CN209344285U - A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode - Google Patents
A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode Download PDFInfo
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- CN209344285U CN209344285U CN201920131363.7U CN201920131363U CN209344285U CN 209344285 U CN209344285 U CN 209344285U CN 201920131363 U CN201920131363 U CN 201920131363U CN 209344285 U CN209344285 U CN 209344285U
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- bicyclic
- double
- minor matters
- resonance device
- wide band
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Abstract
The utility model discloses a kind of bicyclic ultra wide band bandpass filters of high-temperature superconductor multimode, including double-ring resonance device, the double-ring resonance device is a rectangle frame, a pair of first minor matters are loaded on the vertically symmetrical axis of the double-ring resonance device, a pair of second minor matters are loaded in the horizontal symmetry axis of the double-ring resonance device, it is loaded with third minor matters at the symmetrical centre of the double-ring resonance device, is connected with feeder line by three parallel coupled lines at the center of double-ring resonance device two sides.The utility model has the advantages that the small reflection of promotion channel capacity, Insertion Loss is excellent, selectivity is high, upper stopband is wide.
Description
Technical field
The utility model relates to wave filter technology fields, it particularly relates to a kind of bicyclic ultra wide band of high-temperature superconductor multimode
Bandpass filter.
Background technique
Ultra-wide degree band wireless communication technique is mainly used in the communication of short distance high-speed high capacity, and ultra-wide degree band filter is
Ultra-wide degree is with the important component in communication system.Present domestic and foreign scholars have devised many ultra-wide degree band filters, these
Filter Principle different structure multiplicity, wherein the filter construction simple dimensions very little designed with multimode resonator, in recent years
To be favored very much.But the selectivity of existing filter is low, and the big reflecting effect of Insertion Loss is bad.
Utility model content
To solve problems of the prior art, the purpose of the utility model is to provide a kind of high-temperature superconductor multimode is bicyclic
Ultra wide band bandpass filter has the advantages that the small reflection of promotion channel capacity, Insertion Loss is excellent, selectivity is high, upper stopband is wide.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: bicyclic ultra wide band of high-temperature superconductor multimode
Bandpass filter, including double-ring resonance device, the double-ring resonance device be a rectangle frame, the double-ring resonance device it is vertically symmetrical
It is loaded with a pair of first minor matters on axis, a pair of second minor matters are loaded in the horizontal symmetry axis of the double-ring resonance device, it is described double
It is loaded with third minor matters at the symmetrical centre of ring resonator, passes through three parallel coupled lines at the center of double-ring resonance device two sides
It is connected with feeder line.
Preferably, which is processed into using the MgO substrate of the two-sided YBCO high-temperature superconducting thin film of 0.5mm thickness.
Preferably, first minor matters are stepped impedance line.
Preferably, second minor matters are open stub.
Preferably, the length of the open stub is 0.02mm~1.62mm.
Preferably, the length of the third minor matters is 0.8mm~2.2mm.
The beneficial effects of the utility model are:
New ultra-wide degree band filter is devised based on double-ring resonance device, is loaded on the vertically symmetrical axis of double-ring resonance device
A pair of of stepped impedance line is to introduce pair of transmission zeros, the selectivity of boostfiltering device.One is loaded in horizontal symmetry axis
Open-circuit stub adjusts and is allowed to be uniformly distributed with interior parity mode mode to reach best reflection in band.Again in double-ring resonance
Device center loaded cross third minor matters, by previous step introduce front end it is nearest it is spuious be moved to transmission zero location, with
Just upper stopband is extended.Three parallel coupled lines provide feed, prop up whole bandwidth.It is compared with conventional annular ultra-wide degree band filter,
The utility model proposes structure have good selectivity, wide upper stopband, wide passband, have promoted channel capacity, Insertion Loss
The advantage that small reflection is excellent, selectivity is high, upper stopband is wide.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode of the utility model embodiment
Figure；
Fig. 2 is the effect diagram that the utility model embodiment loads different open circuit minor matters；
Fig. 3 is the variation characteristic figure that the utility model embodiment resonator characteristics change with the length of the second minor matters；
Fig. 4 is the variation characteristic figure that the utility model embodiment resonator characteristics change with the length of third minor matters；
Fig. 5 is the utility model embodiment filter the simulation results figure.
Description of symbols:
1, double-ring resonance device；2, the first minor matters；3, the second minor matters；4, third minor matters；5, three parallel coupled line；6, feeder line.
Specific embodiment
The embodiments of the present invention are described in detail with reference to the accompanying drawing.
Embodiment 1:
As shown in Figure 1, a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode, including double-ring resonance device 1, it is described double
Ring resonator 1 is a rectangle frame, and a pair of first minor matters 2 are loaded on the vertically symmetrical axis of the double-ring resonance device 1, described double
It is loaded with a pair of second minor matters 3 in the horizontal symmetry axis of ring resonator 1, is loaded at the symmetrical centre of the double-ring resonance device 1
Third minor matters 4 are connected with feeder line 6 by three parallel coupled lines 5 at the center of 1 two sides of double-ring resonance device.
First minor matters 2 are stepped impedance line；Second minor matters 3 are open stub, the open stub
Length is 0.02mm~1.62mm；The length of the third minor matters 4 is 0.8mm~2.2mm.
New ultra-wide degree band filter is devised based on double-ring resonance device 1, is added on the vertically symmetrical axis of double-ring resonance device 1
A pair of of stepped impedance line is carried to introduce pair of transmission zeros, the selectivity of boostfiltering device.Then add in horizontal symmetry axis
A pair of of open stub has been carried, has adjusted and is allowed to be uniformly distributed with interior parity mode mode to reach best reflection in band.Bicyclic
1 center loaded cross-shaped structure of resonator, by previous step introduce front end it is nearest it is spuious be moved to transmission zero location, with
Just upper stopband is extended.Three parallel coupled lines 5 provide feed, prop up whole bandwidth.It is compared with conventional annular ultra-wide band filter, this
The structure that utility model proposes has strong selectivity, wide upper stopband, wide pass band width.
As shown in Fig. 2, double-ring resonance device 1 is a four mould resonators, therefore in weak coupling there are four interior, band
Mode (fo1, fe2, fo2, fe3) not only introduces pair of transmission zeros after loading the first minor matters 2, and also formation perturbation is by one
Higher mode fe4 is pressed into passband, forms five mould resonators.In order to be formed simultaneously using the local oscillator and two frequencys multiplication of stepped impedance line
Pair of transmission zeros is arranged big impedance ratio, this is made to be symmetrically distributed in passband or so to transmission zero, with the choosing of boostfiltering device
Selecting property.
Due to the symmetrical configuration of entire resonator, when analyzing odd mould resonance, the plane of symmetry is equivalent to ground plane, even in analysis
When mould resonance, the plane of symmetry is equivalent to open circuit surface；Therefore the first minor matters 2 introducing pair of transmission zeros (ftz1, ftz2) is being loaded simultaneously
After determining odd mould position by the second minor matters 3 of load, then third minor matters 4 are adjusted to adjust even mould position.
As shown in figure 3, the length (L5) of the open stub changes to 1.62mm from 0.02mm, odd mould resonance frequency is obtained
Fine tuning, fe3 idol mould frequency is changed significantly, and takes optimal value 0.8mm, and the frequency of higher mode fe4 is close at high-frequency cut-off, bicyclic humorous
Vibration 1 center of device introduces third minor matters 4, and higher mode is adjusted in the front end transmission zero generated to the first minor matters 2
Fe4 is inhibited to widen stopband.
As shown in figure 4, the length (L7) with third minor matters 4 changes to 2.2mm from 0.8mm, fe4 is quickly moved down from high frequency is past
It is dynamic, it when L7 takes 1.2mm, is overlapped with transmission zero ftz2, achievees the effect that inhibit fe4.The length of three parallel coupled lines 5 is super
The a quarter of broadband filter centre frequency corresponding wavelength degree, so far the initial value of entire filter determines substantially.Even mould is humorous
Vibration frequency can be controlled by the first minor matters 2, the second minor matters 3 and third minor matters 4, and odd mould resonance frequency can pass through the second minor matters
3 are adjusted.Transmission zero can be controlled by the electrical length and impedance ratio of the first minor matters 2.
Fig. 5 is the simulation results of filter, is fed due to using the close coupling of stepped impedance parallel coupled line, passband
If interior transmission pole becomes seven from five under original coupling condition.Test result is kissed with simulation result substantially on the whole
It closes, 3-dB bandwidth covers 2.56GHz~1.15GHz, and relative bandwidth 125.3% is only in centre frequency insertion loss
0.10dB is 0.42dB with interior maximum Insertion Loss.It is greater than 15.18dB with interior return loss, low frequency end transmission zero is located at 1.91GHz
Place, low frequency end Out-of-band rejection are greater than 32.23dB, and front end transmission zero is located at 1.91GHz, inhibit the upper stopband for being greater than 20dB
Extend to about 16GHz.In addition, with interior group delay probably in 0.16-1.06ns.The utility model proposes ultra-wide degree band filtering
Device has good Insertion Loss band internal reflection and good selectivity.
Embodiment 2:
The filter is processed into using the MgO substrate of the two-sided YBCO high-temperature superconducting thin film of 0.5mm thickness, opposite dielectric
Constant is 9.8, final size 21.95mm*16.46mm；Wherein used on the superconducting thin film of one side high precision laser etching for
Circuit, as ground, ultra-wide degree band filter is assembled to inside shielding box another side.
Remaining structure and working principle of embodiment 2 is the same as embodiment 1.
Specific embodiment of the present utility model above described embodiment only expresses, be described as it is specific and detailed, but
It should not be interpreted as limiting the scope of the present invention.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (6)
1. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode, which is characterized in that described bicyclic including double-ring resonance device
Resonator is a rectangle frame, and a pair of first minor matters are loaded on the vertically symmetrical axis of the double-ring resonance device, described bicyclic humorous
It is loaded with a pair of second minor matters in the horizontal symmetry axis of vibration device, is loaded with third branch at the symmetrical centre of the double-ring resonance device
It saves, is connected with feeder line by three parallel coupled lines at the center of double-ring resonance device two sides.
2. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode according to claim 1, which is characterized in that the filter
Wave device is processed into using the MgO substrate of the two-sided YBCO high-temperature superconducting thin film of 0.5mm thickness.
3. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode according to claim 1, which is characterized in that described
First minor matters are stepped impedance line.
4. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode according to claim 1, which is characterized in that described
Second minor matters are open stub.
5. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode according to claim 4, which is characterized in that described
The length of open stub is 0.02mm~1.62mm.
6. a kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode according to claim 1, which is characterized in that described
The length of third minor matters is 0.8mm~2.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920131363.7U CN209344285U (en) | 2019-01-25 | 2019-01-25 | A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920131363.7U CN209344285U (en) | 2019-01-25 | 2019-01-25 | A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode |
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| CN209344285U true CN209344285U (en) | 2019-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994808A (en) * | 2019-01-25 | 2019-07-09 | 成都顺为超导科技股份有限公司 | A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994808A (en) * | 2019-01-25 | 2019-07-09 | 成都顺为超导科技股份有限公司 | A kind of bicyclic ultra wide band bandpass filter of high-temperature superconductor multimode |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 Termination date: 20210125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |