CN206992300U - The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° - Google Patents
The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° Download PDFInfo
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- CN206992300U CN206992300U CN201720859794.6U CN201720859794U CN206992300U CN 206992300 U CN206992300 U CN 206992300U CN 201720859794 U CN201720859794 U CN 201720859794U CN 206992300 U CN206992300 U CN 206992300U
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- double
- ultra wide
- dipole antenna
- wide band
- reflecting plate
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Abstract
The utility model discloses the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° that a kind of section is low, wave beam is wide, feeding classification is simple, there is good radiation characteristic disclosure satisfy that the requirement in shore communications to seashore steel tower fan antenna.The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 °, including dielectric substrate, metal patch dipole radiators, feed structure and gradual change reflecting plate；Own centre line cross orthogonal slot, diagonal slot, circular trough and logarithm wire casing are set in the metal patch dipole radiators；Using the double-polarized printed dipole antenna section in uhf band ultra wide band ± 45 ° is low, wave beam is wide, feeding classification is simple, has good radiation characteristic, its impedance bandwidth is up to 51%, ± 45 ° of dual polarizations are realized, disclosure satisfy that the requirement to seashore steel tower fan antenna in shore communications.
Description
Technical field
Antenna technical field is the utility model is related to, especially a kind of double-polarized printed dipole in uhf band ultra wide band ± 45 °
Sub-antenna.
Background technology
It is known：With the rapid development of Modern wireless communication, requirements at the higher level are proposed to diversity antenna technology.Wherein pole
Change a kind of special circumstances of the diversity as space diversity, two width antennas of horizontal polarization and vertical polarization are integrated into a physics
It is compact-sized in entity, save space.In addition dual polarized antenna is simultaneously operable under transmission duplex pattern, therefore it is most prominent
The advantages of going out is to save single directional antenna for base station quantity, is widely used in radar, 2G (1710-1920MHZ), 3G (1880-
2170MHZ) and in 4G (2300-2400MHZ and 2570-2690MHZ) communication system.So this does not require nothing more than dual polarized antenna
Circuit characteristic with broadband, also there are stable antenna pattern, larger polarization isolation (XPD, cross
Polarization discrimination) and it is front and rear than (FTBR, front-to-back ratio).
Wherein printed dipole antenna light weight, easy syntype, is widely used in mobile base station and led to radar because of its low section
In letter.But existing existing antenna can not take into account broadband, broad beam, high-gain, the problems such as high polarization isolation；Therefore, nothing
Method meets the requirement to seashore steel tower fan antenna in shore communications.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of section is low, wave beam is wide, feeding classification is simple, has
Good radiation characteristic disclosure satisfy that uhf band ultra wide band ± 45 ° of the requirement in shore communications to seashore steel tower fan antenna are double
Polarize printed dipole antenna.
Technical scheme is used by the utility model solves its technical problem：Uhf band ultra wide band ± 45 ° are bipolar
Change printed dipole antenna, including dielectric substrate, gradual change reflecting plate；
Metal patch dipole radiators, the metal patch dipole radiators are provided with the dielectric substrate
Including two electrode couple subelements, and two neighboring doublet unit short circuit；Center line is formed between the two electrode couples subelement
Cross orthogonal slot；It is provided with the two electrode couples subelement and is rotated clockwise or counter-clockwise with center line cross orthogonal slot
45 ° of diagonal slot；The end of the center line cross orthogonal slot is provided with logarithm wire casing；The logarithm wire casing has two
Logarithm shape, the curvilinear function expression formula of two logarithm shapes is l=c+klnt；Wherein c and k is constant；
The metal patch dipole radiators center is provided with feed port；The feed port is located at diagonal
The point of intersection of groove；The center line cross orthogonal slot has four one side of something；And every one side of something does not extend into feed port 6, often
Circular trough is provided with bar one side of something；The circular trough is uniformly distributed on dielectric substrate by matrix；
The gradual change reflecting plate is located at the underface of dielectric substrate；The gradual change reflecting plate and dielectric substrate it
Between be provided with feed structure；The metal patch dipole radiators are electrically connected by feed structure with gradual change reflecting plate.
Specifically, the feed structure includes two coaxial lines and two shorting stubs；
The crust that the coaxial line has is connected with an arm of doublet unit, and heart is connected with another arm, and heart institute
Even an arm of doublet unit is connected to gradual change reflecting plate by shorting stub.
Further, the center of circle of the circular trough is located at the half of center of center line cross orthogonal slot.
Further, the gradual change reflecting plate is conical frustum；Under the upper surface radius of circle of the conical frustum is
The 1/2 of end face radius of circle, and inside is hollow-core construction.
Specifically, the edge of the dielectric substrate is provided with terminated line；Two neighboring doublet unit passes through termination
Line is connected two-by-two.
Preferably, the metal patch dipole radiators are using gold, silver, copper or tin manufacture.
The beneficial effects of the utility model are：The double-polarized printed idol in uhf band ultra wide band ± 45 ° described in the utility model
Pole sub-antenna, due to set in the dipole radiators on dielectric substrate own centre line cross orthogonal slot, diagonal slot,
Circular trough, logarithm wire casing；Wherein the size of diagonal slot influences low-frequency resonant, and the size of logarithm wire casing influences high-frequency resonant, right
The size of linea angulata groove and circular trough all has an impact to whole frequency band.Therefore, uhf band ultra wide band described in the utility model ±
45 ° of double-polarized printed dipole antennas can take into account broadband, broad beam, high-gain, the problems such as high polarization isolation, section is low,
Wave beam is wide, feeding classification is simple, has a good radiation characteristic, and its impedance bandwidth realizes ± 45 ° of dual polarizations up to 51%, can
Meet the requirement to seashore steel tower fan antenna in shore communications.
Brief description of the drawings
Fig. 1 is the solid of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment
Figure；
Fig. 2 is the main view of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment
Figure；
Fig. 3 is the vertical view of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment
Figure；
Fig. 4 is the partial enlarged drawing of A in Fig. 3；
Fig. 5 is the partial enlarged drawing of B in Fig. 3；
Fig. 6 is that the standing wave of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment is imitated
True curve map；
Fig. 7 is the center frequency of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment
Dot gains simulation curve figure；
Fig. 8 is that uhf band ultra wide band ± 45 ° double-polarized printed dipole antennas is working in the utility model embodiment
In frequency band, antenna gain is all higher than 8dB schematic diagram；
Fig. 9 is the 3dB ripples of the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° in the utility model embodiment
Beam width analogous diagram；
Indicated in figure：1- dielectric substrates, 2- metal patch dipole radiators, 21- doublet units, 3- center lines
Cross orthogonal slot, 4- diagonal slots, 5- circular troughs, 6- feed ports, 7- logarithm wire casings, 71- logarithm shapes, 8- gradual changes reflection
Plate, 9- coaxial lines, 10 shorting stubs, 11- terminated lines.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Figures 1 to 6, the double-polarized printed dipole day in uhf band ultra wide band ± 45 ° described in the utility model
Line, including dielectric substrate 1 and gradual change reflecting plate 8；
Metal patch dipole radiators 2, the metal patch dipole radiation are provided with the dielectric substrate 1
Body 2 includes two electrode couple subelements 21, and the short circuit of two neighboring doublet unit 21；Shape between the two electrode couples subelement 21
Into center line cross orthogonal slot 3；Be provided with the two electrode couples subelement 21 with center line cross orthogonal slot 3 clockwise or
The diagonal slot 4 that 45 ° of rotate counterclockwise；The end of the center line cross orthogonal slot 3 is provided with logarithm wire casing 7；It is described right
Number wire casing 7 has two logarithm shapes 71, and the curvilinear function expression formula of two logarithm shapes 71 is l=c+klnt；Wherein c
It is constant with k；
The center of metal patch dipole radiators 2 is provided with feed port 6；The feed port 6 positioned at pair
The point of intersection of linea angulata groove 4；The center line cross orthogonal slot 3 has four one side of something；And every one side of something does not extend into feed end
Mouthfuls 6, circular trough 5 is provided with every one side of something；The circular trough 5 is uniformly distributed on dielectric substrate 1 by matrix；
The gradual change reflecting plate 8 is located at the underface of dielectric substrate 1；The gradual change reflecting plate 8 and dielectric base
Feed structure is provided between plate 1；The metal patch dipole radiators 2 are electrically connected by feed structure and gradual change reflecting plate 8
Connect.
Specifically, the logarithm wire casing 7 refers to that its bus is curve, i.e., described logarithm wire casing 7 has two logarithm shapes
71, the curvilinear function expression formula of two logarithm shapes 71 is l=c+klnt；Wherein c and k is constant；C and k can root
According to the particular condition in use of antenna, i.e. the requirement to high-frequency resonant, manufacturing firm voluntarily formulates.
During use：Due to the double-polarized printed dipole in uhf band ultra wide band ± 45 ° described in the utility model
Antenna, own centre line cross orthogonal slot 3, diagonal slot 4, circular trough 5 are set in its top metal patch dipole radiators 2
And logarithm wire casing 7, meanwhile, the short circuit of each pair adjacent dipole subelement 21, diagonal slot 4 is by the up time of center line cross orthogonal slot 3
45 ° of pin or rotate counterclockwise obtain；Therefore, any pair of dipole is made+45 ° of polarized radiation sources of conduct but also can not only to make
For -45 ° of polarized radiation sources.Also, all line of rabbet joint：Center line cross orthogonal slot 3, diagonal slot 4, circular trough 5 and logarithm line
Groove 7 can effectively extend current length, reduce antenna size, and increase interport isolation.Wherein, diagonal slot 4
Size influences low-frequency resonant, and the size of logarithm wire casing 7 influences high-frequency resonant, the size of center line cross orthogonal slot 3 and circular trough 5
All have an impact to whole frequency band.
In summary, the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° described in the utility model can be simultaneous
Broadband is cared for, broad beam, high-gain, the problems such as high polarization isolation, section is low, wave beam is wide, feeding classification is simple, has good spoke
Characteristic is penetrated, its impedance bandwidth realizes ± 45 ° of dual polarizations, disclosure satisfy that in shore communications to seashore steel tower sector day up to 51%
The requirement of line.
In order to solve the problems, such as Antenna Impedance Matching and balanced feeding；Specifically, the feed structure includes two together
Axis 9 and two shorting stubs 10；The crust that the coaxial line 9 has is connected with an arm of doublet unit 21, heart with it is another
One arm is connected, and heart connects an arm of doublet unit 21 and is connected to gradual change reflecting plate 8 by shorting stub 18.Using above-mentioned
Feed structure, the wherein sheath portion of coaxial line 9 constitute feed Balun with metal shorting stub 10, so as to solve antenna impedance
The problem of with balanced feeding.
In order to optimize influence of the circular trough 5 to whole frequency band；It is easy to by setting various sizes of circular trough 5 to obtain
Corresponding frequency band；Further, the center of circle of the circular trough 5 is located at the half of center of center line cross orthogonal slot 3.
In order to which impedance bandwidth can be effectively improved, as shown in Fig. 2 further, the gradual change reflecting plate 8 is bored for cone
Platform；The upper surface radius of circle of the conical frustum is the 1/2 of lower surface radius of circle, and inside is hollow-core construction.Specifically, gradually
Become reflecting plate 8 and use circular platform type grading structure, upper surface is highly 0.15 λ apart from radiant body, and transition is highly 0.08 λ, λ
For low frequency air wavelength；The transition highly refers to the upper surface of conical frustum the distance between to lower surface.It is described
Gradual change reflecting plate 8 uses said structure, can be effectively improved impedance bandwidth, significantly improves 3dB beam angles in addition.Such as Fig. 9
The 3dB beam angle analogous diagrams of the shown double-polarized printed dipole antenna in uhf band ultra wide band ± 45 °.
For the ease of the short circuit between two neighboring doublet unit 21, while will not be to center line cross orthogonal slot 3, right
Linea angulata groove 4, circular trough 5 and logarithm wire casing 7 interfere, and further, the edge of the dielectric substrate 1 is provided with end
Wiring 11；Two neighboring doublet unit 21 is connected two-by-two by terminated line 11.
The metal patch dipole radiators 2 can use various material to manufacture, specifically, the metal patch dipole
Sub- radiant body 2 is using gold, silver, copper or tin manufacture.In order to reduce manufacturing cost, while ensure radiance, it is preferred that the gold
Category paster dipole radiators 2 are made using copper.
