CN204304948U - A kind of high-pass filter - Google Patents
A kind of high-pass filter Download PDFInfo
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- CN204304948U CN204304948U CN201520012297.3U CN201520012297U CN204304948U CN 204304948 U CN204304948 U CN 204304948U CN 201520012297 U CN201520012297 U CN 201520012297U CN 204304948 U CN204304948 U CN 204304948U
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Abstract
The utility model discloses a kind of high-pass filter, comprise input, output, operational amplifier OP1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1, inductance L 2 and inductance L 3, described input connects one end of inductance L 1 and one end of electric capacity C2 respectively, wherein the other end of inductance L 1 connects one end of inductance L 2 and one end of inductance L 3 respectively, the other end of inductance L 2 is by electric capacity C1 ground connection, and the other end of inductance L 3 is connected to output.Utilize inductance L 2 and electric capacity C1 ground connection, improve the rate of decay of wave filter, in passband frequency range, there is lower loss value, described electric capacity C2 and resistance R1 forms one-level filtering simultaneously, and electric capacity C3 and resistance R2 forms secondary filter, thus improves filter discrimination.
Description
Technical field
The utility model relates to a kind of wave filter, specifically a kind of high-pass filter.
Background technology
Wave filter is a kind of device or circuit of signal being had to process effect, Main Function is: allow useful signal is zero-decrement as far as possible to be passed through, the decay large as far as possible to garbage signal, be mainly used in electrical communication system, be used for eliminating various interference, producing high-quality signal of communication, is indispensable device in electronic communication system.
Utility model content
The purpose of this utility model is to provide a kind of high-pass filter, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of high-pass filter, comprise input, output, operational amplifier OP1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1, inductance L 2 and inductance L 3, described input connects one end of inductance L 1 and one end of electric capacity C2 respectively, wherein the other end of inductance L 1 connects one end of inductance L 2 and one end of inductance L 3 respectively, the other end of inductance L 2 is by electric capacity C1 ground connection, and the other end of inductance L 3 is connected to output; The other end of described electric capacity C2 connects one end of electric capacity C3 and one end of resistance R1 respectively, the other end ground connection of resistance R1, other end one end of contact resistance R2 and the input in the same way of operational amplifier OP1 respectively of described electric capacity C3, and the other end ground connection of resistance R2; The input in the same way of described operational amplifier OP1 passes through the output of resistance R3 concatenation operation amplifier OP1, and the output of operational amplifier OP1 also connects output by electric capacity C4.
As further program of the utility model: described electric capacity C2 and resistance R1 forms one-level filtering.
As the utility model further scheme: described electric capacity C3 and resistance R2 forms secondary filter.
Compared with prior art, the beneficial effects of the utility model are: utilize inductance L 2 and electric capacity C1 ground connection, improve the rate of decay of wave filter, in passband frequency range, there is lower loss value, described electric capacity C2 and resistance R1 forms one-level filtering simultaneously, and electric capacity C3 and resistance R2 forms secondary filter, thus improves filter discrimination.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of high-pass filter, comprise input 1, output 2, operational amplifier OP1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1, inductance L 2 and inductance L 3, described input 1 connects one end of inductance L 1 and one end of electric capacity C2 respectively, wherein the other end of inductance L 1 connects one end of inductance L 2 and one end of inductance L 3 respectively, the other end of inductance L 2 is by electric capacity C1 ground connection, and the other end of inductance L 3 is connected to output 2;
The other end of described electric capacity C2 connects one end of electric capacity C3 and one end of resistance R1 respectively, the other end ground connection of resistance R1, other end one end of contact resistance R2 and the input in the same way of operational amplifier OP1 respectively of described electric capacity C3, and the other end ground connection of resistance R2; The input in the same way of described operational amplifier OP1 passes through the output of resistance R3 concatenation operation amplifier OP1, and the output of operational amplifier OP1 also connects output 2 by electric capacity C4.
Wherein, utilize inductance L 2 and electric capacity C1 ground connection, improve the rate of decay of wave filter, in passband frequency range, have lower loss value, described electric capacity C2 and resistance R1 forms one-level filtering simultaneously, and electric capacity C3 and resistance R2 forms secondary filter.
A kind of high-pass filter described in this detailed description of the invention removes low-frequency component unnecessary in signal, removes the wave filter of low-frequency disturbance; In power system, with high-pass filter filtering certain and above each harmonic thereof during harmonic compensation.High-pass filter refers in vehicle-mounted power amplifier and medium, high frequency signal can be allowed to pass through and do not allow the circuit that low frequency signal passes through, its effect be the bass contribution in elimination audio signal, and enhancing middle pitch and treble contribution are to drive middle pitch and the voice unit of loudspeaker.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a high-pass filter, comprise input, output, operational amplifier OP1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, inductance L 1, inductance L 2 and inductance L 3, it is characterized in that, described input connects one end of inductance L 1 and one end of electric capacity C2 respectively, wherein the other end of inductance L 1 connects one end of inductance L 2 and one end of inductance L 3 respectively, the other end of inductance L 2 is by electric capacity C1 ground connection, and the other end of inductance L 3 is connected to output; The other end of described electric capacity C2 connects one end of electric capacity C3 and one end of resistance R1 respectively, the other end ground connection of resistance R1, other end one end of contact resistance R2 and the input in the same way of operational amplifier OP1 respectively of described electric capacity C3, and the other end ground connection of resistance R2; The input in the same way of described operational amplifier OP1 passes through the output of resistance R3 concatenation operation amplifier OP1, and the output of operational amplifier OP1 also connects output by electric capacity C4.
2. a kind of high-pass filter according to claim 1, is characterized in that, described electric capacity C2 and resistance R1 forms one-level filtering.
3. a kind of high-pass filter according to claim 1, is characterized in that, described electric capacity C3 and resistance R2 forms secondary filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012297.3U CN204304948U (en) | 2015-01-09 | 2015-01-09 | A kind of high-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012297.3U CN204304948U (en) | 2015-01-09 | 2015-01-09 | A kind of high-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204304948U true CN204304948U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520012297.3U Expired - Fee Related CN204304948U (en) | 2015-01-09 | 2015-01-09 | A kind of high-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204304948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209020A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of multiband band filter being applied to radar monitoring |
-
2015
- 2015-01-09 CN CN201520012297.3U patent/CN204304948U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209020A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of multiband band filter being applied to radar monitoring |
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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: 20150429 Termination date: 20190109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |