CN106129554B - A kind of high-temperature superconductor notch filter based on right-hand man's zeroth order circuit - Google Patents
A kind of high-temperature superconductor notch filter based on right-hand man's zeroth order circuit Download PDFInfo
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- CN106129554B CN106129554B CN201610716551.7A CN201610716551A CN106129554B CN 106129554 B CN106129554 B CN 106129554B CN 201610716551 A CN201610716551 A CN 201610716551A CN 106129554 B CN106129554 B CN 106129554B
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- zeroth order
- resonant element
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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
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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
- H01P1/20327—Electromagnetic interstage coupling
- H01P1/20354—Non-comb or non-interdigital filters
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Abstract
The present invention provides a kind of high-temperature superconductor notch filters based on right-hand man's zeroth order resonance circuit, it include: the first zeroth order resonant element and the 4th zeroth order resonant element being symmetrical set, the the second zeroth order resonant element and third zeroth order resonant element being symmetrical set, the first transmission line and third transmission line being symmetrical set, second transmission line, first cochin structure and the signal input part and signal output end being symmetrical set, the first zeroth order resonant element, second zeroth order resonant element, third zeroth order resonant element and the 4th zeroth order resonant element are respectively used to generate a single mode trap.Notch filter structure of the invention is simple and compact, and small in size, mentality of designing is simple.
Description
Technical field
The present invention relates to technical field of micro communication, more specifically to a kind of height based on right-hand man's zeroth order circuit
Temperature superconductive notch filter.
Background technique
An important devices of the notch filter as band logical is integrated in radio-frequency front-end and with resistance, with radio-frequency front-end
Simplify the necessity of bandstop filter, it is also more and more important to the research of notch filter.
At present there are mainly two types of the designs of notch filter: first, minor matters are grounded by increasing when designing filter,
At this point, the ground connection minor matters when series resonance, are equivalent to short-circuited node, and then realize under the specific frequency under specific frequency
Notch filter characteristic；Second, passing through the cascade of a bandpass filter and a bandstop filter.But it is above-mentioned the first set
In meter, ground connection minor matters change the resonance circuit of filter, and matching and debugging is difficult, and then has an impact to former performance of filter；
And in above-mentioned second of design, the cascade between bandpass filter and bandstop filter, so that the notch filter designed
Overall volume it is larger, and structure is complicated.
Therefore, how to design with good performance of filter and the simple and small in size notch filter of structure at
For problem urgently to be resolved.
Summary of the invention
The technical problem to be solved in the present invention is that aiming at the shortcomings in the prior art, providing based on right-hand man's zeroth order electricity
The high-temperature superconductor notch filter on road.
There is provided a kind of high temperature based on right-hand man's zeroth order resonance circuit for technical proposal that the invention solves the above-mentioned problems
Superconduction notch filter, comprising: the first zeroth order resonant element and the 4th zeroth order resonant element, bilateral symmetry being symmetrical set
The the second zeroth order resonant element and third zeroth order resonant element that are arranged, the first transmission line and third transmission that are symmetrical set
Line, second transmission line, the first cochin structure and the signal input part and signal output end being symmetrical set, wherein described
First transmission line connects with the second end of the first zeroth order resonant element and the first end of the second zeroth order resonant element respectively
Connect, the second transmission line respectively with the second end of the second zeroth order resonant element and the third zeroth order resonant element
Two ends connection, the third transmission line respectively with the first end of the third zeroth order resonant element and the 4th zeroth order resonance list
The second end connection of member, the signal input part are connect with the first end of the first zeroth order resonant element, the signal output
End is connect with the second end of the 4th zeroth order resonant element, and the first cochin structure setting is in the first transmission line and institute
It states between third transmission line so that the signal input part and signal output end generating source load coupling；
The first zeroth order resonant element, the second zeroth order resonant element, third zeroth order resonant element and the 4th zeroth order resonance
Unit is respectively used to generate a single mode trap；
The first zeroth order resonant element and the second zeroth order resonant element intercouple in the first transmission line, institute
It states the second zeroth order resonant element and the third zeroth order resonant element intercouples in the second transmission line, the third zeroth order
Resonant element and the 4th zeroth order resonant element intercouple in the third transmission line.
Wherein, the first transmission line and the third transmission line are the microstrip line of bending, and the second transmission line is curved
The microstrip line of folding.
Wherein, the first transmission line and the third transmission line are L-shaped, and the first transmission line includes mutually electric
The first coupling part and the second coupling part of connection, the third transmission line includes the third coupling part and the 4th coupling being electrically connected to each other
Conjunction portion；
Second coupling part is parallel to each other with the 4th coupling part, and the first cochin structure setting is described second
One end of coupling part and the 4th coupling part；
The second transmission line includes the 5th coupling part, is used for the 5th coupling part and the second zeroth order resonance list
The first connecting portion of the second end electrical connection of member and for by the 5th coupling part and the third zeroth order resonant element
The second connecting portion of second end electrical connection, wherein the shape of the 5th coupling part is U-shaped.
Wherein, the first cochin structure includes 9 strip lines that are arranged in parallel and intercoupling, two-by-two strip line
Between gap be 0.05mm.
Wherein, the first zeroth order resonant element, the second zeroth order resonant element, third zeroth order resonant element and the 4th zeroth order
The shape of resonant element is all the same, and include: a uniform impedance resonator and one with the uniform impedance resonator phase mutual coupling
Right-hand man's circuit of conjunction and the first side that uniform impedance resonator both ends are set and are coupled with right-hand man's circuit
Feeder line and the second side feeder line；
Right-hand man's circuit include the feed coupled end being electrically connected to each other and the second cochin structure and with the feed
Inductor wire and patch that coupled end is electrically connected and being successively electrically connected to each other, the inductor wire are connect from the feed coupled end
Place is electrically connected around the periphery of the patch one week with the patch.
Wherein, the second cochin structure includes 4 strip lines to intercouple, wherein one end of 4 strip lines
It is electrically connected with the feed coupled end.
Wherein, the high-temperature superconductor notch filter is arranged on the upper surface of a high-temperature superconductor medium substrate, and described
Ground metal layer is provided on the lower surface of high-temperature superconductor medium substrate.
The invention has the benefit that high-temperature superconductor notch filter simple and compact structure of the invention, small in size.Together
When, it is made of high temperature superconducting materia, and zeroth order resonant element uses right-hand man's circuit, and then high-temperature superconductor notch filter product
Quality factor is high.In addition, zeroth order resonant element uses right-hand man's circuit, it is possible to prevente effectively from stopband harmonic wave produces the interference at passband
Life reaches the trap effect for only filtering out assigned frequency noise jamming.
Detailed description of the invention
Fig. 1 is the side view of the high-temperature superconductor notch filter based on right-hand man's zeroth order circuit of the embodiment of the present invention.
Fig. 2 is the top view of the high-temperature superconductor notch filter based on right-hand man's zeroth order circuit of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the zeroth order resonant element in embodiment illustrated in fig. 1.
Fig. 4 is the analogous diagram of the high-temperature superconductor notch filter shown in FIG. 1 based on right-hand man's zeroth order circuit.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1, being the side of the high-temperature superconductor notch filter based on right-hand man's zeroth order circuit of the embodiment of the present invention
View, the high-temperature superconductor notch filter 1 are arranged in the upper surface of a high-temperature superconductor medium substrate 3, and high-temperature superconductor medium base
The lower surface of plate 3 is arranged a metal ground plane 2, the high-temperature superconductor medium substrate 3 with a thickness of 0.5mm.
With reference to Fig. 2, the substantially symmetrical setting of the high-temperature superconductor notch filter 1, including the first zeroth order resonance
Unit 11, the second zeroth order resonant element 12, third zeroth order resonant element 22, the 4th zeroth order resonant element 21, first transmission line 13,
Second transmission line 30, third transmission line 23, the first cochin structure 40 and signal input part PIN and signal output end POUT, wherein
First zeroth order resonant element 11 and the symmetrical setting of the 4th zeroth order resonant element 21, the second zeroth order resonant element 12 and third
The symmetrical setting of zeroth order resonant element 22, first transmission line 13 and the symmetrical setting of third transmission line 23.First passes
Defeated line 13 is connect with the first end of the second end of the first zeroth order resonant element 11 and the second zeroth order resonant element 12 respectively, and described
Two transmission lines 30 respectively with the second end of the second zeroth order resonant element 12 and the third zeroth order resonant element 22 second
End connection, the third transmission line 23 respectively with the first end of the third zeroth order resonant element 22 and the 4th zeroth order resonance
The second end of unit 21 connects, and the signal input part PIN is connect with the first end of the first zeroth order resonant element 11, described
Signal output end POUT is connect with the second end of the 4th zeroth order resonant element 21, and the first cochin structure 40 is arranged in institute
It states between first transmission line 13 and the third transmission line 23 so that the signal input part PIN and signal output end POUT
Generating source load coupling.
The first zeroth order resonant element 11 intercouples with the second zeroth order resonant element 12 in first transmission
Line 13, the second zeroth order resonant element 12 intercouple with the third zeroth order resonant element 22 in the second transmission line
30, the third zeroth order resonant element 22 intercouples with the 4th zeroth order resonant element 21 in the third transmission line 23.
First zeroth order resonant element 11, the second zeroth order resonant element 12, third zeroth order resonant element 22 and the 4th zeroth order are humorous
The shape of vibration unit 21 is identical, is zeroth order resonant element, and each zeroth order resonant element generates a single mode trap, centre frequency
It for a particular value, is determined according to specific structure size, specific design feature and principle will be described in detail below.
When giving signal input part PIN and signal output end mono- driving source of POUT respectively, the first zeroth order resonant element 11, the second zeroth order are humorous
Vibration unit 12, third zeroth order resonant element 22 and the 4th zeroth order resonant element 21 pass through first transmission line 13, second transmission line 30
It is successively coupled with third transmission 23, forms four zeroth order resonant element cascades, and then realize the filtering characteristic of passband trap.
To make the compact in size of the high-temperature superconductor notch filter, first transmission line 13 and third transmission line 23 are bending
Microstrip line, second transmission line 30 also for bending microstrip line, specifically, the shape of first transmission line 13 and third transmission line 23
Identical, in the present embodiment, L-shaped, first transmission line 13 includes the coupling of the first coupling part 13a being electrically connected to each other and second
Portion 13b, third transmission line 23 include the third coupling part 23a and the 4th coupling part 23b being electrically connected to each other, wherein the second coupling
Portion 13b and the 4th coupling part 23b are arranged in parallel, and the setting of the first cochin structure 40 is coupled in the second coupling part 13b with the 4th
One end of portion 23b.First zeroth order is adjusted in the sum of the physical length for adjusting the first coupling part 13a and the second coupling part 13b
The coefficient of coup between resonant element 11 and the second zeroth order resonant element 12；Third coupling part 23a is adjusted to couple with the 4th
The coupled systemes between third zeroth order resonant element 22 and the 4th zeroth order resonant element 21 are adjusted in the sum of the physical length of portion 23b
Number.
In the present embodiment, the first cochin structure 40 includes 9 strip lines, and 9 strip lines are arranged in parallel, and mutually
Coupling, the gap between strip line is 0.05mm two-by-two, and the strip line connecting with one end of the second coupling part 13b has 5, with the
The strip line of one end connection of four coupling part 23b has 4.
Second transmission line 30 is a symmetrical structure, symmetrical setting, including the 5th coupling part 30a, first connecting portion
30b and second connecting portion 30c, wherein first connecting portion 30b is used for the 5th coupling part 30a and the second zeroth order resonant element 12
Second end electrical connection, second connecting portion 30c is used for the second end electricity of the 5th coupling part 30a and third zeroth order resonant element 22
Connection.The shape of 5th coupling part 30a is in U-shape, and adjusts the physical length of the 5th coupling part 30a, and the second zeroth order resonance is adjusted
The coefficient of coup between unit 12 and third zeroth order resonant element 22.
Below by zeroth order resonant element design feature and principle be illustrated.
First zeroth order resonant element 11, the second zeroth order resonant element 12, third zeroth order resonant element 22 and the 4th zeroth order are humorous
The shape of vibration unit 21 is identical, is zeroth order resonant element 10, in the first end and second for giving the zeroth order resonant element 10 respectively
FD feed is held, which generates the single mode trap that a centre frequency is a particular value.
Specifically, with reference to Fig. 3, which includes a uniform impedance resonator 200 and a right-hand man
Circuit 100, wherein the uniform impedance resonator 200 is arranged in parallel with right-hand man's circuit 100, in the present embodiment, the two it
Between gap be 0.1mm.Right-hand man's circuit 100 includes inductor wire 102, patch 101, feed coupled end 103 and the second cochin knot
Structure 104, wherein feed coupled end 103 is electrically connected to each other with the second cochin structure 104, inductor wire 102 and the mutually electricity of patch 101
Connection, and the inductor wire 102 is also electrically connected with feed coupled end 103, the both ends of uniform impedance resonator 200 respectively as this zero
The first end P1 and second end P2 of rank resonant element 10.In the present embodiment, in order to reduce the size of zeroth order resonant element, inductance
Line 102 is electrically connected from the junction of feed coupled end 103 around the peripheral Zhou Eryu patch 101 of patch 101.Uniform impedance is humorous
Vibration device 200 is parallel to each other with the feed coupled end 103 being electrically connected to each other and the second cochin structure 104, and gap is 0.1mm.
When the first end P1 and second end P2 of the zeroth order resonant element 10 are fed into driving source, right-hand man's circuit 100 is opened
Beginning work is equivalent to form series resonant circuit at this point, patch 101 is connected with inductor wire 102, in turn, corresponding resonance frequency
It is controlled with three dB bandwidth by the physical length L 4 of the physical length L c and width Wc of patch 101 and inductor wire, feeds coupled end
103 with the first end P1 of the zeroth order resonant element 10 and second end P2 for coupling, and feeds coupled end 103 and the second cochin knot
Structure 104 is for balancing right-hand man's circuit 100, even if right-hand man's circuit 100 reaches zeroth order resonance.
Second cochin structure 104 includes four strip lines arranged in parallel, wherein two strip lines are coupled with feed
103 connection of end, other two strip lines connect with the strip line that one is vertically arranged, the strip line being vertically arranged with it is described other two
Root strip line is mutually perpendicular to, and in the present embodiment, the gap d 3 between four strip lines arranged in parallel is 0.1mm.
The zeroth order resonant element 10 further include first in feeder line 51 and second feeder line 52, wherein the first side feeder line 51 and
Two side feeder lines 52 are connect with the both ends of uniform impedance resonator 200 respectively, i.e., connect with first end P1 and second end P2, and with a left side
Right hand circuit 100 couples, for enhancing the stiffness of coupling between uniform impedance resonator 200 and right-hand man's circuit 100, in this reality
It applies in example, the first coupling gap in feeder line 51 and second between feeder line 52 and right-hand man's circuit 100 is 0.05mm.In zeroth order
When the first end P1 and second end P2 of resonant element 10 are fed into driving source, first in feeder line 51 and second feeder line 52 make a left side
The resonance characteristic of right hand circuit 100 is more preferable.
In the present embodiment, high-temperature superconductor notch filter is designed according to above-mentioned zeroth order resonant element, centre frequency is
1.8GHz, the dielectric constant of the high-temperature superconductor medium substrate used is 9.78, and with a thickness of 0.5mm, material MgO, above and below
Surface is ybco film, and by simulation optimization, with reference to Fig. 2 and Fig. 3, the specific size of the high-temperature superconductor notch filter is such as
Under (unit: mm): L1a=2.4, L1b=4.35, L2a=32.0, L2b=0.3, d=1.0, L1=5.9, W1=0.5, L2=
3.1, W2=0.7, L3=2.9, W3=d3=0.1, L4=13.1, W4=0.1, Lc=3.6, Wc=1.8.Overall dimensions are
25.6mm*16.85mm.Simulate the high-temperature superconductor notch filter using FEKO software, as shown in figure 4, the height
The centre frequency of temperature superconductive notch filter is 1.8GHz, bandwidth 40MHz.The high-temperature superconductor notch filter knot of the present embodiment
Structure is simple and compact, small in size.Meanwhile being made of high temperature superconducting materia, and zeroth order resonant element uses right-hand man's circuit, into
And high-temperature superconductor notch filter quality factor is high.In addition, zeroth order resonant element uses right-hand man's circuit, it is possible to prevente effectively from resistance
The interference at passband is generated with harmonic wave and reaches the trap effect for only filtering out assigned frequency noise jamming.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (7)
1. a kind of high-temperature superconductor notch filter based on right-hand man's zeroth order resonance circuit characterized by comprising bilateral symmetry
The first zeroth order resonant element being arranged and the 4th zeroth order resonant element, the second zeroth order resonant element being symmetrical set and third
Zeroth order resonant element, the first transmission line being symmetrical set and third transmission line, second transmission line, the first cochin structure and
The signal input part and signal output end being symmetrical set, wherein the first transmission line is humorous with first zeroth order respectively
The second end of vibration unit is connected with the first end of the second zeroth order resonant element, and the second transmission line is respectively with described second
The second end of zeroth order resonant element is connected with the second end of the third zeroth order resonant element, the third transmission line respectively with institute
The first end for stating third zeroth order resonant element is connected with the second end of the 4th zeroth order resonant element, the signal input part with
The first end of the first zeroth order resonant element connects, the first end of the signal output end and the 4th zeroth order resonant element
Connection, the first cochin structure setting is between the first transmission line and the third transmission line so that the signal inputs
End and signal output end generating source load coupling；
The first zeroth order resonant element, the second zeroth order resonant element, third zeroth order resonant element and the 4th zeroth order resonant element
It is respectively used to generate a single mode trap；
The first zeroth order resonant element and the second zeroth order resonant element intercouple in the first transmission line, and described the
Two zeroth order resonant elements and the third zeroth order resonant element intercouple in the second transmission line, the third zeroth order resonance
Unit and the 4th zeroth order resonant element intercouple in the third transmission line；
The first zeroth order resonant element, the second zeroth order resonant element, the third zeroth order resonant element and the described 4th
The shape of zeroth order resonant element is identical, is zeroth order resonant element.
2. the high-temperature superconductor notch filter according to claim 1 based on right-hand man's zeroth order resonance circuit, feature
It is, the first transmission line and the third transmission line are the microstrip line bent, and the second transmission line is the micro-strip of bending
Line.
3. the high-temperature superconductor notch filter according to claim 2 based on right-hand man's zeroth order resonance circuit, feature
It is, the first transmission line and the third transmission line are L-shaped, and the first transmission line includes be electrically connected to each other
One coupling part and the second coupling part, the third transmission line include the third coupling part and the 4th coupling part being electrically connected to each other；
Second coupling part is parallel to each other with the 4th coupling part, and the first cochin structure setting is in second coupling
The one end in portion and the 4th coupling part；
The second transmission line includes the 5th coupling part, for by the 5th coupling part and the second zeroth order resonant element
The first connecting portion of second end electrical connection and for by the second of the 5th coupling part and the third zeroth order resonant element
Hold the second connecting portion of electrical connection, wherein the shape of the 5th coupling part is U-shaped.
4. the high-temperature superconductor notch filter according to claim 3 based on right-hand man's zeroth order resonance circuit, feature
Be, the first cochin structure includes 9 strip lines that are arranged in parallel and intercoupling, two-by-two between strip line between
Gap is 0.05mm.
5. the high-temperature superconductor notch filter according to claim 4 based on right-hand man's zeroth order resonance circuit, feature
It is, the first zeroth order resonant element, the second zeroth order resonant element, third zeroth order resonant element and the 4th zeroth order resonant element
Shape it is all the same, and include: a uniform impedance resonator and the left and right that intercouples with the uniform impedance resonator
Flashlight road and uniform impedance resonator both ends are set and the first side feeder line coupled with right-hand man's circuit and
Two side feeder lines；
Right-hand man's circuit includes the feed coupled end being electrically connected to each other and the second cochin structure and couples with the feed
End electrical connection and the inductor wire and patch that are successively electrically connected to each other, the inductor wire from the feed coupled end junction around
The periphery one week of the patch and be electrically connected with the patch.
6. the high-temperature superconductor notch filter according to claim 5 based on right-hand man's zeroth order resonance circuit, feature
It is, the second cochin structure includes 4 strip lines to intercouple, wherein one end of 4 strip lines and the feedback
It is electrically coupled end electrical connection.
7. the high-temperature superconductor notch filter according to claim 1 to 6 based on right-hand man's zeroth order resonance circuit
Device, which is characterized in that the high-temperature superconductor notch filter is arranged on the upper surface of a high-temperature superconductor medium substrate, and described
Ground metal layer is provided on the lower surface of high-temperature superconductor medium substrate.
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| CN201610716551.7A CN106129554B (en) | 2016-08-24 | 2016-08-24 | A kind of high-temperature superconductor notch filter based on right-hand man's zeroth order circuit |
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| CN201610716551.7A CN106129554B (en) | 2016-08-24 | 2016-08-24 | A kind of high-temperature superconductor notch filter based on right-hand man's zeroth order circuit |
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Citations (2)
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|---|---|---|---|---|
| CN103367844A (en) * | 2013-06-03 | 2013-10-23 | 华东交通大学 | Multi-branch loading-based three passband high-temperature superconductive filter |
| CN103367843A (en) * | 2013-06-03 | 2013-10-23 | 华东交通大学 | Four-model resonator-based compact dual-passband high-temperature superconductive filter |
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2016
- 2016-08-24 CN CN201610716551.7A patent/CN106129554B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367844A (en) * | 2013-06-03 | 2013-10-23 | 华东交通大学 | Multi-branch loading-based three passband high-temperature superconductive filter |
| CN103367843A (en) * | 2013-06-03 | 2013-10-23 | 华东交通大学 | Four-model resonator-based compact dual-passband high-temperature superconductive filter |
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Effective date of registration: 20190820 Address after: 710048 Xianning West Road, Shaanxi, China, No. 28, No. Patentee after: Xi'an Jiaotong University Address before: 330013 Changbei Economic and Technological Development Zone, Nanchang City, Jiangxi Province, 808 Shuanggang Moving East Street Patentee before: East-China Communication Univ |