CN104409808B - Comb filter based on multimode resonator - Google Patents
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- CN104409808B CN104409808B CN201410691241.5A CN201410691241A CN104409808B CN 104409808 B CN104409808 B CN 104409808B CN 201410691241 A CN201410691241 A CN 201410691241A CN 104409808 B CN104409808 B CN 104409808B
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- 238000013461 design Methods 0.000 abstract description 9
- 238000004891 communication Methods 0.000 abstract description 7
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- 230000037431 insertion Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
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Abstract
The invention discloses a kind of comb filter based on multimode resonator, mainly solve the problems, such as that comb filter size is big, performance is not good.Which includes micro-strip medium substrate (1), metal ground plate (2), resonator (3), input and output feeder line (4).The resonator (3) is made up of two identicals, the five mould resonator being staggeredly placed, each five mould resonator by short-circuit minor matters (31), open circuit minor matters (32), U-shaped microstrip line (33), convex ring (34) and L-shaped open circuit minor matters (35,36) composition.The symmetrical centre of convex ring (34) is overlapped with the symmetrical centre of U-shaped microstrip line, and its top is connected with the bottom of U-shaped microstrip line；L-shaped open circuit minor matters are also connected on the bottom of U-shaped microstrip line.Input and output feeder line (4) is made up of an alignment interdigitation coupling feed.The present invention can reduce the size of comb filter, reduce design complexities, improve passband selectivity, can be used for wireless communication system.
Description
Technical field
The invention belongs to technical field of electronic devices, more particularly to a kind of design of micro-strip comb filter, can be used for
Wireless communication system radio-frequency front-end.
Background technology
Microwave filter is the indispensable important component part such as communication system, radar system, measuring system, therefore,
Microwave filter is always the emphasis and focus of Research of wireless communication systems.Modern wireless communication systems require radio-frequency devices work
It is in multiple detached frequency ranges to meet with a multimode terminal realizing the demand of different business, multiple by a beam transmission
The frequency signal of discontinuous channel.This is accomplished by using comb filter suppressing spuious noise signal.Past, for reality
Existing multiband communication, each frequency range are required for independent wave filter, and this causes whole system volume and power consumption larger, cost compared with
It is high.Volume, cost and the power consumption of system if the wave filter of radio-frequency front-end is designed to multiband form, can be substantially reduced, is increased
Strong its reliability, promotes communication system to develop to miniaturization, high integration.
In order to meet this demand, many research work are devoted to the design of comb filter, the Cheng of in May, 2010,
Et al. C.-M. delivered on IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS periodicals and adopted defect
Four pass filters that ground structure is realized, but defect ground structure can make wave filter that the complete of partitioned signal is grounded when being packaged
Property is affected；The Hung-Wei of in April, 2011, W.and Y.Ru-Yuan are in IEEE MICROWAVE AND WIRELESS
Four pass filters realized using asymmetrical step electric impedance resonator have been delivered on COMPONENTS LETTERS periodicals, but
It is that more resonator has been used so that the size of circuit becomes larger due to its design；The Chi-Feng of in July, 2012, Chen existed
Delivered on IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS periodicals rank has been loaded based on three mould minor matters
Five frequency wave filter of terraced electric impedance resonator, but the filter insertion loss is excessive, affects which to apply；In September, 2013 J.Xu etc.
People has been delivered using open circuit on IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES periodicals
Multiple comb filters of the step electric impedance resonator design of minor matters loading, but the selectivity of filter passband can not allow people
It is satisfied.
The content of the invention
Present invention aim at for the deficiency of above-mentioned prior art, proposing a kind of many passband filters based on multimode resonator
Ripple device, to reduce the volume of wave filter, improves the performance of wave filter.
For achieving the above object, the present invention provides the following two kinds technical scheme：
Technical scheme one：
A kind of comb filter based on multimode resonator, including micro-strip medium substrate 1, metal ground plate 2, resonator
3, input and output feeder line 4, metal ground plate are provided with ground hole 5, it is characterised in that：
The input and output feeder line 4, which is made up of an alignment interdigitation coupling feed, and each feed line includes two interdigital branches
41,42 and one section of 50 ohm microstrip 43 of section；Interdigital minor matters 41,42 are connected in parallel at same one end of 50 ohm microstrips 43；
The resonator 3, which is made up of two identicals, the four mould resonator being staggeredly placed, and each four mould resonator is by short
Road minor matters 31, open circuit minor matters 32, U-shaped microstrip line 33 and a convex ring 34 are constituted；Short-circuit minor matters 31 are located on the inside of convex type ring 34
U-shaped microstrip line symmetrical centre, open a way minor matters 32 be located at convex type ring 34 on the outside of U-shaped microstrip line symmetrical centre；U-shaped microstrip line 33
Upper end A it is parallel be placed in interdigital minor matters 41, between 42, lower end B is parallel to be placed on the inside of feeder line 4；The symmetrical centre and U of convex ring 34
The symmetrical centre of shaped microstrip line 33 overlaps, and the top of convex ring 34 is connected with the bottom C of U-shaped microstrip line.
Technical scheme two：
A kind of comb filter based on multimode resonator, including micro-strip medium substrate 1, metal ground plate 2, resonator
3, input and output feeder line 4, metal ground plate are provided with ground hole 5, it is characterised in that：
The input and output feeder line 4, which is made up of an alignment interdigitation coupling feed, and each feed line includes two interdigital branches
41,42 and one section of 50 ohm microstrip 43 of section；Interdigital minor matters 41,42 are connected in parallel at same one end of 50 ohm microstrips 43；
The resonator 3, which is made up of two identicals, the five mould resonator being staggeredly placed, and each five mould resonator is by short
Road minor matters 31, open circuit minor matters 32,33, convex ring 34 of U-shaped microstrip line and two L-shaped open circuit minor matters 35,36 are constituted；Short-circuit branch
Section 31 is located at the U-shaped microstrip line symmetrical centre on the inside of convex type ring 34, and minor matters 32 of opening a way are located at the U-shaped microstrip line on the outside of convex type ring 34
Symmetrical centre；The upper end A of U-shaped microstrip line 33 is parallel to be placed in interdigital minor matters 41, and between 42, lower end B is parallel to be placed on the inside of feeder line 4；
The symmetrical centre of convex ring 34 is overlapped with the symmetrical centre of U-shaped microstrip line 33, the top of convex ring 34 and the bottom of U-shaped microstrip line
C is connected；Two L-shaped open circuit minor matters 35,36 are symmetrically connected on the bottom C of U-shaped microstrip line 33.
The present invention has advantages below：
1. the present invention is due to being designed using multimode resonator so that each wave filter is only with two identical resonators
Many passband responses are can be achieved with, the overall dimensions of wave filter are reduced, while also simplify the complexity of design.
2. multimode resonator of the present invention as a result of minor matters loading form so that the frequency of each mode of resonance can
With independent control, motility and the degree of freedom of design is increased, and easily realizes the transformation from four moulds to five moulds.
3. the present invention due to carrying out the input and output of energy using quasi- interdigitation feeder line so that in the both sides of each passband
Transmission zero can be formed, band external characteristics is improved on the basis of additional cost is not increased so that each passband has preferably
Selectivity.
4. the present invention will not affect earth plate when the encapsulation of device is filtered as a result of complete metal ground plate
The integrity of signal.
Description of the drawings
Fig. 1 is first embodiment of the present invention structure chart；
Side views of the Fig. 2 for Fig. 1；
Fig. 3 is second embodiment of the present invention structure chart；
Side views of the Fig. 4 for Fig. 3；
Fig. 5 is transmission characteristic | the S21 | to first embodiment of the invention and return loss | S11 | emulation and test curve
Figure；
Fig. 6 is transmission characteristic | the S21 | to second embodiment of the invention and return loss | S11 | emulation and test curve
Figure.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the invention are elaborated：
First embodiment：Four pass filters of the design size for 27.5mm × 23mm.
See figures.1.and.2, the four passband band filters of the present invention mainly by micro-strip medium substrate 1, metal ground plate 2,
Resonator 3, input and output feeder line 4, ground hole 5 are constituted.Wherein：
Micro-strip medium substrate 1 adopts dielectric constant for 2.2, double face copper of the thickness for 1.0mm, below double face copper
For metal ground plate 2, it is four mould resonators 3, input and output feeder line 4 and ground hole 5 above double face copper.Wherein：
The input and output feeder line 4 is made up of an alignment interdigitation coupling feed, and each feed line includes 2 interdigital minor matters
41,42 and one section of 50 ohm microstrip 43；Interdigital minor matters 41,42 are connected in parallel at same one end of 50 ohm microstrips 43；This pair
A length of 13mm of interdigital minor matters 41,42, a width of 0.76mm, the two interdigital minor matters 41, the distance between 42 are 1.48mm；50 Europe
A length of 6mm of nurse microstrip line 43, a width of 3mm.
The resonator 3, which is made up of two identicals, the four mould resonator being staggeredly placed.Each four mould resonator is by short
Road minor matters 31, minor matters 32 of opening a way, U-shaped microstrip line 33 and a convex ring 34 are constituted；Short-circuit minor matters 31 are located on the inside of convex type ring 34
U-shaped microstrip line symmetrical centre, a length of 4.1mm of short-circuit minor matters 31, a width of 0.5mm；Open circuit minor matters 32 are located at outside convex type ring 34
The U-shaped microstrip line symmetrical centre of side, a length of 7mm, a width of 1.5mm of minor matters 32 of opening a way；The upper end A of U-shaped microstrip line 33 is parallel to put
In interdigital minor matters 41, between 42；The symmetrical centre of convex ring 34 is overlapped with the symmetrical centre of U-shaped microstrip line 33, convex ring 34
Top is connected with the bottom C of U-shaped microstrip line 33.
The U-shaped microstrip line 33, its upper end A parallel to feeder line 4, and a length of 13mm, a width of 1.0mm, its lower end B parallel to
Feeder line 4, and a length of 13mm, a width of 1.0mm, its bottom C are perpendicular to feeder line 4, and a length of 16.5mm, a width of 1.0mm；The U-shaped is micro-
The total length of band wire 33 is 42.5mm, and the distance of its upper end A and interdigital minor matters 41,42 is 0.24mm, and its upper end A is micro- with 50 ohm
The distance of band wire (43) is 2.5mm.
The convex ring 34, is connected with each other and is constituted by upper and lower three parallel lines and upper and lower two vertical pairs line, wherein upper flat
Line L1A length of 2.5mm, a width of 1mm；Lower parallel lines L5A length of 12.5mm, a width of 0.5mm；Intermediate parallel line L3It is a length of
L5-L1, a width of 0.5mm；Two upper vertical line Ls2Length be all 3mm, wide is all 0.5mm；Two lower vertical line Ls4Length be all
2.5mm, wide is all 0.5mm；Described two upper vertical line Ls2It is connected with U-shaped microstrip line 33.
The ground hole 5 is the metallization via that radius is 0.25mm.
Second embodiment：Five pass filters of the design size for 29mm × 22.9mm.
With reference to Fig. 3 and Fig. 4, the five passband band filters of the present invention mainly by micro-strip medium substrate 1, metal ground plate 2,
Resonator 3, input and output feeder line 4, ground hole 5 are constituted.Wherein：
Micro-strip medium substrate 1 adopts dielectric constant for 2.2, double face copper of the thickness for 1.0mm, below double face copper
For metal ground plate 2, it is five mould resonators 3, input and output feeder line 4 and ground hole 5 above double face copper.Wherein：
The input and output feeder line 4, is made up of an alignment interdigitation coupling feed, and each feed line includes 2 interdigital minor matters
41,42 and one section of 50 ohm microstrip 43；Interdigital minor matters 41,42 are connected in parallel at same one end of 50 ohm microstrips 43；It is interdigital
A length of 13mm of minor matters 41,42, a width of 0.76mm, two interdigital minor matters 41, the distance between 42 are 1.48mm；50 ohm microstrips
A length of 7mm of line 43, a width of 3mm.
The resonator 3, which is made up of two identicals, the five mould resonator being staggeredly placed, and each five mould resonator is by short
Road minor matters 31, open circuit minor matters 32,33, convex ring 34 of U-shaped microstrip line and two L-shaped open circuit minor matters 35,36 are constituted；Short-circuit branch
Section 31 is located at the U-shaped microstrip line symmetrical centre on the inside of convex type ring 34, a length of 4.1mm of short-circuit minor matters 31, a width of 0.5mm；Open circuit
Minor matters 32 are located at the U-shaped microstrip line symmetrical centre on the outside of convex type ring 34, a length of 7mm, a width of 1.5mm of minor matters 32 of opening a way；U-shaped is micro-
The upper end A of band wire 33 is parallel to be placed in interdigital minor matters 41, and between 42, lower end B is parallel to be placed on the inside of feeder line 4；Convex ring 34 it is symmetrical
Center is overlapped with the symmetrical centre of U-shaped microstrip line 33, and the top of convex ring 34 is connected with the bottom C of U-shaped microstrip line；Two L-shaped
Open circuit minor matters 35,36 are symmetrically connected on the bottom C of U-shaped microstrip line 33.
The U-shaped microstrip line 33, its upper end A is parallel to feeder line 4, and its a length of 13mm, a width of 1.0mm, and B is parallel for its lower end
In feeder line 4, and a length of 13mm, a width of 1.0mm, its bottom C are perpendicular to feeder line 4, and a length of 16.5mm, a width of 1.0mm；The U-shaped
The total length of microstrip line 33 is 42.5mm, and 33 upper end A of U-shaped microstrip line and the distance of interdigital minor matters 41,42 are 0.24mm.
The L-shaped open circuit minor matters 35,36, its a length of 5.75mm parallel to 33 bottom part of U-shaped microstrip line are a width of
0.4mm；Which is 2.5mm perpendicular to the distance of 33 bottom part of U-shaped microstrip line and U-shaped microstrip line (33) symmetrical centre, and which is a length of
2.25mm, a width of 0.4mm.
The convex ring 34, is connected with each other and is constituted by upper and lower three parallel lines and upper and lower two vertical pairs line, wherein upper parallel
Line L1A length of 4.2mm, a width of 1mm；Lower parallel lines L5A length of 9.8mm, a width of 1mm；Intermediate parallel line L3A length of L5-L1,
A width of 0.2mm；Two upper vertical line Ls2Length be all 3mm, wide is all 0.2mm；Two lower vertical line Ls4Length be all 3mm, it is wide all
For 0.2mm；Described two upper vertical line Ls2It is connected with U-shaped microstrip line 33.
The ground hole 5 is the metallization via that radius is 0.25mm.
The effect of the present invention can be further illustrated by following emulation and test experiments：
Emulation 1. is emulated to first embodiment of the invention in 3 D electromagnetic simulation software HFSS, four passbands for obtaining
Filter response curve figure is as shown in Fig. 5 dotted lines.
Emulation 2. is emulated to second embodiment of the invention in 3 D electromagnetic simulation software HFSS, five passbands for obtaining
Filter response curve figure is as shown in Fig. 6 dotted lines.
Test 1. is tested to four pass filters for processing using vector network analyzer, four passbands for obtaining
Such as Fig. 5 is shown in solid for filter response curve figure.
Test 2. is tested to five pass filters for processing using vector network analyzer, and five for obtaining are led to
Such as Fig. 6 is shown in solid for band filter response curve.
Four pass filters that first embodiment be can be seen that from the response curve of four pass filters of Fig. 5 exist
Respectively define a passband at 1.57GHz, 2.5GHz, 3.5GHz, 5.2GHz, each logical in-band insertion loss be respectively 1.0dB,
0.33dB, 1.33dB, 1.9dB, can reach more than 20dB with interior return loss, and respectively have a biography in each passband both sides
Defeated zero point, makes each passband have good selectivity.
Five pass filters that second embodiment be can be seen that from the response curve of five pass filters of Fig. 6 exist
A passband is defined at 1.57GHz, 2.5GHz, 3.5GHz, 5.2GHz, 5.9GHz respectively, each logical in-band insertion loss is respectively
1.0dB, 0.4dB, 1.1dB, 1.6dB, 1.9dB, can reach more than 16dB with interior return loss, and in each passband both sides
Respectively there is a transmission zero, make each passband have good selectivity.
Above-mentioned example is the preferred embodiments of the present invention, does not constitute any limitation of the invention.Based on the present invention
In embodiment, the every other enforcement obtained under the premise of creative work is not made by those of ordinary skill in the art
Example, belongs to the scope of protection of the invention.
Claims (9)
1. a kind of comb filter based on multimode resonator, including micro-strip medium substrate (1), metal ground plate (2), resonance
Device (3), input and output feeder line (4), metal ground plate are provided with ground hole (5), it is characterised in that：
The input and output feeder line (4), which is made up of an alignment interdigitation coupling feed, and each feed line includes two interdigital minor matters
(41,42) He one section of 50 ohm microstrip (43)；Interdigital minor matters (41,42) it is connected in parallel at the same of 50 ohm microstrips (43)
End；
The resonator (3), which is made up of two identicals, the four mould resonator being staggeredly placed, and each four mould resonator is by short circuit
Minor matters (31), open circuit minor matters (32), U-shaped microstrip line (33) and a convex ring (34) are constituted；Short-circuit minor matters (31) are positioned at convex
U-shaped microstrip line symmetrical centre on the inside of ring (34), open circuit minor matters (32) positioned at the U-shaped microstrip line on the outside of convex ring (34) it is symmetrical in
The heart；The upper end (A) of U-shaped microstrip line (33) is parallel be placed in interdigital minor matters (41,42) between, lower end (B) is parallel to be placed in feeder line (4)
Side；The symmetrical centre of convex ring (34) is overlapped with the symmetrical centre of U-shaped microstrip line (33), and the top of convex ring (34) is micro- with U-shaped
The bottom (C) of band wire is connected.
2. the comb filter based on multimode resonator according to claim 1, it is characterised in that interdigital minor matters (41,
42) a length of 13mm, a width of 0.76mm, and two interdigital minor matters (41, the distance between 42) it is 1.48mm；50 ohm microstrips
(43) a length of 6mm, a width of 3mm.
3. the comb filter based on multimode resonator according to claim 1, it is characterised in that short-circuit minor matters (31)
A length of 4.1mm, a width of 0.5mm；A length of 7.0mm, a width of 1.5mm of open circuit minor matters (32).
4. the comb filter based on multimode resonator according to claim 1, it is characterised in that U-shaped microstrip line
(33) upper end (A) parallel to feeder line (4), its a length of 13mm, a width of 1.0mm；The lower end (B) of U-shaped microstrip line (33) parallel to
Feeder line (4), its a length of 13mm, a width of 1.0mm；Perpendicular to feeder line (4), which is a length of for the bottom (C) of U-shaped microstrip line (33)
16.5mm, a width of 1.0mm；The total length of U-shaped microstrip line (33) is 42.5mm；U-shaped microstrip line (33) upper end (A) and interdigital minor matters
(41, distance 42) is 0.24mm, and which is 2.5mm with the distance of 50 ohm microstrips (43).
5. the comb filter based on multimode resonator according to claim 1, it is characterised in that convex ring (34) by
Upper and lower three parallel lines and upper and lower two vertical pairs line are connected with each other composition, wherein upper parallel lines L1A length of 2.5mm, it is a width of
1mm；Lower parallel lines L5A length of 12.5mm, a width of 0.5mm；Intermediate parallel line L3A length of L5-L1, a width of 0.5mm；On two
Vertical line L2Length be all 3mm, wide is all 0.5mm；Two lower vertical line Ls4Length be all 2.5mm, wide is all 0.5mm；Described two
Vertical line L on bar2It is connected with U-shaped microstrip line (33).
6. a kind of comb filter based on multimode resonator, including micro-strip medium substrate (1), metal ground plate (2), resonance
Device (3), input and output feeder line (4), metal ground plate are provided with ground hole (5), it is characterised in that：
The input and output feeder line (4), which is made up of an alignment interdigitation coupling feed, and each feed line includes two interdigital minor matters
(41,42) He one section of 50 ohm microstrip (43)；Interdigital minor matters (41,42) it is connected in parallel at the same of 50 ohm microstrips (43)
End；
The resonator (3), which is made up of two identicals, the five mould resonator being staggeredly placed, and each five mould resonator is by short circuit
Minor matters (31), open circuit minor matters (32), U-shaped microstrip line (33), a convex ring (34) and two L-shaped open a way minor matters (35,36) structure
Into；U-shaped microstrip line symmetrical centre of the short-circuit minor matters (31) on the inside of convex ring (34), open circuit minor matters (32) is positioned at convex ring
(34) the U-shaped microstrip line symmetrical centre on the outside of；The upper end (A) of U-shaped microstrip line (33) is parallel be placed in interdigital minor matters (41,42) it
Between, lower end (B) is parallel to be placed on the inside of feeder line (4)；The symmetrical centre of convex ring (34) and the symmetrical centre weight of U-shaped microstrip line (33)
Close, the top of convex ring (34) is connected with the bottom (C) of U-shaped microstrip line；Two L-shaped open circuit minor matters (35,36) it is symmetrically connected to U
On the bottom (C) of shaped microstrip line (33).
7. the comb filter based on multimode resonator according to claim 6, it is characterised in that L-shaped is opened a way minor matters
(35,36) parallel to a length of 5.75mm of U-shaped microstrip line (33) bottom part, a width of 0.4mm；L-shaped open circuit minor matters (35,36) hang down
The straight distance in U-shaped microstrip line (33) bottom part and U-shaped microstrip line (33) symmetrical centre is 2.5mm, its a length of 2.25mm, wide
For 0.4mm.
8. the comb filter based on multimode resonator according to claim 6, it is characterised in that short-circuit minor matters (31)
A length of 4.1mm, a width of 0.7mm；A length of 4.5mm, a width of 1mm of open circuit minor matters (32).
9. the comb filter based on multimode resonator according to claim 6, it is characterised in that convex ring (34) by
Upper and lower three parallel lines and upper and lower two vertical pairs line are connected with each other composition, wherein upper parallel lines L1A length of 4.2mm, a width of 1mm；
Lower parallel lines L5A length of 9.8mm, a width of 1mm；Intermediate parallel line L3A length of L5-L1, a width of 0.2mm；Two upper vertical line Ls2
Length be all 3mm, wide is all 0.2mm；Two lower vertical line Ls4Length be all 3mm, wide is all 0.2mm；Described two upper vertical
Line L2It is connected with U-shaped microstrip line (33).
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| CN201410691241.5A CN104409808B (en) | 2014-11-26 | 2014-11-26 | Comb filter based on multimode resonator |
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| CN201410691241.5A CN104409808B (en) | 2014-11-26 | 2014-11-26 | Comb filter based on multimode resonator |
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| CN104409808B true CN104409808B (en) | 2017-03-29 |
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| CN106159393A (en) * | 2015-04-08 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of wave filter |
| CN105024124B (en) * | 2015-08-13 | 2018-03-06 | 电子科技大学 | A kind of new more minor matters multimode resonators and the micro band superwide band bandpass filter based on it |
| CN107086338B (en) * | 2016-02-16 | 2019-05-21 | 青岛海尔电子有限公司 | Four mould defects ground formula filter |
| CN107086347A (en) * | 2016-02-16 | 2017-08-22 | 青岛海尔电子有限公司 | Four mould defects ground formula resonator |
| CN106921012B (en) * | 2017-03-18 | 2019-03-26 | 深圳市景程信息科技有限公司 | Highly selective double frequency band-pass filter |
| JP6534406B2 (en) * | 2017-03-21 | 2019-06-26 | 太陽誘電株式会社 | Multiplexer |
| CN107546446B (en) * | 2017-07-18 | 2019-03-05 | 电子科技大学 | The changeable reconfigurable filter of multimode multi-pass band |
| CN107482290B (en) * | 2017-08-11 | 2020-10-16 | 华中科技大学 | Seven-passband band-pass filter |
| CN108509749B (en) * | 2018-04-18 | 2021-08-24 | 电子科技大学 | Design method of dual-passband power amplifier |
| CN111682292B (en) * | 2020-06-02 | 2022-05-20 | 南京师范大学 | Four-way power division filter based on four-mode resonator |
| CN115189108B (en) * | 2022-08-08 | 2023-10-20 | 河南科技大学 | Double-passband filter based on multimode resonator |
| CN115513620B (en) * | 2022-09-23 | 2023-10-31 | 中国科学院物理研究所 | Microstrip pattern layer, preparation method thereof and ultra-wide stop band-pass filter |
| CN118263639A (en) * | 2022-12-27 | 2024-06-28 | 中兴光电子技术有限公司 | Microstrip filter structure, manufacturing method, plate structure and optical module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035986A (en) * | 2012-12-15 | 2013-04-10 | 华南理工大学 | Ultra wide-band filter based on double minor matters loading harmonic oscillator |
| CN203339279U (en) * | 2013-03-11 | 2013-12-11 | 华南理工大学 | Controllable three-frequency filter loaded based on open-circuit stepped impedance line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103035986A (en) * | 2012-12-15 | 2013-04-10 | 华南理工大学 | Ultra wide-band filter based on double minor matters loading harmonic oscillator |
| CN203339279U (en) * | 2013-03-11 | 2013-12-11 | 华南理工大学 | Controllable three-frequency filter loaded based on open-circuit stepped impedance line |
Non-Patent Citations (1)
| Title |
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| Novel Compact Tri-Band Bandpass Filter Using Multi-Stub-Loaded Resonator;Li Gao等;《Progress In Electromagnetics Research C》;20140527;第50卷;全文 * |
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