CN106532205A - Bending type microwave band-pass filter - Google Patents
Bending type microwave band-pass filter Download PDFInfo
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- CN106532205A CN106532205A CN201710003387.XA CN201710003387A CN106532205A CN 106532205 A CN106532205 A CN 106532205A CN 201710003387 A CN201710003387 A CN 201710003387A CN 106532205 A CN106532205 A CN 106532205A
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- filtering
- groove
- transition
- pass filter
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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
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- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a bending type microwave band-pass filter which comprises two filtering structures in same shape, wherein two dielectric slices which are arranged in a balanced form form a filtering chamber of each filtering structure; slot line wave guide surfaces, transitional surfaces and filtering slot surfaces are symmetrically arranged on opposite surfaces of the two dielectric slices in turn along the microwave conveying direction; on the filtering slot surfaces, a plurality of filtering slots are formed in the opposite surfaces of the two dielectric slices along the direction vertical to the microwave conveying direction; the slot surfaces of the filtering slots are of trapezoid shape; on the transitional surfaces, a plurality of transitional slots are formed in the opposite surfaces of the two dielectric slices along the direction vertical to the microwave conveying direction; the slot surfaces of the transitional slots are of trapezoid shape; the ends of the filtering slot surfaces of the two filtering structures are communicated with each other. The bending type microwave band-pass filter disclosed by the invention can fully promote the constraining effect of microwave band sub-wavelength, is higher in anti-electromagnetic interference capacity and can be more effectively conformal with the substrate.
Description
Technical field
The present invention relates to a kind of artificial surface phasmon type microwave band-pass filter, more specifically, more particularly to one
Plant bending type microwave band-pass filter.
Background technology
Today's society, with the swift and violent growth of mobile comm message amount, microwave communication system requirements can produce integrated level
The faster microwave device of higher, speed, however as the continuous improvement of microwave circuit integrated level, the electromagnetism between wire and wire is made an uproar
The stability of sound severe jamming microwave device work.Have can microwave circuit using artificial surface phasmon type microwave device
There is higher anti-electromagnetic interference capability, can preferably meet the requirement of microwave communication electromagnetic compatibility of future generation.
The content of the invention
It is an object of the invention to provide a kind of bending type microwave band-pass filter, the wave filter can fully improve microwave
The constraint effect of wave band sub-wavelength, anti-electromagnetic interference capability are more preferable, and can be preferably conformal with substrate.
The technical solution used in the present invention is as follows：
A kind of bending type microwave band-pass filter, wherein, including two shape identical filter structures, described filtering knot
Structure is balanced the filtering chamber that the dieelctric sheet for arranging is formed by two panels, right successively along microwave transmission direction in the opposite face of two panels dieelctric sheet
Title is provided with line of rabbet joint guided wave face, transition face and filtering groove surface, and described filtering groove surface is microwave vertical in dieelctric sheet opposite face
Multiple filtering grooves that direction of transfer is arranged, the groove face of the filtering groove is trapezoidal, and described transition face is in dieelctric sheet phase
Multiple transition grooves that the vertical microwave transmission direction in opposite is arranged, the groove face of the transition groove is trapezoidal；Two filtering
The filtering groove surface end connection of structure.
Further, the bottom land oblique line equation of the transition groove is：
Y=v+ux
Wherein v is Linear intercept, and value is 0.1～3mm, and u is straight slope, and value is 0.1～2mm.
Further, two filter structures are in 90 ° of bent angles.
Further, multiple described filtering grooves are uniformly arranged, and the slot bottom width of the filtering groove is 0.2～
0.8mm, the width of rebate of the filtering groove is 1～3mm, and the cell body of the filtering groove is highly 1～2.5mm, adjacent two
Distance between individual filtering groove is 2～6mm.
Further, multiple described transition grooves are uniformly arranged, and the width of rebate of the transition groove is recessed equal to filtering
The width of rebate of groove, the distance and phase between the distance between two neighboring transition groove, adjacent transition groove and filtering groove
Distance between adjacent two filtering groove is identical.
Further, it is described filtering groove surface along microwave transmission direction length be 74～94mm, the filtering groove surface
The width in vertical microwave transmission direction is 8～12mm, and length of the transition face along microwave transmission direction is 20～40mm, described
Length of the line of rabbet joint guided wave face along microwave transmission direction is 6～10mm.
Further, the length in the vertical microwave transmission direction of the dieelctric sheet be 90～110mm, the thickness of the dieelctric sheet
For 0.3～0.7mm.
Further, the filtering groove and the equal mirror of transition groove in described filter structure, on dieelctric sheet described in two panels
As symmetrical.
Compared with prior art, the device have the advantages that being：
A kind of bending type microwave band-pass filter of the present invention, wherein, it is including two shape identical filter structures, described
Filter structure the filtering chamber that formed of dieelctric sheet for arranging is balanced by two panels, two panels dieelctric sheet opposite face along microwave transmission side
To line of rabbet joint guided wave face, transition face and filtering groove surface is arranged with successively, described filtering groove surface is in dieelctric sheet opposite face
Multiple filtering grooves that vertical microwave transmission direction is arranged, the groove face of the filtering groove be it is trapezoidal, described transition face be
Multiple transition grooves that the vertical microwave transmission direction of dieelctric sheet opposite face is arranged, the groove face of the transition groove is trapezoidal；Two
The filtering groove surface end connection of the filter structure.The input or output of microwave signal are realized using line of rabbet joint guided wave face, by transition
Microwave transmission to groove surface is filtered, is employed the trapezoidal filtering of new periodicity, specular in filtering groove surface by face
Groove structure, improves the constraint effect of microwave band sub-wavelength so that the anti-electromagnetic interference capability of wave filter is more excellent.This
Outward, it is in 90 degree of right angle corner structures to filter groove surface, and wave filter can be made preferably conformal with substrate.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the S parameter performance diagram of the specific embodiment of the invention；
Fig. 3 is the normal direction distribution map of the electric field of the specific embodiment of the invention；
Regulation and control schematic diagrams of the Fig. 4 for the out-of-band transmission zero point of the specific embodiment of the invention.
Specific embodiment
With reference to specific embodiment, technical scheme is described in further detail, but do not constitute it is right
Any restriction of the present invention.
With reference to shown in Fig. 1, a kind of bending type microwave band-pass filter of the present invention, wherein, including two shape identicals
Filter structure, described filter structure are balanced the filtering chamber that the dieelctric sheet 2 for arranging is formed by two panels, in the phase of two panels dieelctric sheet 2
Opposite is arranged with line of rabbet joint guided wave face 3, transition face 4 and filtering groove surface 5, described filtering groove successively along microwave transmission direction
Face 5 is the multiple filtering grooves 6 arranged in the vertical microwave transmission direction of 2 opposite face of dieelctric sheet, and the groove face of the filtering groove 6 is
Trapezoidal, described transition face 4 is the multiple transition grooves 7 arranged in the vertical microwave transmission direction of 2 opposite face of dieelctric sheet, the mistake
The groove face for crossing groove 7 is trapezoidal；5 end of the filtering groove surface connection of two filter structures.Realized using line of rabbet joint guided wave face 3 micro-
Microwave transmission is employed in filtering groove surface 5 new to groove surface 5 is filtered by the input or output of ripple signal by transition face 4
Periodicity, 6 structure of trapezoidal filtering groove of specular, improve the constraint effect of microwave band sub-wavelength so that filtering
The anti-electromagnetic interference capability of device is more excellent.Additionally, two filter structures can make wave filter more preferable in 90 ° of bent angles
It is conformal with substrate.Therefore, a kind of bending type microwave band-pass filter of the invention can be applicable to the civilian microwave of L～S-band
In communication system, with certain engineering practical value.The wave filter of the present invention can regulate and control logical using the depth of filtering groove 6
The width of band, filtering groove 6 are deeper, and passband width is narrower.
The wave filter of the present invention can be with by the physical dimension for adjusting 6 gaps of trapezoidal filtering groove 6 and its filtering groove
The free transmission range and stopband rejection characteristic of regulation and control wave filter, particularly in metal micro-strip arranging 90 degree of corner structures can make filtering
Device can be conformal with more complicated substrate structure, can also make the wiring of integrated circuit more flexible and changeable, in the electricity of Optimal Filter
The high integrated level of integrated circuit is ensure that while gas characteristic.
The bottom land oblique line equation of the transition groove 7 is：
Y=v+ux
Wherein v is Linear intercept, and value is 0.1～3mm, and u is straight slope, and value is 0.1～2mm.Transition groove 7 is adopted
Gradual change resistance technique is used, its bottom portion of groove is angled straight lines progressively structure for amplifying, and electromagnetic resistivity can be prevented to be mutated and realize and filter
The good linking of ripple groove surface 5.
Multiple described filtering grooves 6 are uniformly arranged, and the slot bottom width of the filtering groove 6 is 0.2～0.8mm, described
The width of rebate of filtering groove 6 is 1～3mm, and the cell body of the filtering groove 6 is highly 1～2.5mm, and two neighboring filtering is recessed
Distance between groove 6 is 2～6mm.Specific size calculates the size of relevant work wavelength, so as to obtain according to user's requirement
Design size.
Multiple described transition grooves 7 are uniformly arranged, and the width of rebate of the transition groove 7 is equal to the groove of filtering groove 6
Mouth width, the distance and adjacent two between the distance between two neighboring transition groove 7, adjacent transition groove 7 and filtering groove 6
Distance between individual filtering groove 6 is identical.
It is described filtering groove surface 5 along microwave transmission direction length be 74～94mm, 5 vertical microwave of the filtering groove surface
The width of direction of transfer is 8～12mm, and length of the transition face 4 along microwave transmission direction is 20～40mm, and the line of rabbet joint leads
Length of the corrugated 3 along microwave transmission direction is 6～10mm.Specific size calculates relevant work wavelength according to user's requirement
Size, the design size obtained from.
The length in 2 vertical microwave transmission direction of the dieelctric sheet is 90～110mm, the thickness of the dieelctric sheet 2 is 0.3～
0.7mm。
In described filter structure, the 7 equal specular of filtering groove 6 and transition groove on dieelctric sheet 2 described in two panels,
The constraint effect of wave filter microwave band sub-wavelength can further be improved.
Embodiment
The structure of the microwave filter of the present embodiment is identical with embodiment, and described dieelctric sheet 1 adopts dielectric constant
For 2.65 substrate, a kind of physical dimension data of bending type microwave band-pass filter each several part of the present invention is as shown in Table 1：
One microwave filter each several part physical size (unit of table：mm)
| Structure title | Size |
| Length of the line of rabbet joint guided wave face 3 along microwave transmission direction | 8 |
| Length of the transition face 4 along microwave transmission direction | 30 |
| Length of the filtering groove surface 5 along microwave transmission direction | 84 |
| The slot bottom width of filtering groove 6 | 0.5 |
| The width of rebate of filtering groove 6 | 2.0 |
| The cell body height of filtering groove 6 | 1.7 |
| Distance between two neighboring filtering groove 6 | 4.0 |
| Filtering 6 gap widths of groove | 1.5 |
| The length of 90 ° of corner metal micro-strip | 2.1 |
| The height of 90 ° of corner metal micro-strip | 5.7 |
| 2 total length of dieelctric sheet | 103 |
| 2 overall width of dieelctric sheet | 100 |
| Metal micro-strip overall width | 10 |
| Trapezoidal oblique line intercept v | 35.7 |
| Trapezoidal oblique line slope u | 0.083 |
| 2 thickness of dielectric-slab | 0.5 |
The filtering curve Jing Fdtd Methods of physical dimension data microwave filter as shown in Table 1 are calculated such as
Shown in Fig. 2, filter centre frequency is 3.81GHz, and at this, insertion loss is 2.1dB, and wave filter -3dB passbands are arrived for 2.61GHz
4.92GHz, passband internal reflection are less than -9.9dB, and ripple shake is better than 0.6dB.Physical dimension data microwave filter as shown in Table 1
Ripple device works in the normal direction distribution map of the electric field obtained during 3.0GHz as shown in figure 3, can obtain according to Fig. 3, its microwave electric field master
It is bound by around trapezoidal metal micro-strip, reveals little, effectively improve the anti-electromagnetic interference capability of the wave filter.Physics
Regulation and control of the sized data microwave filter out-of-band transmission zero point as shown in Table 1 by the 6 gap size regulation and control of trapezoidal filtering groove
Schematic diagram is as shown in figure 4, can obtain according to Fig. 4, the position of wave filter out-of-band transmission zero point, the Out-of-band rejection of wave filter is special in other words
Property, can be regulated and controled by the width in 6 gaps of filtering groove.
The foregoing is only presently preferred embodiments of the present invention, it is all made in the range of the spirit and principles in the present invention it is any
Modification, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of bending type microwave band-pass filter, it is characterised in that including two shape identical filter structures, described filter
Wave structure is balanced the filtering chamber that formed of dieelctric sheet (2) for arranging by two panels, two panels dieelctric sheet (2) opposite face along microwave transmission
Direction is arranged with line of rabbet joint guided wave face (3), transition face (4) and filtering groove surface (5) successively, and described filtering groove surface (5) is
In multiple filtering grooves (6) that the vertical microwave transmission direction of dieelctric sheet (2) opposite face is arranged, the groove face of filtering groove (6)
It is the multiple transition grooves arranged in the vertical microwave transmission direction of dieelctric sheet (2) opposite face for trapezoidal, described transition face (4)
(7), the groove face of the transition groove (7) is trapezoidal；Filtering groove surface (5) the end connection of two filter structures.
2. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that the transition groove (7)
Bottom land oblique line equation be：
Y=v+ux
Wherein v is Linear intercept, and value is 0.1～3mm, and u is straight slope, and value is 0.1～2mm.
3. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that two filter structures
Into in 90 ° of bent angles.
4. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that multiple described filtering are recessed
Groove (6) is uniformly arranged, it is described filtering groove (6) slot bottom width be 0.2～0.8mm, the width of rebate of the filtering groove (6)
For 1～3mm, the cell body of the filtering groove (6) is highly 1～2.5mm, the distance between two neighboring filtering groove (6) is 2～
6mm。
5. a kind of bending type microwave band-pass filter according to claim 2, it is characterised in that multiple described transition are recessed
Groove (7) is uniformly arranged, and the width of rebate of the transition groove (7) is equal to the width of rebate of filtering groove (6), two neighboring transition
Distance and two neighboring filtering groove (6) between the distance between groove (7), adjacent transition groove (7) and filtering groove (6)
Between distance it is identical.
6. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that the filtering groove surface
(5) length along microwave transmission direction is 74～94mm, and the width in the vertical microwave transmission direction of the filtering groove surface (5) is 8
～12mm, length of the transition face (4) along microwave transmission direction are 20～40mm, and the line of rabbet joint guided wave face (3) is along microwave biography
The length for sending direction is 6～10mm.
7. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that the dieelctric sheet (2) is hung down
The length in straight microwave transmission direction is 90～110mm, and the thickness of the dieelctric sheet (2) is 0.3～0.7mm.
8. a kind of bending type microwave band-pass filter according to claim 1, it is characterised in that in described filter structure
In, the specular of the filtering groove (6) and transition groove (7) on dieelctric sheet described in two panels (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003387.XA CN106532205A (en) | 2017-01-04 | 2017-01-04 | Bending type microwave band-pass filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003387.XA CN106532205A (en) | 2017-01-04 | 2017-01-04 | Bending type microwave band-pass filter |
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| Publication Number | Publication Date |
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| CN106532205A true CN106532205A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710003387.XA Pending CN106532205A (en) | 2017-01-04 | 2017-01-04 | Bending type microwave band-pass filter |
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| CN103197374A (en) * | 2013-03-12 | 2013-07-10 | 东南大学 | Planar two-waveband surface plasmon waveguide based on composite cycle structure |
| CN103199326A (en) * | 2013-03-12 | 2013-07-10 | 东南大学 | Surface plasmon wave separator based on composite cycle and single cycle |
| CN204257794U (en) * | 2014-11-28 | 2015-04-08 | 桂林电子科技大学 | A kind of ultra broadband artificial surface plasmon curved waveguide |
| CN105896007A (en) * | 2016-05-19 | 2016-08-24 | 六盘水师范学院 | Microwave band-pass filter |
| CN205752463U (en) * | 2016-05-24 | 2016-11-30 | 六盘水师范学院 | A kind of low pass microwave filter with trapezoidal groove structure |
| CN206322823U (en) * | 2017-01-04 | 2017-07-11 | 梧州学院 | A kind of bending type microwave band-pass filter |
-
2017
- 2017-01-04 CN CN201710003387.XA patent/CN106532205A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197374A (en) * | 2013-03-12 | 2013-07-10 | 东南大学 | Planar two-waveband surface plasmon waveguide based on composite cycle structure |
| CN103199326A (en) * | 2013-03-12 | 2013-07-10 | 东南大学 | Surface plasmon wave separator based on composite cycle and single cycle |
| CN204257794U (en) * | 2014-11-28 | 2015-04-08 | 桂林电子科技大学 | A kind of ultra broadband artificial surface plasmon curved waveguide |
| CN105896007A (en) * | 2016-05-19 | 2016-08-24 | 六盘水师范学院 | Microwave band-pass filter |
| CN205752463U (en) * | 2016-05-24 | 2016-11-30 | 六盘水师范学院 | A kind of low pass microwave filter with trapezoidal groove structure |
| CN206322823U (en) * | 2017-01-04 | 2017-07-11 | 梧州学院 | A kind of bending type microwave band-pass filter |
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| 吴超: "基于表面等离激元的窄带滤波器的设计及研究", 《中国优秀硕士学位论文全文数据库》 * |
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Application publication date: 20170322 |