CN106532202A - Microstrip filter based on screwing and unscrewing structure microstrip resonators - Google Patents
Microstrip filter based on screwing and unscrewing structure microstrip resonators Download PDFInfo
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- CN106532202A CN106532202A CN201610880930.XA CN201610880930A CN106532202A CN 106532202 A CN106532202 A CN 106532202A CN 201610880930 A CN201610880930 A CN 201610880930A CN 106532202 A CN106532202 A CN 106532202A
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- micro
- spinning
- strip resonantor
- strip
- microstrip
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
- H01P1/20327—Electromagnetic interstage coupling
- H01P1/20354—Non-comb or non-interdigital filters
- H01P1/20381—Special shape resonators
Abstract
The invention provides a microstrip filter based on screwing and unscrewing structure resonators, which is applicable to an X band and higher bands and can accurately control the working frequency of the resonators. The coupling modes between adjacent resonators are flexible and diverse, non-adjacent resonators are arranged by adopting a translational symmetry mode, the parasitic coupling effects between the non-adjacent resonators are negligible, and a transmission zero does not exist in passband responses of the designed and obtained filter.
Description
Technical field
The invention belongs to microwave engineering techniques field, and in particular to a kind of based on the micro- of spinning in and out structure micro-strip resonantor
Band filter.
Background technology
In microwave engineering, wave filter is one of core devices of wireless communication system, is widely used in radar, movement and leads to
The fields such as letter, astronomical observation, satellite communication, meteorological observation.Preferably wave filter leads to the signal lossless in passband frequency range
Cross, the signal outside passband is filtered off completely.The basic Component units of practical filter are resonator.Micro-strip resonantor by
The mode that standing wave is produced on transmission line realizes resonance, and the equivalent length of the higher resonator of working frequency points is less, spacing electromagnetic radiation
Higher, except the electromagnetic coupled between neighbour's resonator, the parasitic couplings between non-neighbors resonator are also tended to relatively by force, parasitic couplings
Presence is also easy to produce uncontrollable transmission zero, as shown in Figure 1 a, 1 b.As shown in Figure 2 a equal adopted in document [1] and [2]
, there is the parasitic couplings that can not ignore, wave filter in the Stepped Impedance H type resonator designs of even impedance rectangle resonator and Fig. 2 b
There is transmission zero in response, distal end suppresses to deteriorate.
[1]Li Q,Guo X,Cao B,et al.A high performance narrowband
superconducting filter at Ku‐band[J].Microwave and Optical Technology
Letters,2012,54(6):1514-1516.
[2]Song X,Wei B,Cao B,et al.High‐performance narrowband
superconducting filters with high Q resonators at X‐band[J].Microwave and
Optical Technology Letters,2014,56(7):1516-1520.
It is a kind of traditional design methods to weaken parasitic couplings by weakening the electromagnetic radiation of resonator, patent
Mentality of designing that micro-strip resonantor folded is taken in CN100505415 and patent CN101740846 all, such as Fig. 2 c, Fig. 3 institute
Show, but as the increase of microstrip line folding times, the lossy microwave of resonator will increase, the nonloaded Q of resonator reduce therewith,
And then increase the Insertion Loss value of wave filter；For the wave filter for working in X-band or even higher frequency section, Insertion Loss is to performance of filter
Deteriorate especially pronounced, the resonator structure of the embodiment 2 of patent CN101740846, as shown in Figure 3, it is impossible to be simply extended to
Higher working frequency range；Additionally, the radiation of electromagnetic field of high frequency is more difficult to limit compared to low frequency, electromagnetism coupling between non-neighbors resonator
Conjunction effect is more notable, only individually designed to resonator structure to meet the design requirement for weakening parasitic couplings, finally sets
Can still there is uncontrollable transmission zero in the microstrip filter response that meter is obtained.Therefore, resonator structure with wave filter humorous
The placement relation shaken in device needs collaborative design, thoroughly eliminates transmission in just would be possible to make the wave filter for being operated in high frequency response
Zero point.
The content of the invention
In view of this, it is an object of the invention to provide a kind of micro-strip based on spinning in and out structure micro-strip resonantor is filtered
Device, the transmission zero introduced by the parasitic couplings between non-neighbors resonator during wave filter response can be eliminated.
A kind of microstrip filter based on spinning in and out structure micro-strip resonantor, including at least one resonator element；Institute
Resonator element is stated at least including three micro-strip resonantors using spinning in and out structure, wherein, non-adjacent micro-strip resonantor
Arrange in translational symmetry mode.
Preferably, the symmetric mode of adjacent micro-strip resonantor includes but is not limited to axial symmetry, center pair in resonator element
Claim and rotationally symmetrical.
Preferably, the wave filter includes two resonator elements arranged in axial symmetry mode, resonator element includes 3
Individual micro-strip resonantor.
Preferably, being axial symmetry mode between adjacent micro-strip resonantor in each resonator element.
Preferably, resonator element includes 4 micro-strip resonantors.
Preferably, being axial symmetry mode between adjacent micro-strip resonantor.
Preferably, the size of the micro-strip resonantor is long × wide：1.74mm × 1.24mm, microstrip line live width are 0.3mm,
Distance between centers of tracks is 0.18mm.
Preferably, the microstrip line live width of the micro-strip resonantor is 0.3mm, the bending place thickness of back-out part is
0.44mm, the bending place thickness of precession part is 0.24mm.
Preferably, being provided with rectangular block in the heart in the distal end faces of the back-out part of the micro-strip resonantor.
The present invention has the advantages that：
The invention provides a kind of microstrip filter based on spinning in and out structure resonator, it is adaptable to X-band and higher
Frequency range, being capable of precise control resonator works frequency；Between neighbour's resonator, coupled modes are versatile and flexible, between non-neighbors resonator
Arranged by the way of translational symmetry so that the parasitic coupling effect between non-neighbors resonator is negligible, what design was obtained
There is no transmission zero in filter passband response.
Description of the drawings
Fig. 1 a are the transmission characteristic computer artificial results of the microstrip filter that there are parasitic couplings；
Fig. 1 b are a kind of microstrip filter transfer curves proposed in patent CN101740846；
Fig. 2 a are a kind of uniform impedance rectangle resonators for being operated in X-band；
Fig. 2 b are a kind of Stepped Impedance H type resonators for being operated in X-band；
Fig. 2 c are a kind of asymmetric micro-strip resonantors for being operated in X-band proposed in patent CN101740846；
Fig. 3 is a kind of asymmetric micro-strip resonantor for being operated in S-band proposed in patent CN101740846；
Fig. 4 is the sectional view of microstrip line；
Fig. 5 is conventional hair fastener type resonator；
Fig. 6 is a kind of geometry of spinning in and out structure micro-strip resonantor of the present invention；
Fig. 7 a are a kind of geometries that micro-strip resonantor end of the present invention loads little rectangular block；
Fig. 7 b are a kind of inconsistent geometries of micro-strip resonantor part microstrip line line width adjustment of the present invention；
Fig. 8 a are the geometries when resonator shown in two Fig. 6 is arranged in translational symmetry mode；
Fig. 8 b are the geometries when resonator shown in two Fig. 6 is arranged in axial symmetry mode；
Fig. 8 c are the geometries when resonator shown in two Fig. 6 is arranged in another kind of axial symmetry mode；
Fig. 8 d are the geometries when resonator shown in two Fig. 6 is arranged in Central Symmetry mode；
Fig. 8 e are the geometries when resonator shown in two Fig. 6 is arranged in another kind of Central Symmetry mode；
Fig. 9 be when the resonator shown in Fig. 6 is put with the arrangement mode shown in Fig. 8 a, 8b, 8c, 8d, 8e the coefficient of coup with
The curve of distance change；
Figure 10 is a kind of geometry mechanism when the secondary neighbour of the resonator shown in Fig. 6 is arranged in translational symmetry mode；
Figure 11 a are the 6 rank microstrip filters of an X-band put using the resonator shown in Fig. 6；
Figure 11 b are the computer artificial results of the transfer curve of Figure 11 a median filters；
Figure 12 is a kind of geometry of Ku wave bands micro-strip resonantor of the present invention；
Figure 13 a are the 4 rank microstrip filters of a Ku wave band put using the resonator shown in Figure 12；
Figure 13 b are the computer artificial results of the transfer curve of Figure 13 a median filters.
Wherein, 1- micro belt conductors, 2- ground plane conductors, 3- dielectric layers.
Specific embodiment
Develop simultaneously embodiment below in conjunction with the accompanying drawings, describes the present invention.
Micro-strip resonantor of the wave filter of the present invention based on spinning in and out structure, this structure are characterised by the sense of current
Contrary microstrip line is placed in parallel all the time, and is together folded winding (circle).
Micro-strip resonantor is made up of a uniform live width microstrip line, and described uniform live width microstrip line includes：The micro-strip on upper strata
The ground plane conductor 3 of conductor 1, middle dielectric layer 2 and lower floor, as shown in Figure 4；After being folded in half into hair fastener type resonator, such as Fig. 5
It is shown, which is further folded and is wound in the unsymmetric structure with spinning in and out, as shown in Figure 6.
The resonator, microstrip line live width about 0.3mm are wider than the 0.08mm of typical mini strip line resonator live width.
The resonator, initiating terminal and end end are loaded with little rectangular block, as shown in Figure 7a；Or, fractional transmission line live width is not
Unanimously, as shown in Figure 7b.Little rectangular block or adjustment member transmission line live width is loaded, the centre frequency of resonator is accurately adjusted
Section.
To achieve these goals, the present invention provides a kind of microstrip filter, it is characterised in that include：Spinning in and out are tied
Structure micro-strip resonantor, secondary neighbour's resonator are put in translational symmetry mode.
The spinning in and out structure micro-strip resonantor is made up of a uniform live width microstrip line, is folded in half into hair fastener type resonator
Afterwards, further fold and be wound in the unsymmetric structure with spinning in and out.Resonator initiating terminal and end end are loaded with little square
Shape block, or fractional transmission line live width is slightly inconsistent.
Described microstrip filter, minimum structural unit with three resonators as one group, as shown in Figure 10, wherein, neighbour
Taken using including but are not limited to axial symmetry, Central Symmetry, rotationally symmetrical etc. between the spinning in and out structure micro-strip resonantor
The mapping mode matched somebody with somebody is arranged, such as Fig. 8 b, 8c, 8d, 8e；Adopt between spinning in and out structure micro-strip resonantor described in secondary neighbour
Translational symmetry mode is arranged, as shown in Figure 8 a.
Described in neighbour between spinning in and out structure micro-strip resonantor using include but are not limited to axial symmetry, Central Symmetry,
The mapping mode such as rotationally symmetrical is arranged.Using translational symmetry between spinning in and out structure micro-strip resonantor described in secondary neighbour
Mode is arranged.
The present invention is further described through with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
With reference to Fig. 4,6, form micro-strip resonantor using microstrip line, the microstrip line is superconductive micro-strip line, and its upper strata micro-strip leads
Body 1 and lower floor's ground plane conductor 2 are YBCO superconductive film, and middle dielectric layer 3 is magnesia crystal that dielectric constant is 9.7.
Fig. 6 is the X-band superconducting microstrip resonator figure that the present embodiment is designed for 10GHz according to frequency, graphic scale
It is very little for 2.24mm × 1.46mm (long × wide), the live width of microstrip line is 0.32mm, and distance between centers of tracks is 0.32mm.
For embodying resonator as shown in Figure 6, and spinning in and out structure micro-band resonance described in the non-neighbors shown in Figure 10
The advantage that device is arranged in translational symmetry mode, giving described in put with the different arrangement modes of five kinds of Fig. 8 a, 8b, 8c, 8d, 8e
Variation relation of the coefficient of coup between resonator with distance.As shown in figure 9, resonator of the present invention is put with Fig. 8 a arrangement modes
When, the coefficient of coup rate of decay is much larger than other various arrangement modes.
It is 10GHz that Figure 11 a are the present embodiment according to centre frequency, an X-band superconductive micro-strip filter of bandwidth 60MHz design
Ripple device figure, dimension of picture are 26mm × 10mm (long × wide), and in the microstrip filter, resonator described in non-neighbors is translating
Symmetric mode is arranged.
Figure 11 b are the computer artificial results of the pass band transfer characteristics curve of the present embodiment superconducting micro band filter, emulation
As a result show, in the microstrip filter pass band transfer characteristics curve, do not contain transmission zero, it was demonstrated that the superiority of the present invention.
Embodiment 2
With reference to Fig. 4,12, form micro-strip resonantor using microstrip line, the microstrip line is superconductive micro-strip line, and its upper strata micro-strip leads
Body and lower floor's ground plane conductor are YBCO superconductive film, and middle dielectric layer is magnesia crystal that dielectric constant is 9.7.
Figure 12 is the Ku wave band superconducting microstrip resonator figure that the present embodiment is designed for 13GHz according to frequency, figure
Size is 1.74mm × 1.24mm (long × wide), and microstrip line live width is 0.3mm, and distance between centers of tracks is 0.18mm.
It is 13GHz that Figure 13 a are the present embodiment according to centre frequency, a Ku wave band superconductive micro-strip of bandwidth 120MHz design
Wave filter figure, dimension of picture are 13.86mm × 8mm (long × wide), in the microstrip filter, resonator described in non-neighbors with
Translational symmetry mode shown in Figure 10 is arranged.
Figure 13 b are the computer artificial results of the pass band transfer characteristics curve of superconducting micro band filter, and simulation result shows,
Transmission zero is not contained in the microstrip filter pass band transfer characteristics curve, it was demonstrated that the superiority of the present invention.
The present invention is to complete Computer Simulation using electromagnetic simulation software Sonnet, specifically feels ashamed and emulates and says according to software
It is bright to carry out.
The superconduction taste wave filter inscribed in the present invention is made by conventional process, i.e. photoetching, dry etching, cutting, group
What the processing steps such as dress made, belong to the known technology of those skilled in the art.
The micro-strip resonantor that the present invention is provided has the unsymmetric structure of spinning in and out, microstrip line live width width, nonloaded Q
It is high, it is adaptable to which that X-band and higher operating frequency, microstrip filter non-neighbors resonator are arranged in translational symmetry mode, effectively
Weaken parasitic couplings, eliminate transmission zero in passband response.
In sum, presently preferred embodiments of the present invention is these are only, is not intended to limit protection scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in the present invention's
Within protection domain.
Claims (9)
1. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor, it is characterised in that including at least one resonance
Device unit；, at least including three micro-strip resonantors using spinning in and out structure, wherein, non-adjacent is micro- for the resonator element
Band resonator is arranged in translational symmetry mode.
2. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 1, it is characterised in that
In resonator element, the symmetric mode of adjacent micro-strip resonantor includes but is not limited to axial symmetry, Central Symmetry and rotationally symmetrical.
3. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 1 or 2, its feature exist
In the wave filter includes two resonator elements arranged in axial symmetry mode, and resonator element includes 3 micro-band resonances
Device.
4. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 3, it is characterised in that
It is axial symmetry mode between adjacent micro-strip resonantor in each resonator element.
5. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 1 or 2, its feature exist
In resonator element includes 4 micro-strip resonantors.
6. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 5, it is characterised in that
It is axial symmetry mode between adjacent micro-strip resonantor.
7. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 5, it is characterised in that
The size of the micro-strip resonantor is long × wide：1.74mm × 1.24mm, microstrip line live width are 0.3mm, and distance between centers of tracks is 0.18mm.
8. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 1, it is characterised in that
The microstrip line live width of the micro-strip resonantor be 0.3mm, screw out part bending place thickness be 0.44mm, the bending of precession part
Place's thickness is 0.24mm.
9. a kind of microstrip filter based on spinning in and out structure micro-strip resonantor as claimed in claim 1, it is characterised in that
Rectangular block is provided with the heart in the distal end faces of the back-out part of the micro-strip resonantor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880930.XA CN106532202B (en) | 2016-10-09 | 2016-10-09 | A kind of microstrip filter based on spinning in and out structure micro-strip resonantor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880930.XA CN106532202B (en) | 2016-10-09 | 2016-10-09 | A kind of microstrip filter based on spinning in and out structure micro-strip resonantor |
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| Publication Number | Publication Date |
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| CN106532202A true CN106532202A (en) | 2017-03-22 |
| CN106532202B CN106532202B (en) | 2019-09-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030222732A1 (en) * | 2002-05-29 | 2003-12-04 | Superconductor Technologies, Inc. | Narrow-band filters with zig-zag hairpin resonator |
| CN1967933A (en) * | 2005-11-18 | 2007-05-23 | 中国科学院物理研究所 | A superconductive micro-strip resonantor |
| CN101159350A (en) * | 2007-11-09 | 2008-04-09 | 南开大学 | Resonator group suitable for manufacturing linearity phase superconductivity filter |
| CN101740846A (en) * | 2008-11-17 | 2010-06-16 | 中国科学院物理研究所 | Micro-strip resonator and micro-strip filter |
-
2016
- 2016-10-09 CN CN201610880930.XA patent/CN106532202B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030222732A1 (en) * | 2002-05-29 | 2003-12-04 | Superconductor Technologies, Inc. | Narrow-band filters with zig-zag hairpin resonator |
| CN1967933A (en) * | 2005-11-18 | 2007-05-23 | 中国科学院物理研究所 | A superconductive micro-strip resonantor |
| CN101159350A (en) * | 2007-11-09 | 2008-04-09 | 南开大学 | Resonator group suitable for manufacturing linearity phase superconductivity filter |
| CN101740846A (en) * | 2008-11-17 | 2010-06-16 | 中国科学院物理研究所 | Micro-strip resonator and micro-strip filter |
Non-Patent Citations (1)
| Title |
|---|
| SHUNZHOU LI，ETC: "A 12-pole narrowband highly selective high-temperature superconducting filter for the application in the third-generation wireless communications", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
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| CN106532202B (en) | 2019-09-20 |
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