CN109301411B - A kind of multiband waveguide filter based on Meta Materials technology - Google Patents
A kind of multiband waveguide filter based on Meta Materials technology Download PDFInfo
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- CN109301411B CN109301411B CN201811237585.3A CN201811237585A CN109301411B CN 109301411 B CN109301411 B CN 109301411B CN 201811237585 A CN201811237585 A CN 201811237585A CN 109301411 B CN109301411 B CN 109301411B
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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
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Abstract
The present invention discloses a kind of multiband waveguide filter based on Meta Materials technology, including rectangular waveguide, the first metal column and the second metal column, and the both ends of the rectangular waveguide are provided with the input port and the output port of opening；First metal column and second metal column are arranged in the rectangular waveguide bottom, and are set between the input port and the output port；First metal column and second metal column are in periodic arrangement, and are arranged alternately along the longitudinal direction of the rectangular waveguide；The present invention is based on the multiband waveguide filters of Meta Materials technology to realize filter function using Meta Materials technology, it is simple and compact for structure, design process is simple, the complicated design of multiband filter equivalent circuit and its microwave circuit is not needed to realize, it is small in size, it is light-weight, miniaturization is realized convenient for electronic system.
Description
Technical field
The present invention relates to multiband technical field of filtering, and in particular to a kind of multiband waveguide filter based on Meta Materials technology
Wave device.
Background technique
With the continuous development of microwave technology, radio system and equipment increasing fast, electromagnetic environment present increasingly complicated
The situation of change, from disturbing, the problems such as electromagnetism mutual interference between electronic system, gradually increases for electromagnetism inside electronic system.In particular, by
It is limited to the space of the payload platforms such as such as automobile, naval vessel, aircraft and satellite, it is multiple to work in different frequency range, there are different function
The electronic system of energy is often worked at the same time in a narrow space, this requires electronic system that can effectively inhibit multiple frequency ranges
Electromagnetic interference, more stringent requirements are proposed for the Anti-interference Design of electron system.
It is a kind of method for effectively improving electronic system interference free performance that filter is introduced in electronic system.To make electronics
System can inhibit the electromagnetic interference of multiple frequency ranges, it is desirable that filter has multiband filter capacity.Existing filter is most
Realize that filter function can be achieved in filter effect, various forms of microwave transmission lines using equivalent circuit design.Common is micro-
Wave transmission line has microstrip line, strip line and metal waveguide etc..
But the equivalent circuit design in existing filter is complex, with the continuous improvement of working frequency range, dielectric loss
More increase, while influencing the Miniaturization Design of electronic system.
In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of based on Meta Materials technology
Multiband waveguide filter, including rectangular waveguide, the first metal column and the second metal column, the both ends of the rectangular waveguide are provided with
The input port and the output port of opening；First metal column and second metal column are arranged in the rectangle
Waveguide bottom, and be set between the input port and the output port；First metal column and second metal
Column is in periodic arrangement, and is arranged alternately along the longitudinal direction of the rectangular waveguide.
Preferably, be provided with several translots and transverse bar between the input port and the output port, the translot and
The transverse bar is uniformly arranged alternately in the rectangular waveguide bottom；Several first metals are provided in each translot
Column is provided with several second metal columns on each transverse bar；And first metal column etc. in the same translot
Away from setting；Second metal column on the same transverse bar is placed equidistant with.
Preferably, first metal column is arranged at the translot position of center line, the second metal column setting exists
At the transverse bar position of center line.
Preferably, being provided with metal inner surface, first gold medal at the input port and the output port position
Belong to the first upper surface of column, the second upper surface of second metal column and the metal inner surface and be in same plane, thus shape
At discontinuous metal covering.
Preferably, the cross section of first metal column, second metal column is square.
Preferably, the setting parameter of the multiband waveguide filter based on Meta Materials technology include working frequency range, it is low
Frequency inhibits frequency range and two or more high-frequency suppressing frequency range；Inhibit highest frequency in frequency range according to the working band and the low frequency
Determine the cross sectional dimensions of the rectangular waveguide；First metal column and described second are determined according to the high-frequency suppressing frequency range
The size of metal column.
Preferably, the size selection range of the rectangular waveguide is；
0.5 λ≤a≤λ, 0 λ of < b≤0.5
Wherein, λ is the operating frequency wavelength of the working frequency range；A is the length dimension of the rectangular waveguide cross section；b
For the height dimension of the rectangular waveguide cross section.
Preferably, the size of the rectangular waveguide need to meet condition；
a≤0.5λstop1H
Wherein, λstop1HInhibit the wavelength of highest frequency in frequency range for low frequency, a is the length of the rectangular waveguide cross section
Size.
Preferably, the high-frequency suppressing frequency range includes the first high frequency stopband and the second high frequency stopband, the first high frequency resistance
The frequency of band is less than the frequency of the second high frequency stopband, and the height dimension of first metal column is the first high frequency stopband
The quarter-wave of centre frequency；The height dimension of second metal column is the four of the second high frequency stopband center frequency
/ mono- wavelength.
Compared with the prior art the beneficial effects of the present invention are: 1, the present invention is based on the multiband waveguides of Meta Materials technology
Filter realizes filter function using Meta Materials technology, and simple and compact for structure, design process is simple, does not need complicated multifrequency
The design of section filter equivalent circuit and its microwave circuit are realized, small in size, light-weight, realize miniaturization convenient for electronic system；2,
The present invention realizes the inhibition of outer three frequency ranges of working band, shows as the high-pass filtering an of low-frequency range and the band resistance of two high bands
Filtering inhibits the degree of suppression of frequency range up to 40dB or more while low-loss transmission electromagnetic wave on working frequency range to three；
3, it is all-metal structure the present invention is based on the multiband waveguide filter of Meta Materials technology, processing technology is mature, and high reliablity is answered
It is wide with range.
Detailed description of the invention
Fig. 1 is that the present invention is based on the three-dimensional structure diagrams of the multiband waveguide filter of Meta Materials technology；
Fig. 2 is that the present invention is based on the top cross-sectional views of the multiband waveguide filter of Meta Materials technology；
Fig. 3 is that the present invention is based on the lateral sectional views of the multiband waveguide filter of Meta Materials technology；
Fig. 4 is that the present invention is based on the imitative of the one middle width strip transmission characteristic of multiband waveguide filter embodiment of Meta Materials technology
True result figure.
Digital representation in figure:
1- rectangular waveguide；The first metal column of 2-；The second metal column of 3-；The first upper surface 4-；The second upper surface 5-；The port 6-
Inner wall；7- input port；8- output port；The discontinuous metal covering of 9-；10- upper metal inner wall；11- translot；12- transverse bar.
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
As shown in Figure 1, Figure 2, Figure 3 shows, Fig. 1 is the solid knot the present invention is based on the multiband waveguide filter of Meta Materials technology
Composition；Fig. 2 is that the present invention is based on the top cross-sectional views of the multiband waveguide filter of Meta Materials technology；Fig. 3 be the present invention is based on
The lateral sectional view of the multiband waveguide filter of Meta Materials technology.
The multiband waveguide filter based on Meta Materials technology includes rectangular waveguide 1 and is alternately distributed in periodical
The first metal column 2 and the second metal column 3 in 1 bottom of rectangular waveguide.The rectangular waveguide 1 is provided with 7 He of input port
Output port 8, the input port 7 and the output port 8 are opening setting；Electronic system is connect by the input port 7
Enter and pass through the output port 8 to pick out.
Several translots 11 and transverse bar 12,11 He of translot are provided between the input port 7 and the output port 8
The transverse bar 12 is uniformly arranged alternately in 1 bottom of rectangular waveguide.Several described first are provided in each translot 11
Metal column 2 is provided with several second metal columns 3 on each transverse bar 12；And described in the same translot 11
One metal column 2 is placed equidistant with；Second metal column 3 on the same transverse bar 12 is placed equidistant with.First metal column 2 is set
It sets at 11 position of center line of translot, second metal column 3 is arranged at 12 position of center line of transverse bar, i.e., described
First metal column 2 is equidistant to the 11 two edges line of translot, and second metal column 3 is equidistant to the 12 two edges line of transverse bar；
To realize that first metal column 2 and the periodicity of second metal column 3 are alternately distributed.
The length dimension of the rectangular waveguide cross section is a, height dimension b.The cross section of first metal column 2 is
Square, the cross section side length are W1, and the height dimension of first metal column 2 is h1；Between first metal column 2
Periodic intervals, i.e., described 11 width dimensions of translot are P1.The cross section of second metal column 3 is square, described transversal
Face side length is W2, and the height dimension of second metal column 3 is h2；Periodic intervals between second metal column 3, i.e. institute
Stating 12 width dimensions of transverse bar is P2.
Port inner wall 6, first metal column 2 are provided at 8 position of the input port 7 and the output port
The first upper surface 4, second metal column 3 the second upper surface 5 and the port inner wall 6 be in same plane, thus shape
At discontinuous metal covering 9.
The setting parameter of multiband waveguide filter of the present invention based on Meta Materials technology generally comprise working frequency range,
Low frequency inhibits frequency range and two or more high-frequency suppressing frequency range.
The selection of 1 cross sectional dimensions of rectangular waveguide inhibits frequency range related to the working frequency range, the low frequency.It is described
The selection of dimension of first metal column 2 and second metal column 3 is related to the high-frequency suppressing frequency range.
When specific design, need to provide technical indicator, usually working frequency range, AF panel frequency range and degree of suppression are wanted
It asks, according to technical indicator, carries out corresponding multiband waveguide filter design.
Upper metal wall, left and right metallic walls and the discontinuous metal covering 9 of the rectangular waveguide 1 are constituted to be cut with rectangle
The electromagnetic transmission space in face.In the working band, the discontinuous metal covering 9 shows as approximate ideal electric conductor, entirely
The property in the electromagnetic transmission space is similar to traditional rectangular waveguide, can be with high efficiency of transmission electromagnetic wave；Press down in the low frequency
Frequency band processed, the discontinuous metal covering 9 still behave as approximate ideal electric conductor, the property in the entire electromagnetic transmission space
It is similar to traditional rectangular waveguide, but at this point, interference electromagnetic wave frequency range be located at rectangular waveguide by frequency hereinafter, utilization
The high-pass filtering characteristic of rectangular waveguide is realized and carries out inhibition work to the low-frequency disturbance electromagnetic wave in the low frequency rejection band
With；In a high-frequency suppressing frequency range, the first upper surface 4 of first metal column 2 shows as approximate ideal magnetic conductor, and described
First upper surface 4 of one metal column 2 constitutes the knot of less parallel board transmission line with the upper metal inner wall 10 of the rectangular waveguide 1
Structure, because perfect magnetic conductor is periodically distributed in the bottom surface of the parallel-plate transmission line, therefore in the high-frequency suppressing frequency
Inhibiting effect is played in the electromagnetic transmission of section；In another high-frequency suppressing frequency range, similarly, the second of second metal column 3
Upper surface 5 shows as approximate ideal magnetic conductor, the top of the second upper surface 5 and the rectangular waveguide 1 of second metal column 3
Metal inner surface 10 constitutes the structure of less parallel board transmission line, because the bottom surface of the parallel-plate transmission line is periodically distributed with
Perfect magnetic conductor, therefore inhibiting effect is played to the transmission of the frequency range electromagnetic wave.
The rectangular waveguide 1 and its bottom broadside are in first metal column 2 and second gold medal of periodic distribution
Belong to column 3 and forms the multiband guide filter with a low-frequency range high-pass filtering characteristic and two high band bandreject filtering characteristics
Device.
The present invention is based on the multiband waveguide filters of Meta Materials technology to realize filter function, structure using Meta Materials technology
Simple and compact, design process is simple, does not need the complicated design of multiband filter equivalent circuit and its microwave circuit and realizes,
It is small in size, it is light-weight, miniaturization is realized convenient for electronic system；The present invention realizes the inhibition of outer three frequency ranges of working band, shows as
The high-pass filtering of one low-frequency range and the bandreject filtering of two high bands, while low-loss transmission electromagnetic wave on working frequency range
Inhibit the degree of suppression of frequency range up to 40dB or more to three；Multiband waveguide filter the present invention is based on Meta Materials technology is
All-metal structure, processing technology is mature, and high reliablity has a wide range of application.
Embodiment one
The multiband waveguide filter of the present invention based on Meta Materials technology is that there are three inhibit frequency for tool in embodiment
The low loss filter of section, the inhibition frequency range include a low-frequency stop band and two high frequency stopbands.
Specifically, giving the working frequency range f of the multiband waveguide filterL~fHIt is described for 2~3.5GHz of S-band
Low frequency inhibits most high frequency f in frequency rangeStop1HFor the 1.7GHz of L-band；Wherein, a high-frequency suppressing frequency range fstop2L~fstop2H
For 5.0~6.8GHz of C-band, another high-frequency suppressing frequency range fstop3L~fstop3HFor 8.1~9.4GHz of X-band, institute
Stating low frequency inhibits the belt resistance inhibitor system in frequency range and the high-frequency suppressing frequency range to be required to be greater than 40dB.
The multiband waveguide filter design parameter determination based on Meta Materials technology corresponding in the present embodiment is as follows:
According to the working band fL~fHInhibit highest frequency f in frequency range with the low frequencyStop1HIt can determine the square
The cross sectional dimensions a and b of shape waveguide 1.
In general, in view of inhibiting higher mode, reducing loss and guaranteeing transimission power, the size selection of the rectangular waveguide 1
Range are as follows:
0.5 λ≤a≤λ, 0 λ of < b≤0.5
Wherein, λ is working frequency range fL~fHOperating frequency wavelength；A is the length dimension of the rectangular waveguide cross section；b
For the height dimension of the rectangular waveguide cross section.
By working frequency maximum wavelength calculate, a value between 75.0~150.0mm, b value 0~75.0mm it
Between.
In view of the inhibition interfered low-frequency range and the requirement of corresponding degree of suppression, condition is also needed to meet；
a≤0.5λstop1H
Wherein, λstop1HInhibit highest frequency f in frequency range for low frequencyStop1HWavelength.
Therefore in the present embodiment, the value of a is less than 88.2mm.
Through comprehensively considering, a is selected as 80.0mm, and b is selected as 9.2mm.
The design of first metal column 2 and second metal column 3 is related to the requirement of the high-frequency suppressing frequency range；Tool
And the present embodiment body, the size of first metal column 2 is related with the requirement of the lower high-frequency suppressing frequency range of frequency, i.e.,
In the stopband of C-band require related, and the size of second metal column 3 and the higher high-frequency suppressing frequency range of frequency
It is required that it is related, i.e., it is related with the stopband requirement of the X-band in this example.
Wherein, the value of h1 and h2 is usually the quarter-wave of the corresponding high-frequency suppressing frequency range centre frequency, P1,
The value of W1 and P2, W2 are related to the bandwidth requirement of corresponding stopband.Due to first metal column 2 and second metal column 3
Between exist mutually even, the value of above-mentioned size needs a degree of optimization.By optimization design, first described in the present embodiment
The size of metal column 2 and second metal column 3 are as follows: W1=10.0mm, h1=13.5mm, P1=16.0mm, W2=4mm, h2
=6.5mm, P2=8mm.
Fig. 4 is the simulation result of the transfer curve of multifrequency waveguide filter described in the present embodiment after optimized design
Figure.As shown in Figure 4, in the case where the present embodiment setting value, in operating frequency range, wherein transmission characteristic S21Value it is excellent
Show that the multiband waveguide filter the present invention is based on Meta Materials technology can be in working frequency range very close to 0dB in -0.1dB
fL~fHInterior low-loss transmission electromagnetic wave, insertion loss are less than 0.1dB.Meanwhile inhibiting frequency in a low frequency lower than working frequency range
Section and higher than working frequency range two high-frequency suppressing frequency ranges, S21Value be below -40dB, it is low to show that filter of the present invention realizes
Frequency inhibits the filtering of three frequency ranges of frequency range and high-frequency suppressing frequency range, and belt resistance inhibitor system is greater than 40dB.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (8)
1. a kind of multiband waveguide filter based on Meta Materials technology, which is characterized in that including rectangular waveguide, the first metal column
With the second metal column, the both ends of the rectangular waveguide are provided with the input port and output port of opening；First metal column
Be arranged with second metal column in the rectangular waveguide bottom, and be set to the input port and the output port it
Between；First metal column and second metal column are in periodic arrangement, and are arranged alternately along the longitudinal direction of the rectangular waveguide；
Several translots and transverse bar are provided between the input port and the output port, the translot and the transverse bar are in institute
Rectangular waveguide bottom is stated uniformly to be arranged alternately；Several first metal columns, each transverse bar are provided in each translot
On be provided with several second metal columns；And first metal column in the same translot is placed equidistant with；Same institute
Second metal column stated on transverse bar is placed equidistant with.
2. as described in claim 1 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that first gold medal
Belong to column to be arranged at the translot position of center line, second metal column is arranged at the transverse bar position of center line.
3. as described in claim 1 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that in the input
Port inner wall, the first upper surface of first metal column, described second are provided at port and the output port position
Second upper surface of metal column and the port inner wall are in same plane, to form discontinuous metal covering.
4. as described in claim 1 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that first gold medal
Belong to column, the cross section of second metal column is square.
5. as described in claim 1 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that described based on super
The setting parameter of the multiband waveguide filter of material technology includes that working frequency range, low frequency inhibit the suppression of frequency range and two or more high frequency
Frequency range processed；The cross section ruler of the rectangular waveguide is determined according to highest frequency and the working band in low frequency inhibition frequency range
It is very little；The size of first metal column and second metal column is determined according to the high-frequency suppressing frequency range.
6. as claimed in claim 5 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that the rectangular wave
The size selection range led is；
0.5 λ≤a≤λ, 0 λ of < b≤0.5
Wherein, λ is the operating frequency wavelength of the working frequency range；A is the length dimension of the rectangular waveguide cross section；B is institute
State the height dimension of rectangular waveguide cross section.
7. as claimed in claim 6 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that the rectangular wave
The size led need to meet condition；
a≤0.5λ
Wherein, λ is the wavelength that low frequency inhibits highest frequency in frequency range, and a is the length dimension of the rectangular waveguide cross section.
8. as claimed in claim 5 based on the multiband waveguide filter of Meta Materials technology, which is characterized in that the high frequency suppression
Frequency range processed includes the first high frequency stopband and the second high frequency stopband, and the frequency of the first high frequency stopband is hindered less than second high frequency
The frequency of band, the height dimension of first metal column are the quarter-wave of the first high frequency stopband center frequency；Institute
The height dimension for stating the second metal column is the quarter-wave of the second high frequency stopband center frequency.
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| CN110474136B (en) * | 2019-07-30 | 2021-03-30 | 电子科技大学 | Capacitive structure loaded waveguide filter |
| CN112469258B (en) * | 2020-10-28 | 2022-03-01 | 西安电子科技大学 | Double-gap electromagnetic shielding system, design method thereof and microwave circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6486753B1 (en) * | 2001-06-19 | 2002-11-26 | Nrd Co., Ltd. | Metal post filter assembly using non-radiative dielectric waveguide |
| CN206471503U (en) * | 2015-12-24 | 2017-09-05 | 日本电产艾莱希斯株式会社 | slot array antenna and radar |
| CN107408747A (en) * | 2015-01-19 | 2017-11-28 | 加普韦夫斯公司 | The microwave or millimeter wave RF part realized by die forming |
| CN108550968A (en) * | 2018-05-22 | 2018-09-18 | 电子科技大学中山学院 | Waveguide low-pass harmonic suppressor with pits |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008322A1 (en) * | 2007-07-06 | 2009-01-15 | Murata Manufacturing Co., Ltd. | High frequency device having two-dimensional periodic structure |
| CN104241794B (en) * | 2013-06-09 | 2017-04-19 | 华为技术有限公司 | Combined waveguide |
| CN103545583A (en) * | 2013-10-24 | 2014-01-29 | 江苏贝孚德通讯科技股份有限公司 | Waveguide low-pass filter |
| CN205429123U (en) * | 2016-03-15 | 2016-08-03 | 中国电子科技集团公司第二十七研究所 | High -power high suppression degree harmonic filter of S frequency channel broadband |
| CN107146943B (en) * | 2017-03-20 | 2020-10-30 | 中国电子科技集团公司第三十八研究所 | Grid groove metamaterial waveguide slot antenna and design method thereof |
| CN207474635U (en) * | 2017-10-10 | 2018-06-08 | 中国人民解放军陆军工程大学 | Wide-stop-band-pass filter loaded with metal perturbation columns |
| CN108493544A (en) * | 2018-05-22 | 2018-09-04 | 电子科技大学中山学院 | Asymmetric waffle mode filter |
-
2018
- 2018-10-22 CN CN201811237585.3A patent/CN109301411B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6486753B1 (en) * | 2001-06-19 | 2002-11-26 | Nrd Co., Ltd. | Metal post filter assembly using non-radiative dielectric waveguide |
| CN107408747A (en) * | 2015-01-19 | 2017-11-28 | 加普韦夫斯公司 | The microwave or millimeter wave RF part realized by die forming |
| CN206471503U (en) * | 2015-12-24 | 2017-09-05 | 日本电产艾莱希斯株式会社 | slot array antenna and radar |
| CN108550968A (en) * | 2018-05-22 | 2018-09-18 | 电子科技大学中山学院 | Waveguide low-pass harmonic suppressor with pits |
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