CN112186336A - Broadband vivaldi antenna integrated with U-shaped groove - Google Patents
Broadband vivaldi antenna integrated with U-shaped groove Download PDFInfo
- Publication number
- CN112186336A CN112186336A CN202010892562.7A CN202010892562A CN112186336A CN 112186336 A CN112186336 A CN 112186336A CN 202010892562 A CN202010892562 A CN 202010892562A CN 112186336 A CN112186336 A CN 112186336A
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- Prior art keywords
- antenna
- microwave substrate
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- shaped groove
- broadband
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- 239000000758 substrate Substances 0.000 claims abstract description 83
- 230000005855 radiation Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims description 8
- 239000003989 dielectric material Substances 0.000 claims description 8
- 230000010287 polarization Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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Classifications
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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
-
- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a broadband vivaldi antenna integrated with a U-shaped groove. The antenna comprises a vivaldi antenna unit and a printed U-shaped groove, wherein the vivaldi antenna unit comprises a first microwave substrate, a first antenna radiation surface, a second microwave substrate, a feed circuit, a third microwave substrate, a second antenna radiation surface and a third microwave substrate which are arranged layer by layer from top to bottom, the first antenna radiation surface is printed on the upper surface of the second microwave substrate, the feed circuit is arranged between the second microwave substrate and the third microwave substrate, and the second antenna radiation surface is printed on the lower surface of the third microwave substrate. The printed U-shaped groove is composed of semicircular metal columns, a lower wall and an upper wall, the upper wall and the lower wall are respectively printed on the upper surface of the first microwave substrate and the lower surface of the third microwave substrate through a PCB process, and the upper wall and the lower wall are connected through a group of semicircular metal columns printed on the side wall of the vivaldi antenna unit. The invention has high processing precision and the working frequency of the antenna can be expanded.
Description
Technical Field
The invention belongs to the technical field of electronic countermeasure or radar. In particular to a broadband vivaldi antenna integrated with a U-shaped groove.
Background
The vivaldi antenna is a broadband antenna mainly used for electronic countermeasure systems and radar systems, and has the advantages of broadband, wide beam, easy array integration and the like. With the continuous development of electronic technology, in order to meet the requirements of electronic devices with different functions on antennas, the antenna aperture is required to have ultra-wide working bandwidth, and meanwhile, the antenna directional diagram can be flexibly changed.
The traditional vivaldi antenna loaded with the U-shaped groove is of a two-layer substrate compression joint structure, the loaded U-shaped groove is manufactured by machining, the U-shaped groove and the vivaldi antenna unit are two independent parts, and the U-shaped groove and the vivaldi antenna unit are connected through welding. When the working frequency of the antenna is in an X frequency band or a higher frequency band, the sizes of the antenna unit and the U-shaped groove are small, the assembly precision of the antenna unit and the U-shaped groove is difficult to control, and meanwhile, the high-frequency microwave substrate is soft in texture, so that the antenna unit is easy to damage during assembly, and the assembly difficulty is high.
Object of the Invention
The invention aims to provide a broadband vivaldi antenna integrated with a U-shaped groove, which has high assembly precision, is simple and feasible, is convenient to form a broadband array for use and has a wide application field, and the working frequency of the antenna covers S, C, X, Ku frequency bands.
The technical solution for realizing the purpose of the invention is as follows: a broadband vivaldi antenna integrated with a U-shaped groove comprises a vivaldi antenna unit and a printed U-shaped groove, wherein the vivaldi antenna unit comprises an antenna radiation surface, a microwave substrate and a feed circuit; the antenna radiation surface is printed inside the microwave substrate; the upper wall and the lower wall of the printed U-shaped groove are respectively printed on the upper surface and the lower surface of the outer side of the microwave substrate by adopting a PCB process, the side wall of the printed U-shaped groove is a group of semicircular metal columns, and the semicircular metal columns are also processed by adopting the PCB process.
Furthermore, the vivaldi antenna unit comprises a first microwave substrate, a first antenna radiation surface, a second microwave substrate, a feed circuit, a third microwave substrate, a second antenna radiation surface and a third microwave substrate which are arranged layer by layer from top to bottom, wherein the first antenna radiation surface is printed on the upper surface of the second microwave substrate, the feed circuit is arranged between the second microwave substrate and the third microwave substrate, and the second antenna radiation surface is printed on the lower surface of the third microwave substrate.
Furthermore, a printed U-shaped groove is formed by the semicircular metal columns, the lower wall and the upper wall, the upper wall is printed on the upper surface of the first microwave substrate through a PCB process, the lower wall is printed on the lower surface of the third microwave substrate through the PCB process, and the upper wall and the lower wall are connected through a group of semicircular metal columns printed on the side wall of the vivaldi antenna unit.
Further, the first microwave substrate is a composite dielectric material with the dielectric constant of 2.2 and the thickness of 0.127 mm.
Furthermore, the second microwave substrate and the third microwave substrate are both made of composite dielectric materials with the dielectric constant of 2.2 and the thickness of 0.787 mm.
Further, the antenna is in a form of a broadband wide beam antenna with frequency covering S, C, X, Ku frequency bands, antenna beams meet the space covering +/-45 degrees, and the antenna is in a linear polarization form.
Compared with the prior art, the invention has the following remarkable advantages: (1) the U-shaped groove and the vivaldi antenna unit are integrated together through a printing process, the welding and assembling process of the U-shaped groove and the antenna unit is not needed, and the antennas can form a broadband array to be used conveniently; (2) meanwhile, the PCB technology has high processing precision, and the working frequency of the broadband vivaldi antenna integrated with the U-shaped groove can be expanded to a higher frequency band; (3) when the antenna is used as a unit of a broadband antenna array, the mutual coupling characteristic between antenna units is changed by adjusting the structure of the U-shaped groove, so that the ultra-broadband work of the antenna array is realized; (4) the working frequency of the antenna covers S, C, X, Ku frequency band, and can be flexibly applied to various electronic systems.
Drawings
Fig. 1 is a schematic structural diagram of a wideband vivaldi antenna integrated with a U-shaped slot according to the present invention.
Fig. 2 is a schematic diagram of a printed U-shaped slot in the integrated U-shaped slot broadband vivaldi antenna of the present invention.
Detailed Description
The invention relates to a broadband wide-beam antenna form with frequency covering S, C, X, Ku frequency bands, wherein antenna beams meet the requirement of covering +/-45-degree airspace, and the antenna is in a linear polarization form. The printed U-shaped groove is integrated with a traditional vivaldi antenna unit through a PCB process, the structure of the adjusted U-shaped groove can change the performance of the antenna unit, the ultra-wideband work of the antenna is realized, the printed U-shaped groove is compared with a metal U-shaped groove of common machining, the machining precision is high, the working frequency of the antenna can be expanded to a higher frequency band, and the specific implementation scheme is as follows:
the invention discloses a broadband vivaldi antenna integrated with a U-shaped groove, which comprises a vivaldi antenna unit and a printed U-shaped groove, wherein the vivaldi antenna unit comprises an antenna radiation surface, a microwave substrate and a feed circuit; the antenna radiation surface is printed inside the microwave substrate; the upper wall and the lower wall of the printed U-shaped groove are respectively printed on the upper surface and the lower surface of the outer side of the microwave substrate by adopting a PCB process, the side wall of the printed U-shaped groove is a group of semicircular metal columns, and the semicircular metal columns are also processed by adopting the PCB process.
Further, the vivaldi antenna unit comprises a first microwave substrate 1, a first antenna radiation surface 2, a second microwave substrate 3, a feed circuit 4, a third microwave substrate 5, a second antenna radiation surface 6 and a third microwave substrate 7 which are arranged layer by layer from top to bottom, wherein the first antenna radiation surface 2 is printed on the upper surface of the second microwave substrate 3, the feed circuit 4 is arranged between the second microwave substrate 3 and the third microwave substrate 5, and the second antenna radiation surface 6 is printed on the lower surface of the third microwave substrate 5.
Furthermore, a printed U-shaped groove 8 is formed by a semicircular metal column 9, a lower wall 10 and an upper wall 11, the upper wall 11 is printed on the upper surface of the first microwave substrate 1 through a PCB process, the lower wall 10 is printed on the lower surface of the third microwave substrate 7 through the PCB process, and the upper wall 11 and the lower wall 10 are connected through a group of semicircular metal columns 9 printed on the side wall of the vivaldi antenna unit.
Further, the first microwave substrate 1 is a composite dielectric material with a dielectric constant of 2.2 and a thickness of 0.127 mm.
Furthermore, the second microwave substrate 3 and the third microwave substrate 5 are both made of composite dielectric materials with dielectric constants of 2.2 and thicknesses of 0.787 mm.
Further, the antenna is in a form of a broadband wide beam antenna with frequency covering S, C, X, Ku frequency bands, antenna beams meet the space covering +/-45 degrees, and the antenna is in a linear polarization form.
The invention is described in further detail below with reference to the figures and specific embodiments.
Examples
The embodiment is a broadband vivaldi antenna integrated with a U-shaped groove, which consists of an antenna radiation surface, a printed U-shaped groove, a four-layer laminated microwave substrate and an antenna feed circuit. The antenna radiation surfaces are printed on the upper outer surface and the lower outer surface of the middle two layers of microwave substrates. The printed U-shaped groove is printed on the upper surface and the lower surface of the outer microwave substrate and on two sides of the antenna substrate and wraps the side walls of two sides of the whole antenna. The four-layer laminated microwave substrate is a main body of the antenna, and all circuits are printed on the surface of the microwave substrate. The feed circuit is printed on the inner side surfaces of the two microwave substrates in the middle layer and provides an excitation signal for the antenna radiation surface.
With reference to fig. 1-2, the broadband vivaldi antenna of the integrated U-shaped slot of the present invention is composed of a microwave substrate 1, an antenna radiation surface 2, a microwave substrate 3, a feed circuit 4, a microwave substrate 5, an antenna radiation surface 6, a microwave substrate 7, and a printed U-shaped slot 8. The microwave substrate 1 is made of a composite dielectric material with a dielectric constant of 2.2, the thickness of the microwave substrate is 0.127mm, and the upper wall 11 of the printed U-shaped groove 8 is printed on the upper surface of the microwave substrate 1 through a PCB process. The antenna radiating surface 2 is printed on the upper surface of the microwave substrate 3. The microwave substrate 3 and the microwave substrate 5 are both made of composite dielectric materials with dielectric constants of 2.2 and thicknesses of 0.787 mm. The feed circuit 4 is located at an intermediate position between the microwave substrate 3 and the microwave substrate 5. The antenna radiating surface 6 is printed on the lower surface of the microwave substrate 5. The lower wall 10 of the printed U-shaped groove 8 is printed on the lower surface of the microwave substrate 7 by the PCB process. The upper wall 11 and the lower wall 10 of the printed U-shaped groove 8 are connected through a group of semicircular metal columns 9 printed on the side wall of the antenna microwave substrate.
When the broadband vivaldi antenna integrated with the U-shaped groove is used as a unit of a broadband antenna array, the mutual coupling characteristic between antenna units is changed by adjusting the structure of the U-shaped groove, and the ultra-wideband work of the antenna array is realized. Through PCB technology preparation, U type groove and antenna radiation face integration are on microwave substrate surface, compare with ordinary machined metal U type groove, and the precision of integrated U type groove is high, and need not to weld with the antenna, and the antenna of being convenient for constitutes broadband array and uses. The working frequency covers S, C, X, Ku frequency band, can be flexibly applied to various electronic systems.
Claims (6)
1. A broadband vivaldi antenna integrated with a U-shaped groove is characterized by comprising a vivaldi antenna unit and a printed U-shaped groove, wherein the vivaldi antenna unit comprises an antenna radiation surface, a microwave substrate and a feed circuit; the antenna radiation surface is printed inside the microwave substrate; the upper wall and the lower wall of the printed U-shaped groove are respectively printed on the upper surface and the lower surface of the outer side of the microwave substrate by adopting a PCB process, the side wall of the printed U-shaped groove is a group of semicircular metal columns, and the semicircular metal columns are also processed by adopting the PCB process.
2. The integrated U-slot broadband vivaldi antenna according to claim 1, characterized in that the vivaldi antenna unit comprises a first microwave substrate (1), a first antenna radiating surface (2), a second microwave substrate (3), a feeding circuit (4), a third microwave substrate (5), a second antenna radiating surface (6), and a third microwave substrate (7) arranged one above the other from top to bottom, the first antenna radiating surface (2) being printed on the upper surface of the second microwave substrate (3), the feeding circuit (4) being arranged in the middle of the second microwave substrate (3) and the third microwave substrate (5), and the second antenna radiating surface (6) being printed on the lower surface of the third microwave substrate (5).
3. The integrated U-slot broadband vivaldi antenna according to claim 2, characterized in that the printed U-slot (8) is formed by a semicircular metal pillar (9), a lower wall (10), and an upper wall (11), the upper wall (11) is printed on the upper surface of the first microwave substrate (1) by a PCB process, the lower wall (10) is printed on the lower surface of the third microwave substrate (7) by a PCB process, and the upper wall (11) and the lower wall (10) are connected by a set of semicircular metal pillars (9) printed on the side walls of the vivaldi antenna unit.
4. An integrated U-slot broadband vivaldi antenna according to claim 3, characterized in that the first microwave substrate (1) is a composite dielectric material with a dielectric constant of 2.2 and a thickness of 0.127 mm.
5. The integrated U-shaped groove broadband vivaldi antenna according to claim 3, characterized in that the second microwave substrate (3) and the third microwave substrate (5) are both made of composite dielectric material with dielectric constant of 2.2 and thickness of 0.787 mm.
6. The integrated U-shaped slot broadband vivaldi antenna as claimed in any one of claims 1 to 5, wherein the antenna is in the form of a broadband wide beam antenna with frequency covering S, C, X, Ku frequency bands, the antenna beam satisfies a space covering ± 45 degrees, and the antenna is in a linear polarization form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010892562.7A CN112186336A (en) | 2020-08-31 | 2020-08-31 | Broadband vivaldi antenna integrated with U-shaped groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010892562.7A CN112186336A (en) | 2020-08-31 | 2020-08-31 | Broadband vivaldi antenna integrated with U-shaped groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112186336A true CN112186336A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010892562.7A Pending CN112186336A (en) | 2020-08-31 | 2020-08-31 | Broadband vivaldi antenna integrated with U-shaped groove |
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| Country | Link |
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| CN (1) | CN112186336A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206937A (en) * | 2015-08-31 | 2015-12-30 | 合肥工业大学 | Micro coaxial structure-based vivaldi ultra-wide band antenna |
| CN106299646A (en) * | 2016-08-23 | 2017-01-04 | 西安电子科技大学 | Based on fluting and broadband, the miniaturization low radar cross section slotline antennas of absorbing material |
| CN108899639A (en) * | 2018-07-12 | 2018-11-27 | 中国船舶重工集团公司第七二四研究所 | A kind of ultra wide bandwidth angle covering low-cross polarization level array antenna unit |
| CN208923351U (en) * | 2018-11-19 | 2019-05-31 | 中国电子科技集团公司第十四研究所 | Medium integrated waveguide gradual change slot antenna |
| CN113224549A (en) * | 2020-08-20 | 2021-08-06 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband array antenna integrated with H-shaped coupling structure |
-
2020
- 2020-08-31 CN CN202010892562.7A patent/CN112186336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206937A (en) * | 2015-08-31 | 2015-12-30 | 合肥工业大学 | Micro coaxial structure-based vivaldi ultra-wide band antenna |
| CN106299646A (en) * | 2016-08-23 | 2017-01-04 | 西安电子科技大学 | Based on fluting and broadband, the miniaturization low radar cross section slotline antennas of absorbing material |
| CN108899639A (en) * | 2018-07-12 | 2018-11-27 | 中国船舶重工集团公司第七二四研究所 | A kind of ultra wide bandwidth angle covering low-cross polarization level array antenna unit |
| CN208923351U (en) * | 2018-11-19 | 2019-05-31 | 中国电子科技集团公司第十四研究所 | Medium integrated waveguide gradual change slot antenna |
| CN113224549A (en) * | 2020-08-20 | 2021-08-06 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Ultra-wideband array antenna integrated with H-shaped coupling structure |
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Application publication date: 20210105 |