CN204809366U - Controllable high temperature superconduction wave filter device of transmission zero - Google Patents
Controllable high temperature superconduction wave filter device of transmission zero Download PDFInfo
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- CN204809366U CN204809366U CN201520527523.1U CN201520527523U CN204809366U CN 204809366 U CN204809366 U CN 204809366U CN 201520527523 U CN201520527523 U CN 201520527523U CN 204809366 U CN204809366 U CN 204809366U
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- high temperature
- wave filter
- filter device
- transmission zero
- superconduction wave
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Abstract
The utility model discloses a controllable high temperature superconduction wave filter device of transmission zero, its characterized in that: include the high -temperature superconductor substrate and set up the syntonizer on this substrate, the syntonizer is arranged according to the circuit form of CQ structure, the high temperature superconduction wave filter device still includes cross coupling line and variable capacitor, cross coupling wire pair introduce cross coupling between two arbitrary syntonizers, variable capacitor inserts the intermediate position of cross coupling line. The utility model discloses a controllable high temperature superconduction wave filter device of transmission zero through programme -controlled change variable capacitor's appearance value, when realizing the high out of band rejection band pass filter performance of CQ structure, has realized that outband transmission zero's electricity is transferred controllablely.
Description
Technical field
The utility model belongs to microwave engineering techniques field, refers more particularly to a kind of high temperature superconduction wave filter of controllable transmission zero points.
Background technology
Due to the growing tension of radio-communication frequencies resource, the frequency interval being assigned to various types of communication system is more and more closeer, this is to passive device, and especially in microwave, millimeter-wave transceiver, the performance index of front end passive device are had higher requirement to reduce front end system to the decay of signal and suppressed various interference signal.This just needs high performance frequency-selecting device, and traditional frequency-selecting device (filter) such as Butterworth, Chebyshev filter only have the exponent number by increasing filter to meet the demands, in order to obtain better selectivity, just need the filter on a lot of rank just can meet the demands, the weight and volume of the filter produced is all very large, does not meet the demand of modern communication; And although elliptic function filter has good selectivity, implement the difficulty compared.Compared with conventional filter structure, transmission zero is introduced outward at the band of microstrip filter circuit by cross-coupled manner, can suppression greatly outside boostfiltering device band, improve filter sideband steepness, realize good squareness factor, and filter order need not be increased to improve the selectivity of passage, and implement and be also easy to, thus very high selectivity can be realized with the filter of less exponent number.The volume and weight of system can be reduced simultaneously, the demand of modern communication can be met.
But usually by the impact of machining accuracy, the cross-linked intensity that we introduce is some deviation unavoidable always, this, with regard to making to go out possibly cannot realize required suppression at the outer frequency that some we especially pay close attention to of filter passband, cannot meet jamproof requirement and needs are artificially tuning.For common Conventional substrate materials, we still revise by existing tuning manner, but seem not too convenient for high temperature superconduction wave filter manual tuning method.
Utility model content
For solving the problem, the high temperature superconduction wave filter device that the utility model will provide a kind of transmission zero controlled, there is volume little, the feature of high selectivity, by the capacitance of program control change variable capacitor, while realizing CQ structure high out-of-side rejection band pass filter performance, achieve and be with the electricity of outer transmission zero tune controlled.
Technical solution of the present utility model is, the high temperature superconduction wave filter device that a kind of transmission zero is controlled is provided, it is characterized in that: comprise high-temperature superconductor substrate and be arranged at this on-chip resonator, described resonator is according to CQ filter (CascadeQuadraplets, this filter is one group with four resonators, by coupled modes specific between resonator, between the 1st and 4 resonators, additionally introduce cross-couplings again, namely form CQ filter construction) circuit form arrange; Described high temperature superconduction wave filter device also comprises cross-couplings line and variable capacitor, and cross-couplings line introduces cross-couplings between described any two resonators, and variable capacitor is linked into the centre position of cross-couplings line.
Further, the open-circuit line that described resonator is λ/2 by length constructs.
Further, described variable capacitor comprises variable capacitance diode, MEMS and piezoelectric transducer.
Further, described high temperature superconduction wave filter device connects programmable power supply, the program-controlled change of capacitance of described variable capacitor.
The beneficial effects of the utility model are embodied in, the high temperature superconduction wave filter device that a kind of transmission zero provided is controlled, variable capacitor is introduced to the cross-couplings line part in transmission zero filter, by the capacitance of program control change variable capacitor, while realizing CQ structure high out-of-side rejection band pass filter performance, achieve and be with the electricity of outer transmission zero tune controlled.Especially for high temperature superconduction wave filter, and realize accurately controlled for the AF panel at filter band some fixing frequency place outer.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional C Q circuit;
Fig. 2 is the structural representation of the CQ circuit in the utility model;
Fig. 3 is a specific embodiment circuit model figure of the present utility model;
Fig. 4 is the simulation result figure of the utility model specific embodiment.
Drawing reference numeral in Fig. 1-4 illustrates:
1 input, 2 resonators, 3 cross-couplings lines, 4 outputs, 5 fixed capacities, 6 variable capacitors
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As the structural representation that Fig. 1 is traditional C Q circuit, between input 1 with output 4, be connected resonator 2, between resonator 2, introduce cross-couplings by cross-couplings line 3.
As the CQ electrical block diagram that Fig. 2 is in the present embodiment filter, the high temperature superconduction wave filter device that the transmission zero of the present embodiment is controlled, comprise high-temperature superconductor substrate and be arranged at this on-chip resonator 2, described resonator 2 arranges according to the circuit form of CQ structure; Described high temperature superconduction wave filter device also comprises cross-couplings line 3 and variable capacitor 6, and cross-couplings line 3 introduces cross-couplings between described any two resonators 2, and variable capacitor 6 is linked into the centre position of cross-couplings line 3.
As preferably, length is adopted to be that the open-circuit line of λ/2 constructs described resonator 2.
As preferably, described variable capacitor 6 comprises variable capacitance diode, MEMS and piezoelectric transducer.
Preferably, described high temperature superconduction wave filter device connects programmable power supply, and described programmable power supply is for changing the capacitance of variable capacitor 6.
As shown in Figure 2, in CQ circuit structure, cross-couplings line 3 introduces cross-couplings between described any two resonators 2, cross-couplings line 3 can be formed usually fixed capacity coupling, be equivalent to electric capacity 5; Signal transmission is entered by input 1, is exported after resonator by output 4.By adjustment variable capacitor capacitance, formed and perturbation is produced to the cross-couplings amount represented by electric capacity 5, and then the transmission zero location realized outside filter passband is controlled, actually appears the controlled of logical Out-of-band rejection.
As shown in Figure 3, as the enforceable scheme of one, to comprise the high temperature superconduction wave filter of 4 resonators 2, also comprise a cross-couplings line 3 and a variable capacitor 6.Adopt length be the open-circuit line of λ/2 to construct described resonator 2, traditionally the circuit form of CQ structure arranges, and introduces the cross-couplings of certain stiffness of coupling between resonator to first and the 4th by described cross-couplings line 3.Meanwhile, at the centre position of cross-couplings line 3 access variable capacitor 6, the high temperature superconduction wave filter that transmission zero is controlled is formed.It is characterized in that forming cross-coupling coefficient restructural between the first resonator and the 4th resonator by cross-couplings line 3 in conjunction with variable capacitor 6.Be illustrated in figure 4 the simulation result based on the present embodiment, in Fig. 4, the variable capacitor of 5 groups of different capacitances is adopted to test, variable capacitance capacitor amount adopts 1pF, 2pF, 3pF, 4pF, 5pF respectively, when the capacitance change of variable capacitor, filter transmission zero change in the impregnable situation of bandwidth is obvious.By the method, the cross-linked intensity introduced is adjustable, can realize eliminating under the impact of other factors such as machining deviation, and the suppression needed for the outer frequency place that some we especially pay close attention to of filter passband realizes is optimum, meets jamproof requirement.And be directed to high temperature superconduction wave filter manual tuning method especially and not too facilitate this shortcoming, in this paper a kind of be that the controlled design of filter structure of the transmission zero of substrate material more has Practical Project Practical significance with high-temperature superconductor.
Operation principle of the present utility model is, by changing the capacitance being carried in the variable capacitor 6 of cross-couplings line 3, realize the regulating and controlling to the cross-couplings power of whole circuit, while realizing CQ structure high out-of-side rejection band pass filter performance, achieve and be with the electricity of outer transmission zero tune controlled.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present utility model, should be understood to that protection range of the present utility model is not limited to so special statement and embodiment.Those of ordinary skill in the art can make according to these technology enlightenment disclosed in the utility model and variously not depart from other various concrete distortion and combination of the present utility model, and these distortion and combination are still in protection range of the present utility model.
Claims (4)
1. the high temperature superconduction wave filter device that transmission zero is controlled, is characterized in that: comprise high-temperature superconductor substrate and be arranged at this on-chip resonator, described resonator arranges according to the circuit form of CQ structure; Described high temperature superconduction wave filter device also comprises cross-couplings line and variable capacitor, and cross-couplings line introduces cross-couplings between described any two resonators, and variable capacitor is linked into the centre position of cross-couplings line.
2. the high temperature superconduction wave filter device that transmission zero according to claim 1 is controlled, is characterized in that: the open-circuit line that described resonator is λ/2 by length constructs.
3. the high temperature superconduction wave filter device that transmission zero according to claim 1 and 2 is controlled, is characterized in that: described variable capacitor comprises variable capacitance diode, MEMS and piezoelectric transducer.
4. the high temperature superconduction wave filter device that transmission zero according to claim 3 is controlled, is characterized in that: high temperature superconduction wave filter device is also connected with programmable power supply, and the capacitance of described variable capacitor is by program control change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527523.1U CN204809366U (en) | 2015-07-20 | 2015-07-20 | Controllable high temperature superconduction wave filter device of transmission zero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527523.1U CN204809366U (en) | 2015-07-20 | 2015-07-20 | Controllable high temperature superconduction wave filter device of transmission zero |
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| CN204809366U true CN204809366U (en) | 2015-11-25 |
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| CN201520527523.1U Expired - Fee Related CN204809366U (en) | 2015-07-20 | 2015-07-20 | Controllable high temperature superconduction wave filter device of transmission zero |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785259A (en) * | 2016-11-30 | 2017-05-31 | 中国电子科技集团公司第二十九研究所 | A kind of micro-strip cross-coupled filter |
| 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 |
-
2015
- 2015-07-20 CN CN201520527523.1U patent/CN204809366U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785259A (en) * | 2016-11-30 | 2017-05-31 | 中国电子科技集团公司第二十九研究所 | A kind of micro-strip cross-coupled filter |
| 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 |
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Legal Events
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|---|---|---|---|
| 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: 20151125 Termination date: 20210720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |