CN205452493U - Coplane waveguide bandpass filter based on novel split ring resonator structure - Google Patents
Coplane waveguide bandpass filter based on novel split ring resonator structure Download PDFInfo
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- CN205452493U CN205452493U CN201620172601.5U CN201620172601U CN205452493U CN 205452493 U CN205452493 U CN 205452493U CN 201620172601 U CN201620172601 U CN 201620172601U CN 205452493 U CN205452493 U CN 205452493U
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Abstract
The utility model discloses a coplane waveguide bandpass filter based on novel split ring resonator structure, gap structure in dielectric substrate, central conduction band, central conduction band, the metal grounding plate of central conduction band both sides, the ribbon metallic who connects both sides metal grounding plate, the split ring resonator structure that corresponds with each gap structure, the metal throuth hole of being connected split ring resonator structure and metal grounding plate. Wherein, the gap structural formation stop band of co -planar waveguide center conduction band, the ribbon metallic who connects both sides metal grounding plate is used for restrain tank drawing die formula, and the split ring resonator structure is used for producing the passband, and the metal throuth hole is used for deepening the passband and the outer frequency selection nature of elevator belt. The utility model discloses an in central conduction band loading gap structure to pass gap structural connection both sides metal grounding plate through ribbon metallic, further reduced the electric size of split ring resonator structure, possess better outband characteristic.
Description
Technical field
This utility model relates to coplanar wave guide bandpass filter based on novel opening resonant ring structure, belongs to microwave technical field.
Background technology
Traditional opening resonance loop structure has less electric size, has simultaneously and has higher figure of merit, and therefore this structure receives publicity once proposing, and it is widely used in the field of structure miniaturization band filter.When opening resonance loop structure closes with coplanar waveguide junction, the mode being typically employed in co-planar waveguide center conduction band series capacitance or shunt inductance realizes band filter, but due to the existence of parasitic passband, therefore the performance outside band has to be hoisted.
Utility model content
Technical problem to be solved in the utility model is: provide coplanar wave guide bandpass filter based on novel opening resonant ring structure, gap structure is introduced in the center conduction band of co-planar waveguide, and use strip metal to connect both sides metal ground plate, inhibit line of rabbet joint pattern, it is consequently formed stopband, loads the novel opening resonant ring structure having less electricity size, when resonant ring works, a narrow passband is produced near resonant frequency, it is achieved thereby that miniaturization band filter.
This utility model is for solving above-mentioned technical problem by the following technical solutions:
Coplanar wave guide bandpass filter based on novel opening resonant ring structure, including dielectric substrate, the centre of dielectric substrate upper surface is provided with center conduction band, and the two ends of center conduction band extend respectively to the edge of a pair opposite side of dielectric substrate, and center conduction band is perpendicular to a pair opposite side of aforementioned dielectric substrate；Being provided with the gap structure of two a pair opposite side being parallel to aforementioned dielectric substrate on the conduction band of center, the both sides of center conduction band are additionally provided with metal ground plate, and the metal ground plate of conduction band both sides, center connects by being each passed through two ribbon metals of two gap structures；
Dielectric substrate lower surface is positioned at immediately below each gap structure and is provided with a centrosymmetric opening resonance loop structure, opening resonance loop structure includes the most end to end first to the 7th metal band, wherein, second, 4th, 6th metal band is parallel to each other and adjacent spacing between the two is equal, first, 3rd metal band is all vertical with the second metal band, 5th, 7th metal band is all vertical with the 6th metal band, first, fifth metal band is on same straight line, 3rd, 7th metal band is on same straight line, first, 7th metal band length is identical and length less than second and the 4th spacing between metal band；Opening resonance loop structure is symmetrical about the broken line in conduction band direction, dielectric substrate parallel center；It is provided with metal throuth hole, with open communication resonant ring structure and the metal ground plate of dielectric substrate upper surface at two end points of opening resonance loop structure.
As a preferred version of the present utility model, said two gap structure is about the waveguide wavelength that distance is 1/4th between the centrosymmetry of center conduction band, and two gap structures.
As a preferred version of the present utility model, the length of described second, the four, the 6th metal bands is identical.
As a preferred version of the present utility model, the characteristic impedance of the co-planar waveguide of described dielectric substrate upper surface is 50 ohm.
As a preferred version of the present utility model, described dielectric substrate is Rogers4003 dielectric-slab.
As a preferred version of the present utility model, described dielectric substrate is rectangle.
This utility model uses above technical scheme compared with prior art, has following technical effect that
1, this utility model is when realizing coplanar wave guide bandpass filter by loading gap structure at center conduction band, introduces electric capacity, enhances the decay of the outer low frequency end of passband；Connect both sides metal ground plate by strip metal through gap structure, it is ensured that during work, the current potential of both sides is consistent, thus reach to suppress the effect of line of rabbet joint pattern, it is to avoid use conventional air bridge, process easier.
2, this utility model uses novel opening resonant ring structure, and compared with tradition split ring resonator, this new structure is under identical physical size, and operating frequency is lower, therefore has less electric size, has reached the requirement of miniaturization；Can change operating frequency by the physical size of regulation novel opening resonant ring structure, controllability is strong；By increasing the number of novel opening resonant ring structure, the bandwidth of wave filter can be widened.
3, this utility model is by introducing metal throuth hole, solves when tradition split ring resonator closes with coplanar waveguide junction and causes coupling more weak shortcoming owing to medium substrate is thicker, is integrally improved the performance of this structure；Novel opening resonant ring structure is connected with the metal ground plate of co-planar waveguide, at the operating frequencies, produces stronger resonance, improve band-pass behavior；Improving out-band performance, the frequency selectivity of wave filter is improved.
Accompanying drawing explanation
Fig. 1 is the three-dimensional layering schematic diagram of this utility model coplanar wave guide bandpass filter based on novel opening resonant ring structure.
Fig. 2 is the schematic diagram of this utility model medium substrate upper surface.
Fig. 3 is this utility model split shed resonant ring structural representation.
Wherein, 1 is dielectric substrate, conduction band centered by 2, and 3 is gap structure, and 4 is strip metal, and 5 is metal ground plate, and 6 is opening resonance loop structure, and 7 is metal throuth hole.
Fig. 4 is the emulation S parameter figure of this utility model embodiment.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this utility model, and can not be construed to restriction of the present utility model.
This utility model coplanar wave guide bandpass filter based on novel opening resonant ring structure, as it is shown in figure 1, include dielectric substrate.As in figure 2 it is shown, the centre of dielectric substrate upper surface is provided with center conduction band, load gap structure in the middle of the conduction band of center, and use the strip metal through gap structure to connect the metal ground plate of conduction band both sides, center；The two ends of center conduction band extend respectively to the edge of a pair opposite side of dielectric substrate, and center conduction band is perpendicular to a pair opposite side of aforesaid dielectric substrate；The both sides of center conduction band are additionally provided with metal ground plate.The waveguide wavelength that distance is 1/4th between two gap structures, the waveguide wavelength that distance is 1/4th of left side gap structure to dielectric substrate left side, the waveguide wavelength that distance is 1/4th of right side gap structure to dielectric substrate right edge.
Dielectric substrate lower surface is positioned at below each gap structure and is provided with a centrosymmetric opening resonance loop structure, as shown in Figure 3, opening resonance loop structure includes the most end to end first to the 7th metal band, wherein, second, 4th, 6th metal band is parallel to each other and adjacent spacing between the two is equal, first, 3rd metal band is all vertical with the second metal band, 5th, 7th metal band is all vertical with the 6th metal band, first, fifth metal band is on same straight line, 3rd, 7th metal band is on same straight line, first, 7th metal band length is identical and length less than second and the 4th spacing between metal band；Opening resonance loop structure is symmetrical about the broken line of dielectric substrate long side direction；It is provided with metal throuth hole, with open communication resonant ring and the metal ground plate of dielectric substrate upper surface at two end points of split ring resonator.
In embodiment of the present utility model, medium substrate uses Rogers4003 dielectric-slab, and dielectric constant is 3.55, and thickness is 0.8 millimeter.As shown in Figure 4, transverse axis Frequency represents frequency (GHz), longitudinal axis S-parameter represents S parameter (dB), the band filter of the present embodiment is functional, center operating frequency is 4.8GHz, three dB bandwidth is 4.65GHz-4.9GHz, and in stopband, at low frequency, stopband suppresses at below-40dB.As can be seen here, this utility model coplanar wave guide bandpass filter based on novel opening resonant ring structure is that co-planar waveguide is combined with the success of opening resonance loop structure, there is miniaturization, high performance feature, the planar circuit combining new construction at co-planar waveguide designs and has huge reference value in application.
Above example only illustrates technological thought of the present utility model; protection domain of the present utility model can not be limited with this; every according to the technological thought that the utility model proposes, any change done on the basis of technical scheme, within each falling within this utility model protection domain.
Claims (6)
1. coplanar wave guide bandpass filter based on novel opening resonant ring structure, including dielectric substrate, it is characterized in that, the centre of dielectric substrate upper surface is provided with center conduction band, the two ends of center conduction band extend respectively to the edge of a pair opposite side of dielectric substrate, and center conduction band is perpendicular to a pair opposite side of aforementioned dielectric substrate；Being provided with the gap structure of two a pair opposite side being parallel to aforementioned dielectric substrate on the conduction band of center, the both sides of center conduction band are additionally provided with metal ground plate, and the metal ground plate of conduction band both sides, center connects by being each passed through two ribbon metals of two gap structures；
Dielectric substrate lower surface is positioned at immediately below each gap structure and is provided with a centrosymmetric opening resonance loop structure, opening resonance loop structure includes the most end to end first to the 7th metal band, wherein, second, 4th, 6th metal band is parallel to each other and adjacent spacing between the two is equal, first, 3rd metal band is all vertical with the second metal band, 5th, 7th metal band is all vertical with the 6th metal band, first, fifth metal band is on same straight line, 3rd, 7th metal band is on same straight line, first, 7th metal band length is identical and length less than second and the 4th spacing between metal band；Opening resonance loop structure is symmetrical about the broken line in conduction band direction, dielectric substrate parallel center；It is provided with metal throuth hole, with open communication resonant ring structure and the metal ground plate of dielectric substrate upper surface at two end points of opening resonance loop structure.
Coplanar wave guide bandpass filter based on novel opening resonant ring structure the most according to claim 1, it is characterised in that said two gap structure is about the waveguide wavelength that distance is 1/4th between the centrosymmetry of center conduction band, and two gap structures.
Coplanar wave guide bandpass filter based on novel opening resonant ring structure the most according to claim 1, it is characterised in that the length of described second, the four, the 6th metal bands is identical.
Coplanar wave guide bandpass filter based on novel opening resonant ring structure the most according to claim 1, it is characterised in that the characteristic impedance of the co-planar waveguide of described dielectric substrate upper surface is 50 ohm.
Coplanar wave guide bandpass filter based on novel opening resonant ring structure the most according to claim 1, it is characterised in that described dielectric substrate is Rogers4003 dielectric-slab.
Coplanar wave guide bandpass filter based on novel opening resonant ring structure the most according to claim 1, it is characterised in that described dielectric substrate is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172601.5U CN205452493U (en) | 2016-03-07 | 2016-03-07 | Coplane waveguide bandpass filter based on novel split ring resonator structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620172601.5U CN205452493U (en) | 2016-03-07 | 2016-03-07 | Coplane waveguide bandpass filter based on novel split ring resonator structure |
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| CN201620172601.5U Expired - Fee Related CN205452493U (en) | 2016-03-07 | 2016-03-07 | Coplane waveguide bandpass filter based on novel split ring resonator structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560356A (en) * | 2018-11-22 | 2019-04-02 | 深圳大学 | A kind of double frequency filter |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560356A (en) * | 2018-11-22 | 2019-04-02 | 深圳大学 | A kind of double frequency filter |
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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 University OF POSTS AND TELECOMMUNICATIONS Contract record no.: 2016320000210 Denomination of utility model: Coplane waveguide bandpass filter based on novel split ring resonator structure Granted publication date: 20160810 License type: Common License Record date: 20161114 |
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| 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 University OF POSTS AND TELECOMMUNICATIONS Contract record no.: 2016320000210 Date of cancellation: 20180116 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |