CN108039583B - High-frequency-band millimeter wave feed source - Google Patents
High-frequency-band millimeter wave feed source Download PDFInfo
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- CN108039583B CN108039583B CN201711050840.9A CN201711050840A CN108039583B CN 108039583 B CN108039583 B CN 108039583B CN 201711050840 A CN201711050840 A CN 201711050840A CN 108039583 B CN108039583 B CN 108039583B
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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
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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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Abstract
The invention belongs to the field of antenna feed systems, and particularly relates to a high-frequency-band millimeter wave feed source which comprises a reducing section, a variable-mode section, a transition section and a radiating section which are sequentially arranged and mutually abutted; the variable diameter section, the variable mold section, the transition section and the radiation section are all cylindrical, and the inner diameters of the variable diameter section, the variable mold section, the transition section and the radiation section are gradually increased; the transition section comprises a variable frequency band and a variable angle section, the variable frequency section is arranged close to the variable mode section, and the variable angle section is arranged close to the radiation section; the inner diameters of the variable frequency band and the variable angle band are gradually increased in sequence. The high-frequency-band millimeter wave feed source provided by the invention has the advantages of small precision error and high production qualification rate, reduces the production cost of the high-frequency-band millimeter wave feed source, enhances the gain of the high-frequency-band millimeter wave feed source, and improves the working performance of the high-frequency-band millimeter wave feed source.
Description
Technical Field
The invention belongs to the field of antenna feed systems, and particularly relates to a high-frequency-band millimeter wave feed source.
Background
The high-frequency-band millimeter wave feed source is used as a core device of an antenna feed system of a millimeter wave radar and a microwave radiometer, is mainly used as a primary radiator of an antenna, provides effective irradiation for the antenna, and ensures that the polarization directions are consistent. Therefore, the high-frequency-band millimeter wave feed source is an important device for determining the electrical characteristics and the frequency band of the antenna, so as to realize the gain as high as possible.
The high-frequency-band millimeter wave feed source, particularly a corrugated horn with a loading groove, is complex in structure and not easy to form integrally, so that the conventional corrugated horn structure is generally formed integrally by electrochemical corrosion or assembled by adopting two semicircular rings, and has the defects of high rejection rate, large precision error, low qualification rate and high production cost.
Disclosure of Invention
According to the problems in the prior art, the invention provides the high-frequency band millimeter wave feed source which has the advantages of small precision error and high production qualification rate, reduces the production cost of the high-frequency band millimeter wave feed source, enhances the gain of the high-frequency band millimeter wave feed source and improves the working performance of the high-frequency band millimeter wave feed source.
The invention adopts the following technical scheme:
a high-frequency section millimeter wave feed source comprises a reducing section, a variable-mode section, a transition section and a radiation section which are sequentially arranged and mutually abutted; the inside diameters of the variable diameter section, the variable mold section, the transition section and the radiation section are gradually increased.
Preferably, the transition section comprises a variable frequency band and a variable angle band, the variable frequency band is arranged close to the variable mode band, and the variable angle band is arranged close to the radiation band; the inner diameters of the variable frequency band and the variable angle band are gradually increased in sequence.
Preferably, the axes of the variable diameter section, the variable module section, the variable frequency section, the variable angle section and the radiation section are all coincident with each other; the diameter-changing section and the variable-mould section are fixed in the small-diameter sleeve, the radiation section is fixed in the large-diameter sleeve, and the transition section is fixed in the middle sleeve between the small-diameter sleeve and the large-diameter sleeve; the small-diameter sleeve and the middle sleeve are fixedly connected, and the large-diameter sleeve and the middle sleeve are fixedly connected; the outer side end of the small-diameter sleeve is provided with a small-diameter end cover fixedly connected with the small-diameter sleeve, and the outer side end of the large-diameter sleeve is provided with a large-diameter end cover fixedly connected with the large-diameter sleeve; the outside end of the reducing section is abutted against the inner side face of the small-diameter end cover, and the outside end of the radiating section is abutted against the inner side face of the large-diameter end cover.
Further preferably, the small-diameter end cover and the large-diameter end cover are both circular rings, the inner diameter of the small-diameter end cover is smaller than that of the small-diameter sleeve, and the inner diameter of the large-diameter end cover is smaller than that of the large-diameter sleeve.
More preferably, the inner diameter of the reducing section is gradually increased from the outer end of the reducing section to a position close to the variable-die section, and the outer end of the reducing section is clamped in the inner ring of the small-diameter end cover; the outer side end of the reducing section is provided with a plurality of connecting holes connected with the waveguide, and the outer surface of the middle position of the reducing section is provided with an annular groove.
Preferably, the variable-diameter section comprises at least one annular loading wafer, the annular loading wafer is annular, an inner ring is arranged on the radial inner side of the annular loading wafer, a boss protruding towards the variable-diameter section is arranged on the inner ring, the end face of the boss, facing towards the variable-diameter section, is lower than the end face of the corresponding side of the annular loading wafer where the boss is located, and the end face of the boss, far away from the variable-diameter section, is flush with the end face of the corresponding side of the annular loading wafer; when the ring loading circular sheets are arranged in a plurality of numbers, the height of the lug boss on the ring loading circular sheet from the position close to the reducing section to the position far away from the reducing section is gradually reduced, and the inner diameter of the lug boss is gradually increased from one side of the reducing section to one side far away from the reducing section.
Further preferably, the variable frequency band, the variable angle band and the radiation section respectively comprise at least one corrugated groove wafer, and the corrugated groove wafer is annular; the annular sheet extending out along the radial inner side is arranged on the inner ring surface of the annular corrugated groove wafer, the annular sheet is arranged on one side, away from the variable mold section, of the corrugated groove wafer, and the end surface of one side, away from the variable mold section, of the annular sheet is flush with the end surface of the corresponding side of the corrugated groove wafer; the inner diameter of the ring piece is gradually increased from one side of the variable-mould section to one side far away from the variable-mould section; the corrugated groove wafer close to the variable-mode section abuts against the end face of the small-diameter sleeve, and the corrugated groove wafer close to the radiation section abuts against the radiation section; the corrugated groove wafer close to the variable-angle section is abutted against the end face of the middle sleeve, and the corrugated groove wafer close to the large-diameter end cover is clamped in the inner ring of the large-diameter end cover.
Still further preferably, all be connected through the tang cooperation between minor diameter end cover and the minor diameter sleeve, between minor diameter sleeve and the middle sleeve, between middle sleeve and the major diameter sleeve, between major diameter sleeve and the major diameter end cover, just all pass through connecting piece fixed connection between minor diameter end cover and the minor diameter sleeve, between minor diameter sleeve and the middle sleeve, between middle sleeve and the major diameter sleeve, between major diameter sleeve and the major diameter end cover.
Still further preferably, the diameter-changing section, the mold-changing section, the frequency-changing section, the angle-changing section, the radiation section, the small-diameter sleeve, the large-diameter sleeve, the middle sleeve, the small-diameter end cover and the large-diameter end cover are all made of H62 brass.
The invention has the beneficial effects that:
1) the high-frequency section millimeter wave feed source comprises a reducing section, a variable-mode section, a variable-frequency section, a variable-angle section and a radiation section, wherein the reducing section and the variable-mode section are fixed in a small-diameter sleeve, the radiation section is fixed in a large-diameter sleeve, and a transition section is fixed in a middle sleeve positioned between the small-diameter sleeve and the large-diameter sleeve; the small-diameter sleeve and the middle sleeve are fixedly connected, and the large-diameter sleeve and the middle sleeve are fixedly connected; the outer side end of the small-diameter sleeve is provided with a small-diameter end cover fixedly connected with the small-diameter sleeve, and the outer side end of the large-diameter sleeve is provided with a large-diameter end cover fixedly connected with the large-diameter sleeve; the outside end of the reducing section is abutted against the inner side face of the small-diameter end cover, and the outside end of the radiating section is abutted against the inner side face of the large-diameter end cover. The feed source structure of the invention converts the high processing precision requirement of the cavity in the feed source into the positioning precision and the assembling precision of the sleeve, and a common numerical control machine can meet the processing requirement, thereby reducing the equipment requirement of feed source processing, improving the processing precision and the qualification rate of the feed source and reducing the production cost of the high-frequency-band millimeter wave feed source.
2) In the high-frequency-band millimeter wave feed source, the ring loading wafer is annular, an inner ring is arranged on the radial inner side of the annular ring loading wafer, and a boss protruding towards the reducing section is arranged on the inner ring; the corrugated groove circular sheet is annular, and an annular sheet extending out along the radial inner side is arranged on the inner annular surface of the annular corrugated groove circular sheet. Structural arrangement of ring-loading wafers in the mode-changing section to align TE in the waveguide11Modular to HE conversion11Without causing significant mismatch in the modeUnnecessary obvious excitation, and the corrugated groove disk realizes field angle conversion, groove depth and groove distance conversion between the radiation section and the variable-mode section, so that the structural arrangement of the ring loading disk and the corrugated groove disk enhances the gain of the high-frequency section millimeter wave feed source and improves the working performance of the high-frequency section millimeter wave feed source.
3) In the high-frequency section millimeter wave feed source, the small-diameter end cover and the small-diameter sleeve, the small-diameter sleeve and the middle sleeve, the middle sleeve and the large-diameter sleeve are connected in a matched mode through the seam allowances, and the small-diameter end cover and the small-diameter sleeve, the small-diameter sleeve and the middle sleeve, the middle sleeve and the large-diameter sleeve are fixedly connected through the connecting pieces. In the invention, the small-diameter end cover and the small-diameter sleeve, the small-diameter sleeve and the middle sleeve, the middle sleeve and the large-diameter sleeve are connected in a matched manner through the seam allowances, so that the radial limit between the end cover and the sleeve and between the sleeve and the sleeve is realized; meanwhile, the end cover and the sleeve are fixedly connected through the screws, so that the axial limiting and fixing between the end cover and the sleeve and between the sleeve and the sleeve are realized, and the sleeve can well limit and fix the reducing section, the variable-mode section, the variable-frequency section, the variable-angle section and the radiation section.
4) In the high-frequency-band millimeter wave feed source, the machining difficulty and the precision requirement of each part of the whole feed source are general, the precision of the whole feed source is ensured through the positioning holes and the limiting matching surfaces of each part, electrochemical corrosion and special machine tool machining are not needed, meanwhile, the machining mode avoids welding and electrochemical corrosion machining, the assembly form is threaded fastening assembly, the assembly is convenient, and therefore the machining cost of the whole feed source is greatly reduced.
Drawings
Fig. 1 is a first three-dimensional structure diagram of the high-band millimeter wave feed source of the present invention.
Fig. 2 is a second perspective structure diagram of the high-band millimeter wave feed source of the present invention.
Fig. 3a and 3b are a sitting view and a right view of the high-frequency band millimeter wave feed source of the invention, respectively.
Fig. 4 is a structural cross-sectional view of the high-band millimeter wave feed source of the present invention.
Fig. 5 is a schematic view of the installation of the high-band millimeter wave feed source and the square external interface of the invention.
FIG. 6 is a simulation diagram of the high-band millimeter wave feed source of the present invention at the frequency band of 51 GHz.
FIG. 7 is a simulation diagram of the high-band millimeter wave feed source of the present invention at the 59GHz band.
Reference numerals: 1-diameter changing section, 2-variable mould section, 3-transition section, 4-radiation section, 5-small diameter sleeve, 6-large diameter sleeve, 7-middle sleeve, 8-small diameter end cover, 9-large diameter end cover, 11-connecting hole, 12-annular groove, 21-annular loading wafer, 31-variable frequency section, 32-variable angle section, 33-corrugated groove wafer, 221-boss and 331-annular wafer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 2, fig. 3a, fig. 3b, and fig. 4, a high-frequency millimeter wave feed source includes a diameter-variable section 1, a mode-variable section 2, a transition section 3, and a radiation section 4, which are sequentially arranged and abutted against each other; the diameter-changing section 1, the variable-mould section 2, the transition section 3 and the radiation section 4 are all cylindrical, and the inner diameters of the diameter-changing section 1, the variable-mould section 2, the transition section 3 and the radiation section 4 are gradually increased.
The transition section 3 comprises a variable frequency section 31 and a variable angle section 32, the variable frequency section 31 is arranged close to the variable mode section 2, and the variable angle section 32 is arranged close to the radiation section 4; the inner diameters of the variable frequency band 31 and the variable angle band 32 are gradually increased.
The axes of the diameter-changing section 1, the mode-changing section 2, the frequency-changing section 31, the angle-changing section 32 and the radiation section 4 are all overlapped; the diameter-changing section 1 and the variable-mode section 2 are fixed in a small-diameter sleeve 5, the radiation section 4 is fixed in a large-diameter sleeve 6, and the transition section 3 is fixed in a middle sleeve 7 positioned between the small-diameter sleeve 5 and the large-diameter sleeve 6; the small-diameter sleeve 5 and the middle sleeve 7 as well as the large-diameter sleeve 6 and the middle sleeve 7 are fixedly connected; the outer side end of the small-diameter sleeve 5 is provided with a small-diameter end cover 8 fixedly connected with the small-diameter sleeve, and the outer side end of the large-diameter sleeve 6 is provided with a large-diameter end cover 9 fixedly connected with the large-diameter sleeve; the outer side end of the diameter-variable section 1 abuts against the inner side face of the small-diameter end cover 8, and the outer side end of the radiation section 4 abuts against the inner side face of the large-diameter end cover 9.
The small-diameter end cover 8 and the large-diameter end cover 9 are both circular rings, the inner diameter of the small-diameter end cover 8 is smaller than that of the small-diameter sleeve 5, and the inner diameter of the large-diameter end cover 9 is smaller than that of the large-diameter sleeve 6.
The inner diameter of the reducing section 1 is gradually increased from the outer side end to the position close to the variable die section 2, and the outer side end of the reducing section 1 is clamped in the inner ring of the small-diameter end cover 8; the outer side end of the variable diameter section 1 is provided with a plurality of connecting holes 11 connected with the waveguide, and the outer surface of the middle position of the variable diameter section 1 is provided with an annular groove 12.
The variable-diameter section 2 comprises at least one ring loading wafer 21, the ring loading wafer 21 is annular, an inner ring is arranged on the radial inner side of the annular ring loading wafer 21, a boss 211 protruding towards the variable-diameter section 1 is arranged on the inner ring, the end face of one side, facing the variable-diameter section 1, of the boss 211 is lower than the end face of the corresponding side, where the boss 211 is located, of the ring loading wafer 21, and the end face of one side, far away from the variable-diameter section 1, of the boss 211 is flush with the end face of the corresponding side of the ring loading wafer 21; when the ring loading disc 21 is provided in plural, the height of the boss 211 on the ring loading disc 21 from the side close to the reducing section 1 to the side far from the reducing section 1 is gradually reduced, and the inner diameter of the boss 211 is gradually increased from the side of the reducing section 1 to the side far from the reducing section 1.
The variable frequency band 31, the variable angle band 32 and the radiation section 4 respectively comprise at least one corrugated groove wafer 33, and the corrugated groove wafer 33 is annular; the annular sheet 331 extending from the inner side in the radial direction is arranged on the inner annular surface of the annular corrugated groove wafer 33, the annular sheet 331 is arranged on one side, far away from the variable mould section 2, of the corrugated groove wafer 33, and the end surface of one side, far away from the variable mould section 2, of the annular sheet 331 is flush with the end surface of the corresponding side of the corrugated groove wafer 33; the inner diameter of the ring piece 331 is gradually increased from one side of the mould changing section 2 to one side far away from the mould changing section 2; the corrugated groove disk 33 close to the variable-mode section 2 is abutted against the end face of the small-diameter sleeve 5, and the corrugated groove disk 33 close to the radiation section 4 is abutted against the radiation section 4; the corrugated groove disk 33 close to the angle-changing section 32 is abutted against the end face of the middle sleeve 7, and the corrugated groove disk 33 close to the large-diameter end cover 9 is clamped in the inner ring of the large-diameter end cover 9.
Between minor diameter end cover 8 and the minor diameter sleeve 5, between minor diameter sleeve 5 and the middle sleeve 7, between middle sleeve 7 and the major diameter sleeve 6, all be connected through the tang cooperation between major diameter sleeve 6 and the major diameter end cover 9, just all through connecting piece fixed connection between minor diameter end cover 8 and the minor diameter sleeve 5, between minor diameter sleeve 5 and the middle sleeve 7, between middle sleeve 7 and the major diameter sleeve 6, between major diameter sleeve 6 and the major diameter end cover 9.
The diameter-changing section 1, the variable-mode section 2, the frequency-changing section 31, the angle-changing section 32, the radiation section 4, the small-diameter sleeve 5, the large-diameter sleeve 6, the middle sleeve 7, the small-diameter end cover 8 and the large-diameter end cover 9 are all made of H62 brass.
The antenna heating device of the present invention will be described below by way of example.
Example 1:
as shown in fig. 5, according to the difference of the corrugated grooves inside the feed source, the variable-mode section 2, the variable-frequency section 31, the variable-angle section 32 and the radiation section 4 of the feed source are equally divided into independent circular sheets, that is, the variable-mode section 2 is divided into a plurality of ring loading circular sheets 21, and the variable-frequency section 31, the variable-angle section 32 and the radiation section 4 are equally divided into corrugated groove circular sheets 33; then fixing the diameter-changing section 1 and the variable-mould section 2 in the small-diameter sleeve 5, fixing the frequency-changing section 31 and the angle-changing section 32 in the middle sleeve 7, and fixing the radiation section 4 in the large-diameter sleeve 6, thereby completing the radial limiting and fixing of the diameter-changing section 1, the variable-mould section 2, the frequency-changing section 31, the angle-changing section 32 and the radiation section 4; and then the small-diameter sleeve 5 and the middle sleeve 7, and the middle sleeve 7 and the large-diameter sleeve 6 are fixedly connected through screws, one side end close to the small-diameter sleeve 5 is fixed in a limiting mode through a small-diameter end cover 8, and one side end close to the large-diameter sleeve 6 is fixed in a limiting mode through a large-diameter end cover 9, so that the limiting and fixing of the variable-diameter section 1, the variable-mode section 2, the variable-frequency section 31, the variable-angle section 32 and the radiation section 4 in the axial direction are completed.
When the feed source works, the feed source is arranged in a square outer interface frame through the mounting holes on the annular convex blocks among the small-diameter end cover 8, the small-diameter sleeve 5, the middle sleeve 7, the large-diameter sleeve 6 and the large-diameter end cover 9, and then the feed source is connected with the waveguide through the connecting hole 11 on the outer side end of the reducer section 1; the variable-diameter section 1 is used for realizing good matching between the variable-mode section 2 and the waveguide, and the variable-mode section 2 is used for enabling TE in the waveguide11Modular to HE conversion11Modes without causing significant mismatch or unnecessary significant excitation, the frequency conversion section 31 and the angle conversion section 32 are used to realize the field angle conversion, the groove depth and the groove distance conversion between the radiation section and the mode conversion section, the radiation section mainly determines the main mode HE11The main polarization characteristic of the mode.
As shown in fig. 6 and 7, fig. 6 and 7 are simulation diagrams of the high-band millimeter wave feed source of the present invention at the frequency bands of 51GHz and 59GHz, respectively. From fig. 6 and fig. 7, the gain of the high-band millimeter wave feed of the present invention is 23.1dBi in the 51GHz band, and 24.3dBi in the 59GHz band. The gains of the conventional feed source in the same frequency band in the frequency bands of 51GHz and 59GHz are about 21dBi and 23 dBi; therefore, compared with the conventional feed source, the gain of the high-frequency-band millimeter wave feed source is improved by 1-2 dBi under the frequency bands of 51GHz and 59 GHz.
In conclusion, the high-frequency-band millimeter wave feed source has the advantages of small precision error and high production qualification rate, reduces the production cost of the high-frequency-band millimeter wave feed source, enhances the gain of the high-frequency-band millimeter wave feed source, and improves the working performance of the high-frequency-band millimeter wave feed source.
Claims (6)
1. The utility model provides a high band millimeter wave feed which characterized in that: comprises a variable diameter section (1), a variable mold section (2), a transition section (3) and a radiation section (4) which are sequentially arranged and mutually abutted; the variable-diameter section (1), the variable-mold section (2), the transition section (3) and the radiation section (4) are all cylindrical, and the inner diameters of the variable-diameter section (1), the variable-mold section (2), the transition section (3) and the radiation section (4) are gradually increased;
the transition section (3) comprises a variable frequency section (31) and a variable angle section (32), the variable frequency section (31) is arranged close to the variable mode section (2), and the variable angle section (32) is arranged close to the radiation section (4); the inner diameters of the variable frequency band (31) and the variable angle band (32) are gradually increased in sequence;
the axes of the diameter-changing section (1), the variable-module section (2), the frequency-converting section (31), the angle-changing section (32) and the radiation section (4) are all overlapped; the diameter-variable section (1) and the variable-mould section (2) are fixed in the small-diameter sleeve (5), the radiation section (4) is fixed in the large-diameter sleeve (6), and the transition section (3) is fixed in the middle sleeve (7) between the small-diameter sleeve (5) and the large-diameter sleeve (6); the small-diameter sleeve (5) and the middle sleeve (7) and the large-diameter sleeve (6) and the middle sleeve (7) are fixedly connected; the outer side end of the small-diameter sleeve (5) is provided with a small-diameter end cover (8) fixedly connected with the small-diameter sleeve, and the outer side end of the large-diameter sleeve (6) is provided with a large-diameter end cover (9) fixedly connected with the large-diameter sleeve; the outer side end of the diameter-variable section (1) abuts against the inner side face of the small-diameter end cover (8), and the outer side end of the radiation section (4) abuts against the inner side face of the large-diameter end cover (9);
the variable frequency band (31), the variable angle band (32) and the radiation section (4) respectively comprise at least one corrugated groove wafer (33), and the corrugated groove wafer (33) is annular; the ring sheet (331) extending out from the inner side in the radial direction is arranged on the inner ring surface of the annular corrugated groove wafer (33), the ring sheet (331) is arranged on one side, away from the variable die section (2), of the corrugated groove wafer (33), and the end surface of one side, away from the variable die section (2), of the ring sheet (331) is flush with the end surface of the corresponding side of the corrugated groove wafer (33) where the ring sheet (331) is located; the inner diameter of the ring piece (331) is gradually increased from one side of the variable-mould section (2) to one side far away from the variable-mould section (2); the corrugated groove wafer (33) close to the variable-mode section (2) abuts against the end face of the small-diameter sleeve (5), and the corrugated groove wafer (33) close to the radiation section (4) abuts against the radiation section (4); the corrugated groove disk (33) close to the angle-changing section (32) is abutted against the end face of the middle sleeve (7), and the corrugated groove disk (33) close to the large-diameter end cover (9) is clamped in the inner ring of the large-diameter end cover (9).
2. The high-band millimeter wave feed source of claim 1, wherein: the small-diameter end cover (8) and the large-diameter end cover (9) are both circular rings, the inner diameter of the small-diameter end cover (8) is smaller than that of the small-diameter sleeve (5), and the inner diameter of the large-diameter end cover (9) is smaller than that of the large-diameter sleeve (6).
3. The high-band millimeter wave feed source of claim 2, wherein: the inner diameter of the reducing section (1) is gradually increased from the outer end of the reducing section to the position close to the variable die section (2), and the outer end of the reducing section (1) is clamped in the inner ring of the small-diameter end cover (8); the outer side end of the reducing section (1) is provided with a plurality of connecting holes (11) connected with the waveguide, and the outer surface of the middle position of the reducing section (1) is provided with an annular groove (12).
4. The high-band millimeter wave feed source of claim 3, wherein: the variable-diameter section (2) comprises at least one ring loading wafer (21), the ring loading wafer (21) is annular, an inner ring is arranged on the radial inner side of the annular ring loading wafer (21), a boss (211) protruding towards the variable-diameter section (1) is arranged on the inner ring, the end face of one side, facing towards the variable-diameter section (1), of the boss (211) is lower than the end face of the corresponding side, facing towards the ring loading wafer (21), of the boss (211), and the end face of one side, far away from the variable-diameter section (1), of the boss (211) is flush with the end face of the corresponding side of the ring loading wafer (21); when the ring loading discs (21) are arranged in a plurality of numbers, the height of the lug boss (211) on the ring loading disc (21) from the position close to the reducing section (1) to the position far away from the reducing section (1) is gradually reduced, and the inner diameter of the lug boss (211) is gradually increased from one side of the reducing section (1) to the side far away from the reducing section (1).
5. The high-band millimeter wave feed source of claim 4, wherein: between minor diameter end cover (8) and minor diameter sleeve (5), between minor diameter sleeve (5) and middle sleeve (7), between middle sleeve (7) and major diameter sleeve (6), all be connected through the tang cooperation between major diameter sleeve (6) and major diameter end cover (9), just between minor diameter end cover (8) and minor diameter sleeve (5), between minor diameter sleeve (5) and middle sleeve (7), between middle sleeve (7) and major diameter sleeve (6), all through connecting piece fixed connection between major diameter sleeve (6) and major diameter end cover (9).
6. The high-band millimeter wave feed source of claim 5, wherein: the variable diameter section (1), the variable mould section (2), the variable frequency section (31), the variable angle section (32), the radiation section (4), the small diameter sleeve (5), the large diameter sleeve (6), the middle sleeve (7), the small diameter end cover (8) and the large diameter end cover (9) are all made of H62 brass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711050840.9A CN108039583B (en) | 2017-10-31 | 2017-10-31 | High-frequency-band millimeter wave feed source |
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| CN201711050840.9A CN108039583B (en) | 2017-10-31 | 2017-10-31 | High-frequency-band millimeter wave feed source |
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| CN108039583B true CN108039583B (en) | 2020-12-22 |
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