Embodiment
As shown in Figures 1 to 6, the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 °, by dielectric substrate
1st, metal patch dipole radiators 2, feed structure and gradual change reflecting plate 8 form.
The metal patch dipole radiators 2 are made up of metal material, in the plane dielectric substrate 1 that is printed on
Upper surface.The material of metal patch dipole radiators 2 can be the metal materials such as gold, silver, copper, tin, but consider performance
With cost, the metal patch dipole radiators 2 are prepared using copper product.In order to extend current length, interport isolation is improved,
Increase cross polarization ratio, 4 kinds of different types of notching constructions are provided with metal patch dipole radiators 2.Respectively：Center
Line cross orthogonal slot 3, diagonal slot 4, circular trough 5 and logarithm wire casing 7；The logarithm wire casing 7 has two logarithm shapes 71,
The curvilinear function expression formula of two logarithm shapes 71 is l=c+klnt；Wherein c and k is constant；Wherein diagonal slot 4
It is divided into symmetrical two-by-two 4 half wire casings 4-1,4-2,4-3,4-4 equal in magnitude, and pairwise orthogonal, the wide 2mm length of every wire casing
190mm, the i.e. long 190mm of the wide 2mm of wire casing 4-1, the length and width in this gap can be adjusted according to specific works wavelength, center line ten
Word orthogonal slot 3 is two orthogonal as broad as long wire casings, and the wide 3.5mm of the long 236mm of every wire casing, positioned at radiant body geometric center
Symmetric Orthogonal, the logarithm wire casing 7 are located at the end of center line cross orthogonal slot 3, and the function expression of its bus curve is l=
115+3*lnt, circular trough 5 has four, and four radiuses of circular trough 5 are identical, and radius is 16mm, and the center of circle is located at center line ten
The half of center of word orthogonal slot 3, each pair are symmetrical with adjacent center cross orthogonal slot 3.To the top of each monopole welt
Angle carries out corner cut processing, the smoother flow direction of excitation point electric current is arrived radiant body.
Dielectric substrate 1 is polytetrafluoroethylmaterial material, and radiation patch printing is square thereon, the side of dielectric substrate 1 four
Midpoint is provided with 4 holes and is connected by screw with reflecting plate, sees Fig. 1, Fig. 2.The utility model radiates effect to realize that ultra wide band is high
Rate, the dielectric constant of dielectric substrate 1 is 2.65 in preferred embodiment, thickness 1.6mm.
The feed structure includes two coaxial lines 9 and two shorting stubs 10；The crust and idol that the coaxial line 9 has
One arm of pole subelement 21 is connected, and heart is connected with another arm, and heart connects an arm of doublet unit 21 and passes through short circuit
Line 18 is connected to gradual change reflecting plate 8.Using above-mentioned feed structure, the wherein sheath portion of coaxial line 9 and the structure of metal shorting stub 10
Into feed Balun, so as to solve the problems, such as Antenna Impedance Matching and balanced feeding.
Gradual change reflecting plate 8 is shown in Fig. 1, and the gradual change reflecting plate 8 is conical frustum；The upper surface circle of the conical frustum
Radius is the 1/2 of lower surface radius of circle, and inside is hollow-core construction.Specifically, gradual change reflecting plate 8 uses circular platform type graded junction
Structure, upper surface are highly 0.15 λ apart from radiant body, and transition is highly 0.08 λ, and λ is low frequency air wavelength；The gradual change portion
Point height refers to the upper surface of conical frustum the distance between to lower surface.The gradual change reflecting plate 8 uses said structure, can
To be effectively improved impedance bandwidth, 3dB beam angles are significantly improved in addition；UHF frequencies in the utility model embodiment as shown in Figure 9
The 3dB beam angle analogous diagrams of the double-polarized printed dipole antenna in section ultra wide band ± 45 °.
