CN205752467U - A kind of stub loads rectangular channel microwave filter - Google Patents
A kind of stub loads rectangular channel microwave filter Download PDFInfo
- Publication number
- CN205752467U CN205752467U CN201620351747.6U CN201620351747U CN205752467U CN 205752467 U CN205752467 U CN 205752467U CN 201620351747 U CN201620351747 U CN 201620351747U CN 205752467 U CN205752467 U CN 205752467U
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- rectangular channel
- stub
- strip
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- metal
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Abstract
The utility model discloses a kind of stub and load rectangular channel microwave filter.Including dielectric-slab (1), dielectric-slab (1) is provided with metal micro-strip (2), the both sides of metal micro-strip (2) with being provided with metal (3)；Described metal micro-strip (2) includes that co-planar waveguide section (4), co-planar waveguide section (4) are connected with artificial surface phasmon section (6) through changeover portion (5)；Rectangular channel (7) is distributed on described artificial surface phasmon section (6), in rectangular channel (7), is provided with the stub (8) of length gradual change.This utility model has that ELECTROMAGNETIC REFLECTION is little, the feature of anti-electromagnetic interference capability by force and beneficially miniaturization.
Description
Technical field
This utility model relates to the wave filter of a kind of communication field, and particularly a kind of stub loads rectangular channel
Microwave 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 stub loads rectangular channel microwave filter.This practicality
Novel have that ELECTROMAGNETIC REFLECTION is little, the feature of anti-electromagnetic interference capability by force and beneficially miniaturization.
The technical solution of the utility model: a kind of stub loads rectangular channel microwave filter, including dielectric-slab,
Dielectric-slab is provided with metal micro-strip, and the both sides of metal micro-strip are provided with metal ground；Described metal micro-strip includes altogether
Face waveguide segment, co-planar waveguide section is connected with artificial surface phasmon section through changeover portion；Described artificial surface
Rectangular channel is distributed in phasmon section, in rectangular channel, is provided with stub.
Aforesaid stub loads in rectangular channel microwave filter, and the width of rebate w1 of described rectangular channel takes
Value is 1～5mm, and the value of groove depth Ch1 is 2～6mm, and rectangular channel period p is 2～8mm；Described cutting back
Length l of line is 1～4mm, and width w2 is 0.5～1.5mm.
Aforesaid stub loads in rectangular channel microwave filter, and the metal destination edge being in changeover portion position is,
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 4～8mm；G be metal micro-strip with
Metal ground spacing, its value is 0.3～1mm, and w is the width on metal ground, and its value is 20～30mm, L1
For the length of co-planar waveguide section, its value is 5～15mm, L2For transition section length, 40～80mm.
Aforesaid stub loads in rectangular channel microwave filter, and described changeover portion is provided with degree of depth gradual change
Rectangular channel, is provided with the stub of length gradual change in rectangular channel.
Compared with prior art, this utility model is (following with its length symbol L in co-planar waveguide section1Substitute) and
Artificial surface phasmon section is (below with its length symbol L3Substitute) between increase changeover portion be connected；Logical
Cross this structure, it is possible to realize L1And L3Between good continuous transition, substantially reduce L1And L3Directly connect
Microwave electric field reflection when connecing, it is to avoid deep fades occurs in outfan electromagnetic field.This utility model is in
The metal destination edge of changeover portion position is Y=h+g+w* (exp (a* (X-L1)/L2)-1)/the curve of (expa-1),
A be curve shape coefficient, be used for adjusting bent curvature of a curve, 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 L3Microwave electric field reflection when being directly connected to.In addition, this utility model is also in mistake
The rectangular channel of degree of depth gradual change is distributed on the section of crossing transmission line, and in rectangular channel, is provided with stub；By this knot
Structure, by increasing capacitance it is possible to increase the impedance of electromagnetic field and pattern match effect, realizes Quasi-TEM mode further to SSPPs
The transition of pattern, reduces microwave electric field reflection；Reflect by reducing electric field so that biography of the present utility model
Transmission loss reduces.This utility model is by arranging a series of rectangular channel in metal micro-strip；By this structure,
Make electromagnetic field transmission time be bound in rectangular channel, thus greatly reduce plurality of transmission lines transmission time because of
The electromagnetic interference that spacing is the least and occurs so that capacity of resisting disturbance is greatly enhanced, also enhances high density simultaneously
Stability during microwave integrated circuit work, moreover, because anti-electromagnetic interference capability is greatly enhanced, this reality
By the spacing between the novel metal micro-strip that can also reduce 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 rectangle
The physical dimension of groove regulates and controls passband and the band external characteristics of wave filter, adjusts the constraint effect of electromagnetic field simultaneously,
Applicant finds after carrying out lot of experiments, when the value of width of rebate w1 is 1～5mm, groove depth Ch1
Value is 2～6mm, and when rectangular channel period p is 2～8mm, length l of stub is 1～4mm, width
When being 0.5～1.5mm, electromagnetic field is had and well fetters effect by rectangular channel.
In order to preferably prove the beneficial effects of the utility model, application has carried out following experiment: applicant sets
Count a stub and load rectangular channel microwave filter sample, the parameter of sample such as table 1.
Table 1 microwave filter sample each several part parameter
The dielectric constant of the dielectric-slab of this sample is 2.65, to the filtering curve of this sample through Finite Difference-Time Domain
Dividing and calculate as in figure 2 it is shown, this sample is bandpass filtering, its-3dB passband is 2.527GHz to 10.974GHz,
Wave filter is less than-10dB in whole passband internal reflection.In Fig. 2, S11 is filter reflection coefficients；S21 is filter
Ripple device transmission coefficient.As shown in Figure 2, the reflection characteristic of this sample is effectively improved, simultaneously the filter of sample
Wave property is well optimized.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the S parameter performance diagram 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-rectangular channel, 8-stub.
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 stub loads rectangular channel microwave filter, constitutes as it is shown in figure 1, include medium
Plate 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 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
Connect；Rectangular channel 7 is distributed in described artificial surface phasmon section 6, in rectangular channel 7, is provided with stub
8。
The value of the width of rebate w1 of aforesaid rectangular channel 7 is 1～5mm, and the value of groove depth Ch1 is 2～6mm,
Rectangular channel 7 period p is 2～8mm；Length l of described stub 8 is 1～4mm, and width w2 is
0.5～1.5mm.
3 edges, metal ground being in changeover portion 5 position are 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 4～8mm；G is metal micro-strip 2 and 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, L1
For 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 rectangular channel 7 of degree of depth gradual change, is provided with the short of length gradual change in rectangular channel 7
Transversal 8.
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.?
L3During transmission, electromagnetic field is bound in rectangular channel 7, effectively prevents the diffusion of electromagnetic field, makes electromagnetic field exist
Transmitting procedure is not disturbed other transmission lines, can normally can not be worked by the interference of other transmission lines yet.
Claims (4)
1. a stub loads rectangular channel microwave filter, it is characterised in that: include that dielectric-slab (1), dielectric-slab (1) are provided with metal micro-strip (2), the both sides of metal micro-strip (2) with being provided with metal (3)；Described metal micro-strip (2) includes that co-planar waveguide section (4), co-planar waveguide section (4) are connected with artificial surface phasmon section (6) through changeover portion (5)；Rectangular channel (7) is distributed on described artificial surface phasmon section (6), in rectangular channel (7), is provided with stub (8).
Stub the most according to claim 1 loads rectangular channel microwave filter, it is characterised in that: the value of the width of rebate w1 of described rectangular channel (7) is 1～5mm, and the value of groove depth Ch1 is 2～6mm, and rectangular channel (7) period p is 2～8mm；Length l of described stub (8) is 1～4mm, and width w2 is 0.5 ~ 1.5mm.
Stub the most according to claim 1 and 2 loads rectangular channel microwave filter, it is characterised in that: (3) edge, metal ground being 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, and its value is 5～20；H is metal micro-strip width, and its value is 4～8mm；G is metal micro-strip (2) and metal ground (3) spacing, and 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.
Stub the most according to claim 1 and 2 loads rectangular channel microwave filter, it is characterised in that: described changeover portion (5) is provided with the rectangular channel (7) of degree of depth gradual change, is provided with the stub (8) of length gradual change in rectangular channel (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351747.6U CN205752467U (en) | 2016-04-25 | 2016-04-25 | A kind of stub loads rectangular channel microwave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351747.6U CN205752467U (en) | 2016-04-25 | 2016-04-25 | A kind of stub loads rectangular channel microwave filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205752467U true CN205752467U (en) | 2016-11-30 |
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ID=57371482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620351747.6U Expired - Fee Related CN205752467U (en) | 2016-04-25 | 2016-04-25 | A kind of stub loads rectangular channel microwave filter |
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| Country | Link |
|---|---|
| CN (1) | CN205752467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137639A (en) * | 2019-05-17 | 2019-08-16 | 厦门大学 | A kind of miniaturization variable band-pass filter based on artificial surface phasmon |
| CN114678670A (en) * | 2022-04-20 | 2022-06-28 | 电子科技大学 | Terahertz broadband band elimination filter based on SSPPs transmission line |
-
2016
- 2016-04-25 CN CN201620351747.6U patent/CN205752467U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137639A (en) * | 2019-05-17 | 2019-08-16 | 厦门大学 | A kind of miniaturization variable band-pass filter based on artificial surface phasmon |
| CN114678670A (en) * | 2022-04-20 | 2022-06-28 | 电子科技大学 | Terahertz broadband band elimination filter based on SSPPs transmission line |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170425 |