CN206422193U - The triplexer for sharing two three mode resonant cavities based on waveguide feed - Google Patents
The triplexer for sharing two three mode resonant cavities based on waveguide feed Download PDFInfo
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- CN206422193U CN206422193U CN201720035773.2U CN201720035773U CN206422193U CN 206422193 U CN206422193 U CN 206422193U CN 201720035773 U CN201720035773 U CN 201720035773U CN 206422193 U CN206422193 U CN 206422193U
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Abstract
The utility model discloses a kind of triplexer for sharing two three mode resonant cavities based on waveguide feed, including the one or three mode resonant cavity, the two or three mode resonant cavity, first wave guide, second waveguide, the 3rd waveguide and the 4th waveguide；The bottom and top of one or three mode resonant cavity have gap, and the top of the one or three mode resonant cavity is coupled by gap with the two or three mode resonant cavity, and the bottom of the one or three mode resonant cavity is coupled by gap with first wave guide；Top, right part and the left part of two or three mode resonant cavity have gap, and top, right part and the left part of the two or three mode resonant cavity are coupled by gap with second waveguide, the 3rd waveguide and the 4th waveguide respectively.The characteristics of the utility model has high selectivity, high q-factor, designs and process simple, disclosure satisfy that the requirement of miniaturization communication.
Description
Technical field
The utility model is related to a kind of triplexer, especially a kind of shared two three mode resonant cavities based on waveguide feed
Triplexer, belongs to wireless communication field.
Background technology
Microwave filter is transmitting terminal and the essential device of receiving terminal in Modern Communication System, and it plays separation to signal
Effect, allows useful signal is as zero-decrement as possible to pass through, and suppressing it to the big decay as far as possible of useless signal passes through.With
Frequency band between the development of wireless communication technology, signal is more and more narrow, and this just proposes higher to the specification and reliability of wave filter
Requirement.
Cavity body filter, as one of branch, is exactly that, using cavity body structure, a cavity can be equivalent into inductance
Shunt capacitance thus forms a resonance level and reaches filter function .Q values height, small volume, is lost that low, to bear power reachable
100W, reliability are high, stability is good, temperature performance is good.Due to above feature, cavity body filter multi-mode structure, cavity filter are studied
The miniaturization of ripple device obtains the extensive concern of scholars.
According to investigations with understanding, disclosed prior art is as follows：
1) the separation degenerate mode of resonator typically has four kinds of methods：1.1) as seen in figure la and lb, by coupling screws come
When realizing degeneracy mode coupling, in order to avoid interaction, the electric-field intensity that its position should be located at two resonance (coupling) is maximum
Value nearby, and the region that remaining degenerate mode electric field is zero, the electric field that usual coupling screws and two polarize is into 45o, but this coupling
Conjunction mode tunable range is smaller；1.2) coupling screws as shown in figures 2 a and 2b, are put in above resonator 45° angle, equally
Degenerate mode can be separated；1.3) rectangle corner cut as best shown in figures 3 a and 3b, is cut, but this coupled modes not easy processing；1.4)
It is as shown in Figs. 4a and 4b, in resonator central fluting, same this coupled modes not easy processing.
2) nineteen fifty-one woods is that dry resonant frequency fundamental formular of the academician based on wave-guide cavity wave internal schema proposes cylindrical resonance
Multiple degenerate modes are there are in chamber, and devise the mode filter of a chamber five for being substantially reduced waveguide filter volume, are a chamber
The research of multi-mode filter lays the foundation.
3) in October, 1998, G.Lastoria et al. is in IEEE MICROWAVE AND GUIDED WAVE LETTERS hairs
Table title is " in CAD of Triple-Mode Cavities in Rectangular Waveguide " article.Author proposes
A kind of three mode structures of use metallic cavity corner cut, structure as shown in Figure 5 a, by controlling the size of corner cut that several are humorous
Pattern of shaking is moved in the passband needed for us, and its simulation result is as shown in Figure 5 b；The structure of this coupled modes is difficult to add
Work.
4) in January, 2004, L.H.Chua et al. delivers entitled " Analysis of dielectric loaded
In cubical cavity for triplemode filter design " articles, propose by the use of coaxial line as feed, such as
Shown in Fig. 6 a, using the medium cavity body filter structure of tuning screw, simulation result is as shown in Figure 6 b；This use coupling screws
Structure it is tunable scope it is fewer, there is certain deficiency.
Utility model content
The purpose of this utility model is to solve the defect of above-mentioned prior art there is provided a kind of based on waveguide feed
The triplexer of two three mode resonant cavities is shared, the triplexer has the advantages that simple in construction, small volume, handling ease, performance are good,
It can be good at meeting the requirement of Modern Communication System.
The purpose of this utility model can be reached by adopting the following technical scheme that：
The triplexer for sharing two three mode resonant cavities based on waveguide feed, including the one or three mode resonant cavity, the two or three mould
Resonator, first wave guide, second waveguide, the 3rd waveguide and the 4th waveguide；
The bottom and top of one or three mode resonant cavity have gap, and the top of the one or three mode resonant cavity leads to
Cross gap to couple with the two or three mode resonant cavity, the bottom of the one or three mode resonant cavity is coupled by gap with first wave guide；
Top, right part and the left part of two or three mode resonant cavity have gap, the two or three mode resonant cavity
Top, right part and left part are coupled by gap with second waveguide, the 3rd waveguide and the 4th waveguide respectively.
As a kind of preferred scheme, the gap of the one or the three mode resonant cavity bottom is the first gap, and the gap at top is
Second gap；
First gap is from the bottom surface of the one or three mode resonant cavity, for the rectangular configuration being obliquely installed；Described second
Gap is from the top surface of the one or three mode resonant cavity, for the rectangular configuration being obliquely installed；First gap and the second gap phase
It is parallel.
As a kind of preferred scheme, the gap at the top of the two or three mode resonant cavity is the 3rd gap, and the gap of right part is
4th gap, the gap of left part is the 5th gap；
3rd gap is that two long sides or so are set, on two short sides from the top surface of the two or three mode resonant cavity
The rectangular configuration of lower setting；4th gap from the right flank of the two or three mode resonant cavity, be two long sides or so set,
Two short sides rectangular configuration setting up and down；5th gap is two long from the left surface of the two or three mode resonant cavity
The rectangular configuration that side is setting up and down, two short sides or so are set；First gap, the second gap are on the two or three mode resonant cavity top
Projection on face is intersected with the 3rd gap, projection of the 4th gap on the two or three mode resonant cavity left surface and the 5th gap
It is perpendicular.
As a kind of preferred scheme, the first wave guide, second waveguide, the 3rd waveguide are that size is identical with the 4th waveguide
Rectangular Waveguide Structure；The first wave guide is obliquely installed, and the inclined angle of first wave guide is identical with the first gap, and with first
Gap is perpendicular, and the second waveguide and the 3rd gap are perpendicular, and the 3rd waveguide and the 4th gap are perpendicular, and the described 4th
Waveguide and the 5th gap are perpendicular.
As a kind of preferred scheme, the one or three mode resonant cavity and the two or three mode resonant cavity are rectangle cavity configuration, and
The inside dimension of one or three mode resonant cavity and the two or three mode resonant cavity is identical.
As a kind of preferred scheme, the one or three mode resonant cavity and the two or three mode resonant cavity use metal material system
Into.
As a kind of preferred scheme, the inside of the one or three mode resonant cavity and the two or three mode resonant cavity is filled with air.
The utility model has following beneficial effect relative to prior art：
1st, in triplexer of the present utility model, the top of three mode resonant cavities passes through gap and another three mode resonant cavity
Coupling, bottom passes through gap respectively again by one waveguide of slot-coupled, top, right part and the left part of another three mode resonant cavity
Couple a waveguide, transmitted energy to using the waveguide of a three mode resonant cavity bottoms inside three mode resonant cavity, by this three
Mode resonant cavity transmits energy to the inside of another three mode resonant cavity, and energy is given into top inside another three mode resonant cavity
The waveguide in portion, right part and left part, is exported by three waveguides, so that a waveguide input is realized, three waveguide outputs, Ke Yiyou
Gap control resonance, with high selectivity, high q-factor, design and process simple the characteristics of, disclosure satisfy that miniaturization communication will
Ask.
