CN109149027A - A kind of Microstrip Bandpass Filter - Google Patents
A kind of Microstrip Bandpass Filter Download PDFInfo
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- CN109149027A CN109149027A CN201710463918.3A CN201710463918A CN109149027A CN 109149027 A CN109149027 A CN 109149027A CN 201710463918 A CN201710463918 A CN 201710463918A CN 109149027 A CN109149027 A CN 109149027A
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- hair clip
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- 230000007704 transition Effects 0.000 claims abstract description 68
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 238000010276 construction Methods 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 230000003071 parasitic effect Effects 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000011514 reflex Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
This application provides a kind of Microstrip Bandpass Filters, comprising: impedance transition mechanism hair clip type microstrip line, support construction and metal flat；The outer surface Matching installation of impedance transition mechanism hair clip type microstrip line and support construction；The support construction and metal flat Matching installation of impedance transition mechanism hair clip type microstrip line are installed；Impedance transition mechanism hair clip type microstrip line, for filtering out higher hamonic wave on the basis of reducing parasitic passband frequency；Support construction is used to support impedance transition mechanism hair clip type microstrip line and metal flat；Metal flat flows back to signal in impedance transition mechanism hair clip type microstrip line for the reference horizontal plane of manufacturing as signal in impedance transition mechanism hair clip type microstrip line.In this application, the interference that parasitic passband filters out higher hamonic wave is reduced in the above manner, and then improves the effect for inhibiting higher hamonic wave.
Description
Technical field
This application involves electronic technology field, in particular to a kind of Microstrip Bandpass Filter.
Background technique
With the development of modern communication technology, higher and higher, the work of filter is required to the anti-interference ability of communication equipment
With becoming particularly important, the superiority and inferiority of performance directly influences the communication quality of communication equipment.
It is filtered currently, the communications field is often used the micro strip line type filter that size is small, light-weight, but micro strip line type
There is parasitic passband performance difference in filter, cause it that cannot inhibit higher hamonic wave well.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present application provides a kind of Microstrip Bandpass Filter, posted with reaching reduction
The interference that raw passband filters out higher hamonic wave, and then improve the purpose for inhibiting the effect of higher hamonic wave, technical solution is as follows:
A kind of Microstrip Bandpass Filter, comprising: impedance transition mechanism hair clip type microstrip line, support construction and metal flat；
The outer surface Matching installation of the impedance transition mechanism hair clip type microstrip line and the support construction；
Be equipped with the impedance transition mechanism hair clip type microstrip line support construction and the metal flat Matching installation；
The impedance transition mechanism hair clip type microstrip line, for filtering out higher hamonic wave on the basis of reducing parasitic passband frequency；
The support construction is used to support the impedance transition mechanism hair clip type microstrip line and the metal flat；
The metal flat, for the reference horizontal plane of manufacturing as signal in the impedance transition mechanism hair clip type microstrip line, to institute
Signal in impedance transition mechanism hair clip type microstrip line is stated to flow back.
Preferably, the outer surface Matching installation of the impedance transition mechanism hair clip type microstrip line and the support construction, comprising:
The impedance transition mechanism hair clip type microstrip line respectively with the upper and lower surfaces Matching installation of the support construction.
Preferably, the support construction for being equipped with the impedance transition mechanism hair clip type microstrip line matches peace with the metal flat
Dress, comprising:
The lower surface for being equipped with the support construction of the impedance transition mechanism hair clip type microstrip line matches peace with the metal flat
Dress.
Preferably, the impedance transition mechanism hair clip type microstrip line is bilateral symmetry, the impedance transition mechanism hair clip type micro-strip
The left-half and right half part of line include: transmission line, tap line, the first impedance tapered line, the first coupling line, the second impedance
Transition line；
The transmission line, is used for transmission microwave signal；
The tap line, for adjusting the port match degree of the Microstrip Bandpass Filter, to reduce signal reflex；
First impedance tapered line and second impedance tapered line are resistance gradual changing structure, are used to eliminate impedance
The reflection signal discontinuously generated, and on the basis of reducing parasitic passband frequency, filter out higher hamonic wave.
Preferably, the characteristic impedance of the transmission line is 50 Ω, width 1.54mm；
The tap line width is 0.8mm, length 3.59mm；
The horizontal plane angle of first impedance tapered line is 166 °, length 1.03mm；
First Coupled Line Length of Band is 5.77mm, width 0.3mm, spacing 0.2mm；
The horizontal plane angle of second impedance tapered line is 166 °, length 1.03mm.
Preferably, the impedance transition mechanism hair clip type microstrip line passes through the outer surface of copper foil etching process and the support construction
Matching installation.
Preferably, the support construction is high frequency plate.
Preferably, the impedance transition mechanism hair clip type microstrip line with a thickness of 0.035mm；
The high frequency plate is Roers4350B, dielectric constant 3.66, with a thickness of 0.254mm；
The metal flat is copper foil material, with a thickness of 0.035mm.
Compared with prior art, the application has the beneficial effect that
In this application, the impedance transition mechanism hair clip type microstrip line in Microstrip Bandpass Filter can reduce parasitic passband
On the basis of frequency, higher hamonic wave is filtered out, since impedance transition mechanism hair clip type microstrip line is by reducing parasitic passband frequency, makes parasitism
Frequency of the band connection frequency far from higher hamonic wave reduces the interference that parasitic passband filters out higher hamonic wave, and then improves and inhibit high order
The effect of harmonic wave.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the schematic top plan view of the simulation model of Microstrip Bandpass Filter provided by the present application；
Fig. 2 is the simulation curve schematic diagram that Microstrip Bandpass Filter provided by the present application inhibits higher hamonic wave；
Fig. 3 is the simulation curve schematic diagram of insertion loss in Microstrip Bandpass Filter passband provided by the present application；
Fig. 4 is the simulation model top view of impedance transition mechanism hair clip type microstrip line provided by the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
In the present embodiment, referring to Figure 1, it illustrates the simulation models of Microstrip Bandpass Filter provided by the present application
Schematic top plan view, as shown in Figure 1, Microstrip Bandpass Filter includes: impedance transition mechanism hair clip type microstrip line 1, support construction 2 and gold
Belong to plane 3.
The outer surface Matching installation of the impedance transition mechanism hair clip type microstrip line 1 and the support construction 2.
Be equipped with the impedance transition mechanism hair clip type microstrip line 1 support construction 2 and 3 Matching installation of metal flat.
The impedance transition mechanism hair clip type microstrip line 1, for it is humorous to filter out high order on the basis of reducing parasitic passband frequency
Wave.
In the present embodiment, impedance transition mechanism hair clip type microstrip line 1 is the transmission line group by two different characteristic impedance Zs 1 and Z2
It closing, the total length of both lines is half-wavelength, and uses grading structure in the junction of two different characteristic impedance lines,
Signal reflection phenomenon caused by impedance discontinuity is eliminated, by adjusting the ratio of Z1/Z2, parasitic passband frequency can be made far from high
Subfrequency.
The support construction 2 is used to support the impedance transition mechanism hair clip type microstrip line 1 and the metal flat 3.
The metal flat 3, it is right for the reference horizontal plane of manufacturing as signal in the impedance transition mechanism hair clip type microstrip line 1
Signal flows back in the impedance transition mechanism hair clip type microstrip line 1.
In this application, the impedance transition mechanism hair clip type microstrip line 1 in Microstrip Bandpass Filter can reduce parasitic lead to
On the basis of band frequency, higher hamonic wave is filtered out, since impedance transition mechanism hair clip type microstrip line 1 is by reducing parasitic passband frequency, is made
Frequency of the parasitic passband frequency far from higher hamonic wave reduces the interference that parasitic passband filters out higher hamonic wave, and then improves and inhibit
The effect of higher hamonic wave.
Fig. 2 is referred to, it illustrates the simulation curve schematic diagram that Microstrip Bandpass Filter inhibits higher hamonic wave, such as Fig. 2
Shown, m4 is working frequency 5.83 or the second harmonic of 5.84GHz, this second harmonic frequency is 11.6GHz；M5 is working frequency
The triple-frequency harmonics of 5.83 or 5.84GHz, this third harmonic frequencies are 17.4GHz, and it is parasitic logical for being marked with the wave of m1, m2 and m3
The frequency of band, parasitic passband is reduced, so that second harmonic is suppressed 37dB, triple-frequency harmonics is suppressed 26dB, improves two
Secondary and triple-frequency harmonics inhibitory effect.
Meanwhile Microstrip Bandpass Filter provided in this embodiment is also equipped in passband that Insertion Loss is small, size is small, it is light-weight,
The features such as low cost, easy processing.
Fig. 3 is referred to, it illustrates the simulation curve schematic diagram of insertion loss in Microstrip Bandpass Filter passband, such as Fig. 3
Shown, the line of 9 instructions is filter transfer characteristic S21, three dB bandwidth 5.4GHz-6.4GHz, in 5.6GHz-6.2GHz band
Insertion loss is less than 1dB；The line of 10 instructions is port of wave filter return loss S11, in 5.6GHz-6.2GHz in-band insertion loss
Less than -10dB.
In the present embodiment, the impedance transition mechanism hair clip type microstrip line 1 and the outer surface Matching installation of the support construction 2
There are many modes, can specifically include but is not limited to the upper of the impedance transition mechanism hair clip type microstrip line 1 and the support construction 2
Surface matching installation；Or, the lower surface Matching installation of the impedance transition mechanism hair clip type microstrip line 1 and the support construction 2；Or,
The impedance transition mechanism hair clip type microstrip line 1 upper and lower surfaces Matching installation with the support construction 2 respectively.
It should be noted that the impedance transition mechanism hair clip type microstrip line 1 respectively with the upper surface of the support construction 2 and under
Surface matching installation means that the equal Matching installation of upper and lower surfaces of the support construction 2 has impedance transition mechanism hair clip type micro-strip
Line 1.This mounting means, increases the quantity of impedance transition mechanism hair clip type microstrip line 1, and the effect for filtering out higher hamonic wave is more preferable.
In the present embodiment, based on the impedance transition mechanism hair clip type microstrip line 1 respectively with the upper surface of the support construction 2 and
The mode of lower surface Matching installation, be equipped with the impedance transition mechanism hair clip type microstrip line 1 support construction 2 and the metal flat
3 Matching installations can specifically include but be not limited under the support construction 2 for being equipped with the impedance transition mechanism hair clip type microstrip line 1
Surface and 3 Matching installation of metal flat.
In another embodiment of the application, it is situated between to the specific structure of above-mentioned impedance transition mechanism hair clip type microstrip line 1
It continues, refers to Fig. 4, it illustrates the simulation model top views of impedance transition mechanism hair clip type microstrip line 1, as shown in figure 4, the impedance
Gradual change hair clip type microstrip line 1 is bilateral symmetry, the left-half and right half part of the impedance transition mechanism hair clip type microstrip line 1
It include: transmission line 11, tap line 12, the first impedance tapered line 13, the first coupling line 14, the second impedance tapered line 15.
The transmission line 11, is used for transmission microwave signal.
The tap line 12, for adjusting the port match degree of the Microstrip Bandpass Filter, to reduce signal reflex.
First impedance tapered line 13 and second impedance tapered line 15 are resistance gradual changing structure, are used to eliminate
The reflection signal that impedance discontinuity generates, and on the basis of reducing parasitic passband frequency, filter out higher hamonic wave.
In the present embodiment, to transmission line 11, tap line 12, the first impedance tapered line 13, the first coupling line 14 and the second resistance
The specific structure of anti-transition line 15 is introduced, specific as follows:
The characteristic impedance of the transmission line 11 is 50 Ω, width 1.54mm；
12 width of tap line is 0.8mm, length 3.59mm；
The horizontal plane angle of first impedance tapered line 13 is 166 °, length 1.03mm；
First coupling line, 14 length is 5.77mm, width 0.3mm, spacing 0.2mm；
The horizontal plane angle of second impedance tapered line 15 is 166 °, length 1.03mm.
It should be noted that transmission line 11, tap line 12, the first impedance tapered line 13, the first coupling line 14 and the second resistance
The specific structure of anti-transition line 15 is not limited to structure exemplified by the present embodiment, transmission line 11, tap line 12, the first impedance
The specific structure of transition line 13, the first coupling line 14 and the second impedance tapered line 15 can be adjusted according to actual needs.
In another embodiment of the application, it is situated between to the mounting process of the impedance transition mechanism hair clip type microstrip line 1
It continues, specific as follows:
The impedance transition mechanism hair clip type microstrip line 1 is matched by copper foil etching process with the outer surface of the support construction 2
Installation.
Wherein, the impedance transition mechanism hair clip type microstrip line 1 can also pass through the appearance of other techniques and the support construction 2
Face Matching installation, herein without limiting one by one.
In the present embodiment, the support construction 2 can specifically include but be not limited to high frequency plate.
In above-mentioned Microstrip Bandpass Filter, the impedance transition mechanism hair clip type microstrip line 1 with a thickness of 0.035mm；
The high frequency plate is Roers4350B, dielectric constant 3.66, with a thickness of 0.254mm；
The metal flat 3 is copper foil material, with a thickness of 0.035mm.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For device class embodiment, since it is basically similar to the method embodiment, so being described relatively simple, related place ginseng
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
A kind of Microstrip Bandpass Filter provided herein is described in detail above, tool used herein
The principle and implementation of this application are described for body example, the above embodiments are only used to help understand this Shen
Method and its core concept please；At the same time, for those skilled in the art, according to the thought of the application, specific real
Apply in mode and application range that there will be changes, in conclusion the content of the present specification should not be construed as the limit to the application
System.
Claims (8)
1. a kind of Microstrip Bandpass Filter characterized by comprising impedance transition mechanism hair clip type microstrip line, support construction and gold
Belong to plane；
The outer surface Matching installation of the impedance transition mechanism hair clip type microstrip line and the support construction；
Be equipped with the impedance transition mechanism hair clip type microstrip line support construction and the metal flat Matching installation；
The impedance transition mechanism hair clip type microstrip line, for filtering out higher hamonic wave on the basis of reducing parasitic passband frequency；
The support construction is used to support the impedance transition mechanism hair clip type microstrip line and the metal flat；
The metal flat, for the reference horizontal plane of manufacturing as signal in the impedance transition mechanism hair clip type microstrip line, to the resistance
Signal flows back in anti-gradual change hair clip type microstrip line.
2. Microstrip Bandpass Filter according to claim 1, which is characterized in that the impedance transition mechanism hair clip type microstrip line
With the outer surface Matching installation of the support construction, comprising:
The impedance transition mechanism hair clip type microstrip line respectively with the upper and lower surfaces Matching installation of the support construction.
3. Microstrip Bandpass Filter according to claim 2, which is characterized in that be equipped with the impedance transition mechanism hair clip type
The support construction of microstrip line and the metal flat Matching installation, comprising:
Be equipped with the support construction of the impedance transition mechanism hair clip type microstrip line lower surface and the metal flat Matching installation.
4. Microstrip Bandpass Filter according to claim 1 to 3, which is characterized in that the impedance transition mechanism hair
Clip-type microstrip line is bilateral symmetry, and the left-half and right half part of the impedance transition mechanism hair clip type microstrip line include:
Transmission line, tap line, the first impedance tapered line, the first coupling line, the second impedance tapered line；
The transmission line, is used for transmission microwave signal；
The tap line, for adjusting the port match degree of the Microstrip Bandpass Filter, to reduce signal reflex；
First impedance tapered line and second impedance tapered line are resistance gradual changing structure, are used to elimination impedance and do not connect
The continuous reflection signal generated, and on the basis of reducing parasitic passband frequency, filter out higher hamonic wave.
5. Microstrip Bandpass Filter according to claim 4, which is characterized in that the characteristic impedance of the transmission line is 50
Ω, width 1.54mm；
The tap line width is 0.8mm, length 3.59mm；
The horizontal plane angle of first impedance tapered line is 166 °, length 1.03mm；
First Coupled Line Length of Band is 5.77mm, width 0.3mm, spacing 0.2mm；
The horizontal plane angle of second impedance tapered line is 166 °, length 1.03mm.
6. Microstrip Bandpass Filter according to claim 1 to 3, which is characterized in that the impedance transition mechanism hair
Clip-type microstrip line passes through the outer surface Matching installation of copper foil etching process and the support construction.
7. Microstrip Bandpass Filter according to claim 6, which is characterized in that the support construction is high frequency plate.
8. Microstrip Bandpass Filter according to claim 7, which is characterized in that the impedance transition mechanism hair clip type microstrip line
With a thickness of 0.035mm；
The high frequency plate is Roers4350B, dielectric constant 3.66, with a thickness of 0.254mm；
The metal flat is copper foil material, with a thickness of 0.035mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463918.3A CN109149027A (en) | 2017-06-19 | 2017-06-19 | A kind of Microstrip Bandpass Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463918.3A CN109149027A (en) | 2017-06-19 | 2017-06-19 | A kind of Microstrip Bandpass Filter |
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| Publication Number | Publication Date |
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| CN109149027A true CN109149027A (en) | 2019-01-04 |
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ID=64804376
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| CN201710463918.3A Pending CN109149027A (en) | 2017-06-19 | 2017-06-19 | A kind of Microstrip Bandpass Filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555685A (en) * | 2021-07-22 | 2021-10-26 | 维沃移动通信有限公司 | Electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1296406A1 (en) * | 2001-09-21 | 2003-03-26 | Alcatel | Second harmonic spurious mode suppression in half-wave resonators, with application to microwave filtering structures |
| US20100301970A1 (en) * | 2009-05-26 | 2010-12-02 | Che-Ming Wang | Self-matching band-pass filter and related frequency down converter |
| CN204333186U (en) * | 2014-12-24 | 2015-05-13 | 南京信息工程大学 | A kind of hair clip cross-coupling band pass filter |
| CN206931690U (en) * | 2017-06-19 | 2018-01-26 | 北京握奇智能科技有限公司 | A kind of Microstrip Bandpass Filter |
-
2017
- 2017-06-19 CN CN201710463918.3A patent/CN109149027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1296406A1 (en) * | 2001-09-21 | 2003-03-26 | Alcatel | Second harmonic spurious mode suppression in half-wave resonators, with application to microwave filtering structures |
| US20100301970A1 (en) * | 2009-05-26 | 2010-12-02 | Che-Ming Wang | Self-matching band-pass filter and related frequency down converter |
| CN204333186U (en) * | 2014-12-24 | 2015-05-13 | 南京信息工程大学 | A kind of hair clip cross-coupling band pass filter |
| CN206931690U (en) * | 2017-06-19 | 2018-01-26 | 北京握奇智能科技有限公司 | A kind of Microstrip Bandpass Filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555685A (en) * | 2021-07-22 | 2021-10-26 | 维沃移动通信有限公司 | Electronic device |
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