CN109167131A - A kind of rectangular wave inducing defecation by enema and suppository wave interference filter - Google Patents
A kind of rectangular wave inducing defecation by enema and suppository wave interference filter Download PDFInfo
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- CN109167131A CN109167131A CN201810870391.0A CN201810870391A CN109167131A CN 109167131 A CN109167131 A CN 109167131A CN 201810870391 A CN201810870391 A CN 201810870391A CN 109167131 A CN109167131 A CN 109167131A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
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Abstract
The invention belongs to field of microwave communication, are related to transmission line, wave filter technology more particularly to a kind of rectangular wave inducing defecation by enema and suppository wave interference filter.The present invention is by filling the different filled media of 2 kinds of relative dielectric constants in single-chamber body rectangular waveguide with angle ф, filled media 1 is filled in the middle section of rectangular waveguide cavity, it is the parallelogram of angle=22 ° along a section of wave transmission direction, another section is rectangle；I.e. direction of wave travel fill surface corresponding with filled media 1 is at an angle of ф=22 °；Filled media 2 is 2 parts, respectively at 1 two sides of filled media.The present invention accomplishes bandwidth narrower under the premise of guaranteeing device performance, provides its selectivity, and is lost small, not will increase the volume of filter, and process is simple.
Description
Technical field
The invention belongs to field of microwave communication, are related to transmission line, wave filter technology.More particularly to a kind of rectangular wave inducing defecation by enema and suppository wave
Interference filter.
Background technique
Rectangular waveguide is that microwave regime uses to obtain a kind of most common transmission line, it is the metal tube of rectangle by cross sectional shape
It constitutes.Rectangular waveguide is using the important guide wave device of metal tube transmission electromagnetic wave, and tube wall should select conductivity height, high frequency damage
Consume small material, usually copper, aluminium or other metal materials.Without inner conductor in waveguide, therefore has and low, power capacity is lost
The features such as big.Electromagnetic wave is guided to propagate in waveguide inner space, can prevent external electromagnetic radiation, therefore rectangular waveguide
Has the characteristics that Low emissivity.
Rectangular waveguide filter is a kind of common component of microwave filter, itself has as one of cavity body filter
High q-factor, low-loss, power capacity is big, decays the advantages that small, has a wide range of applications in field of microwave communication.Rectangular waveguide list
The passband of chamber is larger, so bandwidth often can not be made very narrow in the case where number of cavities is few enough, it is impossible to meet frequencies
The selectively high feature of rate.
Summary of the invention
For above-mentioned status, to solve existing rectangular waveguide filter in the case where keeping number of cavities constant, bandwidth
Not narrow enough problem, the present invention provides a kind of rectangular wave inducing defecation by enema and suppository wave interference filters.
The rectangular wave inducing defecation by enema and suppository wave interference filter includes rectangular waveguide cavity and filled media.
The rectangular waveguide cavity is single-chamber body；
The filled media is the filled media of two kinds of different relative dielectric constants, which is passed by incidence wave
Direction segmentation is broadcast to be filled in rectangular waveguide cavity；Filled media 1 is filled in the middle section of rectangular waveguide cavity, along wave
One section of transmission direction is the parallelogram of angle=22 °, another section is rectangle；That is direction of wave travel and filling
The corresponding fill surface of medium 1 is at an angle of ф=22 °；Filled media 2 is 2 parts, respectively at 1 two sides of filled media.
Further, the physical centre of the filled media 1 and the physical centre of rectangular waveguide cavity are completely coincident, described
2 be partially filled with medium 2 size it is completely the same.
Its design method are as follows:
Step 1, according to the size formula of rectangular waveguide and the frequency range studied, obtain the parameters of rectangular waveguide:
Broadside is having a size of a, and for narrow side having a size of b, rectangular waveguide total length is L.
Step 2 obtains the phase of two kinds of filled medias according to the linear accelerator of principle of interference and combination rectangular waveguide cavity
To the size ε of dielectric constant1、ε2。
The parameter that step 1 and step 2 obtain is modeled in HFSS, and is emulated by HFSS parameters by step 3
It calculates, the length on the filling inclined-plane in rectangular waveguide cavity perpendicular to filled media 1 is D, and filled media 1 is close to rectangular waveguide
The length of wall is L1, wherein L1=D/sin ф；Then the centre frequency f of first band logical each group of data obtained as because
Variable, respectively with ε1The D of filled media correspondingly-sized carries out formula fitting as independent variable, with MATLAB software to obtain them
Between relationship, finally determine each filled media in the D of corresponding working frequency range.
The present invention is situated between by filling the different filling of 2 kinds of relative dielectric constants in rectangular waveguide single-chamber body with angle ф
Matter accomplishes bandwidth narrower under the premise of guaranteeing device performance, provides its selectivity, and is lost small, not will increase filtering
The volume of device, and process is simple.
Detailed description of the invention
Fig. 1 is that comparative example is filled only with relative dielectric constant ε2Filled media rectangular waveguide cavity three-dimensional signal
Figure；
Fig. 2 is the schematic perspective view of embodiment；
Fig. 3 is the schematic side view of embodiment；
Fig. 4 is to be filled only with relative dielectric constant as ε2Filled media rectangular waveguide cavity S parameter figure；
Fig. 5 is the S parameter figure of embodiment；
Fig. 6 is the graph of relation of the centre frequency f and D of first band logical of embodiment；
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Step 1, the rectangular waveguide cavity such as Fig. 1 for choosing X-band.
Rectangular waveguide broadside a=22.86mm, narrow side b=10.16mm, total length L=114mm of rectangular waveguide cavity are filled out
The relative dielectric constant ε of filling medium2It is its S parameter figure for 10, Fig. 4.
Step 2 obtains the opposite of 2 kinds of filled medias according to the linear accelerator of principle of interference and combination rectangular waveguide cavity
Dielectric constant is respectively ε1=1.0006, ε2=10, D=25.8mm, angle ф=22 °, Fig. 5 are its S parameter figure.
Step 3 is ε to relative dielectric constant1Filled media D to first band logical of rectangular waveguide interference filter
Centre frequency f studied respectively, the relationship of f and D are as shown in Figure 6.
Step 4 carries out formula fitting according to relationship of the obtained data to f and D, and obtained formula is f=0.4165 (D)2-
19.45D+233.8
The rectangular wave inducing defecation by enema and suppository wave interference filter of embodiment design, as filling ε1It is 1, ε2For 10 2 kinds of filled medias when,
As seen from Figure 4, at this time passband is very big.
The opposite dielectric of the 2 kinds of filled medias obtained then in conjunction with the linear accelerator of principle of interference and rectangular waveguide is normal
Number is respectively ε1、ε2, size is respectively 1.0006 and 10, and wherein relative dielectric constant is ε1D=25.8mm, tilt angle ф
=22 °.
This 2 kinds of filled medias are filled into the corresponding position of rectangular waveguide cavity and form rectangular wave inducing defecation by enema and suppository wave interference filter
There is bandpass part, and bandpass part bandwidth as shown in figure 5, can be seen that the filter in conjunction with Fig. 5 in wave device, S parameter figure
It is very narrow, very little is lost, has reached above-mentioned requirements.Finally, the relationship of centre frequency and D to first band logical is studied,
And fit their formula.
To sum up, the present invention is by filling 2 kinds of relative dielectric constant differences in rectangular waveguide single-chamber body with angle ф
Filled media bandwidth is accomplished narrower under the premise of guaranteeing device performance, and be lost small, not will increase filter
Volume, and process is simple.
Claims (3)
1. a kind of rectangular wave inducing defecation by enema and suppository wave interference filter, including rectangular waveguide cavity and filled media, it is characterised in that:
The rectangular waveguide cavity is single-chamber body；
The filled media is the filled media of two kinds of different relative dielectric constants, which is pressed into waves travel side
It is filled in rectangular waveguide cavity to segmentation；Filled media 1 is filled in the middle section of rectangular waveguide cavity, transmits along wave
One section in direction is the parallelogram of angle=22 °, another section is rectangle；That is direction of wave travel and filled media
1 corresponding fill surface is at an angle of ф=22 °；Filled media 2 is 2 parts, respectively at 1 two sides of filled media.
2. rectangular wave inducing defecation by enema and suppository wave interference filter as described in claim 1, it is characterised in that: in the physics of the filled media 1
The physical centre of the heart and rectangular waveguide cavity is completely coincident.
3. the design method of rectangular wave inducing defecation by enema and suppository wave interference filter as described in claim 1, comprising the following steps:
Step 1, according to the size formula of rectangular waveguide and the frequency range studied, obtain the parameters of rectangular waveguide: broadside
Having a size of a, for narrow side having a size of b, rectangular waveguide total length is L；
Step 2 obtains opposite Jie of two kinds of filled medias according to the linear accelerator of principle of interference and combination rectangular waveguide cavity
The size ε of electric constant1、ε2；
The parameter that step 1 and step 2 obtain is modeled in HFSS, and carries out emulation meter by HFSS parameters by step 3
It calculates, the length on the filling inclined-plane in rectangular waveguide cavity perpendicular to filled media 1 is D, and filled media 1 is close to rectangular wave guide wall
Length be L1, wherein L1=D/sin ф；Then the centre frequency f of first band logical each group of data obtained is as because becoming
Amount, respectively with ε1The D of filled media correspondingly-sized as independent variable, with MATLAB software carry out formula fitting with obtain them it
Between relationship, finally determine each filled media in the D of corresponding working frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870391.0A CN109167131B (en) | 2018-08-02 | 2018-08-02 | Rectangular waveguide normal wave interference filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810870391.0A CN109167131B (en) | 2018-08-02 | 2018-08-02 | Rectangular waveguide normal wave interference filter |
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| Publication Number | Publication Date |
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| CN109167131A true CN109167131A (en) | 2019-01-08 |
| CN109167131B CN109167131B (en) | 2020-03-27 |
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| CN201810870391.0A Active CN109167131B (en) | 2018-08-02 | 2018-08-02 | Rectangular waveguide normal wave interference filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078435A (en) * | 2021-03-11 | 2021-07-06 | 电子科技大学 | Q value optimization design method of X-band rectangular waveguide normal wave interference filter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0855757A2 (en) * | 1997-01-24 | 1998-07-29 | Murata Manufacturing Co., Ltd. | Dielectric filter and dielectric duplexer |
| DE19727125A1 (en) * | 1997-06-26 | 1999-01-07 | Dietmar Johlen | Fabry-Perot resonator in optical waveguide for narrowband filter without reflection |
| CN1547047A (en) * | 2003-12-15 | 2004-11-17 | 中国科学院上海光学精密机械研究所 | Tunable band-pass filter based on spatial birefringence element |
| CN1732591A (en) * | 2002-12-26 | 2006-02-08 | 松下电器产业株式会社 | Dielectric filter |
| CN1828351A (en) * | 2006-04-11 | 2006-09-06 | 天津大学 | Optical fiber waveguide type F-P filter |
| EP2416207A1 (en) * | 2010-08-04 | 2012-02-08 | Bayer MaterialScience AG | Switchable optical modulation system |
| CN105846024A (en) * | 2016-05-17 | 2016-08-10 | 电子科技大学 | SIW double-layer cavity filter |
| CN207303643U (en) * | 2017-06-02 | 2018-05-01 | 苏州光之羽光电科技有限公司 | A kind of adjustable optical fibre Fabry-perot cavity resonator structure of short cavity and tunable laser |
-
2018
- 2018-08-02 CN CN201810870391.0A patent/CN109167131B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0855757A2 (en) * | 1997-01-24 | 1998-07-29 | Murata Manufacturing Co., Ltd. | Dielectric filter and dielectric duplexer |
| DE19727125A1 (en) * | 1997-06-26 | 1999-01-07 | Dietmar Johlen | Fabry-Perot resonator in optical waveguide for narrowband filter without reflection |
| CN1732591A (en) * | 2002-12-26 | 2006-02-08 | 松下电器产业株式会社 | Dielectric filter |
| CN1547047A (en) * | 2003-12-15 | 2004-11-17 | 中国科学院上海光学精密机械研究所 | Tunable band-pass filter based on spatial birefringence element |
| CN1828351A (en) * | 2006-04-11 | 2006-09-06 | 天津大学 | Optical fiber waveguide type F-P filter |
| EP2416207A1 (en) * | 2010-08-04 | 2012-02-08 | Bayer MaterialScience AG | Switchable optical modulation system |
| CN105846024A (en) * | 2016-05-17 | 2016-08-10 | 电子科技大学 | SIW double-layer cavity filter |
| CN207303643U (en) * | 2017-06-02 | 2018-05-01 | 苏州光之羽光电科技有限公司 | A kind of adjustable optical fibre Fabry-perot cavity resonator structure of short cavity and tunable laser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078435A (en) * | 2021-03-11 | 2021-07-06 | 电子科技大学 | Q value optimization design method of X-band rectangular waveguide normal wave interference filter |
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