CN101609917A - The coplanar waveguide structure of applying microwave photonic crystal - Google Patents
The coplanar waveguide structure of applying microwave photonic crystal Download PDFInfo
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- CN101609917A CN101609917A CNA200810115161XA CN200810115161A CN101609917A CN 101609917 A CN101609917 A CN 101609917A CN A200810115161X A CNA200810115161X A CN A200810115161XA CN 200810115161 A CN200810115161 A CN 200810115161A CN 101609917 A CN101609917 A CN 101609917A
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Abstract
The invention discloses a kind of coplanar waveguide structure of applying microwave photonic crystal, this structure comprises: a dielectric layer (3) that is used for high-frequency transmission; Be used for a photonic crystal ground level (2) of trapped electromagnetic wave, this photonic crystal ground level (2) is connected and composed by a plurality of microwave photon cellular constructions (1), is positioned on this dielectric layer (3), and combines closely with this dielectric layer (3); A center conductor (4) that is used for propagation of electromagnetic waves, this center conductor (4) are 50 ohm of copper conductors of a L type, and 90 degree bendings take place in the lead centre position, are positioned on this dielectric layer (3), and combine closely with this dielectric layer (3).The coplanar waveguide structure of this applying microwave photonic crystal provided by the invention has effectively reduced the leakage of signal, has simplified preparation technology, and it is integrated that it is more suitable in monolithic microwave, and can improve the transmission coefficient of real co-planar waveguide.
Description
Technical field
The present invention relates to the microwave circuit preparing technical field, more specifically say, relate to a kind of coplanar waveguide structure of applying microwave photonic crystal, this structure can reduce effectively because signal imperfection problems such as the signal leakage introduced when ninety degree turn of microstrip line and losses, and can improve the transmission coefficient of co-planar waveguide among the embodiment.
Background technology
Integrated circuit (IC) design forward high-frequency, small size, the direction of multicomponent develops, and this just causes crosstalking and leaking increasingly mutually between inner each element of circuit and the transmission line, especially when holding wire turns round, has seriously restricted development of integrated circuits.Accordingly, the negative effect that how to reduce this phenomenon also is circuit design and uses a substantial task that is faced.
Photonic crystal is the cycle dielectric material with frequency band gap, since late 1980s proposes notion, has been subjected to extensive concern, and obtained developing rapidly at microwave frequency band, its application has the microwave photon antenna, microwave photon filter, microwave photon microstrip line etc.
In microstrip circuit, the realization of microwave photon generally has two kinds of methods, a kind of be the longitudinal periodicity of dielectric substrate upper edge microstrip line dig out the small cylinder unit and do not penetrate ground plane, make the periodic arrangement that on dielectric substrate, forms small cylindrical opening; Another kind method is to corrode into the aperture of periodic arrangement in ground plane upper edge microstrip line direction, and keeps dielectric substrate constant.
Different with the front three-dimensional structure is, the present invention proposes a kind of new type of microwave photonic crystal coplanar waveguide structure, spend the co-planar waveguide compact microwave photon of plane etching two dimensional surface laterally that turns round 90, effectively reduce the leakage of signal, and technology is simple, it is integrated that it is more suitable in monolithic microwave, and can improve the transmission coefficient of co-planar waveguide.
Summary of the invention
(1) technical problem that will solve
In order to solve above circuit design problem, main purpose of the present invention is to provide a kind of coplanar waveguide structure of applying microwave photonic crystal, with the leakage of effective minimizing signal, simplifies preparation technology, it is integrated that it is more suitable in monolithic microwave, and improve the transmission coefficient of co-planar waveguide.
(2) technical scheme
For achieving the above object, the invention provides a kind of coplanar waveguide structure of applying microwave photonic crystal, this structure comprises:
A dielectric layer 3 that is used for high-frequency transmission;
Be used for a photonic crystal ground level 2 of trapped electromagnetic wave, this photonic crystal ground level 2 is positioned on this dielectric layer 3, and combines closely with this dielectric layer 3; And
Be used to transmit an electromagnetic center conductor 4, this center conductor 4 is 50 ohm of copper conductors of a L type, and 90 degree bendings take place in the lead centre position, is positioned on this dielectric layer 3, and combines closely with this dielectric layer 3.
In the such scheme, the dielectric material that described dielectric layer 3 adopts is the RT/Duroid 6010 of ROGERS CORPORATION, and its dielectric constant is 10.2, and thickness is 0.635 millimeter.
In the such scheme, described photonic crystal ground level 2 is is periodically connected and composed by a plurality of microwave photon cellular constructions 1, and thickness is 0.018mm.
