CN101938023A - Bragg rectangular two-dimensional electromagnetic band gap (EBG) high-impedance backboard plane structure - Google Patents
Bragg rectangular two-dimensional electromagnetic band gap (EBG) high-impedance backboard plane structure Download PDFInfo
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- CN101938023A CN101938023A CN2010102249523A CN201010224952A CN101938023A CN 101938023 A CN101938023 A CN 101938023A CN 2010102249523 A CN2010102249523 A CN 2010102249523A CN 201010224952 A CN201010224952 A CN 201010224952A CN 101938023 A CN101938023 A CN 101938023A
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- 239000002184 metal Substances 0.000 claims abstract description 39
- 230000000737 periodic effect Effects 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 210000003850 cellular structure Anatomy 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
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Abstract
The invention discloses a Bragg two-dimensional electromagnetic band gap (EBG) high-impedance backboard plane structure which is an ordered topological structure formed by single unit cell. The plane structure is formed in such a way that a plurality of plane structure units form an ordered periodic structure on a metal plate; each plane structure unit comprises an outer metal rectangular curve (1), an inner metal rectangular curve (2), an inner connecting line (3) and an outer connecting line (4), wherein the outer metal rectangular curve (1) is connected with the inner metal rectangular curve (2) by the inner connecting line (3); and all the plane structure units are connected by the outer connecting line (4). In the structure, a novel EBG backboard unit cell structure is designed on the basis of the filter characteristic of Bragg structure band gap transmission. Compared with the traditional classic coplanar compact type EBG structure, the structure has larger stopband width, stronger stopband attenuation and straighter transmission curve edge and can more favorably meet the requirement of a slow wave structure on the surface wave inhibition of a microwave frequency band.
Description
Technical field
The present invention relates to a kind of plan periodic structure of two-dimensional electromagnetic band gap high impedance backboard, belong to the physical electronics technical field.
Background technology
EBG (Electromagnetic Bandgap) also is called photonic crystal.Its research is obtaining development at full speed over nearest twenties years.The periodic arrangement of any different medium and metal can form electro-magnetic bandgap, some of them ad hoc structure (lattice types, cycle, packing ratio etc.) electromagnetic crystals has " electromagnetic forbidden band " in electronics forbidden band in the similar semi-conducting material, and promptly the electromagnetic wave of characteristic frequency can't be propagated in structure.
For miniaturization and the complanation that realizes travelling wave tube, utilize the medium substrate in the EBG structure replacement printed circuit travelling-wave tube, can improve the problem of decrease in efficiency, realize the printed circuitization of travelling wave tube; Working medium/metal mixed formula EBG comes the substituted metal waveguide, but the suppression mode competition improves important structure---the transmission performance of slow wave circuit in the travelling wave tube.
The EBG back board structure mainly is divided into two kinds of mushroom-shaped and coplane compacts, and the latter is easier to processing, thereby extensively adopts.Classical coplane compact EBG structure still has room for promotion widely on transmission characteristics such as bandwidth and attenuation amplitude.
Summary of the invention
Technical problem: in view of this, the objective of the invention is to propose a kind of novel Prague rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure, can under same size and frequency requirement, produce wideer bandwidth of rejection and stronger stop band attenuation.
Technical scheme: a kind of Prague of the present invention rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure is formed orderly periodic structure by a plurality of planar structures unit and is formed on metallic plate, each planar structure unit is made up of outer metal rectangular curve, interior metal rectangular curve, connection wire, outer connecting line; Be connected by connection wire between outer metal rectangular curve and the interior metal rectangular curve, connect by outer connecting line between each planar structure unit.
The planar structure unit is double-layer structure or sandwich construction, during double-layer structure, is made up of outer metal rectangular curve and interior metal rectangular curve; During sandwich construction, insert similar structures again between metal rectangular curve and the interior metal rectangular curve outside, and connect by connection wire respectively.
Outer metal rectangular curve, interior metal rectangular curve are rectangle or circular or other closed curve.
Forming orderly periodic structure by a plurality of planar structures unit on metallic plate is four directions cycle, hexagonal cycle or other periodic structure; Connect by connecting line between each unit.
Radially there is the one dimension periodic structure of refractive index in the principle of the invention based on bragg fiber, can regard 1-D photon crystal as.Consider that Bragg grating has the filtering characteristic of band gap transmission, the geometrical feature of using for reference bragg fiber designs novel two-dimentional EBG structure.Bragg fiber radially has the multi-layer annular structure, for plane EBG, adopts the nested of two loop configuration, obtains annular EBG structure.Comparatively speaking, many than the rectangle difficulty of loop configuration processing.Thereby under the prerequisite that topological structure remains unchanged, make annular the rectangular configuration of right angle into, can well keep the filtering characteristic that bragg fiber has.
Beneficial effect: by transmission characteristic emulation to the microstrip line device that adopts this structure, the present invention compares with existing classical coplane compact EBG structure, the bandwidth of rejection of this structure is bigger, stopband attenuation is stronger, the transmission curve edge is more steep, can better meet the requirement of slow wave structure for the surface wave inhibition of microwave frequency band.
Description of drawings
The invention will be further elaborated below in conjunction with accompanying drawing.
Fig. 1 is the single cellular physical dimension figure of Prague of the present invention rectangle two dimension EBG high impedance backboard planar structure;
Fig. 2 is the dispersion curve of the single cellular of the present invention;
Fig. 3 is the EBG structure at the back side in the microstrip line emulation of the present invention's 3 * 6 cellular periodic structures;
Fig. 4 is the transfer curve of the microstrip line of the present invention's 3 * 6 cellular periodic structures.
Embodiment
Prague of the present invention rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure is formed orderly periodic structure by a plurality of planar structures unit and is formed on metallic plate, each planar structure unit is made up of outer metal rectangular curve 1, interior metal rectangular curve 2, connection wire 3, outer connecting line 4; Be connected by connection wire 3 between outer metal rectangular curve 1 and the interior metal rectangular curve 2, connect by outer connecting line 4 between each planar structure unit.
The planar structure unit is double-layer structure or sandwich construction, during double-layer structure, is made up of with interior metal rectangular curve 2 outer metal rectangular curve 1; During sandwich construction, insert similar structures again between metal rectangular curve 1 and the interior metal rectangular curve 2 outside, and connect by connection wire 3 respectively.
Outer metal rectangular curve 1, interior metal rectangular curve 2 can be rectangle or circular or other closed curve.
Forming orderly periodic structure by a plurality of planar structures unit on metallic plate is four directions cycle, hexagonal cycle or other periodic structure; Connect by connecting line 5 between each unit.
Be illustrated in figure 1 as the new EBG cellular structure that proposes of the present invention, black part is divided into metal; The dispersion curve of Fig. 2 for obtaining for single cellular structure simulation, abscissa is the phase shift of from 0 to 360 degree, ordinate is a frequency, article 5, curve is represented pattern 1 dispersion curve to pattern 5 respectively from low to high respectively, and two dotted lines be the light based on the middle light velocity of dielectric material (dielectric constant 10.2).Be the transmission band gap between pattern 1 and the pattern 2, be not exclusively to transmit band gap herein, i.e. the ripple of this frequency range can't be propagated in the phase shift of some scope.Fig. 3 is the back side figure of the microstrip line simulation architecture of 3 * 6 cellular periodic structures, is two-dimentional EBG periodic structure of the present invention.Fig. 4 is the transfer curve of the microstrip line of 3 * 6 cellular periodic structures, and can see has tangible band resistance transmission characteristic near 10GHz, and decay is very strong, and the edge is very precipitous.
Claims (4)
1. Prague rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure, it is characterized in that this planar structure forms orderly periodic structure by a plurality of planar structures unit and form on metallic plate, each planar structure unit is made up of outer metal rectangular curve (1), interior metal rectangular curve (2), connection wire (3), outer connecting line (4); Be connected by connection wire (3) between outer metal rectangular curve (1) and the interior metal rectangular curve (2), connect by outer connecting line (4) between each planar structure unit.
2. Prague as claimed in claim 1 rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure, it is characterized in that the planar structure unit is double-layer structure or sandwich construction, during double-layer structure, form by outer metal rectangular curve (1) and interior metal rectangular curve (2); During sandwich construction, insert similar structures again between metal rectangular curve (1) and the interior metal rectangular curve (2) outside, and connect by connection wire (3) respectively.
3. Prague as claimed in claim 1 or 2 rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure is characterized in that outer metal rectangular curve (1), interior metal rectangular curve (2) are rectangle or circular or other closed curve.
4. as Prague rectangle two-dimensional electromagnetic band gap high impedance backboard planar structure as described in the claim 1,2 or 3, it is characterized in that forming orderly periodic structure by a plurality of planar structures unit on metallic plate is four directions cycle, hexagonal cycle or other periodic structure; Connect by connecting line (5) between each unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010224952 CN101938023B (en) | 2010-07-13 | 2010-07-13 | Bragg rectangular two-dimensional electromagnetic band gap (EBG) high-impedance backboard plane structure |
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| CN 201010224952 CN101938023B (en) | 2010-07-13 | 2010-07-13 | Bragg rectangular two-dimensional electromagnetic band gap (EBG) high-impedance backboard plane structure |
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| CN101938023A true CN101938023A (en) | 2011-01-05 |
| CN101938023B CN101938023B (en) | 2013-06-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131343A (en) * | 2011-03-17 | 2011-07-20 | 南京大学 | Ultra wide band electromagnetic band gap structure for suppressing ground bounce noise of high speed circuit/microwave circuit |
| CN102522299A (en) * | 2011-12-28 | 2012-06-27 | 东南大学 | Electromagnetic band gap structure, electromagnetic band gap high-impedance substrate and planar travelling wave tube |
| CN104112887A (en) * | 2014-07-09 | 2014-10-22 | 电子科技大学 | Uniplanar compact electromagnetic band gap structure |
| CN105552543A (en) * | 2016-01-18 | 2016-05-04 | 张晓燕 | Base station antenna for 2G/3G frequency band based on electromagnetic band gap reflection base plate |
| CN113178693A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Circular polarization small antenna with inverted mushroom nail structure |
| CN113178692A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Inverted mushroom nail structure miniaturized antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242019A (en) * | 2008-03-11 | 2008-08-13 | 东南大学 | Periodical slow wave structure for 2-D electromagnetic belt gap plane crossing wave guide |
| JP2008236027A (en) * | 2007-03-16 | 2008-10-02 | Nec Corp | Common mode current suppression ebg filter |
| CN201845843U (en) * | 2010-07-13 | 2011-05-25 | 东南大学 | Planar structure of rectangular and annular EBG (electromagnetic band gap) high-impedance back plate |
-
2010
- 2010-07-13 CN CN 201010224952 patent/CN101938023B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236027A (en) * | 2007-03-16 | 2008-10-02 | Nec Corp | Common mode current suppression ebg filter |
| CN101242019A (en) * | 2008-03-11 | 2008-08-13 | 东南大学 | Periodical slow wave structure for 2-D electromagnetic belt gap plane crossing wave guide |
| CN201845843U (en) * | 2010-07-13 | 2011-05-25 | 东南大学 | Planar structure of rectangular and annular EBG (electromagnetic band gap) high-impedance back plate |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131343A (en) * | 2011-03-17 | 2011-07-20 | 南京大学 | Ultra wide band electromagnetic band gap structure for suppressing ground bounce noise of high speed circuit/microwave circuit |
| CN102522299A (en) * | 2011-12-28 | 2012-06-27 | 东南大学 | Electromagnetic band gap structure, electromagnetic band gap high-impedance substrate and planar travelling wave tube |
| CN104112887A (en) * | 2014-07-09 | 2014-10-22 | 电子科技大学 | Uniplanar compact electromagnetic band gap structure |
| CN104112887B (en) * | 2014-07-09 | 2017-04-12 | 电子科技大学 | Uniplanar compact electromagnetic band gap structure |
| CN105552543A (en) * | 2016-01-18 | 2016-05-04 | 张晓燕 | Base station antenna for 2G/3G frequency band based on electromagnetic band gap reflection base plate |
| CN113178693A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Circular polarization small antenna with inverted mushroom nail structure |
| CN113178692A (en) * | 2021-05-13 | 2021-07-27 | 上海大学 | Inverted mushroom nail structure miniaturized antenna |
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| CN101938023B (en) | 2013-06-05 |
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