CN104953205B - Co-planar waveguide bandstop filter based on novel opening resonance ring structure - Google Patents
Co-planar waveguide bandstop filter based on novel opening resonance ring structure Download PDFInfo
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- CN104953205B CN104953205B CN201510364166.6A CN201510364166A CN104953205B CN 104953205 B CN104953205 B CN 104953205B CN 201510364166 A CN201510364166 A CN 201510364166A CN 104953205 B CN104953205 B CN 104953205B
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- opening resonance
- planar waveguide
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Abstract
The invention discloses a kind of co-planar waveguide bandstop filter based on novel opening resonance ring structure, including dielectric substrate, center conduction band, the metal ground plate of center conduction band both sides, at least one opening resonance ring structure, the metal throuth hole for connecting split ring resonator and metal ground plate.Wherein, opening resonance loop structure is used to produce stopband, and metal throuth hole is used to deepen the frequency selectivity outside stopband and elevator belt.The present invention is improved the structure of split ring resonator on the basis of traditional split ring resonator, further reduces electric size, and possesses preferably band external characteristics.
Description
Technical field
The present invention relates to a kind of co-planar waveguide bandstop filter based on novel opening resonance ring structure, belong to microwave technology
Field.
Background technology
After the concept that 1999 propose opening resonance loop structure, the structure is caused due to its outstanding resonance performance
The interest of numerous researchers.Traditional split ring resonator is widely used in microwave planar circuit.In microwave filter,
By introducing opening resonance loop structure, the physical size size of structure is adjusted, you can to obtain different working frequencies, generally quilt
For suppressing higher hamonic wave, good effect is all achieved.On the other hand, opening resonance loop structure is due in less structure
With regard to stronger resonance can be produced, it is easy to accomplish the miniaturization of circuit.
In co-planar waveguide circuit, if split ring resonator to be placed on to the underface of the co-planar waveguide line of rabbet joint, due at two
Magnetic field in opposite direction is generated in split ring resonator circuit, at resonant frequency, split ring resonator work, forms a resistance
Band.The structure has less electric size, realizes the miniaturization of circuit.But the circuit has higher hamonic wave outside in band, not
Suppressed well.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of co-planar waveguide band based on novel opening resonance ring structure
Wave filter is hindered, on the basis of traditional split ring resonator, the structure of split ring resonator is improved, further reduces electricity
Size, and possess preferably band external characteristics.
The present invention uses following technical scheme to solve above-mentioned technical problem：
The present invention provides a kind of co-planar waveguide bandstop filter based on novel opening resonance ring structure, including medium base
Piece；The centre of dielectric substrate upper surface is provided with center conduction band, and it is right that the both ends of center conduction band extend respectively to a pair of dielectric substrate
The edge on side, and center conduction band is perpendicular to a pair of opposite side of foregoing dielectric substrate；The both sides of center conduction band are additionally provided with metal
Earth plate；Dielectric substrate lower surface is provided with least one centrosymmetric opening resonance loop structure, opening resonance loop structure bag
The end to end first to the 7th metal band successively is included, wherein, second, the four, the 6th metal bands are parallel to each other and adjacent
Spacing is equal between the two, and the first, the 3rd metal band is vertical with the second metal band, the five, the 7th metal bands with
6th metal band is vertical, first, fifth metal band on same straight line, the three, the 7th metal bands are straight in same
On line, the first, the 7th metal band length is identical and length is less than second and the 4th spacing between metal band；It is humorous in opening
Shake ring two end points at be provided with metal throuth hole, with open communication resonant ring and the metal ground plate of dielectric substrate upper surface.
It is identical as the further prioritization scheme of the present invention, the length of second, the four, the 6th metal bands.
As the further prioritization scheme of the present invention, the characteristic impedance of the co-planar waveguide of dielectric substrate upper surface is 50 Europe
Nurse.
As the further prioritization scheme of the present invention, dielectric substrate is the dielectric-slabs of Rogers 4003.
As the further prioritization scheme of the present invention, dielectric substrate is rectangle.
The present invention compared with prior art, has following technique effect using above technical scheme：
1）The present invention uses novel opening resonance ring structure, and compared with traditional split ring resonator, the new structure is identical
Physical size under, working frequency is lower, therefore possesses smaller electric size, reached miniaturization requirement；It is new by adjusting
The physical size of type opening resonance loop structure can change working frequency, and controllability is strong；By increasing novel opening resonant ring
The number of structure, the bandwidth of wave filter can be widened；
2）The present invention is solved when traditional split ring resonator closes with coplanar waveguide junction due to medium by introducing metal throuth hole
Substrate is thicker to be caused to couple the shortcomings that weaker, is integrally improved the performance of this structure；Meanwhile occur two in the both sides of stopband and decline
Subtract limit so that frequency selectivity is improved；By the metal ground plate phase of novel opening resonance ring structure face waveguide together
Even, at the operating frequencies, stronger resonance is produced, improves Stopband Performance；Improve out-band performance, the frequency selection of wave filter
Property is improved.
Brief description of the drawings
Fig. 1 is the three-dimensional layering schematic diagram of the present invention.
Fig. 2 is the top view of the present invention.
Fig. 3 is split shed resonant ring structural representation of the present invention.
Wherein, 1- dielectric substrates；2- centers conduction band；3- metal ground plates；4- opening resonance loop structures；5- metal throuth holes.
Fig. 4 is the emulation S parameter figure of the embodiment of the present invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
The present invention provides a kind of co-planar waveguide bandstop filter based on novel opening resonance ring structure, such as Fig. 1 and Fig. 2 institutes
Show, including dielectric substrate.The centre of dielectric substrate upper surface is provided with center conduction band, and the both ends of center conduction band extend respectively to be situated between
The edge of a pair of opposite side of matter substrate, and center conduction band is perpendicular to a pair of opposite side of foregoing dielectric substrate；The both sides of center conduction band
It is additionally provided with metal ground plate.Dielectric substrate lower surface is provided with least one centrosymmetric opening resonance loop structure, such as Fig. 3
Shown, opening resonance loop structure includes the end to end first to the 7th metal band successively, wherein, second, the four, the 6th gold medals
Category band is parallel to each other and adjacent spacing between the two is equal, and the first, the 3rd metal band is vertical with the second metal band, the
5th, the 7th metal band is vertical with the 6th metal band, first, fifth metal band on same straight line, the three, the 7th
Metal band is on same straight line, and the first, the 7th metal band length is identical and length is less than second and the 4th metal band
Between spacing；Metal throuth hole is provided with two end points of split ring resonator, with open communication resonant ring and dielectric substrate
The metal ground plate of upper surface.
In embodiments of the invention, medium substrate uses the dielectric-slabs of Rogers 4003, dielectric constant 3.55, and thickness is
0.8 millimeter.The bandstop filter of the present embodiment as shown in Figure 4 has good Stopband Performance, and wave filter -25dB stopbands arise from
4.65GHz terminates in 4.85GHz, has stronger frequency selectivity.As can be seen here, the present invention is based on novel opening resonance ring structure
Co-planar waveguide bandstop filter be co-planar waveguide and opening resonance loop structure successful combination, have miniaturization, it is high performance
Feature, there is huge reference value in the planar circuit design and application of co-planar waveguide combination new construction.
It is described above, it is only the embodiment in the present invention, but protection scope of the present invention is not limited thereto, and is appointed
What be familiar with the people of the technology disclosed herein technical scope in, it will be appreciated that the conversion or replacement expected, should all cover
Within the scope of the present invention, therefore, protection scope of the present invention should be defined by the protection domain of claims.
Claims (5)
1. based on the co-planar waveguide bandstop filter of novel opening resonance ring structure, including dielectric substrate, it is characterised in that
The centre of dielectric substrate upper surface is provided with center conduction band, and it is right that the both ends of center conduction band extend respectively to a pair of dielectric substrate
The edge on side, and center conduction band is perpendicular to a pair of opposite side of foregoing dielectric substrate；The both sides of center conduction band are additionally provided with metal
Earth plate；
Dielectric substrate lower surface is provided with least one centrosymmetric opening resonance loop structure, opening resonance loop structure include according to
Secondary end to end first to the 7th metal band, wherein, second, the four, the 6th metal bands be parallel to each other and it is adjacent both
Between spacing it is equal, the first, the 3rd metal band is vertical with the second metal band, and the five, the 7th metal bands are with the 6th
Metal band is vertical, first, fifth metal band on same straight line, the three, the 7th metal bands on same straight line,
Firstth, the 7th metal band length is identical and length is less than second and the 4th spacing between metal band；In split ring resonator
Two end points at be provided with metal throuth hole, with open communication resonant ring and the metal ground plate of dielectric substrate upper surface.
2. the co-planar waveguide bandstop filter according to claim 1 based on novel opening resonance ring structure, its feature exist
In the length of second, the four, the 6th metal bands is identical.
3. the co-planar waveguide bandstop filter according to claim 1 based on novel opening resonance ring structure, its feature exist
In the characteristic impedance of the co-planar waveguide of dielectric substrate upper surface is 50 ohm.
4. the co-planar waveguide bandstop filter according to claim 1 based on novel opening resonance ring structure, its feature exist
In dielectric substrate is the dielectric-slabs of Rogers 4003.
5. the co-planar waveguide bandstop filter according to claim 1 based on novel opening resonance ring structure, its feature exist
In dielectric substrate is rectangle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510364166.6A CN104953205B (en) | 2015-06-26 | 2015-06-26 | Co-planar waveguide bandstop filter based on novel opening resonance ring structure |
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| CN201510364166.6A CN104953205B (en) | 2015-06-26 | 2015-06-26 | Co-planar waveguide bandstop filter based on novel opening resonance ring structure |
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| CN104953205A CN104953205A (en) | 2015-09-30 |
| CN104953205B true CN104953205B (en) | 2018-02-06 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720330B (en) * | 2016-03-07 | 2019-01-22 | 南京邮电大学 | Substrate integration wave-guide bandpass filter based on novel complementary openings resonance ring structure |
| JP2018531560A (en) | 2016-05-12 | 2018-10-25 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Filtering device and filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4580741B2 (en) * | 2004-11-26 | 2010-11-17 | 双信電機株式会社 | Passive components |
| KR101281613B1 (en) * | 2009-11-30 | 2013-07-03 | 한국전자통신연구원 | Small antenna using SRR structure and method for manufacturing thereof in a wireless communication system |
| CN103035986B (en) * | 2012-12-15 | 2015-06-03 | 华南理工大学 | Ultra wide-band filter based on double minor matters loading harmonic oscillator |
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2015
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Non-Patent Citations (2)
| Title |
|---|
| "Coplanar Waveguides Loaded with S-Shaped Split-Ring Resonators:Modeling and Application to Compact Microwave";Ali K. Horestani等;《IEEE Antennas and Wireless Propagation Letters》;20140131;第13卷;第1349-1351页 * |
| "S-Shaped Complementary Split Ring Resonators and Their Application to Compact Differential Bandpass Filters With";Ali K. Horestani等;《IEEE Microwave and Wireless Components Letters》;20140331;第24卷(第3期);第149-152页 * |
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