In the such scheme, described microwave photon cellular construction 1 is the basic structure that constitutes photonic crystal ground level 2, comprise a square metal dish, four concave structures and four long and narrow connecting lines, material all is a copper, connecting line provides extra inductance for coplanar waveguide structure, and the gap between the square metal dish provides bigger electric capacity.
In the such scheme, have a concave structure respectively around the described square metal dish, and these four concave structures are with respect to the center symmetry of this square metal dish; Described four long and narrow connecting lines are connected in the center of this square metal dish jointly, arrange that along the direction parallel arbitrary microwave photon cellular construction 1 is connected with four microwave photon cellular constructions 1 on every side by these four long and narrow connecting lines with the limit of this square metal dish.
In the such scheme, the resistance of described center conductor 4 is 50 ohm, and thickness is 0.018mm.
(3) beneficial effect
From technique scheme as can be seen, the present invention has following beneficial effect:
The present invention adopts 90 and spends the co-planar waveguide structure of the compact microwave photon of plane etching two dimensional surface laterally of turning round, and utilizes the co-planar waveguide of this structure that following advantage is arranged:
1, effectively reduces circuit because the signal leakage of turning round and bringing;
2, use two dimensional surface microwave photon structure, be compared to the general three dimension microwave photon, simplify preparation technology, more help being applied in the monolithic integrated microwave circuit.
3, can effectively promote the transmission coefficient of co-planar waveguide among the embodiment.
Description of drawings
For further specifying technology contents of the present invention, the invention will be further described below in conjunction with drawings and Examples, wherein:
Fig. 1 is the stereogram of the coplanar waveguide structure of applying microwave photonic crystal provided by the invention;
Fig. 2 is the schematic diagram of microwave photon cellular construction in the coplanar waveguide structure of applying microwave photonic crystal provided by the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
See also Fig. 1 and Fig. 2, Fig. 1 is the stereogram of the coplanar waveguide structure of applying microwave photonic crystal provided by the invention, and this structure comprises dielectric layer 3, photonic crystal ground level 2 and center conductor 4.Wherein, dielectric layer 3 is used for high-frequency transmission.Photonic crystal ground level 2 is used for trapped electromagnetic wave, and this photonic crystal ground level 2 is positioned on this dielectric layer 3, and combines closely with this dielectric layer 3.Center conductor 4 is used to transmit electromagnetic wave, and this center conductor 4 is L type coupling copper conductors, and 90 degree bendings take place in the lead centre position, is positioned on this dielectric layer 3, and combines closely with this dielectric layer 3.
The dielectric material that described dielectric layer 3 adopts is the RT/Duroid 6010 of ROGERS CORPORATION, and its dielectric constant is 10.2, and thickness is 0.635 millimeter.
Described photonic crystal ground level 2 is connected and composed by a plurality of microwave photon cellular constructions 1, and thickness is 0.018mm.Described microwave photon cellular construction 1 is the basic structure that constitutes photonic crystal ground level 2, comprise a square metal dish, four concave structures and four long and narrow connecting lines, material all is a copper, connecting line provides extra inductance for coplanar waveguide structure, and the gap between the square metal dish provides bigger electric capacity.Have a concave structure respectively around the described square metal dish, and these four concave structures are with respect to the center symmetry of this square metal dish; Described four long and narrow connecting lines are connected in the center of this square metal dish jointly, arrange that along the direction parallel arbitrary microwave photon cellular construction 1 is connected with four microwave photon cellular constructions 1 on every side by these four long and narrow connecting lines with the limit of this square metal dish.
Refer again to Fig. 1, the copper structure that photonic crystal ground level 2 is made up of microwave photon cellular construction 1 among Fig. 2 embodiment, dielectric layer 3 is RT/Duroid 6010 dielectric materials of ROGERS CORPORATION, and thickness is 0.635mm, and its dielectric constant is 10.2.Center conductor 4 is L type coupling copper conductors, and its resistance is 50 ohm, and 90 degree bendings take place in the center, and thickness is 0.018mm.
Refer again to Fig. 2, microwave photon cellular construction 1 is made up of a square metal dish and four long and narrow connecting lines, and these connecting lines provide extra inductance for co-planar waveguide, and the gap between the different metal dish then provides bigger electric capacity.Polyphone inductance and shunt capacitance be the transmission of decision-making circuit together, and this constant is than big many of traditional transmission line.When meeting the forbidden band condition, the accurate TEM mould that transmits along co-planar waveguide will be under an embargo.This structure can be good at being used for the design of compact photon crystal structure, and because it is to be engraved on the ground level, so can not cause the increase of conductor losses.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of coplanar waveguide structure of applying microwave photonic crystal is characterized in that, this structure comprises:
A dielectric layer (3) that is used for high-frequency transmission;
Be used for a photonic crystal ground level (2) of trapped electromagnetic wave, this photonic crystal ground level (2) is positioned on this dielectric layer (3), and combines closely with this dielectric layer (3); And
A center conductor (4) that is used for propagation of electromagnetic waves, this center conductor (4) are 50 ohm of copper conductors of a L type, and 90 degree bendings take place in the lead centre position, are positioned on this dielectric layer (3), and combine closely with this dielectric layer (3).
2, the coplanar waveguide structure of applying microwave photonic crystal according to claim 1 is characterized in that, the dielectric material that described dielectric layer (3) adopts is the RT/Duroid6010 of ROGERS CORPORATION, and its dielectric constant is 10.2, and thickness is 0.635 millimeter.
3, the coplanar waveguide structure of applying microwave photonic crystal according to claim 1 is characterized in that, described photonic crystal ground level (2) is is periodically connected and composed by a plurality of microwave photon cellular constructions (1), and thickness is 0.018mm.
4, the coplanar waveguide structure of applying microwave photonic crystal according to claim 3, it is characterized in that, described microwave photon cellular construction (1) is the basic structure that constitutes photonic crystal ground level (2), comprise a square metal dish, four concave structures and four long and narrow connecting lines, material all is a copper, connecting line provides extra inductance for coplanar waveguide structure, and the gap between the square metal dish provides bigger electric capacity.
5, the coplanar waveguide structure of applying microwave photonic crystal according to claim 4 is characterized in that, have a concave structure respectively around the described square metal dish, and these four concave structures is with respect to the center symmetry of this square metal dish; Described four long and narrow connecting lines are connected in the center of this square metal dish jointly, arrange that along the direction parallel arbitrary microwave photon cellular construction (1) is connected with four microwave photon cellular constructions (1) on every side by these four long and narrow connecting lines with the limit of this square metal dish.
6, the coplanar waveguide structure of applying microwave photonic crystal according to claim 1 is characterized in that, the resistance of described center conductor (4) is 50 ohm, and thickness is 0.018mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200810115161XA CN101609917A (en) | 2008-06-18 | 2008-06-18 | The coplanar waveguide structure of applying microwave photonic crystal |
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| CNA200810115161XA CN101609917A (en) | 2008-06-18 | 2008-06-18 | The coplanar waveguide structure of applying microwave photonic crystal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765578A (en) * | 2011-08-31 | 2014-04-30 | 飞思卡尔半导体公司 | Integrated circuit package |
| CN103956540A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Microstrip line dielectric phase shifter capable of restraining high-frequency radiation loss |
| CN104297842A (en) * | 2014-09-29 | 2015-01-21 | 欧阳征标 | Two-dimensional square lattice photonic crystal with cross-shaped connecting rods and rotating square rods |
| CN110571629A (en) * | 2019-09-09 | 2019-12-13 | 金华伏安光电科技有限公司 | Capacitance type photon state microwave quantum state regulating and controlling converter and system |
-
2008
- 2008-06-18 CN CNA200810115161XA patent/CN101609917A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103765578A (en) * | 2011-08-31 | 2014-04-30 | 飞思卡尔半导体公司 | Integrated circuit package |
| CN103765578B (en) * | 2011-08-31 | 2016-09-14 | 飞思卡尔半导体公司 | Integrated antenna package |
| CN103956540A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Microstrip line dielectric phase shifter capable of restraining high-frequency radiation loss |
| CN103956540B (en) * | 2014-04-29 | 2017-03-22 | 中国人民解放军国防科学技术大学 | Microstrip line dielectric phase shifter capable of restraining high-frequency radiation loss |
| CN104297842A (en) * | 2014-09-29 | 2015-01-21 | 欧阳征标 | Two-dimensional square lattice photonic crystal with cross-shaped connecting rods and rotating square rods |
| WO2016050185A1 (en) * | 2014-09-29 | 2016-04-07 | 深圳大学 | Two-dimensional square lattice photonic crystal having cross-shaped connecting rods and rotating square rods |
| CN104297842B (en) * | 2014-09-29 | 2017-03-22 | 深圳市浩源光电技术有限公司 | Two-dimensional square lattice photonic crystal with cross-shaped connecting rods and rotating square rods |
| CN110571629A (en) * | 2019-09-09 | 2019-12-13 | 金华伏安光电科技有限公司 | Capacitance type photon state microwave quantum state regulating and controlling converter and system |
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Application publication date: 20091223 |