2nd, triplexer of the present utility model shows by Electromagnetic Simulation, each in frequency 2.91GHz, 3.1GHz and 3.26GHz
A passband is produced, in three passbands, each passband there are two patterns, constitute the wave filter response of second order, realize
Share the triplexer of two three mode resonant cavities.
3rd, triplexer handling ease of the present utility model, the problem of solving prior art processed complex, and it is simple in construction,
Have a wide range of application.
Brief description of the drawings
Fig. 1 a are resonator (resonator the is cuboid) structure chart for using the first separation degenerate mode method of prior art.
Fig. 1 b are resonator (resonator the is cylinder) structure chart for using the first separation degenerate mode method of prior art.
Fig. 2 a are the resonator stereogram using second of separation degenerate mode method of prior art.
Fig. 2 b are the resonator top view using second of separation degenerate mode method of prior art.
Fig. 3 a are the resonator stereogram using the third separation degenerate mode method of prior art.
Fig. 3 b are the resonator top view using the third separation degenerate mode method of prior art.
Fig. 4 a are the resonator stereogram using the 4th kind of separation degenerate mode method of prior art.
Fig. 4 b are the resonator top view using the 4th kind of separation degenerate mode method of prior art.
Fig. 5 a is in the prior art using three mode filter structure charts of metallic cavity corner cut.
Fig. 5 b is in the prior art using three mode filter simulation result figures of metallic cavity corner cut.
Fig. 6 a is in the prior art using the medium cavity body filter structure charts of tuning screw.
Fig. 6 b is in the prior art using the medium cavity body filter simulation result figures of tuning screw.
Fig. 7 is the triplexer stereogram of the utility model embodiment 1.
Fig. 8 is the triplexer front view of the utility model embodiment 1.
Fig. 9 is the triplexer left view of the utility model embodiment 1.
Figure 10 is the triplexer top view of the utility model embodiment 1.
Figure 11 is the Electromagnetic Simulation curve map of the triplexer frequency response of the utility model embodiment 1.
Wherein, the mode resonant cavities of 1- the one or three, the mode resonant cavities of 2- the two or three, 3- first wave guides, 4- second waveguides, the ripples of 5- the 3rd
Lead, the waveguides of 6- the 4th, 7- air, the gaps of 8- first, the gaps of 9- second, the gaps of 10- the 3rd, the gaps of 11- the 4th, 12- the 5th is stitched
Gap.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model
Mode not limited to this.
Embodiment 1：
As shown in Fig. 7~Figure 10, the triplexer of the present embodiment include the one or three mode resonant cavity 1, the two or three mode resonant cavity 2,
First wave guide 3, second waveguide 4, the 3rd waveguide 5 and the 4th waveguide 6；
One or three mode resonant cavity 1 and the two or three mode resonant cavity 2 are rectangle cavity configuration, and inside is filled with air 7,
And inside dimension is identical；Wherein, the bottom of the one or three mode resonant cavity 1 is provided with the first gap 8, and top is provided with the second gap 9,
The top of two or three mode resonant cavity 2 is provided with the 3rd gap 10, and right part is provided with the 4th gap 11, and left part is provided with the 5th gap
12。
The top of one or three mode resonant cavity 1 is coupled by the second gap 9 with the two or three mode resonant cavity 2, and bottom passes through
First gap 8 is coupled with first wave guide 3, and the top of the two or three mode resonant cavity 2 passes through the 3rd gap 10 and the coupling of second waveguide 4
Close, right part is coupled by the 4th gap 11 with the 3rd waveguide 5, and left part is coupled by the 5th gap 12 with the 4th waveguide 6.
First gap 8 is from the bottom surface of the one or three mode resonant cavity 1, for the rectangular configuration being obliquely installed, inclined
Angle is 30~60 degree, preferably 45 degree；Second gap 9 is from the top surface of the one or three mode resonant cavity 1, to be obliquely installed
Rectangular configuration, inclined angle be 30~60 degree, preferably 45 degree；The gap 9 of first gap 8 and second is parallel；Institute
The 3rd gap 10 is stated from the top surface of the two or three mode resonant cavity 2, be two long sides or so set, two short sides it is setting up and down
Rectangular configuration；4th gap 11 from the right flank of the two or three mode resonant cavity 2, be two long sides or so set, two
Short side rectangular configuration setting up and down；5th gap 12 is two long sides from the left surface of the two or three mode resonant cavity 2
The rectangular configuration that setting up and down, two short sides or so are set；First gap 8, the second gap 9 are in the two or three mode resonant cavity 2
Projection on top surface is intersected with the 3rd gap 10, projection of the 4th gap 11 on the left surface of the two or three mode resonant cavity 2 with
5th gap 12 is perpendicular.
The first wave guide 3, second waveguide 4, the 3rd waveguide 5 and the 4th waveguide 6 are size identical rectangular waveguide junction
Structure, first wave guide 3, second waveguide 4, the 3rd waveguide 5 and the 4th waveguide 6 can be as ports, and wherein first wave guide 3 is used as first
Port, second waveguide 4 is as second port, and the 3rd waveguide 5 is used as the 4th port, first end as the 3rd port, the 4th waveguide 6
Mouth is input port, and second port, the 3rd port and the 4th port are output port；The first wave guide 3 is obliquely installed, the
The inclined angle of one waveguide 3 is identical with the first gap 8, and perpendicular with the first gap 8, the gap of second waveguide 4 and the 3rd
10 is perpendicular, and the 3rd waveguide 5 and the 4th gap 11 are perpendicular, and the 4th waveguide 6 and the 5th gap 12 are perpendicular.
The triplexer operation principle of the present embodiment is：Energy is inputted from first wave guide 3, and first wave guide 3 passes through the first gap 8
The inside of the one or three mode resonant cavity 1 is transmitted energy to, the one or three mode resonant cavity 1 transmits energy to by the second gap 9
Pass through the 3rd gap 10, the 4th gap 11 and the 5th seam inside the inside of two or three mode resonant cavities 2, the two or three mode resonant cavity 2 respectively
Energy is given second waveguide 4, the 3rd waveguide 5 and the 4th waveguide 6,6 points of second waveguide 4, the 3rd waveguide 5 and the 4th waveguide by gap 12
Energy is not exported, it is achieved thereby that a waveguide input, the triplexer of three waveguide output.
As shown in figure 11, s11 represents first port to the Electromagnetic Simulation curve of the triplexer frequency response of the present embodiment in figure
Return loss, s21 represents first port to the positive transmission coefficient of second port, and s31 represents first port to the 3rd port
Positive transmission coefficient, s41 represents first port to the positive transmission coefficient of the 4th port, and s42 represents second port to the 4th
The reverse transfer coefficient of port, s32 represents second port to the reverse transfer coefficient of the 3rd port, and s43 represents that the 3rd port is arrived
The reverse transfer coefficient of 4th port, from the figure, it can be seen that s21 centre frequency is 2.91GHz, with a width of 22MHz, s31
Centre frequency 3.1GHz, with a width of 22MHz, s41 centre frequency is 3.26GHz, with a width of 25MHz, in these three passbands,
Each passband has two patterns, constitutes the wave filter response of second order.
In above-described embodiment, the one or three mode resonant cavity 1 and the two or three mode resonant cavity 2 are made of metal material,
Metal material can be any one of aluminium, iron, tin, copper, silver, gold and platinum, or can appoint for aluminium, iron, tin, copper, silver, gold and platinum
A kind of alloy of meaning.
In summary, in triplexer of the present utility model, the tops of three mode resonant cavities by gap and another three
Mode resonant cavity is coupled, and bottom is distinguished again by one waveguide of slot-coupled, top, right part and the left part of another three mode resonant cavity
By one waveguide of slot-coupled, transmitted energy to using the waveguide of a three mode resonant cavity bottoms in three mode resonant cavity
Portion, the inside of another three mode resonant cavity is transmitted energy to by three mode resonant cavity, by energy inside another three mode resonant cavity
Amount gives the waveguide of top, right part and left part, is exported by three waveguides, so as to realize a waveguide input, three waveguides are defeated
Go out, resonance can be controlled by gap, with high selectivity, high q-factor, design and process simple the characteristics of, disclosure satisfy that miniaturization
The requirement of communication.
It is described above, only the utility model patent preferred embodiment, but the utility model patent protection domain simultaneously
This is not limited to, any one skilled in the art is in the scope disclosed in the utility model patent, according to this
Technical scheme and its utility model design of utility model patent are subject to equivalent substitution or change, belong to the utility model patent
Protection domain.
Claims (7)
1. the triplexer for sharing two three mode resonant cavities based on waveguide feed, it is characterised in that：Including the one or three mode resonant cavity,
Two or three mode resonant cavity, first wave guide, second waveguide, the 3rd waveguide and the 4th waveguide；
The bottom and top of one or three mode resonant cavity have gap, and the top of the one or three mode resonant cavity passes through seam
Gap is coupled with the two or three mode resonant cavity, and the bottom of the one or three mode resonant cavity is coupled by gap with first wave guide；
Top, right part and the left part of two or three mode resonant cavity have a gap, the top of the two or three mode resonant cavity,
Right part and left part are coupled by gap with second waveguide, the 3rd waveguide and the 4th waveguide respectively.
2. the triplexer according to claim 1 that share two three mode resonant cavities based on waveguide feed, it is characterised in that：
The gap of one or the three mode resonant cavity bottom is the first gap, and the gap at top is the second gap；
First gap is from the bottom surface of the one or three mode resonant cavity, for the rectangular configuration being obliquely installed；Second gap
From the top surface of the one or three mode resonant cavity, for the rectangular configuration being obliquely installed；First gap and the second gap are parallel.
3. the triplexer according to claim 2 that share two three mode resonant cavities based on waveguide feed, it is characterised in that：
Gap at the top of two or three mode resonant cavity is the 3rd gap, and the gap of right part is the 4th gap, and the gap of left part is the 5th
Gap；
3rd gap is that two long sides or so set, divided on two short sides from the top surface of the two or three mode resonant cavity
The rectangular configuration put；4th gap from the right flank of the two or three mode resonant cavity, be two long sides or so set, two
Short side rectangular configuration setting up and down；5th gap is on two long sides from the left surface of the two or three mode resonant cavity
It is lower set, the rectangular configuration that two short sides or so are set；First gap, the second gap are on the two or three mode resonant cavity top surface
Projection intersect with the 3rd gap, projection of the 4th gap on the two or three mode resonant cavity left surface is mutually hung down with the 5th gap
Directly.
4. the triplexer according to claim 3 that share two three mode resonant cavities based on waveguide feed, it is characterised in that：
The first wave guide, second waveguide, the 3rd waveguide and the 4th waveguide are size identical Rectangular Waveguide Structure；The first wave
Lead and be obliquely installed, the inclined angle of first wave guide is identical with the first gap, and perpendicular with the first gap, the second waveguide with
3rd gap is perpendicular, and the 3rd waveguide and the 4th gap are perpendicular, and the 4th waveguide and the 5th gap are perpendicular.
5. the triplexer for sharing two three mode resonant cavities based on waveguide feed according to claim any one of 1-4, its
It is characterised by：One or three mode resonant cavity and the two or three mode resonant cavity are rectangle cavity configuration, and the one or three mode resonant cavity and
The inside dimension of two or three mode resonant cavity is identical.
6. the triplexer for sharing two three mode resonant cavities based on waveguide feed according to claim any one of 1-4, its
It is characterised by：One or three mode resonant cavity and the two or three mode resonant cavity are made of metal material.
7. the triplexer for sharing two three mode resonant cavities based on waveguide feed according to claim any one of 1-4, its
It is characterised by：The inside of one or three mode resonant cavity and the two or three mode resonant cavity is filled with air.
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| CN201720035773.2U CN206422193U (en) | 2017-01-12 | 2017-01-12 | The triplexer for sharing two three mode resonant cavities based on waveguide feed |
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| CN201720035773.2U CN206422193U (en) | 2017-01-12 | 2017-01-12 | The triplexer for sharing two three mode resonant cavities based on waveguide feed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654473A (en) * | 2017-01-12 | 2017-05-10 | 华南理工大学 | Triplexer sharing two three-mode resonant cavities based on waveguide feedback |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654473A (en) * | 2017-01-12 | 2017-05-10 | 华南理工大学 | Triplexer sharing two three-mode resonant cavities based on waveguide feedback |
| CN106654473B (en) * | 2017-01-12 | 2019-11-15 | 华南理工大学 | The triplexer for sharing two three mode resonant cavities based on waveguide feed |
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