CN114552183A - XKu waveband radiator and implementation method - Google Patents
XKu waveband radiator and implementation method Download PDFInfo
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- CN114552183A CN114552183A CN202210180229.2A CN202210180229A CN114552183A CN 114552183 A CN114552183 A CN 114552183A CN 202210180229 A CN202210180229 A CN 202210180229A CN 114552183 A CN114552183 A CN 114552183A
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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
-
- 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 XKu waveband radiator and an implementation method, belonging to the technical field of electromagnetic fields and microwaves, and comprising a reflection cavity, a horn body, a convex edge choking shaping ring groove, an impedance harmonizing section, a back cover plate, a radio frequency socket, a low impedance coupling section, a linear gradual transition section, a ridge straight section and ridge step jumping; electromagnetic signals are input from the radio frequency socket and excited in the horn body to be aligned with TE after passing through the impedance harmonic section10A mold for radiating electromagnetic waves to an external space to form a spatially directed radiation; the convex edge choke groove restrains the radio frequency current of the outer wall of the antenna, plays a role in shaping a radiation pattern and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity and the back cover plate are used for ensuring unidirectional radiation; ridge straight section and straight line gradual change transition sectionThe step jump is adopted between the two steps. The invention solves the problem of miniaturization of the broadband electronic equipment antenna working at XKu wave band, adapts to the requirements of wide-bandwidth wave beam and polarization self-adaption of the system, and eliminates the problems of wave beam distortion and head distortion in the traditional mode.
Description
Technical Field
The invention relates to the technical field of electromagnetic fields and microwaves, in particular to an XKu waveband radiator and an implementation method thereof.
Background
The traditional four-ridge horn antenna adopts technical measures such as face-to-face ridge eversion (face-to-face matching type) or index gradual change and the like to realize broadband. These technical measures not only make it difficult to solve the technical problems of miniaturization and beam shaping of the wide bandwidth beam antenna, but also cause a performance defect (the degree of beam distortion varies with frequency) that the beam is severely distorted above the X-band.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an XKu waveband radiator and an implementation method thereof, which solve the problem of miniaturization of a broadband electronic equipment antenna working in a XKu waveband, adapt to the requirements of system broadband wide wave beams and polarization self-adaption and eliminate the problems of wave beam distortion and head distortion in the traditional mode.
The purpose of the invention is realized by the following scheme:
an XKu wave band radiator comprises a reflection cavity, a horn body, a convex edge choking shaping ring groove, an impedance harmonizing section, a back cover plate, a radio frequency socket, a low impedance coupling section, a linear gradual transition section, a ridge straight section and ridge step jumping; electromagnetic signals are input from the radio frequency socket and excited in the horn body to be aligned with TE after passing through the impedance harmonic section10A mold for radiating electromagnetic waves to an external space to form a spatially directed radiation; the convex edge choke groove restrains the radio frequency current of the outer wall of the antenna, shapes the radiation pattern and compresses the bandwidth of the standing wave coefficient of the antenna(ii) a The reflecting cavity and the back cover plate are used for ensuring unidirectional radiation; ridge step jumping is adopted between the ridge straight section and the linear gradual transition section, and the linear gradual transition section and the ridge step jumping are used for space impedance matching after the length of the horn body is compressed; the low impedance coupling segment and the impedance reconciliation segment combine to achieve a broadband feed structure.
Furthermore, the groove depth of the convex edge choking shaping ring groove is larger than 1/4 low-frequency end wavelength, and the groove width is selected from the range of 1/15-1/8 low-frequency end wavelength.
Further, the size of the jumping of the ridge step is selected within the range of 1-3 mm.
Furthermore, the reflecting cavity, the horn body and the convex edge choking shaping ring groove are of an integral structure.
Further, the length of the linear gradual transition section is controlled within the range of 0.5-1 low-frequency end wavelength.
Further, the length of the ridge straight 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 harmonic section is controlled within the range of 0.3-0.45 equivalent wavelength of the high-frequency end.
Further, step jumping is directly 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 size of the inner aperture of the horn body 2 is controlled to be 0.40-0.55 low-frequency end wavelength.
Further, the impedance reconciliation section is implemented by a coaxial line.
A method of implementing an XKu band radiator as claimed in any preceding claim, comprising the steps of: controlling the TEM mode characteristic impedance of the ridge straight section within the range of 80-120 ohms, and controlling the TEM mode characteristic impedance of the impedance harmonic section within the range of 60-80 ohms.
The beneficial effects of the invention include:
in the embodiment of the invention, the convex edge choke groove is added on the opening 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 mode characteristic impedance of the straight section between ridges is controlled to be 80-120 ohms, so that the problem of high-frequency beam head distortion existing in the traditional design mode for a long time is solved.
In the embodiment of the invention, the linear transition of the ridge and the step jump are combined to solve the problem of broadband matching caused by the longitudinal size compression of the antenna and eliminate the problem of severe fluctuation of impedance-frequency characteristics caused by the size compression of the antenna;
in the embodiment of the invention, the impedance harmonic section is used for harmonic the impedance frequency characteristic of the antenna, so that the impedance matching problem of the antenna and a rear-end feed transmission line (TEM mode characteristic impedance of 50 ohms) is solved. The antenna is arranged in a mode of 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 present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
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 of an embodiment of the present invention (F2/F1: 3: 1);
FIG. 3 is a radiation pattern of an embodiment of the present invention (F1; dashed line: E face; solid line: H face);
FIG. 4 is a radiation pattern of an embodiment of the present invention (F0; dashed line: E face; solid line: H face);
FIG. 5 is a radiation pattern of an embodiment of the present invention (F2; dashed line: E face; solid line: H face);
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 choking shaping ring groove, a 2-loudspeaker body, a 3-back cover plate, a 4-radio frequency socket, a 5-impedance harmonic section, a 6-low impedance coupling section, a 7-reflection cavity, an 8-ridge flat section, a 9-linear gradual transition section and a 10-ridge step jump.
Detailed Description
All features disclosed in all embodiments in this specification, or all methods or process steps implicitly disclosed, may be combined and/or expanded, or substituted, in any way, except for mutually exclusive features and/or steps.
The technical idea, the technical problems to be solved, the working principle, the working process and the advantageous effects of the present invention will be fully described in further detail with reference to fig. 1a, 1b and 2 to 7.
The embodiment of the invention aims to solve the problems in the background and provides an XKu (namely X/Ku) wave band contraction type four-ridge radiator, wherein a horn body 2 is the four-ridge radiator, a linear gradual transition section 9 is the four-ridge radiator, and the basic principle is as follows: electromagnetic signals are input from the radio frequency socket and excited in the four-ridge horn body to calibrate TE after passing through the impedance harmonic section10And a mode for radiating electromagnetic waves to an external space to form spatially directed radiation.
The convex edge choke groove restrains the radio frequency current of the outer wall of the antenna, plays a role in shaping a radiation pattern and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the function of the reflecting cavity and the back cover plate ensures unidirectional radiation; the purpose of the ridge straight line gradual transition section and the step jumping is the space impedance matching problem after the length of the horn body is compressed; the low impedance coupling segment and the impedance reconciliation segment combine to achieve a broadband feed structure.
By adopting the embodiment completed by the invention, the bandwidth of the standing wave coefficient (the standing wave coefficient is better than 2.5) reaches 3: 1. at a temperature of 3.0: 1, the radiation pattern presents axial symmetry within the working bandwidth range, and the defects of beam distortion, pointing, head tilting and the like of the traditional implementation mode are eliminated. Typical performance is shown in fig. 2-7.
Example 1
An XKu wave band radiator is disclosed, as shown in fig. 1a and fig. 1b, comprising a reflection cavity 7, a horn 2, a convex edge choke shaping ring groove 1, an impedance harmonizing section 5, a back cover plate 3, a radio frequency socket 4, a low impedance coupling section 6, a straight line gradual transition section 9, a ridge straight section 8, and a ridge step jump 10;
an electromagnetic signal is input from the radio frequency socket 4,after passing through the impedance tuning section 5, the excitation of the reference TE in the horn 210A mold for radiating electromagnetic waves to an external space to form a spatially directed radiation; the convex edge choke ring groove 1 restrains the radio frequency current of the outer wall of the antenna, plays a role in shaping a radiation pattern and simultaneously compresses the bandwidth of the standing wave coefficient of the antenna; the reflecting cavity 7 and the back cover plate 3 have the function of ensuring 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 are used for space impedance matching after the length of the horn body is compressed; the low impedance coupling section 6 and the impedance reconciliation section 5 combine to achieve a broadband feed structure.
Example 2
On the basis of the embodiment 1, the groove depth of the convex edge choke shaping ring groove 1 is larger than 1/4 low-frequency end wavelength, and the groove width is selected from the range of 1/15-1/8 low-frequency end wavelength.
Example 3
On the basis of the embodiment 1, the size of the ridge step jump 10 is selected within the range of 1-3 mm.
Example 4
On the basis of the embodiment 1, the reflecting cavity 7, the horn body 2 and the convex edge choke flow 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 within the wavelength range of 0.5-1 low-frequency end.
Example 6
On the basis of 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 the feed probe.
