CN110429363A - A kind of three passband function filter-dividers based on multimode fork-shaped resonator - Google Patents
A kind of three passband function filter-dividers based on multimode fork-shaped resonator Download PDFInfo
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- CN110429363A CN110429363A CN201910807332.3A CN201910807332A CN110429363A CN 110429363 A CN110429363 A CN 110429363A CN 201910807332 A CN201910807332 A CN 201910807332A CN 110429363 A CN110429363 A CN 110429363A
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- 238000004891 communication Methods 0.000 description 6
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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
- H01P1/20381—Special shape resonators
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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
- H01P1/2039—Galvanic coupling between Input/Output
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
- H01P7/082—Microstripline resonators
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Abstract
The invention discloses a kind of three passband function filter-dividers based on multimode fork-shaped resonator, including medium substrate, medium substrate bottom surface is equipped with metal ground plate, top surface is equipped with input port feeder line, the first output feeder and the second output feeder, input port feeder line is located at the middle part of medium substrate, and the first output feeder and the second output feeder are symmetrically arranged at the two sides of input port feeder line；Three mould resonator of three mould resonator of the first fork-shaped and the second fork-shaped is respectively equipped between the input port feeder line and the first output feeder；Three mould resonator of third fork-shaped and three mould resonator of the 4th fork-shaped are respectively equipped between the input port feeder line and the second output feeder.
Description
Technical field
The present invention relates to microwave passive component technical field, especially a kind of three passband function based on multimode fork-shaped resonator
Filter-divider.
Background technique
In modern wireless communication systems, power divider and filter are important radio-frequency front-end passive device, in order to
It realizes power distribution and filter function simultaneously, often designs in cascaded fashion in circuit, in this manner, not only circuit
Volume will increase, and circuit performance can reduce.Therefore, in order to lower circuit size, circuit performance is improved, always in recent years
In the research for exploring the power divider with filter response.Meanwhile as the continuous development of modern wireless communication systems also mentions
The high demand to multi-pass with communication system.
Document 1 [K.J.Song, M.Y.Fan, and F.Zhang, " Compact Triple-Band Power Divider
Integrated Bandpass-Filtering Response Using Short-Circuited SIRs,”IEEE Tra
Ns.Compon.Packag.Manufact.Technol., vol.7, no.7, July.2017] by utilizing coupling short ladder
Electric impedance resonator and half-wave resonator realize three passband filter responses, can be obtained simultaneously by adjusting impedance ratio and electrical length
The passband required to three.But due to circuit structure complexity, and interport isolation is higher, and the problem of Out-of-band rejection difference influences
The extensive use of the function filter-divider.
Document 2 [C.-F.Chen, T.-Y.Huang, and R.-B.Wu, " Novel compact net-type
resonators and their applications to microstrip bandpass filters,”IEEE
Trans.Microw.Theory Techn., vol.54, no.2, pp.755-762, Feb.2006] by humorous using three mould of net form
Shake device, on the basis of not significantly increasing circuit size, simply and efficiently realizes a kind of multi-pass band microstrip filter, still,
Due to the limitation of design parameter freedom degree, it is difficult to realize the design requirement to all passbands simultaneously, the realization for increasing design is difficult
Degree.
Document 3 [R.G ó mez-Garcia, R.Loeches-Sanchez, D.Psychogiou, and D.Peroulis,
“Single/multi-band Wilkinson-type power dividers with embedded transversal
filtering sections and application to channelized filters,”IEEE
Trans.Circuits Syst.I, Reg.Papers, vol.62, no.6, pp.1518-1527, Jun.2015.] propose one
Kind has the novel mono-/multi- passband Wilkinson power divider of Inherent filtration ability, but its circuit volume is big, and interport isolation is owed
It is good.
Summary of the invention
Goal of the invention: a kind of based on more the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide
Three passband function filter-dividers of mould fork-shaped resonator.
In order to solve the above-mentioned technical problem, the invention discloses a kind of three passband function based on multimode fork-shaped resonator point filters
Wave device, including medium substrate, medium substrate bottom surface are equipped with metal ground plate, and top surface is equipped with input port feeder line, the first output feedback
Line and the second output feeder, input port feeder line are located at the middle part of medium substrate, the first output feeder and the second output feeder point
It is not symmetricly set on the two sides of input port feeder line；
Three mould resonator of the first fork-shaped and the second fork are respectively equipped between the input port feeder line and the first output feeder
Three mould resonator of shape；
Three mould resonator of third fork-shaped and the 4th fork are respectively equipped between the input port feeder line and the second output feeder
Three mould resonator of shape.
In the present invention, the input port feeder line include the one 50 ohm microstrip conduction band and input coupling line, the 1st
Ohm microstrip conduction band one end connects input coupling line close to medium substrate first side, the other end；One 50 ohm microstrip
Conduction band and medium substrate first side junction are input terminal.
In the present invention, first output feeder is made of the 2nd 50 ohm microstrip conduction band and L shape output coupling line, the
2 50 ohm microstrip conduction bands connect close to medium substrate second side, L shape output coupling line and the 2nd 50 ohm microstrip conduction band
It connects, L shape output coupling line is parallel with input coupling line, and the 2nd 50 ohm microstrip conduction band is vertical with input coupling line；
50 ohm microstrip conduction bands and medium substrate second side junction are the first output end.
In the present invention, second output feeder is made of the 3rd 50 ohm microstrip conduction band and L shape output coupling line, the
3 50 ohm microstrip conduction bands connect close to medium substrate third side, L shape output coupling line and the 3rd 50 ohm microstrip conduction band
It connects, L shape output coupling line is parallel with input coupling line, and the 3rd 50 ohm microstrip conduction band is vertical with input coupling line；
50 ohm microstrip conduction bands and medium substrate third side junction are third output end.
In the present invention, three mould resonator of the first fork-shaped includes first terminal short circuit minor matters, first terminal open circuit minor matters, second
Open-end minor matters, the first fork-shaped open-end minor matters and the first earthing rod；
First earthing rod one end connects first terminal short circuit minor matters end, and the other end is connected to metal across medium substrate and connects
Floor；
First terminal open circuit minor matters and second terminal open circuit minor matters are symmetrically arranged at first terminal short circuit minor matters two sides；
First fork-shaped open-end minor matters and first terminal short circuit minor matters are in same straight line, the first fork-shaped open-end minor matters
Two sides be respectively symmetrically equipped with the first L shape open-end minor matters and the 2nd L shape open-end minor matters.
In the present invention, three mould resonator of the second fork-shaped includes second terminal short circuit minor matters, third terminal open circuit minor matters, the 4th
Open-end minor matters, the second fork-shaped open-end minor matters and the second earthing rod；
Second earthing rod one end connects second terminal short circuit minor matters, and the other end passes through medium substrate and is connected to metallic ground
Plate；
Third terminal open circuit minor matters and the 4th open-end minor matters are symmetrically arranged at second terminal short circuit minor matters two sides；
Second fork-shaped open-end minor matters and second terminal short circuit minor matters are in same straight line, the second fork-shaped open-end minor matters
Two sides be respectively symmetrically equipped with the 3rd L shape open-end minor matters and the 4th L shape open-end minor matters.
In the present invention, three mould resonator of third fork-shaped includes third terminal short circuit minor matters, the 5th open-end minor matters, the 6th
Open-end minor matters, third fork-shaped open-end minor matters and third earthing rod；
Third earthing rod one end connects third terminal short circuit minor matters, and the other end passes through medium substrate and is connected to metallic ground
Plate；
5th open-end minor matters and the 6th open-end minor matters are symmetrically arranged at third terminal short circuit minor matters two sides；
Third fork-shaped open-end minor matters and third terminal short circuit minor matters are in same straight line, third fork-shaped open-end minor matters
Two sides be respectively symmetrically equipped with the 5th L shape open-end minor matters and the 6th L shape open-end minor matters.
In the present invention, the three mould resonator of the 4th fork-shaped include the 4th terminal short circuit minor matters, the 7th open-end minor matters,
8th open-end minor matters, the 4th fork-shaped open-end minor matters and the 4th earthing rod；
4th earthing rod one end connects the 4th terminal short circuit minor matters, and the other end passes through medium substrate and is connected to metallic ground
Plate；
7th open-end minor matters and the 8th open-end minor matters are symmetrically arranged at the 4th terminal short circuit minor matters two sides；
4th fork-shaped open-end minor matters and the 4th terminal short circuit minor matters are in same straight line, the 4th fork-shaped open-end minor matters
Two sides be respectively symmetrically equipped with the 7th L shape open-end minor matters and the 8th L shape open-end minor matters.
In the present invention, three mould resonator of the first fork-shaped and three mould resonator of third fork-shaped are symmetrical in input coupling line two sides；
Second fork-shaped, three mould resonator and three mould resonator of the 4th fork-shaped are symmetrical in input coupling line two sides；
It is symmetrical arranged centered on first fork-shaped, three mould resonator and three mould resonator of the 4th fork-shaped；
It is symmetrical arranged centered on three mould resonator of three mould resonator of third fork-shaped and the second fork-shaped.
Input port feeder line, the first output feeder, the second output feeder and four three mould resonators of fork-shaped of the invention
Setting, it is compact-sized, can be realized on monolithic pcb board, easy to process integrated, production cost is low.
The present invention utilizes the electric field distribution characteristic of four structures identical fork-shaped three mould resonator and main transmission line, has height
Selective and more pass-band performances.
The present invention using a wavelength main transmission line couple and open a way with resonator minor matters generation zero point characteristic, have
Good Out-of-band rejection characteristic.
Function filter-divider of the invention utilizes the indirect isolation resistance of resonator, and interport isolation is good, is suitable for modern nothing
Line communication system.
The utility model has the advantages that the present invention passes through printed-circuit board manufacturing technology to the gold in circuit substrate front and the back side in manufacture
Category face carries out processing corrosion, thus the metal pattern needed for being formed, structure is simple, can realize on monolithic pcb board, easy to process
Integrated, production cost is low.Meanwhile using multimode fork-shaped resonator and network topology, good power splitting/synthesis network and filter are obtained
Wave property, by cleverly in the indirect isolation resistance of resonator, obtaining good port isolation characteristic.
Detailed description of the invention
The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, of the invention is above-mentioned
And/or otherwise advantage will become apparent.
Fig. 1 is a kind of schematic perspective view of the three passband function filter-dividers based on multimode fork-shaped resonator of the present invention.
Fig. 2 is the front view of embodiment 1.
Fig. 3 is the structure size schematic diagram of embodiment 1.
Fig. 4 is the S parameter analogous diagram of embodiment 1.
Fig. 5 is the matching properties and isolation characteristic S parameter analogous diagram of two output ports of embodiment 1.
Fig. 6 is the S parameter analogous diagram two of embodiment 1.
In figure, input port feeder line 1, the first output feeder 2, the second output feeder 3, three mould resonator 4 of the first fork-shaped,
Three mould resonator 5 of tree binary lorm, three mould resonator 6 of third fork-shaped, three mould resonator 7 of the 4th fork-shaped, metal ground plate 8, rectangle are situated between
Matter substrate 9, the first isolation resistance R1, the second isolation resistance R2。
Specific embodiment
Embodiment, such as Fig. 1 present embodiments provide a kind of three passband function filter-dividers based on multimode fork-shaped resonator,
Including medium substrate 9,9 bottom surface of medium substrate is equipped with metal ground plate 8, and top surface is equipped with input port feeder line 1, the first output feeder
2 and second output feeder 3, input port feeder line 1 be located at the middle part of medium substrate 9, the first output feeder 2 and the second output feeder
3 are symmetrically arranged at the two sides of input port feeder line 1；
Three mould resonator 4 of the first fork-shaped and the second fork-shaped are respectively equipped between input port feeder line 1 and the first output feeder 2
Three mould resonators 6；
Three mould resonator 5 of third fork-shaped and the 4th fork-shaped are respectively equipped between input port feeder line 1 and the second output feeder 3
Three mould resonators 7.
Input port feeder line 1 includes the one 50 ohm microstrip conduction band 11 and input coupling line 12, the one 50 ohm microstrip
11 one end of line conduction band connects input coupling line 12 close to 9 first side 9a of medium substrate, the other end；One 50 ohm microstrip is led
Band 11 and 9 first side junction of medium substrate are input terminal.
First output feeder 2 is made of the 2nd 50 ohm microstrip conduction band 21 and L shape output coupling line 22, and the 2nd 50 ohm
Microstrip line conduction band 21 connects close to 9 second side 9b of medium substrate, L shape output coupling line 22 and the 2nd 50 ohm microstrip conduction band 21
It connects, L shape output coupling line 22 is parallel with input coupling line 12, and the 2nd 50 ohm microstrip conduction band 21 hangs down with input coupling line 12
Directly；
50 ohm microstrip conduction bands 21 are the first output end with 9 second side junction of medium substrate.
4, a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
Second output feeder 3 is made of the 3rd 50 ohm microstrip conduction band 31 and L shape output coupling line 32, and the 3rd 50 ohm microstrip is led
Band 31 is connect close to 9 third side 9c, L shape output coupling line 32 of medium substrate with the 3rd 50 ohm microstrip conduction band 31, and L shape is defeated
Coupling line 32 is parallel with input coupling line 12 out, and the 3rd 50 ohm microstrip conduction band 31 is vertical with input coupling line 12；
50 ohm microstrip conduction bands 31 are third output end with 9 third side junction of medium substrate.
First fork-shaped, three mould resonator 4 includes first terminal short circuit minor matters 41, first terminal open circuit minor matters 42, second terminal
Open circuit minor matters 43, the first fork-shaped open-end minor matters 44 and the first earthing rod 47；
First earthing rod, 47 one end connects 41 end of first terminal short circuit minor matters, and the other end passes through medium substrate 9 and is connected to
Metal ground plate 8；
First terminal open circuit minor matters 42 and second terminal open circuit minor matters 43 are symmetrically arranged at first terminal short circuit minor matters
41 two sides；
First fork-shaped open-end minor matters 44 are with first terminal short circuit minor matters 41 in same straight line, the first fork-shaped open-end
The two sides of minor matters 44 are respectively symmetrically equipped with the first L shape open-end minor matters 45 and the 2nd L shape open-end minor matters 46.
Second fork-shaped, three mould resonator 5 includes second terminal short circuit minor matters 51, third terminal open circuit minor matters 52, the 4th terminal
Open circuit minor matters 53, the second fork-shaped open-end minor matters 54 and the second earthing rod 57；
Second earthing rod, 57 one end connects second terminal short circuit minor matters 51, and the other end passes through medium substrate 9 and is connected to metal
Earth plate 8；
Third terminal open circuit minor matters 52 and the 4th open-end minor matters 53 are symmetrically arranged at second terminal short circuit minor matters
51 two sides；
Second fork-shaped open-end minor matters 54 are with second terminal short circuit minor matters 51 in same straight line, the second fork-shaped open-end
The two sides of minor matters 54 are respectively symmetrically equipped with the 3rd L shape open-end minor matters 55 and the 4th L shape open-end minor matters 56.
Three mould resonator 6 of third fork-shaped includes third terminal short circuit minor matters 61, the 5th open-end minor matters 62, the 6th terminal
Open circuit minor matters 63, third fork-shaped open-end minor matters 64 and third earthing rod 67；
67 one end of third earthing rod connects third terminal short circuit minor matters 61, and the other end passes through medium substrate 9 and is connected to metal
Earth plate 8；
5th open-end minor matters 62 and the 6th open-end minor matters 63 are symmetrically arranged at third terminal short circuit minor matters
61 two sides；
Third fork-shaped open-end minor matters 64 and third terminal short circuit minor matters 61 are in same straight line, third fork-shaped open-end
The two sides of minor matters 64 are respectively symmetrically equipped with the 5th L shape open-end minor matters 65 and the 6th L shape open-end minor matters 66.
4th fork-shaped, three mould resonator 7 includes the 4th terminal short circuit minor matters 71, the 7th open-end minor matters 72, the 8th terminal
Open circuit minor matters 73, the 4th fork-shaped open-end minor matters 74 and the 4th earthing rod 77；
4th earthing rod, 77 one end connects the 4th terminal short circuit minor matters 71, and the other end passes through medium substrate 9 and is connected to metal
Earth plate 8；
7th open-end minor matters 72 and the 8th open-end minor matters 73 are symmetrically arranged at the 4th terminal short circuit minor matters
71 two sides；
4th fork-shaped open-end minor matters 74 and the 4th terminal short circuit minor matters 71 are in same straight line, the 4th fork-shaped open-end
The two sides of minor matters 74 are respectively symmetrically equipped with the 7th L shape open-end minor matters 75 and the 8th L shape open-end minor matters 76.
First fork-shaped, three mould resonator 4 and three mould resonator 5 of third fork-shaped are symmetrical in 12 two sides of input coupling line；
Second fork-shaped, three mould resonator 6 and three mould resonator 7 of the 4th fork-shaped are symmetrical in 12 two sides of input coupling line；
It is symmetrical arranged centered on first fork-shaped, three mould resonator 4 and three mould resonator 7 of the 4th fork-shaped；
It is symmetrical arranged centered on three mould resonator 6 of three mould resonator 5 of third fork-shaped and the second fork-shaped.
Front view is as shown in Fig. 2, related dimensions is as shown in Figure 3.Used 7 relative dielectric constant of medium substrate
It is 3.55, with a thickness of 0.508mm, loss angle tangent 0.0027.In conjunction with Fig. 3, each dimensional parameters of function filter-divider are as follows: W1
=0.21mm, W2=0.42mm, W3=0.21mm, W4=0.3mm, W5=1.18mm, L1=5mm, L2=1.41mm, L3=
2.987mm L4=12.44mm, L5=9.95mm, L6=7.81mm, L7=3.473mm, L8=9.7mm, L9=1.67mm, L10=
1.9mm, g1=0.22mm, g2=0.18mm, R1=2500 Ω, R2=5000 Ω.
This example function filter-divider is the modeling and simulating in electromagnetic simulation software HFSS.13.0.Fig. 4 is function in this example
The S parameter analogous diagram of filter-divider, it can be seen from the figure that the centre frequency of three passbands function, three passbands of filter-divider is
1.53GHz, 2.0GHz, 2.36GHz, corresponding 3dB relative bandwidth are respectively 3.56%, 8.65%, 2.75%, echo in passband
Loss is lower than 18.4dB, and minimum insertion loss is 1.2dB.Passband is outer, and there are five transmission zeros, and the example function filter-divider is had
There are good frequency selectivity and out-of-band harmonics inhibition.
Fig. 5 is that two power output port matching properties of function filter-divider in this example and the S parameter of isolation characteristic are imitated
True figure, it can be seen from the figure that the output port return loss in the example function filter-divider passband is lower than 11.8dB, band it is interior every
It is better than 15.7dB from degree.
The present invention is carried out in manufacture by metal covering of the printed-circuit board manufacturing technology to circuit substrate front and the back side
Processing corrosion, thus the metal pattern needed for being formed, structure is simple, can realize on monolithic pcb board, easy to process integrated, raw
It produces at low cost.Meanwhile using multimode fork-shaped resonator and network topology, good power splitting/synthesis network and filtering characteristic are obtained,
By cleverly in the indirect isolation resistance of resonator, obtaining good port isolation characteristic.
Due to three passband function filter-dividers of the invention be provided simultaneously with highly selective, compact-sized, interport isolation it is good with
And good Out-of-band rejection characteristic is selectively high, insertion loss is small, Out-of-band rejection performance is good, is suitable for Modern wireless communication system
System.
Such as Fig. 6, since the coupled line structure in this circuit structure can periodically generate zero point, so can be outside passband
Wider frequency section in realize good Out-of-band rejection effect.
The present embodiment utilizes multimode fork-shaped resonator and network topology, obtains good power splitting/synthesis network and filtering is special
Property, and dexterously in the indirect isolation resistance of resonator, obtain good port isolation characteristic realize it is a kind of it is highly selective,
Compact-sized, interport isolation is good and good Out-of-band rejection characteristic selectivity is high, insertion loss is small, Out-of-band rejection performance is good
Three passband function filter-dividers, be suitable for modern wireless communication systems.
The thinking and method of the present invention provides a kind of three passband function filter-dividers based on multimode fork-shaped resonator, specifically
Realize that there are many method and the approach of the technical solution, the above is only a preferred embodiment of the present invention, it is noted that for
For those skilled in the art, without departing from the principle of the present invention, can also make it is several improvement and
Retouching, these modifications and embellishments should also be considered as the scope of protection of the present invention.Each component part being not known in the present embodiment
It is realized with the prior art.
Claims (9)
1. a kind of three passband function filter-dividers based on multimode fork-shaped resonator, which is characterized in that including medium substrate (9), be situated between
Matter substrate (9) bottom surface is equipped with metal ground plate (8), and top surface is equipped with input port feeder line (1), the first output feeder (2) and second
Output feeder (3), input port feeder line (1) are located at the middle part of medium substrate (9), the first output feeder (2) and the second output feedback
Line (3) is symmetrically arranged at the two sides of input port feeder line (1)；
Three mould resonator (4) of the first fork-shaped and are respectively equipped between the input port feeder line (1) and the first output feeder (2)
Three mould resonator (6) of tree binary lorm；
Three mould resonator (5) of third fork-shaped and are respectively equipped between the input port feeder line (1) and the second output feeder (3)
Four fork-shapeds, three mould resonator (7).
2. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
The input port feeder line (1) includes the one 50 ohm microstrip conduction band (11) and input coupling line (12), and the one 50 ohm micro-
Band line conduction band (11) one end connects input coupling line (12) close to medium substrate (9) first side (9a), the other end；One 50 Europe
Nurse microstrip line conduction band (11) and medium substrate (9) first side junction are input terminal.
3. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
First output feeder (2) is made of the 2nd 50 ohm microstrip conduction band (21) and L shape output coupling line (22), the 2nd 50 Europe
Nurse microstrip line conduction band (21) is close to medium substrate (9) second side (9b), L shape output coupling line (22) and the 2nd 50 ohm microstrip
Line conduction band (21) connection, L shape output coupling line (22) is parallel with input coupling line (12), the 2nd 50 ohm microstrip conduction band (21)
It is vertical with input coupling line (12)；
50 ohm microstrip conduction bands (21) and 9 second side junction of medium substrate are the first output end.
4. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
Second output feeder (3) is made of the 3rd 50 ohm microstrip conduction band (31) and L shape output coupling line (32), the 3rd 50 Europe
Nurse microstrip line conduction band (31) is close to medium substrate (9) third side (9c), L shape output coupling line (32) and the 3rd 50 ohm microstrip
Line conduction band (31) connection, L shape output coupling line (32) is parallel with input coupling line (12), the 3rd 50 ohm microstrip conduction band (31)
It is vertical with input coupling line (12)；
50 ohm microstrip conduction bands (31) and medium substrate (9) third side junction are third output end.
5. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
First fork-shaped, three mould resonator (4) includes first terminal short circuit minor matters (41), first terminal is opened a way minor matters (42), second terminal is opened
Road minor matters (43), the first fork-shaped open-end minor matters (44) and the first earthing rod (47)；
First earthing rod (47) one end connects first terminal short circuit minor matters (41) end, and the other end is connected across medium substrate (9)
To metal ground plate (8)；
First terminal open circuit minor matters (42) and second terminal open circuit minor matters (43) are symmetrically arranged at first terminal short circuit minor matters
(41) two sides；
First fork-shaped open-end minor matters (44) and first terminal short circuit minor matters (41) are in same straight line, the first fork-shaped open-end
The two sides of minor matters (44) are respectively symmetrically equipped with the first L shape open-end minor matters (45) and the 2nd L shape open-end minor matters (46).
6. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
Second fork-shaped, three mould resonator (5) includes second terminal short circuit minor matters (51), third terminal is opened a way minor matters (52), the 4th terminal is opened
Road minor matters (53), the second fork-shaped open-end minor matters (54) and the second earthing rod (57)；
Second earthing rod (57) one end connects second terminal short circuit minor matters (51), and the other end passes through medium substrate (9) and is connected to gold
Belong to earth plate (8)；
Third terminal open circuit minor matters (52) and the 4th open-end minor matters (53) are symmetrically arranged at second terminal short circuit minor matters
(51) two sides；
Second fork-shaped open-end minor matters (54) and second terminal short circuit minor matters (51) are in same straight line, the second fork-shaped open-end
The two sides of minor matters (54) are respectively symmetrically equipped with the 3rd L shape open-end minor matters (55) and the 4th L shape open-end minor matters (56).
7. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
Three mould resonator (6) of third fork-shaped includes that third terminal short circuit minor matters (61), the 5th open-end minor matters (62), the 6th terminal are opened
Road minor matters (63), third fork-shaped open-end minor matters (64) and third earthing rod (67)；
Third earthing rod (67) one end connects third terminal short circuit minor matters (61), and the other end passes through medium substrate (9) and is connected to gold
Belong to earth plate (8)；
5th open-end minor matters (62) and the 6th open-end minor matters (63) are symmetrically arranged at third terminal short circuit minor matters
(61) two sides；
Third fork-shaped open-end minor matters (64) and third terminal short circuit minor matters (61) are in same straight line, third fork-shaped open-end
The two sides of minor matters (64) are respectively symmetrically equipped with the 5th L shape open-end minor matters (65) and the 6th L shape open-end minor matters (66).
8. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 1, which is characterized in that
4th fork-shaped, the three mould resonator (7) includes the 4th terminal short circuit minor matters (71), the 7th open-end minor matters (72), the 8th end
End open circuit minor matters (73), the 4th fork-shaped open-end minor matters (74) and the 4th earthing rod (77)；
4th earthing rod (77) one end connects the 4th terminal short circuit minor matters (71), and the other end passes through medium substrate (9) and is connected to gold
Belong to earth plate (8)；
7th open-end minor matters (72) and the 8th open-end minor matters (73) are symmetrically arranged at the 4th terminal short circuit minor matters
(71) two sides；
4th fork-shaped open-end minor matters (74) and the 4th terminal short circuit minor matters (71) are in same straight line, the 4th fork-shaped open-end
The two sides of minor matters (74) are respectively symmetrically equipped with the 7th L shape open-end minor matters (75) and the 8th L shape open-end minor matters (76).
9. a kind of three passband function filter-dividers based on multimode fork-shaped resonator according to claim 2, which is characterized in that
First fork-shaped, three mould resonator (4) and three mould resonator (5) of third fork-shaped are symmetrical in input coupling line (12) two sides；
Second fork-shaped, three mould resonator (6) and three mould resonator (7) of the 4th fork-shaped are symmetrical in input coupling line (12) two sides；
It is symmetrical arranged centered on first fork-shaped, three mould resonator (4) and three mould resonator (7) of the 4th fork-shaped；
It is symmetrical arranged centered on three mould resonator (6) of three mould resonator (5) of third fork-shaped and the second fork-shaped.
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| CN115189108A (en) * | 2022-08-08 | 2022-10-14 | 河南科技大学 | Double-passband filter based on multimode resonator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224205A (en) * | 2020-01-10 | 2020-06-02 | 电子科技大学 | Microstrip power divider with good stop band characteristic |
| CN111384534A (en) * | 2020-02-28 | 2020-07-07 | 南京智能高端装备产业研究院有限公司 | Three-way band-pass power division filter |
| CN111384534B (en) * | 2020-02-28 | 2021-08-27 | 南京智能高端装备产业研究院有限公司 | Three-way band-pass power division filter |
| CN111682292A (en) * | 2020-06-02 | 2020-09-18 | 南京师范大学 | Four-way band-pass power division filter based on four-mode resonator |
| CN111682292B (en) * | 2020-06-02 | 2022-05-20 | 南京师范大学 | Four-way power division filter based on four-mode resonator |
| CN113381142A (en) * | 2021-05-21 | 2021-09-10 | 南京智能高端装备产业研究院有限公司 | Three-passband power division filter with high frequency selectivity |
| CN113381142B (en) * | 2021-05-21 | 2022-03-11 | 南京智能高端装备产业研究院有限公司 | Three-passband power division filter with high frequency selectivity |
| CN115189108A (en) * | 2022-08-08 | 2022-10-14 | 河南科技大学 | Double-passband filter based on multimode resonator |
| CN115189108B (en) * | 2022-08-08 | 2023-10-20 | 河南科技大学 | Double-passband filter based on multimode resonator |
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