CN109509948A - A kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization - Google Patents
A kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization Download PDFInfo
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- CN109509948A CN109509948A CN201811632188.6A CN201811632188A CN109509948A CN 109509948 A CN109509948 A CN 109509948A CN 201811632188 A CN201811632188 A CN 201811632188A CN 109509948 A CN109509948 A CN 109509948A
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
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- 238000003801 milling Methods 0.000 description 3
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- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
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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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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Abstract
The present invention is a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization, including upper block structure and flowering structure block, upper block structure and flowering structure block are detachably connected, the face H unilateral side slotted waveguide structure is provided between upper block structure and flowering structure block, the face H unilateral side slotted waveguide structure includes source input waveguide, load output waveguide and the identical resonant cavity of four structure sizes, four resonant cavities are along the face H fold arrangement, magnetic coupling is used between adjacent resonators, is electrically coupled between non-adjacent resonators using intersection.The processing of CNC technique can be used in this kind of high frequency filter, and gold-plated in outer layer.The work of this kind of filter is in 220GHz frequency range, the filter with low insertion loss characteristic with -0.6dB, and there are apparent two zero points close to passband to have quasi- ellipse response so that the edge selection characteristic of the filter is very good with outer.Applied to terahertz detection system, it can be achieved that the continuous spectrum astronomical observation of 10% bandwidth of 220GHz frequency range.
Description
Technical field
The present invention is to be related to Terahertz frequency range waveguide filter technical field, specifically a kind of to be easy to what CNC was realized
The quasi- elliptical waveguide filter of Terahertz.
Background technique
Terahertz frequency range refers to electromagnetic wave of the frequency range between 0.1~10THz, the characteristic spectrum comprising a large amount of interstellar molecules
Line is unique frequency range of radio astronomy observational study, for understanding that cosmicality and evolution have very important significance.
Filter has frequency selective characteristic, is one of passive device important in detection system, can filter out work belt
Interfering frequency and ambient noise outside width, advantage distillation characteristic information simultaneously improve system performance.In Terahertz coherence detector,
Filter can inhibit the interference of image frequency；In Terahertz non-coherent detection device, radio-frequency filter is even more essential pass
Key elements when being especially used to continuum spectra observations, define frequency range, abandon clutter and be very important.
Waveguide has the metal structure being closed completely, and can be avoided electromagnetic radiative losses and dielectric loss, while having low
Loss, the characteristics such as power capacity is big, easy to install, fixed are transmission line modes preferred in Terahertz circuit system at this stage.But
Since Terahertz wavelength is shorter, physical size and its preparation precision become the bottleneck for restricting waveguide filter development.In recent years with
The fast development of micro- technology, THz wave waveguide filter become the research object of domestic and international hot topic, be based on different knots
Structure, different process THz wave waveguide filter largely reported.
The direct coupling type filter that THz wave waveguide filter mainly uses chebyshev function to approach at present, structure letter
It is single, and realized using the micro- technique of high-precision.However the frequency response transition of this kind of filter is slow, Out-of-band rejection is poor, to
Better frequency selective characteristic is obtained, is only realized by increasing the order of filter, this will lead to the volume of filter again
Increase, the disadvantages of increasing is lost.And connect for the measurement of practical micro- technique waveguiding structure and with other waveguide ports in system
It connects, accurately fixes the structures such as device, the face H- elbow and need to design and process, these additional structures will lead to the increasing of loss
Greatly, the loss characteristic of the THz wave waveguide filter prepared at this stage using micro- technique is not generally outstanding.And use traditional milling
The waveguide filter of mechanical (CNC) processing can obtain the Insertion Loss characteristic of comparative superiority because being not necessarily to any other transformational structure, and
Convenient for being used in waveguiding structure system, but since its precision is limited, so that it is restricted in the application of Terahertz frequency range.Always
It, the overall performance of THz wave waveguide filter is horizontal obviously not as good as the similar filter of low-frequency range at this stage, embodies a concentrated expression of
The important indicators such as in-band insertion loss, return loss and Out-of-band rejection amplitude.
Therefore, it is necessary to the window band 220GHz important in Terahertz astronomical observation, propose and design to be suitable for tradition milling
Cut mechanical (CNC) processing, structure is simple, size is insensitive and has the waveguide filter of quasi- ellipse response.
Summary of the invention
The technical problem to be solved in the present invention is to provide it is a kind of be easy to CNC realization the quasi- elliptical waveguide filter of Terahertz,
This kind of filter work has the filter with low insertion loss characteristic of -0.6dB in 220GHz frequency range, and with outer close there are apparent two
The zero point of passband has quasi- ellipse response so that the edge selection characteristic of the filter is very good.Applied to terahertz detection
System, it can be achieved that 10% bandwidth of 220GHz frequency range continuous spectrum astronomical observation.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization, it is characterized in that: including upper block structure and flowering structure
Block, the upper block structure and flowering structure block are detachably connected, and the face H list is provided between the upper block structure and flowering structure block
Side slotted waveguide structure, the face the H unilateral side slotted waveguide structure include source input waveguide, load output waveguide and four structures
Identical resonant cavity, four resonant cavities use magnetic coupling, non-adjacent resonators between the face H infolding stack arrangement, adjacent resonators
Between using intersect be electrically coupled.
The identical resonant cavity of four structures is respectively the first resonant cavity, the second resonant cavity, third resonant cavity, the 4th
Resonant cavity, four resonant cavities are sequentially connected to, and described source input waveguide one end is connected to the first resonant cavity, and the other end and the external world are even
Logical, described load output waveguide one end is connected to the 4th resonant cavity, and the other end is in communication with the outside, wherein source input waveguide and
Between first resonant cavity, between the first resonant cavity and the second resonant cavity, between the second resonant cavity and third resonant cavity, third resonance
Magnetic coupling, first resonant cavity are all made of between chamber and the 4th resonant cavity, between the 4th resonant cavity and load output waveguide
And the 4th be electrically coupled using intersecting between resonant cavity.
The magnetic coupling is used is arranged the face H- inductive iris between neighboring chambers, and the intersection, which is electrically coupled, to be used
The face E- unilateral side capacitive diaphragm is set between two cavitys.
The resonant cavity uses TE101The right angle of mould wave-guide cavity wave, the resonant cavity carries out round corner machining, institute
The intracavitary right angle of the source input waveguide and load output waveguide stated carries out round corner machining.
Source input waveguide, load output waveguide and four resonant cavities are arranged at the upper surface of flowering structure block, the
Cavity wall upper surface between one resonant cavity and the 4th resonant cavity is provided with unilateral diaphragm slot, and the lower surface of the upper block structure adds
Work has sealing plane, and when the upper block structure and flowering structure block are combined closely, sealing plane and source input waveguide, load are exported
The cavity wall end face of waveguide and four resonant cavities fits closely.
The upper block structure and flowering structure block is provided with several groups closed thread hole, is located at block structure and lower knot
On building block, the corresponding closed thread pore size in position is identical and is coaxially disposed, the axial direction in the closed thread hole with it is close
Envelope plane is mutually perpendicular to.
Upper block structure and flowering structure block where the end face that the source input waveguide, load output waveguide are in communication with the outside
Several dowel holes and flange threaded hole are provided on the side wall of two sides, for being connected with other waveguiding structures or system,
The dowel hole and flange threaded hole surrounds source input waveguide or load output waveguide end face annular is uniformly distributed.
The flowering structure block upper surface is provided with two groups of projection cube structures, and the corresponding position of upper block structure lower surface is provided with
Two groups of groove structures to match with projection cube structure, two groups of projection cube structures are separately positioned on the face H unilateral side slotted waveguide knot
The axial direction of structure two sides, the projection cube structure is parallel with the extending direction of the face H unilateral side slotted waveguide structure.
The flowering structure block upper surface and upper block structure lower surface are provided with sealing film trap, and the sealing film trap is set
It sets on the outside of the slotted waveguide structure cavity wall edge of the face H unilateral side and on the outside of sealing plane, the sealing film trap is for improving the face H
The compactness of unilateral slotted waveguide structure cavity wall end face and sealing plane, the flowering structure block upper surface and upper block structure following table
Face relative position is provided with closure alignment pin nail hole, and dismountable closure alignment is equipped in the closure alignment pin nail hole
Pin, what closure alignment pin was used to reduce flowering structure block and upper block structure is coupled error.
The upper block structure and flowering structure block outer surface is provided with Gold plated Layer.
This kind be easy to CNC realization the quasi- elliptical waveguide filter of Terahertz can the beneficial effects are as follows:
First, the terahertz filter of the design uses cross coupling structure, quasi- ellipse response is obtained, with outer presence
Apparent two zero points close to passband, skirt selectivity are good.
Second, the terahertz filter of the design obtains low loss performance in 10% passband, and only -0.6dB is lost.
Third, the face H- proposed by the present invention unilateral side slotted waveguide structure processing method are highly suitable for most of at this stage
The realization of H- surface wave waveguide filter can avoid the alignment issues in slotted waveguide process.
4th, the present invention points out that CNC fabrication error is less than ± 10 μm, and the roughness after craft of gilding is in 1 δ or so (δ
For 220GHz gold surface penetration depth), the Q value of 220GHz resonant cavity has studied current CNC technique 880 or so for the first time
To the relevance grade of WR-4 frequency band filter processing, certain basis is provided for the processing of the subsequent frequency band filter.
5th, both ends of the present invention are provided with flange threaded hole, can be fixedly connected, can directly apply with the bump joint of standard
In 220GHz frequency range continuum spectra observations system, without other conversion, transition structure, can be realized with the antenna in system,
The connection of the modules such as frequency mixer.
Detailed description of the invention
Fig. 1 is a kind of structure principle chart for the quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization of the present invention.
Fig. 2 is a kind of structural principle for the quasi- elliptical waveguide filter flowering structure block of Terahertz for being easy to CNC realization of the present invention
Figure.
Fig. 3 is the structural principle of block structure on a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization of the present invention
Figure.
Fig. 4 is a kind of quasi- face elliptical waveguide filter H unilateral side slotted waveguide structure of Terahertz for being easy to CNC realization of the present invention
Structure principle chart.
Fig. 5 is a kind of mono- parameter testing figure of S for the quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization of the present invention.
Fig. 6 is a kind of error analysis figure for the quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization of the present invention.
Fig. 7 is a kind of surface roughness analysis figure for the quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization of the present invention.
Figure of description mark: 1, upper block structure；2, flowering structure block；3, the face H unilateral side slotted waveguide structure；4, closed thread
Hole；5, dowel hole；6, flange threaded hole；7, it is closed alignment pin nail hole；8, film trap is sealed；9, projection cube structure；10, groove knot
Structure；11, source input waveguide；12, output waveguide is loaded；13, the first resonant cavity；14, the second resonant cavity；15, third resonant cavity；
16, the 4th resonant cavity；17, unilateral diaphragm slot；18, sealing plane.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described.
Filter described herein processes WR-4 frequency band filter using current CNC technique, makes the filter
Work is in 220GHz frequency range, the filter with low insertion loss characteristic with -0.6dB, and with outer there are apparent two zero points close to passband,
So that the edge selection characteristic of the filter is very good, that is, realize quasi- ellipse response.Applied to terahertz detection system, it can be achieved that
The continuous spectrum astronomical observation of 10% bandwidth of 220GHz frequency range.
Specific structure is as follows:
As shown in Figures 1 to 4, a kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization, it is characterized in that: including
Upper block structure 1 and flowering structure block 2, the upper block structure 1 and flowering structure block 2 are detachably connected, and the upper block structure 1 is under
The face H unilateral side slotted waveguide structure 3 is provided between block structure 2, the face the H unilateral side slotted waveguide structure 3 includes source incoming wave
11, load output waveguide 12 and the identical resonant cavity of four structures are led, four resonant cavities are in the face H infolding stack arrangement, adjacent resonance
Magnetic coupling is used between chamber, is electrically coupled between non-adjacent resonators using intersection.
In the present embodiment, the identical resonant cavity of four structures is respectively that the first resonant cavity 13, the second resonant cavity 14, third are humorous
Shake chamber 15, the 4th resonant cavity 16, and four resonant cavities are sequentially connected to, and described 11 one end of source input waveguide and the first resonant cavity 13 connect
Logical, the other end is in communication with the outside, and described 12 one end of load output waveguide is connected to the 4th resonant cavity 16, and the other end and the external world are even
It is logical, wherein between source input waveguide 11 and the first resonant cavity 13, between the first resonant cavity 13 and the second resonant cavity 14, it is second humorous
Shake between chamber 14 and third resonant cavity 15, between third resonant cavity 15 and the 4th resonant cavity 16, the 4th resonant cavity 16 and load it is defeated
Magnetic coupling is all made of between waveguide 12 out, is electrically coupled between first resonant cavity 13 and the 4th resonant cavity 16 using intersection.
In the present embodiment, four resonant cavities are in the specific distributed architecture of the face H infolding stack arrangement are as follows: four resonant cavities are same flat
In two rows of two column square arrays distributions in face.
In the present embodiment, magnetic coupling is used is arranged the face H- inductive iris between neighboring chambers, and the intersection is electrically coupled
Using the setting face the E- unilateral side capacitive diaphragm between two cavitys.
By the fold arrangement of four resonant cavities, make the first resonant cavity 13 and the adjacent and shared cavity wall of the 4th resonant cavity 16,
And then realize the cross-coupling between non-adjacent resonators, realize the precipitous quasi- ellipse response of sideband.
In the present embodiment, resonant cavity uses TE101Mould wave-guide cavity wave, the right angle of the resonant cavity carry out rounded corner and add
The intracavitary right angle of work, the source input waveguide 11 and load output waveguide 12 carries out round corner machining.
Resonant cavity can significantly reduce processing complexity using TE101- mould wave-guide cavity wave, while in the application in filter
The equal rounded corner of right angle in each cavity, the bit size being bonded in CNC technique are easy to process.
In the present embodiment, source input waveguide 11, load output waveguide 12 and four resonant cavities are arranged at flowering structure block 2
Upper surface, the cavity wall upper surface between the first resonant cavity 13 and the 4th resonant cavity 16 are provided with unilateral diaphragm slot 17, and described is upper
The lower surface of block structure 1 is machined with sealing plane 18, when the upper block structure 1 and flowering structure block 2 are combined closely, sealing plane
18 fit closely with source input waveguide 11, load output waveguide 12 and the cavity wall end faces of four resonant cavities.
The unilateral diaphragm slot 17 of cavity wall upper surface setting between first resonant cavity 13 and the 4th resonant cavity 16 can pass through milling
Knife directly mills out, and for placing the face E- unilateral side capacitive diaphragm, realizes the intersection between the first resonant cavity 13 and the 4th resonant cavity 16
It is electrically coupled.Slotted waveguide structure 3 upper surface in the face H unilateral side removes at unilateral diaphragm slot 17, and height is identical everywhere for remaining, when upper and lower
When block structure is closed, makes to process groove body and sealing plane 18 in 2 upper surface of flowering structure block and cooperatively form cavity.
In the present embodiment, upper block structure 1 and flowering structure block 2 are provided with several groups closed thread hole 4, are located at structure
On block 1 and flowering structure block 2, corresponding 4 size of closed thread hole in position is identical and is coaxially disposed, the closed thread hole
4 axial direction is mutually perpendicular to sealing plane 18.
Upper block structure 1 and flowering structure block 2 pass through threaded hole by bolt and realize close connection.
Upper block structure 1 in the present embodiment, where the end face that source input waveguide 11, load output waveguide 12 are in communication with the outside
Several dowel holes 5 and flange threaded hole 6, the dowel hole 5 and method are provided with on 2 two sides side wall of flowering structure block
Blue threaded hole 6 is uniformly distributed around source input waveguide 11 or load 12 end face annular of output waveguide.
Dowel hole 5 and flange threaded hole 6 for being connected with other waveguiding structures or system, wherein flange threaded hole
6 setting makes upper and lower block structure and connection bolt and standard connection flanged joint can be used, and dowel hole 5 is then for realizing even
Accurate contraposition when connecing.
In the present embodiment, 2 upper surface of flowering structure block is provided with two groups of projection cube structures 9, the correspondence position of upper 1 lower surface of block structure
It installs and is equipped with two groups of groove structures to match with projection cube structure 9 10, two groups of projection cube structures 9 are separately positioned on the face H list
3 two sides of side slotted waveguide structure, the axial direction of the projection cube structure 9 and the extending direction of the face H unilateral side slotted waveguide structure 3 are flat
Row.
The setting of position reciprocal correspondence, the identical projection cube structure 9 of size and groove structure 10 on the one hand can be to upper structure
The connection of block 1 and flowering structure block 2 is limited, on the other hand, when flange threaded hole 6 or dowel hole 5 are located in upper block structure 1
When with the stitching portion of flowering structure block 2, projection cube structure 9 can be used for accommodating flange threaded hole 6 or dowel hole 5.
In the present embodiment, 2 upper surface of flowering structure block and 1 lower surface of upper block structure are provided with sealing film trap 8, and described is close
Mounting slot 8 is arranged on the outside of 3 cavity wall edge of the face H unilateral side slotted waveguide structure and 18 outside of sealing plane, the diaphragm seal
Slot 8 is used to improve the compactness of 3 cavity wall end face and sealing plane 18 of the face H unilateral side slotted waveguide structure, on the flowering structure block 2
Surface and 1 lower surface relative position of upper block structure, which are provided with, is closed alignment pin nail hole 7, in the closure alignment pin nail hole 7
Dismountable closure alignment pin is installed, what closure alignment pin was used to reduce flowering structure block 2 and upper block structure 1 is coupled mistake
Difference.
Film trap 8 is sealed by the contact area of reduction metal flat, is capable of the elimination of maximum possible due to mismachining tolerance shape
At gap, further increase the leakproofness of 3 two sides of the face H unilateral side slotted waveguide structure.
Further closure alignment pin nail hole 7 can be set in sealing film trap 8, realize upper structure by closure alignment pin
Accurate contraposition when the closure of block 1 and flowering structure block 2.
In the present embodiment, upper block structure 1 and 2 outer surface of flowering structure block are provided with Gold plated Layer.
Upper block structure 1 and flowering structure block 2 are all made of aluminium as matrix, are milled out on aluminium block entirely by traditional CNC technology
Portion's structure forms final products after the completion using craft of gilding, the roughness after craft of gilding in 1 δ or so,
The Q value of 220GHz resonant cavity is 880 or so.It can satisfy the relevance grade to the processing of WR-4 frequency band filter.
Loss can be further decreased after gold-plated, forms the metallization of wave guide wall, there is good conductivity, and reduce
Surface roughness, as shown in fig. 6, the size insensitivity of this kind of filter construction can be by using HFSS to the waveguide filter
Verified, in Fig. 6 can be high-visible, size variation, quasi- ellipse response in ± 10 μ ms is high-visible always.
As shown in fig. 7, curve shown in Fig. 7 shows surface roughness to Insertion Loss at 220GHz and resonator q characteristic
It influences, δ is the penetration depth at 220GHz frequency point.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (10)
1. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization, it is characterized in that: including upper block structure (1) He Xiajie
Building block (2), the upper block structure (1) and flowering structure block (2) are detachably connected, the upper block structure (1) and flowering structure block
(2) face H unilateral side slotted waveguide structure (3) is provided between, the face the H unilateral side slotted waveguide structure (3) includes source incoming wave
Lead (11), load output waveguide (12) and the identical resonant cavity of four structures, four resonant cavities are adjacent in the face H infolding stack arrangement
Magnetic coupling is used between resonant cavity, is electrically coupled between non-adjacent resonators using intersection.
2. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 1, it is characterised in that:
The identical resonant cavity of four structures be respectively the first resonant cavity (13), the second resonant cavity (14), third resonant cavity (15),
4th resonant cavity (16), four resonant cavities are sequentially connected to, and described source input waveguide (11) one end and the first resonant cavity (13) are even
Logical, the other end is in communication with the outside, and described load output waveguide (12) one end be connected to the 4th resonant cavity (16), the other end with outside
Boundary's connection, wherein between source input waveguide (11) and the first resonant cavity (13), the first resonant cavity (13) and the second resonant cavity (14)
Between, between the second resonant cavity (14) and third resonant cavity (15), between third resonant cavity (15) and the 4th resonant cavity (16),
Magnetic coupling, first resonant cavity (13) and the 4th resonance are all made of between four resonant cavities (16) and load output waveguide (12)
It is electrically coupled between chamber (16) using intersection.
3. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 2, it is characterised in that:
The magnetic coupling use between neighboring chambers be arranged the face H- inductive iris, the intersection be electrically coupled using two cavitys it
Between be arranged the face E- unilateral side capacitive diaphragm.
4. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 3, it is characterised in that:
The resonant cavity uses TE101The right angle of mould wave-guide cavity wave, the resonant cavity carries out round corner machining, and the source is defeated
Enter waveguide (11) and loads the intracavitary right angle progress round corner machining of output waveguide (12).
5. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 3, it is characterised in that:
Source input waveguide (11), load output waveguide (12) and four resonant cavities are arranged at the upper surface of flowering structure block (2),
Cavity wall upper surface between first resonant cavity (13) and the 4th resonant cavity (16) is provided with unilateral diaphragm slot (17), the upper knot
The lower surface of building block (1) is machined with sealing plane (18), close when the upper block structure (1) and flowering structure block (2) are combined closely
Envelope plane (18) and the cavity wall end face of source input waveguide (11), load output waveguide (12) and four resonant cavities fit closely.
6. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 5, it is characterised in that:
The upper block structure (1) and flowering structure block (2) is provided with several groups closed thread hole (4), be located at block structure (1) and
On flowering structure block (2), corresponding closed thread hole (4) size in position is identical and is coaxially disposed, the closed thread hole
(4) axial direction is mutually perpendicular to sealing plane (18).
7. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 5, it is characterised in that:
Upper block structure (1) He Xiajie where the end face that the source input waveguide (11), load output waveguide (12) are in communication with the outside
It is provided with several dowel holes (5) and flange threaded hole (6) on the side wall of building block (2) two sides, is used for and other waveguiding structures
Or system is connected, the dowel hole (5) and flange threaded hole (6) are around source input waveguide (11) or load output wave
(12) end face annular is led to be uniformly distributed.
8. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 7, it is characterised in that:
Described flowering structure block (2) upper surface is provided with two groups of projection cube structures (9), the corresponding position setting of upper block structure (1) lower surface
There are two groups of groove structures (10) to match with projection cube structure (9), two groups of projection cube structures (9) are separately positioned on the face H list
Side slotted waveguide structure (3) two sides, the axial direction of the projection cube structure (9) and the extension side of the face H unilateral side slotted waveguide structure (3)
To parallel.
9. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 8, it is characterised in that:
Flowering structure block (2) upper surface and upper block structure (1) lower surface is provided with sealing film trap (8), the sealing film trap
(8) setting is on the outside of the face H unilateral side slotted waveguide structure (3) cavity wall edge and on the outside of sealing plane (18), the diaphragm seal
Slot (8) is used to improve the compactness of the face H unilateral side slotted waveguide structure (3) cavity wall end face and sealing plane (18), the lower knot
Building block (2) upper surface and upper block structure (1) lower surface relative position are provided with closure alignment pin nail hole (7), the closure
Dismountable closure alignment pin is installed, closure alignment pin is for reducing flowering structure block (2) and upper structure in alignment pin nail hole (7)
Block (1) is coupled error.
10. a kind of quasi- elliptical waveguide filter of Terahertz for being easy to CNC realization according to claim 5, it is characterised in that:
The upper block structure (1) and flowering structure block (2) outer surface is provided with Gold plated Layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811632188.6A CN109509948A (en) | 2018-12-28 | 2018-12-28 | A kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization |
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| CN201811632188.6A CN109509948A (en) | 2018-12-28 | 2018-12-28 | A kind of quasi- elliptical waveguide filter of Terahertz being easy to CNC realization |
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| CN110994089A (en) * | 2019-11-29 | 2020-04-10 | 常州市瑞得通讯科技有限公司 | Folding structure adjustable window dielectric filter |
| CN113823886A (en) * | 2021-09-13 | 2021-12-21 | 南京信息工程大学 | Broadband duplexer suitable for full W wave band |
| CN115313003A (en) * | 2022-07-18 | 2022-11-08 | 电子科技大学长三角研究院(湖州) | Novel easily-machined terahertz dual-frequency band-pass filter with near-pass band |
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| CN110994089A (en) * | 2019-11-29 | 2020-04-10 | 常州市瑞得通讯科技有限公司 | Folding structure adjustable window dielectric filter |
| CN113823886A (en) * | 2021-09-13 | 2021-12-21 | 南京信息工程大学 | Broadband duplexer suitable for full W wave band |
| CN115313003A (en) * | 2022-07-18 | 2022-11-08 | 电子科技大学长三角研究院(湖州) | Novel easily-machined terahertz dual-frequency band-pass filter with near-pass band |
| CN115313003B (en) * | 2022-07-18 | 2024-03-15 | 电子科技大学长三角研究院(湖州) | Novel easy-to-process terahertz dual-band pass filter with adjacent pass band |
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