The effect part accompanying drawing 5 of embodiment to Fig. 7, wherein Fig. 5 be uhf band ultra wide band in the utility model embodiment ±
The standing wave simulation curve figure of 45 ° of double-polarized printed dipole antennas；Fig. 6 is uhf band ultra wide band in the utility model embodiment
The center frequency point gain simulation curve figure of ± 45 ° of double-polarized printed dipole antennas；Fig. 7 is UHF in the utility model embodiment
The double-polarized printed dipole antenna in multiband Ultra Wideband ± 45 ° in working band, antenna gain is all higher than 8dB schematic diagram.
Claims (6)
- The double-polarized printed dipole antenna in 1.UHF multiband Ultra Wideband ± 45 °, it is characterised in that：Including dielectric substrate (1) with And gradual change reflecting plate (8)；Metal patch dipole radiators (2), the metal patch dipole radiation are provided with the dielectric substrate (1) Body (2) includes two electrode couple subelements (21), and two neighboring doublet unit (21) short circuit；The two electrode couples subelement (21) center line cross orthogonal slot (3) is formed between；It is provided with the two electrode couples subelement (21) with center line cross just The diagonal slot (4) for handing over groove (3) to rotate clockwise or counter-clockwise 45 °；The end of the center line cross orthogonal slot (3) is all provided with It is equipped with logarithm wire casing (7)；The logarithm wire casing (7) has two logarithm shapes (71), the song of two logarithm shapes (71) Line function expression formula is l=c+klnt；Wherein c and k is constant；Metal patch dipole radiators (2) center is provided with feed port (6)；The feed port (6) is located at The point of intersection of diagonal slot (4)；The center line cross orthogonal slot (3) has four one side of something；And every one side of something does not extend into Feed port (6), circular trough (5) is provided with every one side of something；The circular trough (5) presses square on dielectric substrate (1) Battle array is uniformly distributed；The gradual change reflecting plate (8) is located at the underface of dielectric substrate (1)；The gradual change reflecting plate (8) and dielectric Substrate is provided with feed structure between (1)；The metal patch dipole radiators (2) pass through feed structure and gradual change reflecting plate (8) electrically connect.
- 2. the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° as claimed in claim 1, it is characterised in that：It is described Gradual change reflecting plate (8) is conical frustum；The upper surface radius of circle of the conical frustum is the 1/2 of lower surface radius of circle, and Inside is hollow-core construction.
- 3. the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° as claimed in claim 1, it is characterised in that：It is described Feed structure includes two coaxial lines (9) and two shorting stubs (10)；The crust that the coaxial line (9) has is connected with an arm of doublet unit (21), and heart is connected with another arm, and heart One arm of connected doublet unit (21) is connected to gradual change reflecting plate (8) by shorting stub (18).
- 4. the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° as claimed in claim 1, it is characterised in that：It is described The center of circle of circular trough (5) is located at the half of center of center line cross orthogonal slot (3).
- 5. the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° as claimed in claim 1, it is characterised in that：It is described The edge of dielectric substrate (1) is provided with terminated line (11)；Two neighboring doublet unit (21) passes through terminated line (11) two Two are connected.
- 6. the double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° as claimed in claim 1, it is characterised in that：It is described Metal patch dipole radiators (2) are using gold, silver, copper or tin manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720859794.6U CN206992300U (en) | 2017-07-17 | 2017-07-17 | The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720859794.6U CN206992300U (en) | 2017-07-17 | 2017-07-17 | The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992300U true CN206992300U (en) | 2018-02-09 |
Family
ID=61404950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720859794.6U Expired - Fee Related CN206992300U (en) | 2017-07-17 | 2017-07-17 | The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206992300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511883A (en) * | 2018-03-06 | 2018-09-07 | 厦门大学嘉庚学院 | The gradual change patch spiral dipole-compound ultra-wide band antenna of complementary crevices |
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
-
2017
- 2017-07-17 CN CN201720859794.6U patent/CN206992300U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511883A (en) * | 2018-03-06 | 2018-09-07 | 厦门大学嘉庚学院 | The gradual change patch spiral dipole-compound ultra-wide band antenna of complementary crevices |
| CN108511883B (en) * | 2018-03-06 | 2023-05-12 | 厦门大学嘉庚学院 | Gradual change patch spiral dipole-complementary gap composite ultra-wideband antenna |
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
| CN115313028B (en) * | 2022-08-17 | 2023-09-01 | 深圳市飞宇信电子有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency bands |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20180717 |