CN101068050B - A Planar High Temperature Superconducting Bandpass Filter with Hybrid Structure - Google Patents
A Planar High Temperature Superconducting Bandpass Filter with Hybrid Structure Download PDFInfo
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Abstract
本发明涉及一种用来解决高温超导滤波器功率承载能力不足的问题的，混合结构的平面高温超导滤波器，该滤波器由不同类型谐振器、或者同一类型不同几何尺寸的谐振器组成，在设计滤波器时，可以在滤波器的不同的位置选择具有不同的谐振模式，几何尺寸，功率承受能力的谐振器，整合弥补其的劣势，从而在保证功率承载能力不变的情况下，在一定的尺寸内，设计出具有更高阶数，更好频率响应的高温超导滤波器。
The invention relates to a planar high-temperature superconducting filter with a hybrid structure, which is used to solve the problem of insufficient power carrying capacity of the high-temperature superconducting filter. The filter is composed of different types of resonators or resonators of the same type and different geometric sizes. , when designing a filter, you can choose resonators with different resonance modes, geometric dimensions, and power handling capabilities in different positions of the filter, and integrate them to make up for their disadvantages, so that the power carrying capacity remains unchanged. Within a certain size, a high-temperature superconducting filter with a higher order and better frequency response is designed.
Description
Technical field
The invention belongs to the microwave engineering field, specifically, the present invention relates to a kind of novel high-temperature superconductor flat filter with more high-power bearing capacity.
Background technology
In the microwave engineering, use superconducting microstrip resonator can form the superconduction flat filter (a kind of passive device) of different rank, use is used for selecting the signal of certain frequency in various microwave devices (as radar, mobile telephone base station, microwave communication device, radio astronomical telescope etc.).At the front end of various microwave receiving systems, often use filter to suppress signal frequency not, the signal frequency that needs is passed through smoothly, and, often used filter filtering unwanted signal frequency at transmitting terminal.
Planar high-temperature superconducting filter is a kind of planar device made from high temperature superconducting materia, and it generally is identical by several resonance frequencys, belongs to same type, the essentially identical planar resonator of geometric shape and forms by certain regularly arranged.Normally used planar resonator, be with microstrip line through deformation process such as broadenings, coiling, bifurcated, form that figure miscellaneous constitutes.The analysis showed that, under certain input power, microwave current density distribution on the resonator is uneven, maximum current density determined resonator the power bearing capacity---maximum current density is more little, distribution of current density is even more, means that the power maximum of the microwave signal that resonator can carry is just high more.Microwave current distribution situation on the resonator, comprise maximum current density and distribution consistency degree, in close relations with the graphic structure of resonator, resonator for certain graphic structure, the increase of figure live width helps reducing the maximum current density in the resonator and making electric current distribution more even, thereby helps improving the power bearing capacity of resonator.But the increase of live width must cause the increase of the overall dimension of resonator.Consider the restriction of refrigeration work consumption and superconducting thin film size, this tends to bring very big difficulty to the increase of filter order, and the increase of exponent number is often directly relevant with the raising of filter freguency response characteristic.Like this, how to take into account the requirement of frequency response characteristic three aspects of the power bearing capacity of filter and overall dimension and filter, become the main challenge that current high power super conductive filter design runs into.
Deep theoretical research, Computer Simulation and experimental measurements show that further a filter inside, the microwave power of each resonator carrying is different.For traditional single structure filter, its inside has only the microwave power of partial resonance device carrying very big, and the microwave power of other resonator carrying is less relatively.If we can select suitable resonator configuration according to the watt level of each resonator carrying, make the maximum microwave power of each resonator carrying reach unanimity.Like this, when keeping same power bearing capacity, the overall dimension of filter can reduce greatly.So just be further to increase exponent number, improve performance of filter, wide space is provided.
In the planar resonator commonly used at present, several higher-wattage bearing capacitys that have are arranged.For example, bimodulus sheet type resonator, vertical bar type resonator, or the like.The physical dimension of bimodulus sheet type structure resonance device is bigger, and load power is very capable, and particularly a resonator has two kinds of utilizable modes of resonance, is equivalent to two rank resonators, becomes its unique advantage.But the area that this resonator occupies is too big, and the Coupling Design between the different mode is comparatively complicated, gives and makes high exponent number, high performance high power filter brings great difficulty.In the microstrip line shape resonator, with the power bearing capacity maximum of vertical bar type resonator.Though the power bearing capacity is not as bimodulus sheet type resonator, its physical dimension is much smaller, and the mode of resonance that involves is simple relatively, is convenient to design.In addition, be that the microstrip line shape resonator of representative also has an advantage with the vertical bar type, i.e. width by adjusting microstrip line (or according to the distribution of electric current, adjusting the part width of microstrip line) can change its power bearing capacity.Therefore, in design, we can also further reduce the live width of the lower resonator of load power.Like this in same filter, we can carry demand according to power, these two kinds of dissimilar resonators are combined, use dissimilar, or the resonator of the different live widths of same type, realize having complementary advantages, then can design the high-performance high temperature superconduction wave filter that the power bearing capacity is strong, size is suitable, exponent number is higher.
Summary of the invention
Deficiency at the prior art existence, the objective of the invention is to propose a kind of design with planar high-temperature superconducting filter of mixed structure, enable both to satisfy the requirement of power carrying, can increase the exponent number of filter again, design satisfactory high-performance high temperature superconduction wave filter.
To achieve the above object of the invention, the design that the present invention proposes comprises: the high-temperature superconductor flat filter can use dissimilar resonators when design, perhaps same type, but local size exists the resonator of notable difference to make up filter.
In the technique scheme, described dissimilar resonator is meant that there is obvious difference in the geometric configuration of resonator.
In technique scheme, described dissimilar resonator can be a bimodulus sheet type resonator, and vertical bar type resonator also can be other microstrip type resonator.
In the technique scheme, described local size exists notable difference to be meant the geometric configuration unanimity of resonator, but guarantees under the constant substantially situation of its resonance frequency the physical dimension generation obvious variation that some is local.
In technique scheme, in order to solve the power carrying problem of filter, in planar high-temperature superconducting filter, can use the resonant element of the resonator of bimodulus sheet type resonator, vertical bar type resonator or other type simultaneously as filter, be combined into filter, use the input and output side of 50 ohm of high-temperature superconductive micro-strip line structures simultaneously as filter.
In technique scheme, described type dual-mode resonator is a microstrip line of being made up of two-layer superconducting thin film and middle monocrystalline medium up and down, and this microstrip line adds that by a symmetrical structure destruction symmetrical structure forms.
In the technique scheme, described symmetrical structure is a square, the rectangle of length-width ratio≤1.05, regular polygon, circle, ellipse, Fang Huan, annulus, elliptical ring.
In the technique scheme, described destruction symmetrical structure can be by increasing on symmetric figure or removing a little block graphics and realize.
In the technique scheme, each resonator in described type dual-mode resonator is equivalent to two identical resonant elements of resonance frequency in filter.
In technique scheme, described vertical bar type resonator is a microstrip line of being made up of up and down two-layer superconducting thin film and middle monocrystalline medium, this microstrip line be shaped as rectangle.
In technique scheme, by a relatively large margin variation can take place with the variation of its length-width ratio in the power bearing capacity of the vertical bar resonator that described length and width are adjustable.
In technique scheme, described other micro strip line type resonator is with deformation process such as the rectangle process broadening of described vertical bar type resonator, stretching, coiling, splitting, bifurcated, the resonator of formed figure of all kinds.
In the technique scheme, described input and output coupling line can directly link together with vertical bar type resonator, also can not be attached thereto.
In technique scheme, the CURRENT DISTRIBUTION on each resonant element on the planar high-temperature superconducting filter of described mixed structure is uneven, and in general its power bearing ability also is uneven.
In technique scheme, each resonant element that described power bearing ability has nothing in common with each other can be by changing the size of some dimension, and for example the length-width ratio of vertical bar type resonator makes their power bearing ability reach unanimity.
Compared with prior art, the planar high-temperature superconducting filter of mixed structure provided by the invention can effectively be taken into account power bearing capacity, the size of super conductive filter, the needs of three aspects of exponent number, can in limited space, keep under the unabated prerequisite of power bearing capacity, make the planar high-temperature superconducting filter of higher exponent number, better filter response.
