CN103107423A - Double-spine horn antenna for dielectric cylinder scratching action - Google Patents
Double-spine horn antenna for dielectric cylinder scratching action Download PDFInfo
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- CN103107423A CN103107423A CN2013100427799A CN201310042779A CN103107423A CN 103107423 A CN103107423 A CN 103107423A CN 2013100427799 A CN2013100427799 A CN 2013100427799A CN 201310042779 A CN201310042779 A CN 201310042779A CN 103107423 A CN103107423 A CN 103107423A
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- 230000002393 scratching effect Effects 0.000 title abstract 3
- 239000003989 dielectric material Substances 0.000 claims abstract description 11
- 238000013461 design Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 4
- 238000005457 optimization Methods 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The invention relates to a double-spine horn antenna for dielectric cylinder scratching action. The double-spine horn antenna for the dielectric cylinder scratching action is characterized in that holes are formed evenly at equal distance in a side face of each of two spines along the curved direction of each spine curve. The distance d between adjacent hole grooves along the opening direction is 4 to 7mm. The radius r of each hole is 0.8 to 2mm. The 8 to 13 hole grooves are formed in the side face of the each of the two spines of the double-spine horn antenna along the curved direction of each spin curve and a cylindrical dielectric material is filled in each hole groove. The radius of each cylinder is 0.7 to 1.9mm and relative dielectric constant of the dielectric material is 18 to 35. The dielectric material is fixed in each hole groove through adhesive. Meanwhile, an optimized design method of an exponential term and quadratic curve superposition is adopted by each spine curve, the gradient at a connecting portion of a smooth section and a linear section is equal through fine adjustment of the radius of curvature at the portion of a horn opening. According to the dielectric cylinder double-spine horn antenna, working frequency is 2.3 to 23 GHz. Standing-wave ratio of a whole frequency range is near 1.4, gain is near 13 dB and performance of the antenna is improved.
Description
Technical field
The present invention relates to a kind of medium post double-ridged horn antenna, relate in particular to a kind of ridge structure tessellated medium post and the different double-ridged horn antenna of ridge curve shape, belong to the technology for radio frequency field.
Background technology
Antenna is the critical component that transmits and receives signal in radio ultra wide band system, and along with the development of microwave technology, the research of broad-band antenna is become to become more and more important, and horn antenna has obtained sufficient application and development in field of radio frequency communication.And the size and shape of antenna is very important, these characteristics determined the ability of antenna reception and emitting electromagnetic wave.
Double-ridged horn antenna is a kind of microwave antenna of square-section of being opened by the waveguide terminal gradual change, for its working frequency range of broadening, has wide band characteristics according to ridge waveguide, adds the ridge shape structure at waveguide part and the flare of loudspeaker.
At present, when considering the simulation calculation amount, in order to reduce requirement on machining accuracy and processing cost, make ridge shape be multistage linear gradient or exponential curve gradual change variation when the design horn antenna, cause loudspeaker impedances to change discontinuous, make horn antenna can not reach excellent performance index requirement in ultra broadband.
Traditional double-ridged horn antenna is when ridge shape designs, play the effect of shielding for electromagnetic wave due to the ridge metal material, when electromagnetic wave is propagated in the metal surface, part energy by local at body surface, and on the direction perpendicular to the metal surface, electromagnetic field intensity is exponential damping with the increase of distance, has finally suppressed the transmission of antenna.
Traditional double-ridged horn antenna is in order to obtain high far gain, and its effective radiation actinal surface is very large, makes leading isoplanar other positions of phase place of ripple on bore over glaze line.In order to improve the gain performance of antenna, the traditional double ridged horn antenna obtains large actinal surface by extending changeover portion, makes like this double-ridged horn antenna volume relatively large.
Summary of the invention
The objective of the invention is to propose in order to overcome the deficiencies in the prior art a kind of tessellated medium post ridge structure
And the double-ridged horn antenna that the ridge shape curve is different makes horn antenna in radiation and receives under the prerequisite that signal has good fidelity to have the performance parameters such as wider bandwidth of operation, low standing-wave ratio, high-gain.
The technical scheme that the present invention solves its technical problem employing is: a kind of double-ridged horn antenna based on ridge structure tessellated medium post.It is characterized in that: along the equidistantly evenly perforate of ridge curved direction, be 4-7mm along the spacing d between the adjacent hole slot of opening direction in two ridge sides, the radius r in hole is 0.8-2mm.Along the ridge direction of curve, 8-13 hole slot is set in double-ridged horn antenna ridge side, this field that is spaced between metal is similar to waveguide, its phase velocity is greater than the airborne light velocity, the metal refractive index n〉1, utilize Fermat's principle, the light path of the arbitrary wave beam in same light source between adjacent two wavefront must equate, can determine that the perforate center of circle satisfies hyperbola OO with the aplanatism principle
m=OP+nPF
m, OO wherein
mBe the distance of the initial center O of loudspeaker section to m the fluting center of circle, n is the refractive index of metal ridge, and PFm is m center of circle O
mProjection Fm on the y direction is to the distance of the wide center P of ridge; Centered by OP, the position to the distance at the wide center of ridge, take the center as the origin of coordinates, sets up rectangular coordinate system take the horn antenna radiation direction as z axle forward.
Further, the place adds cylindric dielectric material at hole slot, and cylindrical radius is 0.7-1.9mm, and the relative dielectric constant of dielectric material is 18-35, uses binding agent, makes dielectric material well fill and to be fixed in all hole slots.
Change simultaneously the geometrical curve of ridge shape in original double-ridged horn antenna, adopt the Optimization Design of exponential term and conic section stack, the ridge curve adopts the Optimization Design of exponential term and conic section stack, and the ridge curvilinear function satisfies y (z)=Ae
kz+ Cz
2A is by the spacing b between two ridges
1Determine, i.e. A=b
1/ 2; Coefficient k and C are determined by the coordinate of the mid point of ridge curve and bore face place ridge terminal point; Horn length L is greater than half of minimum operation wavelength, and horn mouth diametric plane height D determines by working frequency range and the horn flare angle of horn antenna in design, and ridge End of Curve coordinate is determined by the length L of horn mouth diametric plane height D and loudspeaker; Another clicks the ridge mid point of curve, if the impedance of loudspeaker actinal surface is regarded as the air wave impedance, and its terminate load as loudspeaker, loudspeaker itself are as the impedance transformer between feed and load, and the ridge in loudspeaker plays the impedance matching effect; In addition, the antenna equivalence is the 50 Ω input impedance of feed part and load impedance antenna, so be approximately in the impedance of loudspeaker mid point
Z wherein
L/2Be the resistance value of loudspeaker mid point, the theoretical middle impedance of substitution ridge waveguide satisfies formula
Make Z=Z in formula
L/2, determine the cut-off wavelength λ of ridge waveguide
cZ wherein
∞Ridge waveguide characteristic impedance during for the frequency infinity, λ is free space wavelength, λ
cBe the cut-off wavelength of ridge waveguide, z is the characteristic impedance of ridge waveguide; And λ here
cAnd locate the cross section of loudspeaker between chi chung, namely the middle point coordinates of loudspeaker is relevant; Here get the cross section of locating loudspeaker between chi chung, set up and the identical double ridged waveguide model in ridge waveguide cross section, by the strange mould cut-off wavelength of double ridged waveguide Resonance Equation, determine the total capacitance of unit length, use the LC oscillating circuit theoretical, try to achieve its cut-off wavelength λ
cAnd then the middle point coordinates of definite loudspeaker; Determine the ridge curve in conjunction with two point coordinates.Near loudspeaker bore place by fine setting ridge curve curvature radius, make the slope of smooth section and straightway joining place equate.
Advantage of the present invention is:
When electromagnetic wave signal transferred to dielectric cylinder, the gap between cylinder and metal ridge had just consisted of a chamber, and Multi reflection occurs on inner cavity surface electromagnetic wave.When the dielectric constant of filled media material in cavity was 18-35, transmission coefficient strengthened.It is to become large owing to having filled the coverage that the high medium of refractive index is subject to later in the aperture that the enhancing situation of this transmission coefficient can be understood as, thereby the medium of filling high index of refraction in the hole is to improve electromagnetic transmission capacity.
Generally thinking spherical wave from the electromagnetic wave of feed outgoing, is not the loudspeaker directions and require electromagnetic wave in the transmission of double-ridged horn antenna.For the outgoing beam to feed focuses on, utilize the medium post that wave beam is focused on conversion, obtain plane wave outgoing field, thereby the effect that perturbs of medium post position can be played the effect of tightening electromagnetic field.
The curvilinear motion of described double-ridged horn antenna ridge is slow, makes the structure at horn antenna bore place slowly change, and has reduced the reflection at antenna aperture place.
The gradual change of ridge shape curvilinear function changes smooth gradual change into sudden change with ridge bore place, and the slope of smooth section and straightway joining place equates, reaches the effect with the impedance perfect matching of air.
Description of drawings
Fig. 1 is the waveguide bottom schematic view of medium post double-ridged horn antenna of the present invention.
Fig. 2 is the ridge curve synoptic diagram of double-ridged horn antenna of the present invention.
Fig. 3 is the loudspeaker actinal surface view of double-ridged horn antenna of the present invention.
Fig. 4 is the ridge end view of double-ridged horn antenna of the present invention.
Fig. 5 is that traditional double-ridged horn antenna and medium post double-ridged horn antenna are at the standing-wave ratio comparison diagram of 2.3-23GHz.
Fig. 6 is that traditional double-ridged horn antenna and medium post double-ridged horn antenna are at the gain contrast figure of 2.3-23GHz.
Embodiment
At first according to the working frequency range requirement of horn antenna, determine the size of waveguide segment ridge waveguide, its schematic cross-section as shown in Figure 1.In fact electromagnetic cut-off state is the process of a gradual change, and the useful bandwidth of operation of ridge waveguide is generally less than the theoretical work bandwidth.Thereby consider the working frequency range of actual horn antenna during waveguide dimensions in design as far as possible.Choose the length a of ridge waveguide, width b, two ridge width a
1, two ridge spacing b
1By line characteristic impedance as can be known, the ratio of polar plate spacing and plate width has determined the impedance of parallel-plate.Mould cut-off wavelength Resonance Equation strange in double ridged waveguide determines that the size of waveguide segment is respectively a=20.4mm, a
1=6.65mm, b=12.9mm, b
1=0.86mm.
Be the mean value requirement of two terminal impedances according to horn length greater than half (operation wavelength that 2.3GHz is corresponding is about 130.4mm) of minimum operation wavelength and the impedance of loudspeaker mid point, choose horn length L=70mm.
The ridge curve synoptic diagram by two ridge spacings of determining, can be determined the coefficient A in the ridge shape curve as shown in Figure 2.Coefficient k and C are determined by the coordinate of two points.Here, double-ridged horn antenna determines that through said method the ridge curvilinear equation is y=0.43 * e
0.05491z+ 0.002117z
2
Loudspeaker bore cross section as shown in Figure 3, pyramidal horn antenna is chosen in double-ridged horn antenna horn mouth footpath here, namely keeps the narrow limit of rectangular waveguide and broadside size to open simultaneously, makes changing according to square law that the phase place of narrow limit and broadside all is similar to.The height D and the width W that obtain the horn mouth diametric plane in conjunction with the relation of the physical dimension of pyramidal horn antenna and gain coefficient and operation wavelength are respectively 60.9mm and 86.9mm.
As shown in Figure 4, determine that according to the aplanatism principle perforate center of circle satisfies hyperbola 2 equation OO
m=OP+nPF
m, choose the refractive index n of metallic aluminium=1.48, along the equidistantly evenly perforate 1 of ridge curve 3 bending directions, along the spacing X=5mm between the adjacent hole slot of opening direction, the radius r in hole is 1.2mm in two ridge sides.It is characterized in that: along the ridge direction of curve, 12 hole slots are set in double-ridged horn antenna ridge side, determine that hole circle heart coordinate is (4,2.37); (9,2.68); (14,3.14); (19,3.78); (24,4.63); (29,5.69); (34,7.03); (39; , 8.68); (44,10.72); (49,13.22); (54,16.31); (59,20.15).
The place adds cylindric dielectric material at hole slot, and cylindrical radius is 1mm, and the relative dielectric constant of dielectric material is 20, uses binding agent, and dielectric material can well be filled and be fixed in all hole slots.
As Fig. 5, shown in Figure 6, with traditional double ridged horn antenna performance comparison, medium post double-ridged horn antenna provided by the invention, its operating frequency is 2.3-23GHz.The standing-wave ratio of whole frequency range is near 1.4, and gain is near 13dB, and the performance of antenna is improved.
Claims (3)
1. a medium post perturbs the double-ridged horn antenna of effect, it is characterized in that: along the equidistantly evenly perforate of ridge curved direction, be 4-7mm along the spacing d between the adjacent hole slot of opening direction in two ridge sides, the radius r in hole is 0.8-2mm; Along the ridge direction of curve, 8-13 hole slot is set in double-ridged horn antenna ridge side;
Determine that with the aplanatism principle perforate center of circle satisfies hyperbola OO
m=OP+nPF
m, OO wherein
mBe the distance of the initial center O of loudspeaker section to m the fluting center of circle, n is the refractive index of metal ridge, and PFm is m center of circle O
mProjection Fm on the y direction is to the distance of the wide center P of ridge; Centered by OP, the position to the distance at the wide center of ridge, take the center as the origin of coordinates, sets up rectangular coordinate system take the horn antenna radiation direction as z axle forward.
2. medium post according to claim 1 perturbs the double-ridged horn antenna of effect, it is characterized in that: the place adds cylindric dielectric material at hole slot, and cylindrical radius is 0.7-1.9mm, and the relative dielectric constant of dielectric material is 18-35.
3. medium post according to claim 1 perturbs the double-ridged horn antenna of effect, it is characterized in that: the ridge curve adopts the Optimization Design of exponential term and conic section stack, and the ridge curvilinear function satisfies y (z)=Ae
kz+ Cz
2A is by the spacing b between two ridges
1Determine, i.e. A=b
1/ 2; Coefficient k and C are determined by the coordinate of the mid point of ridge curve and bore face place ridge terminal point; Horn length L is greater than half of minimum operation wavelength, and horn mouth diametric plane height D determines by working frequency range and the horn flare angle of horn antenna in design, and ridge End of Curve coordinate is determined by the length L of horn mouth diametric plane height D and loudspeaker; Another clicks the ridge mid point of curve, if the impedance of loudspeaker actinal surface is regarded as the air wave impedance, and its terminate load as loudspeaker, loudspeaker itself are as the impedance transformer between feed and load, and the ridge in loudspeaker plays the impedance matching effect; In addition, the antenna equivalence is the 50 Ω input impedance of feed part and load impedance antenna, so be approximately in the impedance of loudspeaker mid point
Z wherein
L/2Be the resistance value of loudspeaker mid point, the theoretical middle impedance of substitution ridge waveguide satisfies formula,
Make Z=Z in formula
L/2, determine the cut-off wavelength λ of ridge waveguide
cZ wherein
∞Ridge waveguide characteristic impedance during for the frequency infinity, λ is free space wavelength, λ
cBe the cut-off wavelength of ridge waveguide, z is the characteristic impedance of ridge waveguide; And λ here
cAnd locate the cross section of loudspeaker between chi chung, namely the middle point coordinates of loudspeaker is relevant; Here get the cross section of locating loudspeaker between chi chung, set up and the identical double ridged waveguide model in ridge waveguide cross section, by the strange mould cut-off wavelength of double ridged waveguide Resonance Equation, determine the total capacitance of unit length, use the LC oscillating circuit theoretical, try to achieve its cut-off wavelength λ
cAnd then the middle point coordinates of definite loudspeaker; Determine the ridge curve in conjunction with two point coordinates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042779.9A CN103107423B (en) | 2013-02-03 | 2013-02-03 | A kind of dielectric posts perturbs the double-ridged horn antenna of effect |
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| CN201310042779.9A CN103107423B (en) | 2013-02-03 | 2013-02-03 | A kind of dielectric posts perturbs the double-ridged horn antenna of effect |
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| CN103107423B CN103107423B (en) | 2015-07-29 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752837A (en) * | 2015-03-30 | 2015-07-01 | 东南大学 | Packaged interlayer antenna capable of seam phase amplitude calibration |
| CN105024172A (en) * | 2015-08-11 | 2015-11-04 | 中国电子科技集团公司第五十四研究所 | Loading ridged horn phased array antenna unit |
| CN108063315A (en) * | 2017-12-01 | 2018-05-22 | 西安电子科技大学 | Double-ridged horn antenna based on the loading of special-shaped ridge |
| CN109509982A (en) * | 2018-12-04 | 2019-03-22 | 安徽站乾科技有限公司 | A kind of high-gain broadband electromagnetic horn |
| CN109687154A (en) * | 2019-02-22 | 2019-04-26 | 北京星英联微波科技有限责任公司 | Double ridge structure ultra wide band electromagnetic horns |
| CN109904600A (en) * | 2019-02-22 | 2019-06-18 | 北京星英联微波科技有限责任公司 | Four ridge structure ultra wide band electromagnetic horns |
| CN110165396A (en) * | 2019-05-21 | 2019-08-23 | 西安电子科技大学 | Sparse type dielectric-rod antenna based on 3D printing |
| CN112886253A (en) * | 2021-02-07 | 2021-06-01 | 北京星英联微波科技有限责任公司 | Compact 5G millimeter wave dual-polarized horn antenna |
| CN113125858A (en) * | 2021-04-20 | 2021-07-16 | 电子科技大学 | Single fiber dielectric constant testing device and method with double-ridge structure |
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| GB2173646A (en) * | 1985-03-22 | 1986-10-15 | Decca Ltd | Compound horn antenna |
| CN2411587Y (en) * | 1999-11-29 | 2000-12-20 | 中国科学院紫金山天文台 | Multi-ridge horn antenna |
| CN202405423U (en) * | 2011-12-05 | 2012-08-29 | 成都创亿嘉科技有限公司 | Novel ridged horn antenna |
| JP5043138B2 (en) * | 2010-02-15 | 2012-10-10 | 東芝電波プロダクツ株式会社 | Ridge horn antenna manufacturing method and ridge horn antenna |
-
2013
- 2013-02-03 CN CN201310042779.9A patent/CN103107423B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173646A (en) * | 1985-03-22 | 1986-10-15 | Decca Ltd | Compound horn antenna |
| CN2411587Y (en) * | 1999-11-29 | 2000-12-20 | 中国科学院紫金山天文台 | Multi-ridge horn antenna |
| JP5043138B2 (en) * | 2010-02-15 | 2012-10-10 | 東芝電波プロダクツ株式会社 | Ridge horn antenna manufacturing method and ridge horn antenna |
| CN202405423U (en) * | 2011-12-05 | 2012-08-29 | 成都创亿嘉科技有限公司 | Novel ridged horn antenna |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752837A (en) * | 2015-03-30 | 2015-07-01 | 东南大学 | Packaged interlayer antenna capable of seam phase amplitude calibration |
| CN105024172A (en) * | 2015-08-11 | 2015-11-04 | 中国电子科技集团公司第五十四研究所 | Loading ridged horn phased array antenna unit |
| CN105024172B (en) * | 2015-08-11 | 2017-11-14 | 中国电子科技集团公司第五十四研究所 | Load ridged horn phased array antenna unit |
| CN108063315A (en) * | 2017-12-01 | 2018-05-22 | 西安电子科技大学 | Double-ridged horn antenna based on the loading of special-shaped ridge |
| CN108063315B (en) * | 2017-12-01 | 2023-06-30 | 西安电子科技大学 | Double-ridge horn antenna based on special-shaped ridge loading |
| CN109509982A (en) * | 2018-12-04 | 2019-03-22 | 安徽站乾科技有限公司 | A kind of high-gain broadband electromagnetic horn |
| CN109904600A (en) * | 2019-02-22 | 2019-06-18 | 北京星英联微波科技有限责任公司 | Four ridge structure ultra wide band electromagnetic horns |
| CN109687154A (en) * | 2019-02-22 | 2019-04-26 | 北京星英联微波科技有限责任公司 | Double ridge structure ultra wide band electromagnetic horns |
| CN109904600B (en) * | 2019-02-22 | 2023-09-12 | 北京星英联微波科技有限责任公司 | Ultra-wideband horn antenna with four-ridge structure |
| CN109687154B (en) * | 2019-02-22 | 2023-09-26 | 北京星英联微波科技有限责任公司 | Ultra-wideband horn antenna with double-ridge structure |
| CN110165396A (en) * | 2019-05-21 | 2019-08-23 | 西安电子科技大学 | Sparse type dielectric-rod antenna based on 3D printing |
| CN110165396B (en) * | 2019-05-21 | 2020-09-15 | 西安电子科技大学 | Sparse type dielectric rod antenna based on 3D prints |
| CN112886253A (en) * | 2021-02-07 | 2021-06-01 | 北京星英联微波科技有限责任公司 | Compact 5G millimeter wave dual-polarized horn antenna |
| CN113125858A (en) * | 2021-04-20 | 2021-07-16 | 电子科技大学 | Single fiber dielectric constant testing device and method with double-ridge structure |
| CN113125858B (en) * | 2021-04-20 | 2022-03-08 | 电子科技大学 | Single fiber dielectric constant testing device and method with double-ridge structure |
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|---|---|
| CN103107423B (en) | 2015-07-29 |
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