CN101950829B - Miniature dual-stop band microstrip filter - Google Patents
Miniature dual-stop band microstrip filter Download PDFInfo
- Publication number
- CN101950829B CN101950829B CN 201010508463 CN201010508463A CN101950829B CN 101950829 B CN101950829 B CN 101950829B CN 201010508463 CN201010508463 CN 201010508463 CN 201010508463 A CN201010508463 A CN 201010508463A CN 101950829 B CN101950829 B CN 101950829B
- Authority
- CN
- China
- Prior art keywords
- dgs
- srr
- stop band
- grounding structure
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a miniature dual-stop band microstrip filter. A DGS is etched on an earth plate; an SRR is added into the gap of the DGS; and a dielectric slab with a dielectric constant epsilon of 2.6 is filled between a central transmission line and the earth plate. The invention is a planar microstrip dual-stop band filter, which has two stop bands of 3.62 GHz to 5.19 GHz and 6.13 GHz to 8.37 GHz. As the planar technology is adopted to arrange the SRR in the gap of the DGS, the size of the structure is very small compared with the traditional dual-stop band filter. The SRR is arranged in the gap of the DGS and two stop bands are generated as both of the SRR and the DGS have resonant effects. Moreover, due to the coupling effect of the SRR and the DGS, when the width of the gap of the DGS is increased, the central frequency of the two stop bands is reduced.
Description
Technical field
The present invention relates to a kind of Miniature dual-stop band microstrip filter, belong to the technical field of microwave communication signal transmission microstripline filter.
Background technology
Existing dual-attenuation filter stock size is larger.(Defected Ground Structure---stop-band filter DGS) generally only has a stopband, and the centre frequency of this stopband can increase along with the width in the slit of DGS in the structure and reduce and based on defect grounding structure.
Summary of the invention
The present invention seeks to provides a kind of Miniature dual-stop band microstrip filter for the defective that prior art exists, in the slit of DGS, add a rectangle SRR(split ring resonators) structure, two stopbands have been realized, and when increasing the DGS gap width (because SRR is arranged in the slit, so SRR and DGS gap width increase simultaneously) time, the centre frequency of two stopbands does not increase on the contrary and reduces.Because using planar technique SRR to be embedded in the slit of DGS, obviously reduce with same conventional filter comparative structure size.
The present invention adopts following technical scheme for achieving the above object:
Miniature dual-stop band microstrip filter of the present invention etches a DGS at ground plate, adds a SRR in the slit of DGS; Filling dielectric constant between central transmission line and ground plate is the dielectric-slab of ε=2.6.
The present invention is a planar microstrip line formula dual-attenuation filter.Has 3.62GHz to 5.19 GHz and 6.13 GHz to two stopbands of 8.37 GHz..Its advantage is:
1. because structure adopts planar technique SRR is placed the DGS slit, so more proud with the traditional double stop-band filter, size is very little.
2. because SRR places the DGS slit, owing to both having resonance effect, so produce two stopbands.And because both couplings, when the DGS gap width was increased, the centre frequency of two stopbands can reduce (Fig. 4).And traditional DGS filter only has a stopband, and the DGS gap width is when increasing, and the stopband center frequency can increase.
Description of drawings
Fig. 1: structure chart of the present invention.
Fig. 2: the present invention and the S parameters simulation that only has the DGS structure be comparison diagram as a result.
The body structure surface current distributing figure of Fig. 3: 4.64GHz and 6.68GHz.
Fig. 4: centre frequency oscillogram.
Fig. 5: simulation result figure of the present invention.
Embodiment
As shown in Figure 1, in the cellular construction, etch a DGS(Defected Ground Structure at ground plate), in the slit of DGS, add a SRR (split-ring resonators).Filling dielectric constant between central transmission line and ground plate is the dielectric-slab of ε=2.6.Fig. 2 is that this structure and the S parameters simulation result who only has the DGS structure compare.Wherein red line is traditional DGS stop-band filter, only has a stopband, and its centre frequency is 7.43GHz.And blue line represents the design's S parameters simulation result.Have two stopbands.The centre frequency of the first stopband is 4.64 GHz, and the centre frequency of the second stopband is 6.68GHz.Fig. 3 is the body structure surface current distributing figure of 4.64GHz and 6.68GHz.As can be seen from Figure 3, when frequency was 4.64GHz, the electric current at DGS edge obviously was better than the SRR edge current, caused so first stopband is DGS resonance.And when frequency was 6.68GHz, the SRR edge current was better than again the DGS edge current, so the second stopband is caused by SRR resonance.This structure places the DGS slit with the SRR structure for the first time, and the structure of this novelty has produced special result just.Fig. 4 is the centre frequency oscillogram.Fig. 5 is that sample test and the simulation result of the design's structure compares.
Claims (1)
1. a Miniature dual-stop band microstrip filter is characterized in that etching a defect grounding structure at ground plate, adds a rectangular aperture resonant ring in the slit of defect grounding structure; Described defect grounding structure is traditional dumbbell shape defect grounding structure; Nested forming inside and outside the straight-flanked ring of described split ring resonator by two end openings, the opening direction of described two straight-flanked rings is opposite; Filling dielectric constant between central transmission line and ground plate is
=2.6 dielectric-slab; Described microstripline filter has two stopbands, and the mat woven of fine bamboo strips one stopband causes by defect grounding structure resonance, and the second stopband is caused by rectangular aperture resonant ring resonance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508463 CN101950829B (en) | 2010-10-15 | 2010-10-15 | Miniature dual-stop band microstrip filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508463 CN101950829B (en) | 2010-10-15 | 2010-10-15 | Miniature dual-stop band microstrip filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101950829A CN101950829A (en) | 2011-01-19 |
| CN101950829B true CN101950829B (en) | 2013-04-17 |
Family
ID=43454238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010508463 Expired - Fee Related CN101950829B (en) | 2010-10-15 | 2010-10-15 | Miniature dual-stop band microstrip filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101950829B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280616B (en) * | 2013-05-10 | 2015-04-15 | 南京信息工程大学 | Double-passband filter with left-hand performance |
| CN110265757B (en) * | 2019-07-24 | 2023-12-19 | 南京信息工程大学 | Microstrip band-pass filter of WLAN frequency band |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471479A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院电子学研究所 | Zero order resonator, narrow band filter and optimum design method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100538889B1 (en) * | 2003-02-10 | 2005-12-26 | 임종식 | A New Type of Low Pass Filters Using Defected Ground Structure and Capacitively Compensated Transmission Line |
| KR100623517B1 (en) * | 2005-05-24 | 2006-09-13 | 순천향대학교 산학협력단 | Microwave resonator having defected ground structure on dielectric |
-
2010
- 2010-10-15 CN CN 201010508463 patent/CN101950829B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471479A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院电子学研究所 | Zero order resonator, narrow band filter and optimum design method |
Non-Patent Citations (2)
| Title |
|---|
| 一种新颖的开口环地面缺陷结构低通滤波器;付树洪,童创明,李西敏;《电波科学学报》;20091230;第24卷(第6期);全文 * |
| 付树洪,童创明,李西敏.一种新颖的开口环地面缺陷结构低通滤波器.《电波科学学报》.2009,第24卷(第6期), |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101950829A (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104466399B (en) | Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals | |
| CN103700910B (en) | The two band filter of a kind of complementary openings resonant ring and defect ground structure half module substrate integrated wave guide | |
| CN1874053B (en) | Miniaturized band-pass filter with harmonic suppression for loading fan-shaped offset of microstrip | |
| Jang et al. | Size reduction of patch antenna array using CSRRs loaded ground plane | |
| CN101986456A (en) | Ultra wide band filter with trap characteristics | |
| CN101950828A (en) | Four-open-loop dual-band microstrip filter | |
| CN102394328B (en) | Microstrip bimodule band-pass filter based on DGS (defected ground structure) square-ring resonator | |
| CN110600875A (en) | Low-profile, compact linear polarization and circularly polarized filter antenna with high selectivity | |
| CN204732507U (en) | The double frequency helical cavity filter that a kind of bandwidth is controlled | |
| CN110676542B (en) | Port coupling structure, filter and radio frequency assembly | |
| CN105720337A (en) | Double-band filter based on integrated waveguide complementary split resonant ring and strip line structure | |
| CN111864324A (en) | Small-size dual-band-pass filter based on CSRR | |
| Tiwary et al. | Design of compact coupled microstrip line band pass filter with improved stopband characteristics | |
| CN101950829B (en) | Miniature dual-stop band microstrip filter | |
| CN104269588A (en) | Small-scale hexagonal three-mode filter based on center branch knot loading | |
| WO2016115822A1 (en) | Ring resonator structure and antenna | |
| Zheng et al. | Design of dual band-notch UWB bandpass filter based on T-shaped resonator | |
| Tang et al. | Differentially SIW TE 20-mode Fed substrate integrated filtering dielectric resonator antenna for 5G millimeter wave application | |
| CN104409813A (en) | Vertical interdigital filter based on source-load coupling | |
| CN103296359A (en) | Filter | |
| CN105720340A (en) | Compact type band-pass filter containing low-frequency transmission zero | |
| KR101216433B1 (en) | High-pass filter using metameterial | |
| Wang et al. | Miniaturized substrate integrated waveguide filters with stepped-impedance slot resonators for millimeter-wave application | |
| CN115997320A (en) | Dielectric filter and AU, RU or BS having the same | |
| CN103219572A (en) | Microwave band-pass filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151015 |
|
| EXPY | Termination of patent right or utility model |