CN205666309U - Y connected in star microwave band pass filter - Google Patents
Y connected in star microwave band pass filter Download PDFInfo
- Publication number
- CN205666309U CN205666309U CN201620351748.0U CN201620351748U CN205666309U CN 205666309 U CN205666309 U CN 205666309U CN 201620351748 U CN201620351748 U CN 201620351748U CN 205666309 U CN205666309 U CN 205666309U
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- CN
- China
- Prior art keywords
- shape groove
- pass filter
- metal
- strip
- microwave band
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Abstract
The utility model discloses a Y connected in star microwave band pass filter. Including dielectric plate (1), be equipped with metal microstrip (2) on dielectric plate (1), the both sides of metal microstrip (2) are equipped with metal ground (3), metal microstrip (2) including co -planar waveguide section (4), co -planar waveguide section (4) are left excimer section (6) through changeover portion (5) and artificial surface etc. And are connected, artificial surface etc. Go up to distribute from excimer section (6) and have Y connected in star (7). The utility model has the characteristics of low transmission loss, electromagnetic field reflect is weak and anti -electromagnetic interference can the reinforce.
Description
Technical field
This utility model relates to the wave filter of a kind of communication field, particularly one and has Y shape groove structure
Microwave band artificial phasmon wave filter.
Background technology
Current big data age, along with the demand of information becomes explosive growth, field of mobile communication requirement
The higher microwave device of integrated level can be produced, however as constantly reducing of high-frequency integrated circuit size, skill
Series of problems is occurred in that in art, such as little to certain degree, the electromagnetism of device when the size of microwave device
Interference noise, RC delay etc. reaches capacity and causes device job insecurity, and the most existing microwave device is the most not
Adapt to the development of current extensive microwave integrated circuit.
Utility model content
The purpose of this utility model is, it is provided that a kind of Y shape groove microwave band-pass filter.This utility model
Have the advantages that low transmission is lost, ELECTROMAGNETIC REFLECTION is little and anti-electromagnetic interference capability is strong.
The technical solution of the utility model: a kind of Y shape groove microwave band-pass filter, including dielectric-slab, is situated between
Scutum is provided with metal micro-strip, and the both sides of metal micro-strip are provided with metal ground；Described metal micro-strip includes coplanar
Waveguide segment, co-planar waveguide section is connected with artificial surface phasmon section through changeover portion；Described artificial surface etc.
Y shape groove is distributed in excimer section.
In aforesaid Y shape groove microwave band-pass filter, the A/F w1 of described Y shape groove be 0.1～
1.0mm, the overall width L of Y shape groove4It is 3～6mm；The grooved period p of described Y shape groove is 4～8mm,
Y shape groove upper semisection degree of depth d1 is 2.0～6.0mm, and the total depth Ch1 of Y shape groove is 3.0～8.0mm.
In aforesaid Y shape groove microwave band-pass filter, the metal destination edge being in changeover portion position is, full
Foot Y=h+g+w* (exp (a* (X-L1)/L2)-1) curve of/(expa-1) equation；Wherein a is curve shape coefficient,
Its value is 5～20；H is metal micro-strip width, and its value is 3.5～9mm；G is metal micro-strip and metal
Ground spacing, its value is 0.3～1mm, and w is the width on metal ground, and its value is 20～30mm, L1It is common
The length of face waveguide segment, its value is 5～15mm, L2For transition section length, 40～80mm.
In aforesaid Y shape groove microwave band-pass filter, described changeover portion is provided with the Y shape of degree of depth gradual change
Groove.
Compared with prior art, this utility model is (following with its length symbol L in co-planar waveguide section1Substitute)
With artificial surface phasmon section (below with its length symbol L3Substitute) between increase changeover portion be connected；
By this structure, it is possible to realize L1And L3Between good continuous transition, substantially reduce L1And L3Directly
Microwave electric field reflection during connection, effectively reduces the loss of electromagnetic field.This utility model was in
The metal destination edge crossing fragment position is Y=h+g+w* (exp (a* (X-L1)/L2)-1)/the curve of (expa-1), its
Middle a is curve shape coefficient, is used for adjusting bent curvature of a curve, and applicant finds after carrying out lot of experiments,
When the span of a is at 5～20, the Quasi-TEM mode good transition to SSPPs pattern can be realized,
I.e. substantially reduce L1And L3The microwave electric field produced with impedance mismatch because of the pattern of electromagnetic field when being directly connected to
Reflection.In addition, this utility model is also distributed the Y shape groove of degree of depth gradual change on changeover portion transmission line；
By this structure, the Quasi-TEM mode transition to SSPPs pattern can be realized further, reduce microwave electric field anti-
Penetrate.This utility model is by L3On a series of Y shape groove is set；By this structure so that electromagnetic field
It is bound in Y shape groove vicinity when transmission, thus greatly reduces plurality of transmission lines (metal micro-strip) transmission
Time the electromagnetic interference that occurs because spacing is the least so that capacity of resisting disturbance is greatly enhanced, and also enhances height simultaneously
Stability during density microwave integrated circuit operation, moreover, because anti-electromagnetic interference capability is greatly enhanced,
This utility model can also reduce the spacing between the metal micro-strip of microwave integrated circuit to realize the miniaturization of device,
Thus the development of current extensive microwave integrated circuit can be better adapted to.This utility model can also be by regulation Y
The physical dimension of connected in star regulates and controls cut-off frequency and the magnetic distribution of microwave transmission line, and applicant is being carried out
Find after lot of experiments, when the A/F w1 of Y shape groove is 0.1～1.0mm, the overall width of Y shape groove
L4Being 3～6mm, the grooved period p of Y shape groove is 4～8mm, Y shape groove upper semisection degree of depth d1 be 2.0～
6.0mm, when the total depth Ch1 of Y shape groove is 3.0～8.0mm, electromagnetic field is had very well by Y shape groove
Constraint effect.
In order to preferably prove the beneficial effects of the utility model, application has carried out following experiment: applicant sets
Count a Y shape groove microwave band-pass filter sample, the parameter of sample such as table 1.
Table 1 microwave filter sample each several part parameter (unit: mm)
The dielectric-slab of this sample uses dielectric constant to be the substrate of 2.65, the filtering curve warp to this sample
Fdtd Method calculates as in figure 2 it is shown, this sample is bandpass filtering, and its-3dB passband is 2.3532GHz
To 7.9739GHz, sample is better than 1.5dB in whole passband internal reflection less than-8.7dB, ripple shake.Fig. 2
Middle S11 is filter reflection coefficients；S21 is filter transfer coefficient.As shown in Figure 2, the reflection of this sample
Characteristic is effectively improved, and the filtering characteristic of sample is well optimized simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the S parameter curve chart of sample.
Being labeled as in accompanying drawing: 1-dielectric-slab, 2-metal micro-strip, 3-metal ground, 4-co-planar waveguide section, 5-
Changeover portion, 6-artificial surface phasmon section, 7-Y connected in star.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings, but is not intended as this reality
Foundation with novel restriction.
Embodiment.A kind of Y shape groove microwave band-pass filter, is constituted as it is shown in figure 1, include dielectric-slab 1,
Dielectric-slab 1 is provided with metal micro-strip 2, and the both sides of metal micro-strip 2 are provided with metal ground 3；Described metal micro-strip
2 include co-planar waveguide section 4, and co-planar waveguide section 4 is connected with artificial surface phasmon section 6 through changeover portion 5；
Y shape groove 7 is distributed in described artificial surface phasmon section 6.
The A/F w1 of aforesaid Y shape groove 7 is 0.1～1.0mm, the overall width L of Y shape groove4Be 3～
6mm；The grooved period p of described Y shape groove is 4～8mm, Y shape groove upper semisection degree of depth d1 be 2.0～
6.0mm, the total depth Ch1 of Y shape groove are 3.0～8.0mm.
In aforesaid Y shape groove microwave band-pass filter, 3 edges, metal ground being in changeover portion 5 position are,
Meet Y=h+g+w* (exp (a* (X-L1)/L2)-1) curve of/(expa-1) equation；Wherein a is curve shape system
Number, its value is 5～20；H is metal micro-strip width, and its value is 3.5～9mm；G is metal micro-strip 2
With metal ground 3 spacing, its value is 0.3～1mm, and w is the width on metal ground 3, and its value is 20～30mm,
L1For the length of co-planar waveguide section, its value is 5～15mm, L2For transition section length, 40～80mm.
Aforesaid changeover portion 5 is provided with the Y shape groove 7 of degree of depth gradual change.
Operation principle of the present utility model: the electromagnetic field of Quasi-TEM mode is transmitted by the co-planar waveguide section 4 on the left side
To changeover portion 5, changeover portion 5 gradually fades to the electromagnetic field of SSPPs pattern, and accurate in changeover portion 5
The electromagnetic field of TEM mode and SSPPs pattern coexists, when electromagnetic field arrives artificial surface phasmon section 6,
It is fully converted to the electromagnetic field of SSPPs pattern, and at L3It is transmitted, SSPPs pattern electromagnetic field after transmission
Changeover portion through the right is converted into the electromagnetic field co-planar waveguide section output by the right of Quasi-TEM mode again.
Claims (4)
1. a Y shape groove microwave band-pass filter, it is characterised in that: include dielectric-slab (1), dielectric-slab
(1) metal micro-strip (2), the both sides of metal micro-strip (2) with being provided with metal (3) it are provided with；Described gold
Belonging to micro-strip (2) and include co-planar waveguide section (4), co-planar waveguide section (4) is through changeover portion (5) and artificial surface
Phasmon section (6) connects；Y shape groove (7) is distributed on described artificial surface phasmon section (6).
Y shape groove microwave band-pass filter the most according to claim 1, it is characterised in that: described
The A/F w1 of Y shape groove (7) is 0.1～1.0mm, the overall width L of Y shape groove (7)4Be 3～
6mm；The grooved period p of described Y shape groove (7) is 4～8mm, Y shape groove (7) the upper semisection degree of depth
D1 is 2.0～6.0mm, and the total depth Ch1 of Y shape groove (7) is 3.0～8.0mm.
Y shape groove microwave band-pass filter the most according to claim 1 and 2, it is characterised in that: place
(3) edge, metal ground in changeover portion (5) position is to meet
Y=h+g+w* (exp (a* (X-L1)/L2)-1) curve of/(expa-1) equation；Wherein a is curve shape coefficient,
Its value is 5～20；H is metal micro-strip width, and its value is 3.5～9mm；G is metal micro-strip (2)
With metal ground (3) spacing, its value is 0.3～1mm, and w is the metal ground width of (3), and its value is
20～30mm, L1For the length of co-planar waveguide section, its value is 5～15mm, L2For transition section length, 40～
80mm。
Y shape groove microwave band-pass filter the most according to claim 1 and 2, it is characterised in that: institute
The changeover portion (5) stated is provided with the Y shape groove (7) of degree of depth gradual change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351748.0U CN205666309U (en) | 2016-04-25 | 2016-04-25 | Y connected in star microwave band pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351748.0U CN205666309U (en) | 2016-04-25 | 2016-04-25 | Y connected in star microwave band pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666309U true CN205666309U (en) | 2016-10-26 |
Family
ID=57164060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620351748.0U Expired - Fee Related CN205666309U (en) | 2016-04-25 | 2016-04-25 | Y connected in star microwave band pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785266A (en) * | 2017-01-04 | 2017-05-31 | 梧州学院 | A kind of microwave filter with five-pointed star groove |
-
2016
- 2016-04-25 CN CN201620351748.0U patent/CN205666309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785266A (en) * | 2017-01-04 | 2017-05-31 | 梧州学院 | A kind of microwave filter with five-pointed star groove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20170425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |