CN113161750A - Broadband dual-mode multi-step horn antenna - Google Patents
Broadband dual-mode multi-step horn antenna Download PDFInfo
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- CN113161750A CN113161750A CN202110259956.3A CN202110259956A CN113161750A CN 113161750 A CN113161750 A CN 113161750A CN 202110259956 A CN202110259956 A CN 202110259956A CN 113161750 A CN113161750 A CN 113161750A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000035772 mutation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- 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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Abstract
The invention provides a broadband dual-mode multi-step horn antenna, which comprises a multi-step circular horn and a circular waveguide-rectangular waveguide conversion structure; the circular horn comprises a waveguide section, 6-level steps and a radiation section; the waveguide conversion structure comprises a three-level cavity; the waveguide conversion structure is in a round corner square shape, the waveguide section is cylindrical, and the cylindrical bottom surface is an inscribed circle of the round corner square; the waveguide segment is connected with the first cavity; the FBP220 flange structure is arranged on the periphery of the third cavity of the waveguide conversion structure to be connected with the feed rectangular waveguide conversion structure, the high-gain low-side lobe is obtained in 17-25GHz, the relative bandwidth is about 38%, the relative bandwidth is far greater than the working bandwidth of the traditional multi-mode horn, and the working bandwidth is close to that of a common corrugated horn; under the condition that the performance of the corrugated horn is the same as that of the corrugated horn, the structure is simpler, and the manufacturing difficulty and the manufacturing cost are lower.
Description
Technical Field
The invention belongs to the technical field of feed source antennas, and particularly relates to a broadband dual-mode multi-step horn antenna.
Background
The horn antenna is an antenna with wide application, and has the advantages of simple structure, wide frequency band, large power capacity, convenient adjustment and use and the like. However, the sidelobe levels of the feedhorn are typically high. Generally, for the feed with low sidelobe level requirement, the feed is mostly in the form of a corrugated horn, such as a satellite antenna feed, a reflector type antenna feed. But the length and depth of the corrugations are directly dependent on the operating frequency, and as the operating frequency increases, the required corrugation size becomes very small. Thus, high frequency corrugated horns are becoming increasingly difficult and expensive to manufacture.
In the same time as the birth of a corrugated horn, Potter proposed a dual-mode horn. The horn has many excellent properties similar to a corrugated horn, and is simple in structure and easier to manufacture than a corrugated horn. However, the working bandwidth of the horn is very narrow, so that the dual-mode horn can be adopted to replace the corrugated horn only under the condition of low bandwidth requirement.
Disclosure of Invention
The invention ensures the excellent performance of the dual-mode horn, expands the working bandwidth and the application range and provides the broadband dual-mode multi-step horn antenna.
The invention is realized by the following scheme:
a broadband dual-mode multi-step horn antenna comprises a multi-step circular horn and a circular waveguide-rectangular waveguide conversion structure;
the multi-step circular horn comprises a waveguide section 1, a first step 2, a second step 3, a third step 4, a fourth step 5, a fifth step 6, a sixth step 7 and a radiation section 8; the waveguide section 1 is connected with a first step 2, the first step 2 is connected with a second step 3, the second step 3 is connected with a third step 4, the third step 4 is connected with a fourth step 5, the fourth step 5 is connected with a fifth step 6, the fifth step 6 is connected with a sixth step 7, and the sixth step 7 is connected with a radiation section 8;
the circular waveguide-rectangular waveguide conversion structure comprises a first cavity 9, a second cavity 10 and a third cavity 11; the first cavity 9 is square, has the area equal to the area of the opening surface of the waveguide section 1, and is connected with the waveguide section 1; the second cavity is rectangular, and the side length is the average value of the sum of the short sides of the first cavity 9 and the third cavity 11; the third cavity 11 is rectangular and has the same inner dimension as the WR42 waveguide.
Further, the step widths of a first step 2, a second step 3, a third step 4, a fourth step 5, a fifth step 6 and a sixth step 7 of the circular horn are gradually increased, and the radius of the cylindrical cavity inside is gradually increased; the sixth step 7 is the same size as the end of the radiating section 8.
Furthermore, the first cavity (9), the second cavity (10) and the third cavity (11) of the waveguide conversion structure are all of round-angle structures, so that the matching effect is improved.
Furthermore, the waveguide conversion structure is in a shape of a rounded square, the waveguide section 1 is cylindrical, and the bottom surface of the cylindrical waveguide section is an inscribed circle of the rounded square; the waveguide section (1) is connected to the first cavity (9); and an FBP220 flange structure is arranged at the periphery of the third cavity (11) of the waveguide conversion structure and is used for connecting the rectangular waveguide conversion structure for feeding.
The invention has the beneficial effects
(1) According to the invention, through the multi-step abrupt change structure, the energy ratio and the phase relation of each mode in the loudspeaker can be more finely adjusted, and the working bandwidth of the loudspeaker is expanded;
(2) according to the invention, a high-order mode TM11 can be excited in the horn through the introduction of the mutation structure, the high-order mode is mixed with a main mode TE11 mode of the circular horn in a certain energy ratio and phase relationship, a uniform mouth surface field can be obtained on the mouth surface of the horn, and further a directional diagram of low side lobe equalization is obtained, and the energy ratio and the phase relationship can be changed by adjusting the size of the mutation structure;
(3) the antenna of the invention has high equalization level, and the 3dB wave beam width and the 10dB wave beam width on the two surfaces of the XOZ and the YOZ are almost equal;
(4) the invention obtains high-gain low side lobe in 17-25GHz, the relative bandwidth is about 38%, which is far larger than the working bandwidth of the traditional multi-mode horn and is close to the working bandwidth of the common corrugated horn; under the condition that the performance of the corrugated horn is the same as that of the corrugated horn, the structure is simpler, and the manufacturing difficulty and the manufacturing cost are lower.
Drawings
FIG. 1 is a sectional view of a horn section of a dual mode multi-step circular horn of the present invention;
FIG. 2 is a top view of a dual-mode circularly polarized circular horn waveguide transition section of the present invention;
FIG. 3 is a cross-sectional view of a waveguide transition section of a dual-mode multi-step circular horn in accordance with the present invention;
FIG. 4 shows the S11 parameter of the dual-mode multi-step circular horn of the present invention;
FIG. 5 is a gain of the dual mode multi-step horn of the present invention;
FIG. 6 is a side lobe level of the dual mode multi-step circular horn of the present invention;
fig. 7 is a far-field pattern of the dual-mode multi-step circular horn of the present invention, wherein (1) is a pattern at a frequency of 17GHZ, (2) is a pattern at a frequency of 19GHZ, (3) is a pattern at a frequency of 21GHZ, (4) is a pattern at a frequency of 23GHZ, and (5) is a pattern at a frequency of 25 GHZ;
fig. 8 is an alternative configuration of the present invention.
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.
A broadband dual-mode multi-step horn antenna comprises a multi-step circular horn and a circular waveguide-rectangular waveguide conversion structure;
the multi-step circular horn comprises a waveguide section 1, a first step 2, a second step 3, a third step 4, a fourth step 5, a fifth step 6, a sixth step 7 and a radiation section 8; the waveguide section 1 is connected with a first step 2, the first step 2 is connected with a second step 3, the second step 3 is connected with a third step 4, the third step 4 is connected with a fourth step 5, the fourth step 5 is connected with a fifth step 6, the fifth step 6 is connected with a sixth step 7, and the sixth step 7 is connected with a radiation section 8;
the circular waveguide-rectangular waveguide conversion structure comprises a first cavity 9, a second cavity 10 and a third cavity 11; the first cavity 9 is square, has the area equal to the area of the opening surface of the waveguide section 1, and is connected with the waveguide section 1; the second cavity is rectangular, and the side length is the average value of the sum of the short sides of the first cavity 9 and the third cavity 11; the third cavity 11 is rectangular and has the same inner dimension as the WR42 waveguide.
The first step 2, the second step 3, the third step 4, the fourth step 5, the fifth step 6 and the sixth step 7 of the circular horn have step-by-step increasing step widths, and the radius of the cylindrical cavity inside the circular horn increases step by step; the sixth step 7 is the same size as the end of the radiating section 8.
A high-order mode TM11 can be excited in the horn by introducing the abrupt structure, and the high-order mode and a main mode TE11 mode of the circular horn are mixed in a certain energy ratio and phase relationship, so that a uniform mouth-to-face field can be obtained on the mouth face of the horn, and a directional diagram with low side lobes and the like is obtained; and this energy ratio and phase relationship can be varied by adjusting the size of the abrupt structure.
The energy ratio and the phase relation of each mode in the loudspeaker can be more finely adjusted by introducing more stepped abrupt change structures, and the working bandwidth of the loudspeaker is expanded.
The first cavity (9), the second cavity (10) and the third cavity (11) of the waveguide conversion structure are all of round angle structures so as to improve the matching effect.
The waveguide conversion structure is in a round corner square shape, the waveguide section 1 is cylindrical, and the cylindrical bottom surface is an inscribed circle of the round corner square; the waveguide section (1) is connected to the first cavity (9); the periphery of the third cavity (11) of the waveguide conversion structure is provided with an FBP220 flange structure which is used for connecting a rectangular waveguide conversion structure for feeding, as shown in figures 2 and 3.
The operating band selected by the invention is 17-25GHz, in which the S11 parameter of the antenna is almost totally lower than-15 dB, and the relative impedance bandwidth is about 38%.
As shown in FIG. 4, the gain is higher than 17dB in 17-25 GHz;
as shown in FIG. 5, high gain is realized in the whole operating frequency band, and the side lobe level is lower than-25 dB in 17-25 GHz;
as in fig. 6, a low sidelobe is achieved throughout the operating band;
referring to fig. 7, which shows the far-field pattern of the antenna with 5 frequency points of 17GHz, 19GHz, 21GHz, 23GHz and 25GHz, it can be seen that the equalization level of the antenna is very good, and the 3dB beam width and the 10dB beam width on both surfaces XOZ and YOZ are almost equal.
The invention obtains a high-gain low-side lobe equalized directional diagram within 17-25GHz, the relative bandwidth is about 38%, the relative bandwidth is far larger than the working bandwidth of the traditional multi-mode horn, the working bandwidth is close to the working bandwidth of a common corrugated horn, and under the condition of the same performance as the corrugated horn, the structure is simpler, and the manufacturing difficulty and the manufacturing cost are lower.
The key part of the invention is a ladder structure for exciting the higher-order mode, but is not necessarily limited to a metal ladder introduced by the outer wall of the metal, and the metal ladder can be replaced by a medium ladder by adopting the idea of a medium loading horn; as shown in fig. 8, 12 is a dielectric step, and the same performance can be obtained by simulating the structure.
The broadband dual-mode multi-step horn antenna provided by the invention is described in detail, numerical simulation examples are applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. A broadband dual-mode multi-step horn antenna is characterized by comprising a multi-step circular horn and a circular waveguide-rectangular waveguide conversion structure;
the multi-step circular horn comprises a waveguide section (1), a first step (2), a second step (3), a third step (4), a fourth step (5), a fifth step (6), a sixth step (7) and a radiation section (8); the waveguide section (1) is connected with a first step (2), the first step (2) is connected with a second step (3), the second step (3) is connected with a third step (4), the third step (4) is connected with a fourth step (5), the fourth step (5) is connected with a fifth step (6), the fifth step (6) is connected with a sixth step (7), and the sixth step (7) is connected with a radiation section (8);
the circular waveguide-rectangular waveguide conversion structure comprises a first cavity (9), a second cavity (10) and a third cavity (11); the first cavity (9) is square, has the area equal to the area of the opening surface of the waveguide section (1), and is connected with the waveguide section (1); the second cavity is rectangular, and the side length is the average value of the sum of the short sides of the first cavity (9) and the third cavity (11); the third cavity (11) is rectangular, and the inner size of the cavity is the same as that of the WR42 waveguide.
2. The antenna of claim 1, wherein: the step widths of a first step (2), a second step (3), a third step (4), a fourth step (5), a fifth step (6) and a sixth step (7) of the circular horn are gradually increased, and the radius of a cylindrical cavity inside the circular horn is gradually increased; the size of the sixth step (7) is the same as that of the tail end of the radiation section (8).
3. The antenna of claim 1, wherein: the first cavity (9), the second cavity (10) and the third cavity (11) of the waveguide conversion structure are all of round angle structures so as to improve the matching effect.
4. The antenna of claim 1, wherein: the waveguide conversion structure is in a round corner square shape, the waveguide section (1) is cylindrical, and the cylindrical bottom surface is an inscribed circle of the round corner square; the waveguide section (1) is connected to the first cavity (9); and an FBP220 flange structure is arranged at the periphery of the third cavity (11) of the waveguide conversion structure and is used for connecting the rectangular waveguide conversion structure for feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259956.3A CN113161750A (en) | 2021-03-10 | 2021-03-10 | Broadband dual-mode multi-step horn antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110259956.3A CN113161750A (en) | 2021-03-10 | 2021-03-10 | Broadband dual-mode multi-step horn antenna |
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| CN113161750A true CN113161750A (en) | 2021-07-23 |
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| CN202110259956.3A Pending CN113161750A (en) | 2021-03-10 | 2021-03-10 | Broadband dual-mode multi-step horn antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336064A (en) * | 2021-11-26 | 2022-04-12 | 中国电子科技集团公司第三十九研究所 | Horn antenna |
| CN114447616A (en) * | 2022-01-26 | 2022-05-06 | 杭州湃腾科技有限公司 | Broadband dual-polarized horn antenna based on multi-section open type side wall |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6163304A (en) * | 1999-03-16 | 2000-12-19 | Trw Inc. | Multimode, multi-step antenna feed horn |
| US20060119528A1 (en) * | 2004-12-03 | 2006-06-08 | Northrop Grumman Corporation | Multiple flared antenna horn with enhanced aperture efficiency |
| US20140266942A1 (en) * | 2013-03-15 | 2014-09-18 | Viasat, Inc. | Antenna Horn with Unibody Construction |
| CN206921983U (en) * | 2017-06-12 | 2018-01-23 | 珠海市美宸电子科技有限公司 | A kind of feed waveguide integration stairstep signal phase shifter |
| CN108232460A (en) * | 2017-11-29 | 2018-06-29 | 安徽四创电子股份有限公司 | A kind of small-bore conical horn of the changes such as wave beam |
| CN109616771A (en) * | 2019-01-29 | 2019-04-12 | 南京信息工程大学 | A kind of millimeter wave broadband low sidelobe electromagnetic horn |
-
2021
- 2021-03-10 CN CN202110259956.3A patent/CN113161750A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6163304A (en) * | 1999-03-16 | 2000-12-19 | Trw Inc. | Multimode, multi-step antenna feed horn |
| US20060119528A1 (en) * | 2004-12-03 | 2006-06-08 | Northrop Grumman Corporation | Multiple flared antenna horn with enhanced aperture efficiency |
| US20140266942A1 (en) * | 2013-03-15 | 2014-09-18 | Viasat, Inc. | Antenna Horn with Unibody Construction |
| CN206921983U (en) * | 2017-06-12 | 2018-01-23 | 珠海市美宸电子科技有限公司 | A kind of feed waveguide integration stairstep signal phase shifter |
| CN108232460A (en) * | 2017-11-29 | 2018-06-29 | 安徽四创电子股份有限公司 | A kind of small-bore conical horn of the changes such as wave beam |
| CN109616771A (en) * | 2019-01-29 | 2019-04-12 | 南京信息工程大学 | A kind of millimeter wave broadband low sidelobe electromagnetic horn |
Non-Patent Citations (1)
| Title |
|---|
| 宫宪: "《卫星通信技术》", 人民邮电出版社, pages: 125 - 127 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336064A (en) * | 2021-11-26 | 2022-04-12 | 中国电子科技集团公司第三十九研究所 | Horn antenna |
| CN114447616A (en) * | 2022-01-26 | 2022-05-06 | 杭州湃腾科技有限公司 | Broadband dual-polarized horn antenna based on multi-section open type side wall |
| CN114447616B (en) * | 2022-01-26 | 2024-02-13 | 杭州湃腾科技有限公司 | Broadband dual-polarized horn antenna based on multistage open type side wall |
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