CN205752462U - W-waveband high-temperature superconductor flat filter - Google Patents
W-waveband high-temperature superconductor flat filter Download PDFInfo
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- CN205752462U CN205752462U CN201620437273.7U CN201620437273U CN205752462U CN 205752462 U CN205752462 U CN 205752462U CN 201620437273 U CN201620437273 U CN 201620437273U CN 205752462 U CN205752462 U CN 205752462U
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Abstract
W-waveband high-temperature superconductor flat filter of the present utility model, the high-temperature superconducting thin film including substrate, being formed on substrate and the circuit pattern formed by high-temperature superconducting thin film, it is characterized in that: described circuit pattern includes the filter main body that passband is in W-waveband and the circuit ground being formed at around filter main body, wherein circuit ground and filter main body structure form groove by laser ablation, form coplanar waveguide structure with making filter main body and circuit.W-waveband high temperature superconduction wave filter of the present utility model, effectively prevent the generation of the higher mode of the millimeter wave frequency band of design on high-k high-temperature superconductor medium substrate, resonator uses 1/4 waveguide wavelength strip resonator, can realize preferable coupling amount and resonance characteristic in W-waveband.Structure of the present utility model not only has superior performance in suppression higher mode, also saves high-temperature superconducting thin film material, also weakens the manufacturing procedure of high temperature superconduction wave filter simultaneously, reduce processing cost.
Description
Technical field
This utility model belongs to microwave and millimeter wave passive device technical field, refers more particularly to a kind of W-waveband high-temperature superconductor plane
Wave filter.
Background technology
In recent years, along with the fast development of wireless communication technology, the frequency spectrum resource of frequency microwave frequency range is more and more rare, and this makes
Obtain developer and sight has been gathered in higher frequency section millimeter wave band.Due to the impetus of the market demand, millimeter wave skill
Art has obtained high concern and has developed rapidly, especially in terms of radar, navigational guidance and short distance high-speed communication, millimeter wave
Advantage is the most prominent.Compared with radio frequency microwave system, millimetre wavelength is shorter, and frequency spectrum resource is abundanter, using the teaching of the invention it is possible to provide more
Good precision and resolution, and millimeter-wave systems long-pending less, weight is lighter；Compared with infrared or visible ray, millimeter wave then has
There is the higher ability penetrating cloud, rain, affected by weather less.The frequency of W-waveband is 80GHZ-100GHZ, is aspiration
Receive the window wave band that decay is relatively small, be one section of frequency spectrum important in millimeter wave band, be study hotspot in recent years.
W-waveband wave filter is parts important in millimetre-wave circuit system, and especially it is as the front end in wireless system
During circuit block, its performance quality directly decides the quality of whole system service behaviour.Conventional W-waveband wave filter is main
Employing waveguide filter is designed, but, waveguide filter also exists processing difficulties, it is difficult to carry out integrated with planar circuit
Shortcoming, and planarize and miniaturization be microwave and millimeter wave Circuits System development inexorable trend, and for common microwave put down
Face circuit, such as microstrip line and strip line, because being limited by itself intrinsic Q-value, cause its insertion loss relatively big, band
Interior frequency response characteristic is bad, it is difficult to realizing the design of the high performance wave filter of such high band, therefore, research worker turns
And the wave filter of the substrate integrated wave guide structure of the high q-factor that begins one's study, although such wave filter can realize miniaturization, planarization,
It is easy to integrated, but owing to being subject to processing precision and the restriction of the maximum Q-value of circuit structure itself, substrate integral wave guide filter depends on
So cannot realize the design of W-waveband narrow band filter.
Utilizing high temperature superconducting materia design W-waveband flat filter is to realize high-performance, low section, miniaturization, high integration
The research direction of a great prospect of W-waveband wave filter, but owing to the common substrate of growth high-temperature superconducting thin film is relative
Dielectric constant is relatively big (such as: the dielectric constant of magnesium oxide substrate is about 9.8, and the relative dielectric constant of lanthanum aluminate substrate is about 24),
This can make the high-temperature superconductor transmission network of common planar structure easily occur that higher mode can not be designed at millimeter wave frequency band
Meeting the millimeter wave high-temperature superconductor flat filter of performance requirement, the design of the most common high temperature superconduction wave filter also focuses mostly on
Below Ka wave band, so the high-temperature superconductor flat filter of design W-waveband had both had bright prospects and had also had great challenge.
Utility model content
The purpose of this utility model is that existing W-waveband wave filter volume is big, insertion loss is big, squareness factor is poor in order to solve
Shortcoming, a kind of W-waveband high-temperature superconductor flat filter is provided.
The technical solution of the utility model is achieved in that a kind of W-waveband high-temperature superconductor flat filter, including substrate,
The high-temperature superconducting thin film being formed on substrate and the circuit pattern formed by high-temperature superconducting thin film, it is characterised in that: described circuit
Pattern includes the filter main body that passband is in W-waveband and the circuit ground being formed at around filter main body, wherein circuit ground and
Filter main body structure forms groove by laser ablation, forms coplanar waveguide structure with making filter main body and circuit.
Preferably, the width of described groove is uniform.
It is further preferred that the entirety of described groove or part width are not more than 3 times of the live width of filter main body circuit.
Preferably, described filter main body includes input and output feeder line and multiple resonant element, and wherein input and output feeder line is harmonious
The unit that shakes is attached by the way of INDIRECT COUPLING.
Preferably, described filter main body includes input and output feeder line and multiple resonant element, and wherein input and output feeder line is harmonious
The unit that shakes is attached by direct-coupled mode.
Preferably, 1/4 wavelength of a length of mid frequency of the resonant element used in described filter main body, its resonance list
Unit is linear type or bending type.
Preferably, described substrate be dielectric constant be the magnesium oxide substrate of 9.8.
Preferably, the spacing between regulation filter resonance unit is to regulate the bandwidth of operation of wave filter.
Preferably, the spacing between regulation filter main body and circuit ground is to change wave filter coupled outside, and then realizes externally
The regulation of portion's Q-value.
Compared with prior art, the beneficial effects of the utility model are:
1). this utility model uses coplanar wave guide feedback structure to realize W-waveband high temperature superconduction wave filter feed, is prevented effectively from
The generation of the higher mode of the millimeter wave frequency band of design on the high-k high-temperature superconductor medium substrate, and then have devised suitable
High-temperature superconductor flat filter for W-waveband.
2). resonator of the present utility model uses half waveguide wavelength strip resonator, can realize preferable coupling amount in W-waveband
With resonance characteristic.
3). this utility model uses single-side high temperature superconducting thin film can realize preferable filtering characteristic in W-waveband.Relatively conventional
Double-faced high-temperature superconducting wave filter, structure of the present utility model not only has superior performance in suppression higher mode, also saves height
Temp. superconductive thin-film material, also weakens the manufacturing procedure of high temperature superconduction wave filter simultaneously, reduces processing cost.
4). the high-temperature superconductor flat filter of this utility model design is applicable not only to the design of W-waveband wave filter, owing to it is excellent
The ability of suppression higher mode more, this structure is also applied for the wave filter design of other microwave and millimeter wave frequency ranges less than this frequency range,
Realize as the high-temperature superconductor flat filter of Ku/K/Ka/U/V wave band may be used without this structure.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the W-waveband high-temperature superconductor flat filter of this utility model preferred embodiment；
Fig. 2 is the frequency response curve of the W-waveband high-temperature superconductor flat filter of this utility model preferred embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole enforcement
Example.Based on the embodiment in this utility model, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
It is illustrated in figure 1 the structural representation of the W-waveband high-temperature superconductor flat filter of this utility model preferred embodiment, one
Kind of W-waveband high-temperature superconductor flat filter, the high-temperature superconducting thin film including substrate 1, being formed on substrate 1 and being surpassed by high temperature
Leading the circuit pattern that thin film is formed, described circuit pattern includes that passband is in the filter main body of W-waveband and is formed at wave filter
Circuit ground 2 around main body, wherein circuit ground and filter main body structure form groove by laser ablation, make wave filter master
Body and circuit ground composition coplanar waveguide structure, further, the width of described groove is uniform.
Preferably, the entirety of described groove or part width are not more than 3 times of live width of filter main body circuit.
Preferably, described filter main body includes input and output feeder line 4 and multiple resonant element 3, wherein input and output feeder line 4
It is attached by INDIRECT COUPLING or direct-coupled mode with resonant element 3.
As a preferred specific embodiment, state filter main body and include input and output feeder line 4 and 5 resonant elements 3, institute
Stating 1/4 wavelength of a length of mid frequency of resonant element 3 used in filter main body, described substrate 1 is dielectric constant
Being the magnesium oxide substrate of 9.8, surface superconducting thin film uses YBCO film；The medium substrate of long high-temperature superconducting thin film uses thickness
For 0.22mm, it is illustrated in figure 2 the frequency response curve of the present embodiment wave filter, the frequency of abscissa representation signal, unit
GHz, vertical coordinate is the response amplitude of signal, and unit is dB, and the W-waveband high temperature superconduction wave filter of the present embodiment is operated in
92.5GHz-95.5GHz, center operating frequency is 94GHz, and pass band width is 3GHz, and in band, return loss S11 is less than-27dB,
In-band insertion loss S21 is less than 2.9dB, it follows that for conventional W-waveband wave filter, the present embodiment designs
Wave filter there is the feature of low insertion loss, effectively prevent simultaneously and design on high-k high-temperature superconductor medium substrate
The generation of higher mode of millimeter wave frequency band.
A kind of method regulating wave filter bandwidth of operation described in the utility model, by the spacing between regulation filter resonance unit
To regulate the bandwidth of operation of wave filter.
The control method of a kind of External Q, by regulating the spacing between above-mentioned filter main body and circuit ground to change wave filter
Coupled outside, and then realize the regulation to External Q.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in this practicality of reader understanding newly
The principle of type, it should be understood that protection domain of the present utility model is not limited to such special statement and embodiment.Ability
The those of ordinary skill in territory can be made various real without departing from this utility model according to these technology enlightenment disclosed in this utility model
Other various concrete deformation and combination of matter, these deformation and combination are still in protection domain of the present utility model.
Claims (7)
1.W band high-temperature superconducting flat filter, the high-temperature superconducting thin film including substrate, being formed on substrate and being surpassed by high temperature
Lead thin film formed circuit pattern, it is characterised in that: described circuit pattern include passband be in W-waveband filter main body and
The circuit ground being formed at around filter main body, wherein circuit ground and filter main body structure form groove by laser ablation,
Form coplanar waveguide structure with making filter main body and circuit.
2. W-waveband high-temperature superconductor flat filter as claimed in claim 1, it is characterised in that: the width of described groove is
Uniformly.
3. W-waveband high-temperature superconductor flat filter as claimed in claim 1, it is characterised in that: the entirety of described groove or
Part width is not more than 3 times of the live width of filter main body circuit.
4. the W-waveband high-temperature superconductor flat filter as described in any one claim of claims 1 to 3, its feature exists
In, described filter main body includes input and output feeder line and multiple resonant element, and wherein input and output feeder line and resonant element lead to
The mode crossing INDIRECT COUPLING is attached.
5. W-waveband high-temperature superconductor flat filter as claimed in claim 4, it is characterised in that: described filter main body bag
Including input and output feeder line and multiple resonant element, wherein input and output feeder line and resonant element are carried out by direct-coupled mode
Connect.
6. W-waveband high-temperature superconductor flat filter as claimed in claim 5, it is characterised in that: in described filter main body
1/4 wavelength of a length of mid frequency of the resonant element used, its resonant element is linear type or bending type.
7. W-waveband high-temperature superconductor flat filter as claimed in claim 6, it is characterised in that: described substrate is that dielectric is normal
Number is the magnesium oxide substrate of 9.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437273.7U CN205752462U (en) | 2016-05-13 | 2016-05-13 | W-waveband high-temperature superconductor flat filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620437273.7U CN205752462U (en) | 2016-05-13 | 2016-05-13 | W-waveband high-temperature superconductor flat filter |
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| CN205752462U true CN205752462U (en) | 2016-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932375A (en) * | 2016-05-13 | 2016-09-07 | 电子科技大学 | W-band high-temperature superconducting plane filter and bandwidth and external Q value adjustment method therefor |
| CN108532528A (en) * | 2018-04-11 | 2018-09-14 | 西安电子科技大学 | Road surface microwave ice removing method is covered based on high dielectric constant material |
-
2016
- 2016-05-13 CN CN201620437273.7U patent/CN205752462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932375A (en) * | 2016-05-13 | 2016-09-07 | 电子科技大学 | W-band high-temperature superconducting plane filter and bandwidth and external Q value adjustment method therefor |
| CN108532528A (en) * | 2018-04-11 | 2018-09-14 | 西安电子科技大学 | Road surface microwave ice removing method is covered based on high dielectric constant material |
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