wave band radiator and implementation method |
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| CN114552183B true CN114552183B (en) | 2023-06-06 |
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| CN115101937B (en) * | 2022-06-20 | 2023-11-03 | 北京航空航天大学 | Horn feed source |
| CN115458912A (en) * | 2022-08-31 | 2022-12-09 | 西安电子科技大学 | High-isolation double-horn antenna structure |
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