Example 7
On the basis of the embodiment 1, the length of the impedance harmonizing section 5 is controlled within the range of 0.3-0.45 equivalent wavelength of the high frequency end.
Example 8
On the basis of the embodiment 1, the horn 2 and the reflecting cavity 7 are directly stepped and jumped; the side length of the reflecting cavity 7 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 size of the inner aperture 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 matching section 5 is implemented by a coaxial line.
Example 10
An implementation method of the XKu waveband radiator as in any one of embodiments 1 to 9, comprising the steps of: controlling the mode characteristic impedance of the ridge straight section 8TEM within the range of 80-120 ohm, and controlling the mode characteristic impedance of the impedance harmonic section 5TEM within the range of 60-80 ohm.
In other technical features in this embodiment, those skilled in the art can flexibly select the technical features according to actual situations to meet different specific actual requirements. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known components, structures or parts are not described in detail in order to avoid obscuring the present invention, and the technical scope of the present invention is defined by the claims.
Other embodiments than the above examples may be devised by those skilled in the art based on the foregoing disclosure, or by adapting and using knowledge or techniques of the relevant art, and features of various embodiments may be interchanged or substituted and such modifications and variations that may be made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the following claims.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are used in a generic sense as is understood by those skilled in the art. For example, the components 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 inside two elements, and the like, and for those skilled in the art, specific meanings of the above terms in the present invention may be understood according to specific situations, that is, the expression of the language used herein may flexibly correspond to the implementation of the actual technology, and the expression of the language used in the specification (including the drawings) of the present invention does not constitute any single restrictive interpretation of the claims.
Modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, which should be limited only by the appended claims. In the previous description, numerous specific details were 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: it is not necessary to employ these specific details to practice the present 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. An XKu waveband radiator is characterized by comprising a reflection cavity (7), a horn body (2), a convex edge choking shaping ring groove (1), an impedance harmonizing 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 and straight section (8) and a ridge step jump section (10);
electromagnetic signals are input from the radio frequency socket (4) and excited in the horn body (2) to be aligned with TE after passing through the impedance harmonic section (5)10A mold for radiating electromagnetic waves to an external space to form a spatially directed radiation; the convex edge choking ring groove (1) inhibits the radio frequency current of the outer wall of the antenna, plays a role in shaping a radiation pattern and simultaneously compresses the standing wave coefficient bandwidth of the antenna; the reflecting cavity (7) and the back cover plate (3) have the function of ensuring unidirectional radiation; ridge and step jump (10) is adopted between the ridge straight section (8) and the linear gradual transition section (9), and the linear gradual transition section (9) and the ridge and step jump (10) are used for space impedance matching after the length of the horn body is compressed; the low-impedance coupling section (6) and the impedance harmonic section (5) are combined to realize a broadband feed structure.
2. The XKu waveband radiator of claim 1, characterized in that, the protruding edge choke shaping ring groove (1) has a groove depth larger than 1/4 low frequency end wavelength and a groove width selected from 1/15-1/8 low frequency end wavelength range.
3. XKu-band radiator according to claim 1, characterized in that the size of the ridge step jump (10) is chosen in the range of 1-3 mm.
4. XKu-band radiator according to claim 1, characterized in that the reflecting cavity (7), the horn (2) and the lip choke-shaping ring groove (1) are of one-piece construction.
5. The XKu waveband radiator of claim 1, characterized in that the length of the straight gradual transition section (9) is controlled to be in the range of 0.5-1 low frequency end wavelengths.
6. The XKu band radiator of claim 1, wherein the length of the ridged straight section (8) is extended by 1-2 mm based on the requirement of feeding probe installation.
7. The XKu-band radiator of claim 1, wherein the impedance tuning section (5) has a length controlled within 0.3-0.45 HF-end equivalent wavelength range.
8. XKu-band radiator according to claim 1, characterized in that the horn (2) jumps directly in steps with 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 of the reflecting cavity is controlled to be 0.3-0.4 high-frequency end wavelength; the size of the inner aperture of the horn body (2) is controlled to be 0.40-0.55 low-frequency end wavelength.
9. XKu-band radiator according to claim 1, characterized in that the impedance-tuning section (5) is implemented as a coaxial line.
10. A method of implementing an XKu band radiator as claimed in any one of claims 1 to 9, including the steps of: the TEM mode characteristic impedance of the ridge straight section (8) is controlled within the range of 80-120 ohms, and the TEM mode characteristic impedance of the impedance harmonic section (5) is controlled within 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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Cited By (2)
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| CN115101937A (en) * | 2022-06-20 | 2022-09-23 | 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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| 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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