Description of drawings
Fig. 1 a is the geometric configuration schematic diagram of several dissimilar how much resonators;
Fig. 1 b is same resonance frequency but the different hair fastener type resonator schematic diagram of local size;
Fig. 2 a is the geometry schematic diagram of flat superconducting vertical bar type resonator;
Fig. 2 b is that the geometry of the flat superconducting vertical bar type resonator of different length-width ratios compares schematic diagram;
Fig. 3 a is a kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 3 b is the another kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 3 c is the another kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 3 d is the another kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 3 e is the another kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 3 f is the another kind of geometry schematic diagram of flat superconducting bimodulus sheet type resonator;
Fig. 4 a is a kind of geometry schematic diagram of input and output microstrip line and resonator coupled modes;
Fig. 4 b is the input and output microstrip line that proposes of the present invention and the another kind of geometry schematic diagram of resonator coupled modes;
Fig. 5 a is the arrangement scheme of the planar high-temperature superconducting filter of a kind of 6 grades of mixed structures of proposing of the present invention;
Fig. 5 b is the arrangement scheme of the planar high-temperature superconducting filter of 6 grades of mixed structures of another kind of proposing of the present invention;
Fig. 5 c is the arrangement scheme of the planar high-temperature superconducting filter of 6 grades of mixed structures of another kind of proposing of the present invention;
Fig. 5 d is the arrangement scheme of the planar high-temperature superconducting filter of a kind of 8 grades of mixed structures of proposing of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done description further.
Fig. 1 a has provided the geometric configuration of several dissimilar how much resonators, utilize these dissimilar resonators can assembly go out to have different operating frequency and power bearing capacity planar high-temperature superconducting filter.Fig. 1 b has provided several same resonance frequencys but the different hair fastener type resonator of local size, adjusts the adjusting that can realize the resonant power converter bearing capacity by certain the dimension size to resonator.
With reference to Fig. 2 a, can design a vertical bar type resonator.
With reference to the figure shown in Fig. 3 a, can design a bimodulus sheet type resonator.
With reference to Fig. 4 a, Fig. 5 a makes input microstrip line and vertical bar type resonator 1 produce coupling, and output microstrip line and vertical bar resonator 4 produce coupling.
With reference to Fig. 5 a, because between the bimodulus sheet type resonator 2,3, and all having electromagnetic coupled between bimodulus sheet type resonator 2,3 and the vertical bar type resonator 1,4,6 grades of high temperature superconduction wave filters that can carry big microwave power signal promptly can be designed in the position of suitably adjusting between them.
With reference to the figure shown in Fig. 2 a, can design a vertical bar type resonator.
With reference to the figure shown in Fig. 3 b, can design a bimodulus sheet type resonator.
With reference to Fig. 4 b, Fig. 5 b makes input microstrip line and vertical bar resonator 1 produce coupling, and output microstrip line and vertical bar resonator 4 produce coupling.
With reference to Fig. 5 b, because between the bimodulus sheet type resonator 2,3, and all having electromagnetic coupled between bimodulus sheet type resonator 2,3 and the vertical bar resonator 1,4,6 grades of high temperature superconduction wave filters that can carry big microwave power signal promptly can be designed in the position of suitably adjusting between them.
With reference to the figure shown in Fig. 2 a, can design a vertical bar type resonator.
With reference to the figure shown in Fig. 3 c, can design a bimodulus sheet type resonator.
With reference to Fig. 4 b, Fig. 5 c makes input microstrip line and bimodulus sheet type resonator 1 produce coupling, and output microstrip line and bimodulus sheet type resonator 4 produce coupling.
With reference to Fig. 5 c, because between the bimodulus sheet type resonator 1,4, and all having electromagnetic coupled between vertical bar resonator 2,3 and the vertical bar resonator 2,3,6 grades of high temperature superconduction wave filters that can carry big microwave power signal promptly can be designed in the position of suitably adjusting between them.
Embodiment 4
With reference to the figure shown in Fig. 2 a, can design a vertical bar type resonator.
With reference to the figure shown in Fig. 2 b, can design two vertical bar type resonators that length-width ratio is different.
With reference to the figure shown in Fig. 3 d, can design a bimodulus sheet type resonator.
With reference to Fig. 4 a, Fig. 5 d makes little band of input and vertical bar type resonator 6 produce coupling; Export little band and the 1 generation coupling of vertical bar type resonator.
With reference to Fig. 5 d, vertical bar type resonator 6,5 will be coupled between the vertical bar type resonator 1,2; Also can produce coupling between the bimodulus sheet type resonator 3,4; Also there is coupling between vertical bar type resonator 2,5 and the bimodulus sheet type resonator 3,4, suitably adjusts the relative position between them, promptly can design 8 grades of high temperature superconduction wave filters that can carry big microwave power signal.According to such thinking, the number that can further increase bimodulus sheet type resonator or vertical bar type resonator improves the progression of filter.
All adopt the input and output side of 50 ohm of high-temperature superconductive micro-strip line structures in above-mentioned each embodiment as filter, wherein the resonator all direct and in the filter of the input/output terminal in the 1st, 2,3 embodiments links to each other, and the input/output terminal in the embodiment 4 then links to each other with resonator by coupled modes.
Claims (7)
1. the planar high-temperature superconducting band pass filter of a mixed structure, it is characterized in that, this filter is identical by resonance frequency, but the resonator with different structure is formed, have the dissimilar resonator of marked difference and/or belong to the different resonator of same type physical dimension but the resonator of described different structure comprises geometric configuration, described dissimilar resonator comprises vertical bar type resonator, bimodulus sheet type resonator, L type resonator, hair fastener resonator, open-loop resonator, variation hair fastener resonator, Hilbert resonator or spiral type resonator; Described filter uses the input and output side of high-temperature superconductive micro-strip line structure as filter, this input/output terminal directly and resonator link together, perhaps do not link together with resonator.
2. by the planar high-temperature superconducting band pass filter of the described mixed structure of claim 1, it is characterized in that described vertical bar type resonator is a microstrip line of being made up of two-layer superconducting thin film and middle monocrystalline medium up and down, this microstrip line be shaped as rectangle.
3. by the planar high-temperature superconducting band pass filter of the mixed structure described in the claim 1, it is characterized in that, describedly belong to a class together but the different resonator of physical dimension, be meant that length-width ratio has the vertical bar type resonator of obvious change.
4. by the planar high-temperature superconducting band pass filter of the described mixed structure of claim 1, it is characterized in that the power bearing capacity of described vertical bar type resonator can recently be regulated by the length and width that change rectangle vertical bar type resonator.
5. by the planar high-temperature superconducting band pass filter of the described mixed structure of claim 1, it is characterized in that described bimodulus sheet type resonator is equivalent to two resonant elements in filter.
6. press the planar high-temperature superconducting filter of the described mixed structure of claim 5, it is characterized in that, described bimodulus sheet type resonator is a microstrip line of being made up of up and down two-layer superconducting thin film and middle monocrystalline medium, the geometry of this microstrip line comprises a symmetrical structure, be that the rectangle of square or length-width ratio≤1.05 or the circular oval or square ring of regular polygon or annulus or elliptical ring and one increase or remove the destruction symmetrical structure that the part figure is realized on described symmetrical structure.
7. press the planar high-temperature superconducting band pass filter of the described mixed structure of claim 1, it is characterized in that, described dissimilar resonator also comprises after described vertical bar type resonator process broadening or stretching or coiling or splitting or the bifurcated deformation process, the resonator of formed figure of all kinds.
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| US9042847B2 (en) | 2012-11-08 | 2015-05-26 | Hauwei Technologies Co., Ltd. | Filter, receiver, transmitter and transceiver |
| CN104425858B (en) * | 2013-09-10 | 2019-06-25 | 中兴通讯股份有限公司 | Filter |
| JP6941832B2 (en) * | 2017-06-02 | 2021-09-29 | 国立大学法人山梨大学 | Multi-band bandpass filter and its design method |
| CN108110387A (en) * | 2017-11-20 | 2018-06-01 | 综艺超导科技有限公司 | A kind of high temperature superconduction wave filter of the outer high power interference of anti-band |
| CN108493541A (en) * | 2018-02-02 | 2018-09-04 | 综艺超导科技有限公司 | A kind of compact filter of resistance to high-power high-temperature superconducting |
| CN109244610B (en) * | 2018-09-13 | 2024-05-10 | 中国电子科技集团公司第十六研究所 | Adjustable dual-mode filter |
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| US5496796A (en) * | 1994-09-20 | 1996-03-05 | Das; Satyendranath | High Tc superconducting band reject ferroelectric filter (TFF) |
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| US5496796A (en) * | 1994-09-20 | 1996-03-05 | Das; Satyendranath | High Tc superconducting band reject ferroelectric filter (TFF) |
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