CN204538160U - Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change - Google Patents
Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change Download PDFInfo
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- CN204538160U CN204538160U CN201520247775.9U CN201520247775U CN204538160U CN 204538160 U CN204538160 U CN 204538160U CN 201520247775 U CN201520247775 U CN 201520247775U CN 204538160 U CN204538160 U CN 204538160U
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- ground plate
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Abstract
The open coplanar waveguide ultra wide band low pass filter based on conical gradual change of the utility model comprises medium substrate, metal center conduction band and ground plate; In the middle of one of them surface of medium substrate, print is covered with metal center conduction band, and the two ends of this metal center conduction band are extended down to the edge of medium substrate a pair opposite side respectively, and metal center conduction band is perpendicular to a pair opposite side of aforementioned medium substrate; Heart conduction band both sides print metallisation ground plate in a metal, on ground plate, symmetrical etching pbg structure forms pbg structure ground plate respectively, there is gap, and be positioned at same plane between pbg structure ground plate and metal center conduction band; Pbg structure ground plate is the ground plate cell array of the capable n row of m, and ground plate unit comprises the rectangle sheet metal of two vertical placements, center superposition, and the long limit of each rectangle sheet metal is longer than the broadside of another rectangle sheet metal.The pbg structure of the utility model application conical gradual change achieves the ultra broadband low pass filter based on co-planar waveguide.
Description
Technical field
The utility model relates to the coplanar waveguide ultra wide band low pass filter based on conical gradual change, belongs to microwave technical field.
Background technology
Along with the fast development of the Technology of Ultra and the raising day by day of microwave device integrated level, develop the focus that microwave monolithic integrated circuit (MMIC) becomes microwave regime energetically.
The application of microwave technology is throughout the every aspect that modern society's life is produced, achieving great success particularly acquired by satellite communication, radar communication, radio communication and moving communicating field, simultaneously, its vitality of becoming stronger day by day and wide development space also to self developmental research propose more requirements and new challenge, moreover the rapid advances pair microwave technology closely-related with it of informationized society it is also proposed increasing requirement.In microwave regime, frequency spectrum resource is limited, the exploitation of medium and low frequency section have been tending towards saturated, the well-to-do high-frequency frequency range of frequency spectrum resource becomes the direction that people make great efforts development and utilization, and this just to require in microwave system device more miniaturized, more integrated and broadband and light weight and inexpensive.For meeting the growing demand of microwave regime, on the one hand, there is various microwave planar transmission line, as fin line, the line of rabbet joint, the micro-band of suspension, co-planar waveguide and coplanar striplines etc.On the other hand, the new construction new technology of microwave circuit is also constantly suggested as photonic band gap structure (Photonic Band-Gap, PBG), defect ground structure, substrate integration wave-guide like the mushrooms after rain and applies.Co-planar waveguide because of its radiation loss little, short circuit does not need via hole on dielectric-slab, and the plurality of advantages such as between adjacent signals line crosstalk is less is by extensive cognition.
But while existing application pbg structure realizes precipitous dark stopband, the insertion loss of the passband of filter is very large, can not meet the demand of people.
Utility model content
The purpose of this utility model, is to provide a kind of pbg structure applying conical gradual change to achieve a kind of ultra broadband low pass filter design based on co-planar waveguide.
In order to reach above-mentioned purpose, solution of the present utility model is:
Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, comprise medium substrate, metal center conduction band and ground plate; In the middle of described one of them surface of medium substrate, print is covered with metal center conduction band, and the two ends of this metal center conduction band are extended down to the edge of medium substrate a pair opposite side respectively, and metal center conduction band is perpendicular to a pair opposite side of aforementioned medium substrate; Heart conduction band both sides print metallisation ground plate in a metal, on ground plate, symmetrical etching pbg structure forms pbg structure ground plate respectively, there is gap, and be positioned at same plane between pbg structure ground plate and metal center conduction band; Described pbg structure ground plate is the ground plate cell array of the capable n row of m, m is even number, n is odd number, described ground plate unit comprises the rectangle sheet metal of two vertical placements, center superposition, and the long limit of each rectangle sheet metal is longer than the broadside of another rectangle sheet metal; Adjacently connected by the broadside of rectangle sheet metal between Slab element, and the number of ground plate unit reduces gradually to both sides in a lateral direction centered by metal center conduction band.
Further, described m is 10.
Further, described n is 11.
Further, described medium substrate is rectangle.
Further, described medium substrate is Rogers6010 dielectric-slab.
After adopting such scheme, the utility model adopts coplanar waveguide transmission line, and being easy to integrated, is the meaningful exploration of co-planar waveguide in conjunction with the planar circuit of pbg structure.And design and adjustment decrease difficulty of processing at same plane, reduce processing cost.Adopt the pbg structure of conical gradual change, realize controlled stopband, also for the exploitation of super broad band radio communication filter provides technological reserve.
Accompanying drawing explanation
Fig. 1 is the tomograph of the utility model coplanar waveguide ultra wide band low pass filter.
Fig. 2 is tomograph the utility model medium substrate printing metallisation center conduction band.
Fig. 3 is the vertical view of the utility model coplanar waveguide ultra wide band low pass filter.
Fig. 4 is the plane graph of the utility model ground plate unit.
Fig. 5 is the analogous diagram of the utility model coplanar waveguide ultra wide band low pass filter.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
As shown in Figure 1, the coplanar waveguide ultra wide band low pass filter based on conical gradual change comprises medium substrate 1, metal center conduction band 2 and ground plate 3.
As shown in Figure 2, described medium substrate 1 is rectangle, in the middle of one of them surface of medium substrate 1, print is covered with metal center conduction band 2, and the two ends of this metal center conduction band 2 are extended down to the edge of medium substrate 1 a pair opposite side respectively, and metal center conduction band 2 is perpendicular to a pair opposite side of aforementioned medium substrate.
As shown in Figure 3, heart conduction band 2 both sides print metallisation ground plate 3 in a metal, on ground plate 3, symmetrical etching pbg structure forms pbg structure ground plate 3 respectively, there is gap, and be positioned at same plane between pbg structure ground plate 3 and metal center conduction band 2.
Described pbg structure ground plate 3 is ground plate unit 4 array of the capable n row of m, and m is even number, n is odd number.Shown in composition graphs 4, described ground plate unit 4 comprises the rectangle sheet metal of two vertical placements, center superposition, and the long limit of each rectangle sheet metal is longer than the broadside of another rectangle sheet metal.Adjacently connected by the broadside of rectangle sheet metal between Slab element 4, and the number of ground plate unit 4 reduces gradually to both sides in a lateral direction centered by metal center conduction band 2.
In the utility model most preferred embodiment, described medium substrate 1 adopts Rogers 6010 dielectric-slab, and its dielectric constant is 10.2, and thickness is 0.635 millimeter.Described m is 10, described n is 11.
Coplanar waveguide ultra wide band low pass filter of the present utility model has good band-pass behavior, and as shown in Figure 5, ordinate represents S parameter, and abscissa represents frequency, and wherein S11 represents the reflection parameters of filtering, and S21 represents the transformation parameter of filter.Coplanar waveguide ultra wide band low pass filter simulation result of the present utility model obtains passband and extends to 11.5GHz, the coplanar waveguide ultra wide band low pass filter of-30dB stopband 13.6GHz ~ 17.9GHz, coplanar waveguide ultra wide band low pass filter based on conical gradual change has ultra broadband operating characteristic, compact conformation, is easy to features such as making, volume is light and handy, in the planar circuit design and devdlop of co-planar waveguide in conjunction with new construction, have huge reference value.
The cellular construction size adjustable of the taper pbg structure of conduction band both sides, co-planar waveguide center in the utility model and the vertical and horizontal arrangement cycle adjustable.And the line number of performance of filter to the taper pbg structure of metal center conduction band 2 both sides is more insensitive, the Electro Magnetic Compatibility of filter is stronger.
Metal center conduction band 2 of the present utility model obeys two principles apart from the distance of both sides taper pbg structure: one is make characteristic impedance close to 50 ohm, and to mate practical application, two is the requirements meeting processing technology apart from the selection of size.
The utility model is an individual layer circuit structure based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, medium substrate in circuit structure only need comprise the conical gradual change pbg structure of metal center conduction band and next-door neighbour metal center conduction band both sides at one side print coating metal layer, and the another side of medium substrate does not have conductor layer covering to process.The pbg structure of conical gradual change is all symmetrical about transverse axis and the longitudinal axis, and the number of the ground plate unit of the pbg structure of composition conical gradual change is being laterally gradual change, the forbidden band of pbg structure at different frequency range can realized by the size and its arrangement cycle regulating the ground plate unit of composition conical gradual change pbg structure.
The utility model adopts coplanar waveguide transmission line, and being easy to integrated, is the meaningful exploration of co-planar waveguide in conjunction with the planar circuit of pbg structure.And design and adjustment decrease difficulty of processing at same plane, reduce processing cost.Adopt the pbg structure of conical gradual change, realize controlled stopband, also for the exploitation of super broad band radio communication filter provides technological reserve.
Above embodiment is only and technological thought of the present utility model is described; protection range of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection range.
Claims (5)
1. based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, it is characterized in that: comprise medium substrate, metal center conduction band and ground plate; In the middle of described one of them surface of medium substrate, print is covered with metal center conduction band, and the two ends of this metal center conduction band are extended down to the edge of medium substrate a pair opposite side respectively, and metal center conduction band is perpendicular to a pair opposite side of aforementioned medium substrate; Heart conduction band both sides print metallisation ground plate in a metal, on ground plate, symmetrical etching pbg structure forms pbg structure ground plate respectively, there is gap, and be positioned at same plane between pbg structure ground plate and metal center conduction band; Described pbg structure ground plate is the ground plate cell array of the capable n row of m, m is even number, n is odd number, described ground plate unit comprises the rectangle sheet metal of two vertical placements, center superposition, and the long limit of each rectangle sheet metal is longer than the broadside of another rectangle sheet metal; Adjacently connected by the broadside of rectangle sheet metal between Slab element, and the number of ground plate unit reduces gradually to both sides in a lateral direction centered by metal center conduction band.
2., as claimed in claim 1 based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, it is characterized in that: described m is 10.
3., as claimed in claim 1 based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, it is characterized in that: described n is 11.
4., as claimed in claim 1 based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, it is characterized in that: described medium substrate is rectangle.
5., as claimed in claim 1 based on the coplanar waveguide ultra wide band low pass filter of conical gradual change, it is characterized in that: described medium substrate is Rogers6010 dielectric-slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247775.9U CN204538160U (en) | 2015-04-23 | 2015-04-23 | Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change |
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| CN201520247775.9U CN204538160U (en) | 2015-04-23 | 2015-04-23 | Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change |
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| CN204538160U true CN204538160U (en) | 2015-08-05 |
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| CN201520247775.9U Expired - Fee Related CN204538160U (en) | 2015-04-23 | 2015-04-23 | Based on the coplanar waveguide ultra wide band low pass filter of conical gradual change |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759330A (en) * | 2022-03-25 | 2022-07-15 | 北京邮电大学 | Novel mode conversion transmission line |
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2015
- 2015-04-23 CN CN201520247775.9U patent/CN204538160U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759330A (en) * | 2022-03-25 | 2022-07-15 | 北京邮电大学 | Novel mode conversion transmission line |
| CN114759330B (en) * | 2022-03-25 | 2023-04-11 | 北京邮电大学 | Novel mode conversion transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: Nanjing Post & Telecommunication Univ. Contract record no.: 2016320000210 Denomination of utility model: Co-planar waveguide ultra wide band low pass filter based on toper gradual change Granted publication date: 20150805 License type: Common License Record date: 20161114 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: Nanjing Post & Telecommunication Univ. Contract record no.: 2016320000210 Date of cancellation: 20180116 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20180423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |