CN103594812B - Thin substrate broadband difference-beam planar horn antenna - Google Patents
Thin substrate broadband difference-beam planar horn antenna Download PDFInfo
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- CN103594812B CN103594812B CN201310617490.5A CN201310617490A CN103594812B CN 103594812 B CN103594812 B CN 103594812B CN 201310617490 A CN201310617490 A CN 201310617490A CN 103594812 B CN103594812 B CN 103594812B
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Abstract
Thin substrate broadband difference-beam planar horn antenna relates to a kind of horn antenna.This antenna is included in the microstrip feed line (2) on medium substrate (1), horn antenna (3) and logarithm period oscillator (4), horn antenna (3) is by the first metal flat (7), second metal flat (8) and two row's metallization via hole trumpet side walls (9) compositions, odd number metallization arrays of vias (11) and even number dielectric-filled waveguide (17) is had in horn antenna (3), in horn antenna (3) bore face (10), upper each dielectric-filled waveguide (17) is connected to a logarithm period oscillator (4), left half antenna (15) and institute's logarithm period oscillator that connects (4) and right half antenna (16) and institute's logarithm period oscillator that connects (4) symmetrical.Radiation field of aerial polarised direction and substrate-parallel, this antenna can use thin Substrate manufacture and bandwidth, gain high, large zero is dark, cost is low and compact conformation.
Description
Technical field
The present invention relates to a kind of horn antenna, especially a kind of thin substrate broadband difference-beam planar horn antenna.
Background technology
Horn antenna has a wide range of applications in the systems such as satellite communication, terrestrial microwave link and radio telescope.But the huge physical dimension of three-dimensional horn antenna constrains its application and development in planar circuit.In recent years, the proposition of substrate integrated waveguide technology and development well facilitate the development of planar horn antenna.Substrate integration wave-guide have size little, lightweight, be easy to integrated and the advantage such as processing and fabricating.Based on the substrate integration wave-guide planar horn antenna of the plane of substrate integration wave-guide except the feature with horn antenna, also well achieve the miniaturization of horn antenna, lightness, and be easy to be integrated in microwave and millimeter wave planar circuit.Traditional substrate integration wave-guide planar horn antenna have a restriction, the thickness of antenna horn aperture substrate is greater than 1/10th operation wavelengths, and antenna just can have good radiance, not so due to reflection, the energy emission in antenna is not gone out.So just require that the thickness of antenna substrate can not be too thin, L-band etc. comparatively low-frequency range to meet this requirement very difficult especially, very thick substrate not only volume and weight is very large, counteracts integrated advantage, but also adds cost.The polarised direction of these antenna radiation field is generally all perpendicular to medium substrate in addition, and some application needs the polarization parallel of radiation field in medium substrate.More existing antennas load the radiation that paster improves thin substrate plane horn antenna before planar horn antenna, but the patch size loaded is comparatively large, and working band is narrower.Generally for and realize difference beam, need to adopt special feeder equipment, these feeder equipments or not easily realize in planar circuit, or the phase-shift circuit of arrowband.
Summary of the invention
technical problem:the object of the invention is to propose a kind of thin substrate broadband difference-beam planar horn antenna, the polarised direction of this radiation field of aerial is parallel with medium substrate, very thin medium substrate manufacture can be used, when the electric very thin thickness of substrate, still there is excellent radiance, there is wider working band, increase the zero dark and improve the slope of antenna difference beam of antenna difference beam.
technical scheme:thin substrate broadband difference-beam planar horn antenna of the present invention, is characterized in that this antenna comprises the microstrip feed line be arranged on medium substrate, the integrated horn antenna of substrate and multiple logarithm period oscillator; First port of described microstrip feed line is the input/output port of this antenna, and the second port of microstrip feed line connects with the integrated horn antenna of substrate; The integrated horn antenna of substrate to be connected the first metal flat and the second metal flat by the first metal flat being positioned at medium substrate one side, the second metal flat of being positioned at medium substrate another side two row's metallization via hole trumpet side walls with through medium substrate form, width between two row's metallization via hole trumpet side walls of the integrated horn antenna of substrate becomes large gradually, form one tubaeformly to dehisce, the end of dehiscing is the bore face of the integrated horn antenna of substrate; Odd number metallization arrays of vias is had to connect the first metal flat and the second metal flat in the integrated horn antenna of substrate, the length of each metallization arrays of vias is the same, the head end of metallization arrays of vias is inner at the integrated horn antenna of substrate, and the tail end of metallization arrays of vias is on the bore face of the integrated horn antenna of substrate; In metallization arrays of vias, there is an intermediate metallization arrays of vias that integrated for substrate horn antenna is divided into a symmetrical left side half antenna and right half antenna two parts; Row's metallization via hole trumpet side walls that two adjacent metallization arrays of vias or a metallization arrays of vias are adjacent, form dielectric-filled waveguide with the first metal flat and the second metal flat, outside bore face, each dielectric-filled waveguide is connected to a logarithm period oscillator.
The conduction band of microstrip feed line connects with the first metal flat, and the ground plane of microstrip feed line connects with the second metal flat.
The width of dielectric-filled waveguide will make electromagnetic wave to propagate and not to be cut off wherein, and the length of dielectric-filled waveguide has more than half guide wavelength.
Each logarithm period oscillator has end face radiation arm and bottom surface radiation arm respectively on the two sides being positioned at medium substrate, the end face radiation arm of logarithm period oscillator is connected with the first metal flat of the integrated horn antenna of substrate, the bottom surface radiation arm of logarithm period oscillator is connected with the second metal flat of the integrated horn antenna of substrate, the end face radiation arm of each logarithm period oscillator and bottom surface radiation arm respectively have two or plural oscillator, end face radiation arm is the same with the quantity of bottom surface radiation arm oscillator, and oscillator corresponding on end face radiation arm and bottom surface radiation arm stretches in the opposite direction.
The logarithm period oscillator that left half antenna connects and the logarithm period oscillator that right half antenna connects are symmetrical.
Metallize in via hole trumpet side walls and metallization arrays of vias, the spacing of two adjacent metallization via holes is less than or equals 1/10th of operation wavelength, makes the metallization via hole trumpet side walls formed can be equivalent to electric wall with metallization arrays of vias.
Electromagnetic wave inputs from one end of microstrip feed line, the other end through microstrip feed line enters substrate integration wave-guide horn antenna, after propagating a segment distance, run into metallization arrays of vias, just enter the transmission of each dielectric-filled waveguide respectively, the electromagnetic wave entering each dielectric waveguide enters logarithm period element radiates by antenna opening diametric plane, and the polarised direction of radiation field also becomes and connects subparallel horizontal direction with substrate, the bandwidth of operation of symmetric periodic oscillator is very wide, and therefore antenna can broadband operation.Because the oscillator direction of extension on the radiation arm of demand pairs periodic oscillator left half a day is contrary with the oscillator direction of extension on the radiation arm of demand pairs periodic oscillator right half a day, therefore left half a day demand pairs periodic oscillator radiation field polarised direction with right half a day demand pairs periodic oscillator radiation field polarised direction contrary, so just define difference beam in the direction of parallel medium substrate.
Owing to there being multiple metallization arrays of vias that the bore face of antenna is divided into a lot of little bore faces, it is very little that the size of the logarithm period oscillator that each osculum diametric plane connects can be done, and compact conformation, the size of such antenna also only increase seldom.
Antenna from feeding microstrip line to logarithm period oscillator, be all closed substrate integrated wave guide structure, therefore feeder loss is less.
beneficial effect:the beneficial effect of the thin substrate broadband difference-beam planar horn antenna of the present invention is that the polarised direction of this radiation field of aerial is parallel with medium substrate; This antenna can use the medium substrate manufacture of thickness of wavelength lower than 2 percent, far below the substrate thickness of 1/10th wavelength required by usual planar horn antenna, when the electric very thin thickness of substrate, still there is excellent radiance, such as in 6GHz frequency, adopt the thickness of epoxide resin material substrate can be reduced to 0.5mm by 2.5mm, thus greatly reduce size, weight and cost; Antenna can increase the zero dark and improve the slope of antenna difference beam of difference beam, and the working band of antenna is wide, compact conformation, feeder loss are little.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the structural representation of the thin substrate broadband difference-beam planar horn antenna of the present invention.
Have in figure: the integrated horn antenna 3 of medium substrate 1, microstrip feed line 2, substrate, logarithm period layered transducer elements 4, first port 5 of microstrip feed line 2, second port 6 of microstrip feed line 2, first metal flat 7 of medium substrate 1, second metal flat 8 of medium substrate 1, metallization via hole trumpet side walls 9, the bore face 10 of antenna 3, metallization arrays of vias 11, the head end 12 of metallization arrays of vias 11, the tail end 13 of metallization arrays of vias 11, intermediate metallization arrays of vias 14, left half antenna 15, right half antenna 16, dielectric-filled waveguide 17, the conduction band 18 of microstrip feed line 2, the ground plane 19 of microstrip feed line 2, the end face radiation arm 20 of logarithm period oscillator 4 and the bottom surface radiation arm 21 of logarithm period oscillator 4.
Embodiment
Embodiment of the present invention is: thin substrate broadband difference-beam planar horn antenna comprises the microstrip feed line 2 be arranged on medium substrate 1, the integrated horn antenna of substrate 3 and multiple logarithm period oscillator 4; First port 5 of described microstrip feed line 2 is input/output ports of this antenna, and the second port 6 of microstrip feed line 2 connects with the integrated horn antenna 3 of substrate; The integrated horn antenna 3 of substrate to be connected the first metal flat 7 and the second metal flat 8 by the first metal flat 7 being positioned at medium substrate 1 one side, the second metal flat 8 of being positioned at medium substrate 1 another side two row's metallization via hole trumpet side walls 9 with through medium substrate 1 form, width between two row's metallization via hole trumpet side walls 9 of the integrated horn antenna of substrate 3 becomes large gradually, form one tubaeformly to dehisce, the end of dehiscing is the bore face 10 of the integrated horn antenna 3 of substrate; Odd number metallization arrays of vias 11 is had to connect the first metal flat 7 and the second metal flat 8 in the integrated horn antenna 3 of substrate, the length of each metallization arrays of vias 11 is the same, the head end 12 of metallization arrays of vias 11 is inner at the integrated horn antenna 3 of substrate, and the tail end 13 of metallization arrays of vias 11 is on the bore face 10 of the integrated horn antenna 3 of substrate; In metallization arrays of vias 11, there is an intermediate metallization arrays of vias 14 that integrated for substrate horn antenna 3 is divided into a symmetrical left side half antenna 15 and right half antenna 16 two parts; Row's metallization via hole trumpet side walls 9 that two adjacent metallization arrays of vias 11 or a metallization arrays of vias 11 are adjacent, form dielectric-filled waveguide 17 with the first metal flat 7 and the second metal flat 8, in bore face 10, outer each dielectric-filled waveguide 17 is connected to a logarithm period oscillator 4.
The conduction band 18 of microstrip feed line 2 connects with the first metal flat 7, and the ground plane 19 of microstrip feed line 2 connects with the second metal flat 8.
The width of dielectric-filled waveguide 17 will make electromagnetic wave to propagate and not to be cut off wherein, and the length of dielectric-filled waveguide 17 has more than half guide wavelength.
Each logarithm period oscillator 4 has end face radiation arm 20 and bottom surface radiation arm 21 respectively on the two sides being positioned at medium substrate 1, the end face radiation arm 20 of logarithm period oscillator 4 is connected with the first metal flat 7 of the integrated horn antenna 3 of substrate, the bottom surface radiation arm 21 of logarithm period oscillator 4 is connected with the second metal flat 8 of the integrated horn antenna 3 of substrate, the end face radiation arm 20 of each logarithm period oscillator 4 and bottom surface radiation arm 21 respectively have two or plural oscillator, end face radiation arm 20 is the same with the quantity of bottom surface radiation arm 21 oscillator, and oscillator corresponding on end face radiation arm 20 and bottom surface radiation arm 21 stretches in the opposite direction.
The logarithm period oscillator 4 that the logarithm period oscillator 4 that left half antenna 15 connects and right half antenna 16 connect is symmetrical.
Metallization via hole trumpet side walls 9 is with in metallization arrays of vias 11, the spacing of two adjacent metallization via holes is less than or equals 1/10th of operation wavelength, makes the metallization via hole trumpet side walls 9 formed can be equivalent to electric wall with metallization arrays of vias 11.
When designing, the length of metallization arrays of vias 11 generally will make the length of dielectric-filled waveguide 17 have more than half guide wavelength that antenna just can be made to have larger gain.
In technique, thin substrate broadband difference-beam planar horn antenna both can adopt common printed circuit board (PCB) (PCB) technique, and the integrated circuit technologies such as LTCC (LTCC) technique or CMOS, Si substrate also can be adopted to realize.The via hole that wherein metallizes can be hollow metal through hole also can be solid metal hole, and also can be continuous print metallization wall, the shape of metal throuth hole can be circular, also can be square or other shapes.
Structurally, according to same principle, can increase or reduce the quantity of metallization arrays of vias 11, and then change quantity and the size of logarithm period oscillator 4, as long as ensure that dielectric-filled waveguide 17 can transmit main mould.
According to the above, just the present invention can be realized.
Claims (5)
1. thin substrate broadband difference-beam planar horn antenna, is characterized in that this antenna comprises the microstrip feed line (2) be arranged on medium substrate (1), the integrated horn antenna of substrate (3) and multiple logarithm period oscillator (4); First port (5) of described microstrip feed line (2) is the input/output port of this antenna, and second port (6) of microstrip feed line (2) connects with the integrated horn antenna of substrate (3); The integrated horn antenna of substrate (3) to be connected the first metal flat (7) and the second metal flat (8) by the first metal flat (7) being positioned at medium substrate (1) one side, the second metal flat (8) of being positioned at medium substrate (1) another side two rows with through medium substrate (1) via hole trumpet side walls (9) that metallizes forms, width between two rows' metallization via hole trumpet side walls (9) of the integrated horn antenna of substrate (3) becomes large gradually, form one tubaeformly to dehisce, the end of dehiscing is the bore face (10) of the integrated horn antenna of substrate (3); Odd number metallization arrays of vias (11) is had to connect the first metal flat (7) and the second metal flat (8) in the integrated horn antenna of substrate (3), the length of each metallization arrays of vias (11) is the same, the head end (12) of metallization arrays of vias (11) is inner at the integrated horn antenna of substrate (3), and the tail end (13) of metallization arrays of vias (11) is on the bore face (10) of the integrated horn antenna of substrate (3); In metallization arrays of vias (11), there is an intermediate metallization arrays of vias (14) that integrated for substrate horn antenna (3) is divided into a symmetrical left side half antenna (15) and right half antenna (16) two parts; Row's metallization via hole trumpet side walls (9) that two adjacent metallization arrays of vias (11) or metallization arrays of vias (11) are adjacent, form dielectric-filled waveguide (17) with the first metal flat (7) and the second metal flat (8), bore face (10) outward each dielectric-filled waveguide (17) be connected to a logarithm period oscillator (4);
Each logarithm period oscillator (4) has end face radiation arm (20) and bottom surface radiation arm (21) respectively on the two sides being positioned at medium substrate (1), the end face radiation arm (20) of logarithm period oscillator (4) is connected with first metal flat (7) of the integrated horn antenna of substrate (3), the bottom surface radiation arm (21) of logarithm period oscillator (4) is connected with second metal flat (8) of the integrated horn antenna of substrate (3), end face radiation arm (20) and the bottom surface radiation arm (21) of each logarithm period oscillator (4) respectively have two or plural oscillator, end face radiation arm (20) is the same with the quantity of bottom surface radiation arm (21) oscillator, and end face radiation arm (20) and the upper corresponding oscillator of bottom surface radiation arm (21) stretch in the opposite direction.
2. thin substrate broadband difference-beam planar horn antenna according to claim 1, it is characterized in that the conduction band (18) of microstrip feed line (2) connects with the first metal flat (7), the ground plane (19) of microstrip feed line (2) connects with the second metal flat (8).
3. thin substrate broadband difference-beam planar horn antenna according to claim 1, it is characterized in that the width of dielectric-filled waveguide (17) will make electromagnetic wave to propagate and not to be cut off wherein, the length of dielectric-filled waveguide (17) has more than half guide wavelength.
4. thin substrate broadband difference-beam planar horn antenna according to claim 1, is characterized in that the logarithm period oscillator (4) that left half antenna (15) connects and the logarithm period oscillator (4) that right half antenna (16) connects are symmetrical.
5. thin substrate broadband difference-beam planar horn antenna according to claim 1, it is characterized in that in described metallization via hole trumpet side walls (9) and metallization arrays of vias (11), the spacing of two adjacent metallization via holes is less than or equals 1/10th of operation wavelength, makes the metallization via hole trumpet side walls (9) of formation and metallization arrays of vias (11) can be equivalent to electric wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310617490.5A CN103594812B (en) | 2013-11-29 | 2013-11-29 | Thin substrate broadband difference-beam planar horn antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310617490.5A CN103594812B (en) | 2013-11-29 | 2013-11-29 | Thin substrate broadband difference-beam planar horn antenna |
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| Publication Number | Publication Date |
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| CN103594812A CN103594812A (en) | 2014-02-19 |
| CN103594812B true CN103594812B (en) | 2015-09-16 |
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| CN112952357A (en) * | 2021-01-22 | 2021-06-11 | 西安交通大学 | Plane combined pulse radiation antenna |
| CN114725686B (en) * | 2022-05-17 | 2024-03-12 | 安徽大学 | Logarithmic periodic antenna based on half-module rectangular metal waveguide excitation |
| CN115621722B (en) * | 2022-11-10 | 2023-12-19 | 国网江苏省电力有限公司扬州供电分公司 | Logarithmic period dipole antenna with substrate integrated double-line feed and processing method |
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| CN201498598U (en) * | 2009-06-10 | 2010-06-02 | 东南大学 | Printing log-periodic dipole array antenna |
| CN103022716B (en) * | 2012-12-21 | 2015-01-28 | 东南大学 | Planar horn antenna for phase amplitude calibration |
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