CN103904423B - A kind of low section broadband medium back of the body chamber four radiator antenna unit - Google Patents
A kind of low section broadband medium back of the body chamber four radiator antenna unit Download PDFInfo
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- CN103904423B CN103904423B CN201210583788.4A CN201210583788A CN103904423B CN 103904423 B CN103904423 B CN 103904423B CN 201210583788 A CN201210583788 A CN 201210583788A CN 103904423 B CN103904423 B CN 103904423B
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Abstract
The invention belongs to microwave antenna art, relate to the improvement that broadband medium is carried on the back chamber four radiator antenna unit.It includes radiation medium plate (1), microstrip-fed dielectric-slab (2) and quartering power splitter, it is characterised in that: carry on the back chamber with medium and instead of metal backing chamber.Thus reducing volume and weight, reducing feeder loss, improve over all Integration, reduce cost.
Description
Technical field
The invention belongs to microwave antenna art, relate to the improvement that broadband medium is carried on the back chamber four radiator antenna unit.
Background technology
Phased array system especially active phased array system so that radar has electron scanning flexibly, advanced power management and signal processing technology ability, brings a lot of remarkable performance.Compared with carrying mechanical scanning fire control radar with common machine, airborne active phased array fire control radar not only performance in operating distance, capacity of resisting disturbance, reliability and antenna stealthing design etc. is greatly improved, and has been also equipped with realizing the abilities such as simultaneously multi-functional and Multi-target Attacking truly.Element antenna and helical antenna are successfully used in phased array system, but above-mentioned antenna has higher section, cause that volume and weight is big, limit its application in airborne active phased array.Metal cavity-backed radiator antenna is the antenna of the low section in a kind of broadband, and the structure of current a kind of metal backing chamber four radiator antenna unit is referring to Fig. 1 to Fig. 3, and it is made up of radiation medium plate 1, microstrip-fed dielectric-slab 2, metallic plate 3 and quartering power splitter.Upper surface at radiation medium plate 1 has the radiation patch 13 of four foursquare rectangular arrangements, upper surface at microstrip-fed dielectric-slab 2 has four microstrip lines 12, one end of every microstrip line forms feed with a radiation patch 13 and couples, and the upper end of the other end of every microstrip line and first plated through-hole 11 forms electrical connection.The lower surface of radiation medium plate 1 is bonding with the upper surface of microstrip-fed dielectric-slab 2 is overall.Having four air back of the body chambeies 14 on the upper surface of metallic plate 3, the position in each air back of the body chamber 14 is corresponding with the position of radiation patch 13, and each air back of the body chamber 14 is a horizontal cross-section is the groove of rectangle.Described quartering power splitter is made up of dielectric-slab 5 under dielectric-slab on power splitter 4, power splitter and SMA coaxial connector 7.On power splitter, the upper surface of dielectric-slab 4 is pasted by covering the upper barricade 15 that Copper Foil is constituted, and is stained with strip line center conduction band 8 on power splitter on the lower surface of dielectric-slab 4, and strip line center conduction band 8 has four outfans and an input.Power splitter has on dielectric-slab 44 the second plated through-holes 9, the position of each second plated through-hole 9 is corresponding with the position of a strip line center conduction band outfan, the lower end of each second plated through-hole 9 is formed with corresponding strip line center conduction band outfan and electrically connects, and the upper end of each second plated through-hole 9 keeps insulation with upper barricade 15.Under power splitter, the lower surface of dielectric-slab 5 is pasted by covering the lower barricade 6 that Copper Foil is constituted, the lower surface of dielectric-slab 5 under power splitter, SMA coaxial connector 7 is fixed in the position corresponding with strip line central guiding tape input end, dielectric-slab 5 has the 3rd plated through-hole 17 under power splitter, the lower end of the 3rd plated through-hole 17 is formed with the inner wire of SMA coaxial connector 7 and electrically connects, the upper end of the 3rd plated through-hole 17 is formed with the input of strip line center conduction band and electrically connects, the outer conductor of SMA coaxial connector 7 is formed with lower barricade 6 and electrically connects, on power splitter dielectric-slab 4 lower surface and under power splitter, the upper surface of dielectric-slab 5 is bonding is overall.Metallic plate 3 on the lower surface and power splitter of microstrip-fed dielectric-slab 2 between the upper surface of dielectric-slab 4 and bonding be overall, metallic plate 3 has 4 coaxial line installing holes, the position of each coaxial line installing hole is corresponding with the position of first plated through-hole 11 and the second plated through-hole 9, in each coaxial line installing hole, coaxial line 10 is installed, the upper end of coaxial line 10 inner wire is formed with the lower end of the first plated through-hole 11 and electrically connects, and the lower end of coaxial line 10 inner wire is formed with the upper end of the second plated through-hole 9 and electrically connects.
Its operation principle is: input power is accessed by SMA coaxial connector 7, is transported to four microstrip lines 12 through quartering power splitter decile, and four microstrip lines 12 are by carrying on the back chamber to the radiation patch 13 outside emittance of couple feed.
Its shortcoming is: the first, volume and weight is big.Owing to metal backing chamber itself has higher longitudinal profile, increase the volume and weight of antenna element；The second, feeder loss is big.Owing to the connection of microstrip line 12 with strip line center conduction band 8 needs to run through whole metallic plate 3 so that the length of coaxial line 10 increases, and adds feeder loss；3rd, over all Integration is poor.The junction of coaxial line 10 and the first plated through-hole 11 and the second plated through-hole 9 needs to use coaxial plug-in component, makes structure complicated, further increases volume and weight, improve cost.
Summary of the invention
It is an object of the invention to: propose the broadband medium back of the body chamber four radiator antenna unit that a kind of volume and weight is little, feeder loss is little, over all Integration is good.
The technical scheme is that a kind of low section broadband medium back of the body chamber four radiator antenna unit, it includes radiation medium plate 1, microstrip-fed dielectric-slab 2 and quartering power splitter；Upper surface at radiation medium plate 1 has the radiation patch 13 of four foursquare rectangular arrangements, upper surface at microstrip-fed dielectric-slab 2 has four microstrip lines 12, one end of every microstrip line forms feed with a radiation patch 13 and couples, the upper end of the other end of every microstrip line and first plated through-hole 11 forms electrical connection, and the lower surface of radiation medium plate 1 is bonding with the upper surface of microstrip-fed dielectric-slab 2 is overall；Four described power splitters are made up of dielectric-slab 5 under dielectric-slab on power splitter 4, power splitter and SMA coaxial connector 7；nullOn power splitter, the upper surface of dielectric-slab 4 is pasted by covering the upper barricade 15 that Copper Foil is constituted,Power splitter is stained with on the lower surface of dielectric-slab 4 strip line center conduction band 8,Strip line center conduction band 8 has four outfans and an input，Power splitter has on dielectric-slab 44 the second plated through-holes 9，The position of each second plated through-hole 9 is corresponding with the position of a strip line center conduction band outfan，The lower end of each second plated through-hole 9 is formed with corresponding strip line center conduction band outfan and electrically connects，The upper end of each second plated through-hole 9 keeps insulation with upper barricade 15，Under power splitter, the lower surface of dielectric-slab 5 is pasted by covering the lower barricade 6 that Copper Foil is constituted,The lower surface of dielectric-slab 5 under power splitter、SMA coaxial connector 7 is fixed in the position corresponding with strip line central guiding tape input end，Dielectric-slab 5 has the 3rd plated through-hole 17 under power splitter,The lower end of the 3rd plated through-hole 17 is formed with the inner wire of SMA coaxial connector 7 and electrically connects，The upper end of the 3rd plated through-hole 17 is formed with the input of strip line center conduction band and electrically connects，The outer conductor of SMA coaxial connector 7 is formed with lower barricade 6 and electrically connects，On power splitter dielectric-slab 4 lower surface and under power splitter, the upper surface of dielectric-slab 5 is bonding is overall；It is characterized in that: the lower surface of microstrip-fed dielectric-slab 2 is bonding with the upper surface of dielectric-slab on power splitter 4 for entirety；The position of each second plated through-hole 9 is corresponding with the position of first plated through-hole 11, and the upper end of each second plated through-hole 9 is formed with the lower end of the first corresponding plated through-hole 11 and electrically connects；Power splitter has four medium back of the body chambeies, the position in each medium back of the body chamber is corresponding with the position of radiation patch 13, each medium back of the body chamber is surrounded by the 4th plated through-hole 16 of one group of through upper dielectric-slab 4 and lower dielectric-slab 5, defined horizontal cross-section figure is Long Circle or rectangle, the vertical center line conllinear of the vertical center line of this figure and radiation patch 13, the upper end of the 4th plated through-hole 16 is formed with upper barricade 15 and electrically connects, and the lower end of the 4th plated through-hole 16 is formed with lower barricade 6 and electrically connects；When the horizontal cross-section figure that medium carries on the back chamber is Long Circle, inscribe oblong width w=(0.8～1.2) a of all 4th plated through-holes 16, the length of side that length s1=(0.8～1.5) a, a are radiation patch 13 of the inscribe rectangle of all 4th plated through-holes 16；When the horizontal cross-section figure that medium carries on the back chamber is rectangle, the oblong width of inscribe of all 4th plated through-holes 16 is w, length s2=(1～2) a of the inscribe rectangle of all 4th plated through-holes 16.
The invention have the advantage that first, volume and weight little.Medium back of the body chamber instead of metal backing chamber, the weight saving of antenna element, and medium back of the body chamber is positioned at the dielectric-slab 4 of quartering power splitter and lower dielectric-slab 5, reduces the section of antenna element.The second, feeder loss is little.Owing to eliminating coaxial line 10, therefore feeder loss greatly reduces.3rd, over all Integration is good.Owing to eliminating coaxial line 10 and plug connector, simplify structure, further reduce volume and weight, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of current a kind of metal backing chamber four radiator antenna unit, and it is the top view of radiation medium plate 1.In order to show the structure of different medium layer, each dielectric layer has been done perspective process by this figure.
Fig. 2 is the sectional view of I-I section in Fig. 1, and this section is vertical section.
Fig. 3 is the sectional view of II-II section in Fig. 1.
Fig. 4 is the structural representation of the present invention, and it is the top view of radiation medium plate 1.In order to show the structure of different medium layer, each dielectric layer has been done perspective process by this figure.
Fig. 5 is the sectional view of III-III section in Fig. 4, and this section is vertical section.
Fig. 6 is the sectional view of IV-IV section in Fig. 4.
Detailed description of the invention
Below the present invention is described in further details.Referring to Fig. 4 to Fig. 6, a kind of low section broadband medium back of the body chamber four radiator antenna unit, it includes radiation medium plate 1, microstrip-fed dielectric-slab 2 and quartering power splitter；Upper surface at radiation medium plate 1 has the radiation patch 13 of four foursquare rectangular arrangements, upper surface at microstrip-fed dielectric-slab 2 has four microstrip lines 12, one end of every microstrip line forms feed with a radiation patch 13 and couples, the upper end of the other end of every microstrip line and first plated through-hole 11 forms electrical connection, and the lower surface of radiation medium plate 1 is bonding with the upper surface of microstrip-fed dielectric-slab 2 is overall；Described quartering power splitter is made up of dielectric-slab 5 under dielectric-slab on power splitter 4, power splitter and SMA coaxial connector 7；nullOn power splitter, the upper surface of dielectric-slab 4 is pasted by covering the upper barricade 15 that Copper Foil is constituted,Power splitter is stained with on the lower surface of dielectric-slab 4 strip line center conduction band 8,Strip line center conduction band 8 has four outfans and an input，Power splitter has on dielectric-slab 44 the second plated through-holes 9，The position of each second plated through-hole 9 is corresponding with the position of a strip line center conduction band outfan，The lower end of each second plated through-hole 9 is formed with corresponding strip line center conduction band outfan and electrically connects，The upper end of each second plated through-hole 9 keeps insulation with upper barricade 15，Under power splitter, the lower surface of dielectric-slab 5 is pasted by covering the lower barricade 6 that Copper Foil is constituted,The lower surface of dielectric-slab 5 under power splitter、SMA coaxial connector 7 is fixed in the position corresponding with strip line central guiding tape input end，Dielectric-slab 5 has the 3rd plated through-hole 17 under power splitter,The lower end of the 3rd plated through-hole 17 is formed with the inner wire of SMA coaxial connector 7 and electrically connects，The upper end of the 3rd plated through-hole 17 is formed with the input of strip line center conduction band and electrically connects，The outer conductor of SMA coaxial connector 7 is formed with lower barricade 6 and electrically connects，On power splitter dielectric-slab 4 lower surface and under power splitter, the upper surface of dielectric-slab 5 is bonding is overall；It is characterized in that: the lower surface of microstrip-fed dielectric-slab 2 is bonding with the upper surface of dielectric-slab on power splitter 4 for entirety；The position of each second plated through-hole 9 is corresponding with the position of first plated through-hole 11, and the upper end of each second plated through-hole 9 is formed with the lower end of the first corresponding plated through-hole 11 and electrically connects；Power splitter has four medium back of the body chambeies, the position in each medium back of the body chamber is corresponding with the position of radiation patch 13, each medium back of the body chamber is surrounded by the 4th plated through-hole 16 of one group of through upper dielectric-slab 4 and lower dielectric-slab 5, defined horizontal cross-section figure is Long Circle or rectangle, the vertical center line conllinear of the vertical center line of this figure and radiation patch 13, the upper end of the 4th plated through-hole 16 is formed with upper barricade 15 and electrically connects, and the lower end of the 4th plated through-hole 16 is formed with lower barricade 6 and electrically connects；When the horizontal cross-section figure that medium carries on the back chamber is Long Circle, inscribe oblong width w=(0.8～1.2) a of all 4th plated through-holes 16, the length of side that length s1=(0.8～1.5) a, a are radiation patch 13 of the inscribe rectangle of all 4th plated through-holes 16；When the horizontal cross-section figure that medium carries on the back chamber is rectangle, the oblong width of inscribe of all 4th plated through-holes 16 is w, length s2=(1～2) a of the inscribe rectangle of all 4th plated through-holes 16.
The operation principle of the present invention is: radiation patch 13 couple feed is produced radiation by medium back of the body chamber by microstrip line 12, and big dielectric constant produces stronger coupling, and antenna can be obtained close coupling by the dielectric cavity of small size.
Following table provides the major parameter of 3 embodiments of the present invention.
In table, the unit of operating frequency is GHz, and all the other are mm.
Embodiments of the invention 1, compared with current structure, the volume of antenna element is by 6.9*10^3mm3Become 1.27*10^4mm3, decreasing about 45.6%, weight is become 16.2g by 34.9g, reduce about 43.6%, cost savings 30%.
Claims (1)
1. a low section broadband medium back of the body chamber four radiator antenna unit, it includes radiation medium plate (1), microstrip-fed dielectric-slab (2) and quartering power splitter；Upper surface at radiation medium plate (1) has the radiation patch (13) of four foursquare rectangular arrangements, upper surface at microstrip-fed dielectric-slab (2) has four microstrip lines (12), one end of every microstrip line forms feed with a radiation patch (13) and couples, the upper end of the other end of every microstrip line and first plated through-hole (11) forms electrical connection, and the lower surface of radiation medium plate (1) is bonding with the upper surface of microstrip-fed dielectric-slab (2) is overall；Described quartering power splitter is made up of dielectric-slab (5) under dielectric-slab on power splitter (4), power splitter and SMA coaxial connector (7)；nullOn power splitter, the upper surface of dielectric-slab (4) is pasted by covering the upper barricade (15) that Copper Foil is constituted,Power splitter is stained with on the lower surface of dielectric-slab (4) strip line center conduction band (8),There are four outfans and an input in strip line center conduction band (8)，Power splitter has on dielectric-slab (4) 4 the second plated through-holes (9)，The position of each second plated through-hole (9) is corresponding with the position of a strip line center conduction band outfan，The lower end of each second plated through-hole (9) is formed with corresponding strip line center conduction band outfan and electrically connects，The upper end of each second plated through-hole (9) keeps insulation with upper barricade (15)，Under power splitter, the lower surface of dielectric-slab (5) is pasted by covering the lower barricade (6) that Copper Foil is constituted,The lower surface of dielectric-slab (5) under power splitter、SMA coaxial connector (7) is fixed in the position corresponding with strip line central guiding tape input end，Dielectric-slab (5) has the 3rd plated through-hole (17) under power splitter,The lower end of the 3rd plated through-hole (17) is formed with the inner wire of SMA coaxial connector (7) and electrically connects，The upper end of the 3rd plated through-hole (17) is formed with the input of strip line center conduction band and electrically connects，The outer conductor of SMA coaxial connector (7) is formed with lower barricade (6) and electrically connects，On power splitter dielectric-slab (4) lower surface and under power splitter, the upper surface of dielectric-slab (5) is bonding is overall；It is characterized in that: the lower surface of microstrip-fed dielectric-slab (2) is bonding with the upper surface of dielectric-slab on power splitter (4) for entirety；The position of each second plated through-hole (9) is corresponding with the position of first plated through-hole (11), and the upper end of each second plated through-hole (9) is formed with the lower end of corresponding the first plated through-hole (11) and electrically connects；Power splitter has four medium back of the body chambeies, the position in each medium back of the body chamber is corresponding with the position of radiation patch (13), each medium the back of the body chamber by dielectric-slab (4) on one group of through power splitter and under power splitter the 4th plated through-hole (16) of dielectric-slab (5) surround, defined horizontal cross-section figure is Long Circle or rectangle, the vertical center line conllinear of the vertical center line of this figure and radiation patch (13), the upper end of the 4th plated through-hole (16) is formed with upper barricade (15) and electrically connects, the lower end of the 4th plated through-hole (16) is formed with lower barricade (6) and electrically connects；When the horizontal cross-section figure that medium carries on the back chamber is Long Circle, the width of the oblong inscribe rectangle that described 4th plated through-hole (16) surrounds is w=(0.8～1.2) a, the length of side that length s1=(0.8～1.5) a, a are radiation patch (13) of the oblong inscribe rectangle that described 4th plated through-hole (16) surrounds；When the horizontal cross-section figure that medium carries on the back chamber is rectangle, the width of the rectangle that described 4th plated through-hole (16) surrounds is w, length s2=(1～2) a of the rectangle that described 4th plated through-hole (16) surrounds.
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| CN103904423B true CN103904423B (en) | 2016-07-13 |
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| CN109075452B (en) | 2016-04-05 | 2023-06-02 | 上海诺基亚贝尔股份有限公司 | Broadband back cavity type slotted antenna |
| CN106340727B (en) * | 2016-11-02 | 2019-02-15 | 电子科技大学 | A kind of phased array antenna based on connection cavity |
| CN107994341B (en) * | 2017-11-08 | 2021-08-13 | 湖北三江航天险峰电子信息有限公司 | Antenna feed structure |
| CN108598704B (en) * | 2018-03-14 | 2021-04-30 | 湖北三江航天险峰电子信息有限公司 | Microstrip antenna feeder |
| US11552411B2 (en) | 2018-05-04 | 2023-01-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Cavity-backed antenna element and array antenna arrangement |
| CN110380233A (en) * | 2018-12-29 | 2019-10-25 | 西安电子科技大学 | A kind of low section Scanning Phased Array Antenna with Broadband |
| CN112259959B (en) * | 2020-10-19 | 2022-11-22 | 西安电子工程研究所 | Low profile wide bandwidth swept phased array antenna unit |
| CN112134013B (en) * | 2020-11-23 | 2021-02-05 | 电子科技大学 | Broadband dual-polarization phased array antenna based on medium integration cavity |
| CN112886226B (en) * | 2021-01-12 | 2022-05-17 | 重庆邮电大学 | Broadband low-profile back-reflection circularly polarized antenna and back-reflection method thereof |
| CN114597640B (en) * | 2022-02-16 | 2024-01-12 | 南京信息工程大学 | Polarization reconfigurable antenna |
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| KR101087288B1 (en) * | 2009-03-31 | 2011-11-29 | 한국항공대학교산학협력단 | Circular polarized antenna using satellite communication |
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| EP0527417A1 (en) * | 1991-08-07 | 1993-02-17 | Alcatel Espace | Miniaturized radio frequency antenna element |
| CN201213154Y (en) * | 2008-04-28 | 2009-03-25 | 中国电子科技集团公司第三十八研究所 | Back cavity micro-band antenna |
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