CN106299559B - A kind of high power tolerance high temperature superconduction wave filter using defect ground structure - Google Patents
A kind of high power tolerance high temperature superconduction wave filter using defect ground structure Download PDFInfo
- Publication number
- CN106299559B CN106299559B CN201610880987.XA CN201610880987A CN106299559B CN 106299559 B CN106299559 B CN 106299559B CN 201610880987 A CN201610880987 A CN 201610880987A CN 106299559 B CN106299559 B CN 106299559B
- Authority
- CN
- China
- Prior art keywords
- resonator
- ground plane
- ground structure
- filter
- defect ground
- 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.)
- Active
Links
- 230000007547 defect Effects 0.000 title claims abstract description 31
- 239000000758 substrate Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 6
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 claims description 6
- 229910002244 LaAlO3 Inorganic materials 0.000 claims description 5
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 9
- 239000002887 superconductor Substances 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- -1 Lanthanum aluminate Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention proposes a kind of high powers using defect ground structure to be resistant to high temperature superconduction wave filter, the current density of defect ground structure resonator is higher than the current density of completely structure resonator, the design of defect ground structure reconstructs the distribution of resonator surface current density, making the maximum current density of entire circuit reduces, to improve the power tolerance of filter.
Description
Technical field
The invention belongs to microwave communication equipment technical fields, and in particular to a kind of high power tolerance using defect ground structure
High temperature superconduction wave filter.
Background technique
High temperature superconducting materia is very small in the sheet resistance of microwave frequency band.It is filtered using superconductive micro-strip made of superconductor
Device has that insertion loss is small, band edge is precipitous, the high excellent characteristics of Out-of-band rejection degree, with low-temperature refrigeration technology, vacuum technique, super
The rapid development of film growth techniques and imitation technology is led, high temperature superconduction wave filter is widely used in mobile base station, defends
The systems receiving front-ends such as magnitude communication system, astronomical observation system and Meteorological Observation System.High temperature superconduction wave filter can be effective
Interference of the filtering interference signals to system, especially by the anti-interference ability for inhibiting intermodulation signal to improve system.High-temperature superconductor
The ability of the anti-intermodulation distortion of filter is directly related with its power tolerance, therefore improves high temperature superconduction wave filter
Tolerance power can effectively promote the ability of its anti-intermodulation distortion.
The high temperature superconduction wave filter important in inhibiting for studying high power tolerance, is applied in wireless communication system transmitting terminal
High temperature superconduction wave filter needs very high tolerance power.Such as China's 3-G (Generation Three mobile communication system) requires the tolerance function of filter
Rate is more than 42dBm (16 watts).And the tolerance power that the filter for being used in radar system transmitting terminal then needs to possess kilowatt or more.It is existing
Some be used in receiving end super conductive filter tolerance power be typically up to less than watt magnitude, the application of transmitting terminal is much not achieved
It is required that.
The raising of input power will lead to high temperature superconduction wave filter penalty, the main reason is that: with input power
Raising, superconducting thin film surface current density can increase with it, and when surface current density is more than critical current density, material is lost
It is super, penalty.The tolerance power of high temperature superconduction wave filter can be generally improved in terms of two: first is that improving superconductor itself
Performance, that is, prepare or select the higher superconducting thin film of critical current density；Second is that optimizing resonance from microwave designing angle
Device structure and filter design, improve the tolerance power of high temperature superconduction wave filter.
Wide rectangle resonator structure is the tolerance power of filter to be improved by increasing the width of resonator, but be resistant to function
The raising of rate is to increase the size of filter as cost, and width cannot infinitely increase.2007, Xubo Guo et al. was proposed
A kind of method using different in width rectangle resonator design high power tolerance high temperature superconduction wave filter, each economize on electricity of filter
Current density is different, need to be according to the width of the power different adjustment resonator of each section resonator when designing filter.2013,
Yuto Tanaka et al. devises a 4 section high-power high-temperature superconducting filters, and the second section of filter is filtered using joint-cutting
Device, and other resonators are using wide rectangle resonator.Although this method can be used to design high power tolerance high-temperature superconductor filter
Wave device, but the further promotion of tolerance power also depends on the promotion of resonator structure tolerance power itself.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of high power tolerance high-temperature superconductor filtering using defect ground structure
Device, overcomes that microstrip structure filter tolerance power is low, big disadvantage is lost in strip lines configuration filter substrate, is a kind of performance
Excellent high power is resistant to high temperature superconduction wave filter.
A kind of super conductive filter using defect ground structure, the filter include substrate, and are successively added on substrate
Lower layer's ground plane of work and the resonator with the wide rectangular configuration of more piece on upper layer, the ground plane use defect ground structure, lack
The conductor part of the ground plane portion and upper and lower two sides of ground plane that retain upper layer first, last section resonator face is fallen into ground structure,
The shape and width of the corresponding ground plane portion of several pitch width rectangular configurations between first, last section are not limited to and corresponding wide rectangle
Structure is consistent；The width of the ground plane of upper layer first, last section resonator face meets following condition: in Electromagnetic Simulation, resonator
The maximum current density and the maximum current density of defect ground structure of each pitch width rectangular configuration are equal in allowable range of error.
Preferably, the shape of the corresponding ground plane portion of several pitch width rectangular configurations between first, last section is that middle part is wide by two
Narrow structure is held, width is increased in the form of step from both ends to middle part.
Preferably, the substrate material is LaAlO3, the resonator on lower layer's ground plane and upper layer is all made of yttrium barium copper oxide
YBCO superconductive film.
The invention has the following beneficial effects:
A kind of high power using defect ground structure proposed by the present invention is resistant to high temperature superconduction wave filter, and defect ground structure is humorous
The current density of vibration device is higher than the current density of completely structure resonator, and the design of defect ground structure makes resonator surface electric current
Density Distribution reconstructs, and reduces the maximum current density of entire circuit, to improve the power tolerance of filter.
Detailed description of the invention
Fig. 1 is defect ground structure filter upper layer circuit diagram (unit mm) of the invention；
Fig. 2 is the lower circuit figure (unit mm) of defect ground structure filter of the invention；
Fig. 3 is the simulated response curve of defect ground structure filter of the invention；
For (2.92GHz) defect ground structure resonator at high frequency band edge and completely, structure resonator is lost with power Fig. 4
Change curve.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Filter includes substrate, and lower layer's ground plane for successively processing on substrate and upper layer have the wide rectangle of more piece
The resonator of structure.It is 2.9GHz that a specific embodiment of the invention, which is a centre frequency, 1dB relative bandwidth 1.5%
Superconducting bandpass filter.Lower layer's ground plane and the equal yttrium barium copper oxide of the resonator on upper layer (YBCO) superconducting thin film, substrate material are
LaAlO3, with a thickness of 0.5mm.
This example using defect ground structure design high power tolerance high temperature superconduction wave filter method the following steps are included:
1, the top conductor layer of the resonator of defect ground structure is set using wide rectangle resonator structure, the ground plane on defect ground
Meter is the conductor part for retaining two sides of the ground plane portion and ground plane of upper layer first and last section resonator face or more, first, last section
Between the corresponding ground plane portion of several section resonators shape and width be not limited to the wide rectangle knot with corresponding resonator
Structure is consistent, and in the present embodiment, the corresponding ground plane portion of intermediate a few section resonators increases width using step shape, and by first and last section
Superconducting film on the ground plane of the right and left etches away；
2, using software Electromagnetic Simulation method, current simulations are carried out at centre frequency to the resonator of defect ground structure,
Simulation parameter is provided that middle dielectric layer using LaAlO3 material, and dielectric constant is set as 23.8, with a thickness of 0.5mm；Upper layer
The conductor part of resonator and ground plane is all made of perfact conductor approximation；The width of upper layer resonator is 4mm, first and last section resonator
Length is 12.64mm, and intermediate a few section resonator lengths are 12.88mm, centre frequency 2.56GHz；Emulate the setting of cell size
For 0.02mm × 0.02mm.By accordingly completely the centre frequency of structure resonator be also adjusted to 2.56GHz carry out current simulations,
Compare the maximum current density of two kinds of resonators.
3, it determines that upper layer resonator width is that 4mm is constant, emulates upper layer first and last section resonator and corresponding ground plane most
For high current density with the variation relation of w, w is the width of the ground plane of upper layer first and last section resonator face, finds resonator or more
The almost equal point of the maximum current density on surface, the w of defect ground structure resonator after the optimization of power tolerance are
3.6mm。
Design the almost the same defect ground structure of two indices and completely Structure Filter, size be 40mm ×
17mm.The upper layer resonator of defect ground structure filter and the circuit diagram difference of ground plane are as depicted in figs. 1 and 2, and Fig. 3 is imitative for it
True response curve.The receiving power for defining filter is that the maximum value that logical in-band insertion loss reduces reaches corresponding when 0.5dB
Input power value.It tests and obtains at 77K, insertion loss reduces maximum frequency point in high frequency band edge.Fig. 4 is at high frequency band edge
The power tolerance of the relation curve of filter loss and input power, defect ground structure high temperature superconduction wave filter is
37.3dBm, and the power tolerance of high temperature superconduction wave filter completely is 34.1dBm.The high-temperature superconductor of defect ground structure
Filter power tolerance is higher than complete ground structure.
Above-described embodiment is only illustrated, and the present invention will be described, but the present invention is not limited thereto, can be in this base
Various deformation is carried out on plinth.For example, a 4 rank high-power high-temperature superconducting filters are devised in above-described embodiment, but this hair
The bright filter that can also be easy to design other higher order numbers with this structure.Although in addition, being selected in above-described embodiment
Lanthanum aluminate LaAlO3 substrate, but the substrate of the other materials such as magnesia MgO, sapphire can be used completely as needed.This
A little deformations also should belong to same design concept of the invention, should all be within protection scope of the present invention.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (2)
1. a kind of super conductive filter using defect ground structure, the filter include substrate, and successively process on substrate
Lower layer's ground plane and upper layer the resonator with the wide rectangular configuration of more piece, which is characterized in that the ground plane use defect
Ground structure retains ground plane portion and upper and lower two sides of ground plane of upper layer first, last section resonator face in defect ground structure
Conductor part, the shape of the corresponding ground plane portion of several pitch width rectangular configurations between first, last section are that width both ends in middle part are narrow
Structure, width are increased in the form of step from both ends to middle part, and the superconducting film on the ground plane of first and last section the right and left is carved
Eating away；The width of the ground plane of upper layer first, last section resonator face meets following condition: in Electromagnetic Simulation, each section of resonator
The maximum current density of wide rectangular configuration and the maximum current density of defect ground structure are equal in allowable range of error.
2. a kind of super conductive filter using defect ground structure as described in claim 1, which is characterized in that the substrate material
For LaAlO3, the resonator on lower layer's ground plane and upper layer is all made of yttrium barium copper oxide YBCO superconductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880987.XA CN106299559B (en) | 2016-10-09 | 2016-10-09 | A kind of high power tolerance high temperature superconduction wave filter using defect ground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880987.XA CN106299559B (en) | 2016-10-09 | 2016-10-09 | A kind of high power tolerance high temperature superconduction wave filter using defect ground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106299559A CN106299559A (en) | 2017-01-04 |
| CN106299559B true CN106299559B (en) | 2019-06-21 |
Family
ID=57716969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610880987.XA Active CN106299559B (en) | 2016-10-09 | 2016-10-09 | A kind of high power tolerance high temperature superconduction wave filter using defect ground structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106299559B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715482A (en) * | 2013-12-29 | 2014-04-09 | 南京邮电大学 | Defected ground coplanar waveguide ultra wide band limiting filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI371134B (en) * | 2008-08-29 | 2012-08-21 | Univ Nat Taiwan | Common mode wave filter device and method applicable to defected ground structure |
-
2016
- 2016-10-09 CN CN201610880987.XA patent/CN106299559B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715482A (en) * | 2013-12-29 | 2014-04-09 | 南京邮电大学 | Defected ground coplanar waveguide ultra wide band limiting filter |
Non-Patent Citations (2)
| Title |
|---|
| "Design of a High-Power Superconducting Filter With Novel DGS Structures";Tianning Zheng等;《IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY》;20140505;第1-5页 |
| 《UHF波段宽阻带高温超导滤波器设计》;卢新祥，等;《超导技术》;20160927;第39-42页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106299559A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9985329B2 (en) | Narrow-band filter having first and second resonators of different orders with resonant frequencies equal to a center frequency | |
| Zhang et al. | Compact and harmonic suppression Wilkinson power divider with short circuit anti-coupled line | |
| CN103367844A (en) | Multi-branch loading-based three passband high-temperature superconductive filter | |
| CN104319435A (en) | Substrate integrated waveguide band-pass filter applied onto WLAN (wireless local area network) system | |
| Li et al. | Novel bandpass filter based on CSRR using Koch fractal curve | |
| CN204130666U (en) | A kind of substrate integration wave-guide band pass filter being applied to wlan system | |
| CN106299559B (en) | A kind of high power tolerance high temperature superconduction wave filter using defect ground structure | |
| Kawaguchi et al. | Narrowband superconducting receiving filter for 9GHz-band weather radar | |
| Guo et al. | Design of a high-power superconducting filter using resonators with different linewidths | |
| Chen et al. | A high selectivity dual-band filter using ring-like SIR with embedded coupled open stubs resonators | |
| Zheng et al. | Design of a high-power superconducting filter with novel DGS structures | |
| CN111682292B (en) | Four-way power division filter based on four-mode resonator | |
| Kanaya et al. | Design method of miniaturized HTS coplanar waveguide bandpass filters using cross coupling | |
| Kongpop et al. | Slotline stepped circular rings for low-loss microstrip-to-slotline transitions | |
| Hong et al. | Narrowband high temperature superconducting filter for mobile communication systems | |
| CN205752478U (en) | A kind of X-band high-temperature superconductor triplexer of multi-branched coupled structure | |
| Weiqiang et al. | Wide stopband lowpass filter based on defected microstrip structure | |
| Tsurui et al. | Power-handling capability of superconducting transmit bandpass filter when number of bulk resonators is increased | |
| CN113938032B (en) | Wide-bandwidth power range rectifying circuit for electromagnetic energy recovery and transmission | |
| Jiang et al. | Design of Compact Wideband BPF Based on DGS-HMSIW | |
| Tanaka et al. | Improving power-handling capability of 4-pole HTS filters by expanding line width of resonator 2 with narrow slits | |
| Kahng et al. | Study on the Metamaterial Design Methodology to Reduce the Size of the Bandpass Filter for the Smart Grid IED | |
| Yin Zhang et al. | Dual‐mode dual‐band bandpass filter based on double‐sided parallel‐strip line | |
| Liu et al. | An HTS 20-pole microstrip filter for GSM-1800 base stations | |
| Kanaya et al. | Design and performance of miniaturized quarter-wavelength resonator bandpass filters with attenuation poles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |