CN203180864U - Anti-mixing filter - Google Patents
Anti-mixing filter Download PDFInfo
- Publication number
- CN203180864U CN203180864U CN 201320126322 CN201320126322U CN203180864U CN 203180864 U CN203180864 U CN 203180864U CN 201320126322 CN201320126322 CN 201320126322 CN 201320126322 U CN201320126322 U CN 201320126322U CN 203180864 U CN203180864 U CN 203180864U
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- Prior art keywords
- resistance
- amplifier
- electric capacity
- capacitor
- resistor
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Abstract
The utility model discloses an anti-mixing filter comprising a first amplifier, a second amplifier, a third amplifier, a fourth amplifier, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seven resistor, an eighth resistor, a ninth resistor, a tenth resistor and an eleventh resistor. A first end of the first resistor is a voltage input end, and is connected with a first end of the first capacitor. A second end of the first resistor is respectively connected with a first end of the second resistor and a second end of the first capacitor. The anti-mixing filter has advantages of high reliability, good performance, and stable working state.
Description
Technical field
The utility model relates to a kind of filter, relates in particular to a kind of anti alias filter.
Background technology
At present, employed filter element is the same with other element in filter circuit, is imperfect also.Inductance coil has parasitic capacitance, and the electric capacity lead-in wire has stray inductance.This makes the high frequency equivalent circuit of filter become complicated, and means that the filter that uses discrete component will lose its performance when frequency surpasses a certain size.Except simple inductance filter, any low pass filter all will use shunt capacitance.The decay of desirable shunt capacitance has the characteristic that increases with the rule of ten octave 20dB with the rising of frequency.But actual electric capacity is owing to the existence of lead-in inductance, and the high frequency performance of filter is restricted, and the service behaviour of filter is affected.
The utility model content
A kind of reliability height, performance are good, the anti alias filter of stable working state with regard to being to provide in order to address the above problem for the purpose of this utility model.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of anti alias filter, comprise first amplifier, second amplifier, the 3rd amplifier, the 4th amplifier, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and the 11 resistance, first end of described first resistance is voltage input end, first end of described first resistance is connected with first end of described first electric capacity, second end of described first resistance is connected with first end of described second resistance and second end of described first electric capacity respectively, second end of described second resistance respectively with first end of described second electric capacity, first end of the in-phase input end of described second amplifier and described the 9th resistance is connected, second end of described second electric capacity is connected with first end of described the 3rd resistance and the signal output part of described first amplifier respectively, second end of described the 3rd resistance respectively with described first amplifier's inverting input, first end of described second amplifier's inverting input and described the 3rd electric capacity is connected, the in-phase input end of described first amplifier is connected with first end of described the 4th resistance and first end of described the 5th resistance respectively, second end of described the 4th resistance is connected with second end of described the 3rd electric capacity and the signal output part of described second amplifier respectively, second end of described the 5th resistance respectively with first end of described the 7th resistance, first end of described the 6th electric capacity and first end of described the 11 resistance are connected, second end of described the 7th resistance is connected with first end of described the 6th resistance and the in-phase input end of described the 3rd amplifier respectively, second end of described the 6th resistance is connected with first end of described the 5th electric capacity and the signal output part of described the 4th amplifier respectively, second end of described the 5th electric capacity respectively with first end of described the 8th resistance, described the 3rd amplifier's inverting input is connected with described the 4th amplifier's inverting input, the cathode output end of described the 4th amplifier is the circuit external connection end, the cathode output end ground connection of described the 4th amplifier, second end of described the 8th resistance is connected with second end of described the 4th electric capacity and the signal output part of described the 3rd amplifier respectively, second end of described the tenth resistance is connected with second end of described the 6th electric capacity and second end of described the 11 resistance respectively, and second end of described the tenth resistance is voltage output end.
The beneficial effects of the utility model are:
Good, the stable working state of reliability height, performance of a kind of anti alias filter of the utility model.
Description of drawings
Fig. 1 is the circuit diagram of a kind of anti alias filter of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of anti alias filter of the utility model, comprise the first amplifier U1, the second amplifier U2, the 3rd amplifier U3, the 4th amplifier U4, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10 and the 11 resistance R 11, first end of first resistance R 1 is voltage input end, first end of first resistance R 1 is connected with first end of first capacitor C 1, second end of first resistance R 1 is connected with first end of second resistance R 2 and second end of first capacitor C 1 respectively, second end of second resistance R 2 respectively with first end of second capacitor C 2, the in-phase input end of the second amplifier U2 is connected with first end of the 9th resistance R 9, second end of second capacitor C 2 is connected with first end of the 3rd resistance R 3 and the signal output part of the first amplifier U1 respectively, second end of the 3rd resistance R 3 respectively with the inverting input of the first amplifier U1, the inverting input of the second amplifier U2 is connected with first end of the 3rd capacitor C 3, the in-phase input end of the first amplifier U1 is connected with first end of the 4th resistance R 4 and first end of the 5th resistance R 5 respectively, second end of the 4th resistance R 4 is connected with second end of the 3rd capacitor C 3 and the signal output part of the second amplifier U2 respectively, second end of the 5th resistance R 5 respectively with first end of the 7th resistance R 7, first end of the 6th capacitor C 6 is connected with first end of the 11 resistance R 11, second end of the 7th resistance R 7 is connected with first end of the 6th resistance R 6 and the in-phase input end of the 3rd amplifier U3 respectively, second end of the 6th resistance R 6 is connected with first end of the 5th capacitor C 5 and the signal output part of the 4th amplifier U4 respectively, second end of the 5th capacitor C 5 respectively with first end of the 8th resistance R 8, the inverting input of the 3rd amplifier U3 is connected with the inverting input of the 4th amplifier U4, the cathode output end of the 4th amplifier U4 is the circuit external connection end, the cathode output end ground connection of the 4th amplifier U4, second end of the 8th resistance R 8 is connected with second end of the 4th capacitor C 4 and the signal output part of the 3rd amplifier U3 respectively, second end of the tenth resistance R 10 is connected with second end of the 6th capacitor C 6 and second end of the 11 resistance R 11 respectively, and second end of the tenth resistance R 10 is voltage output end.
Claims (1)
1. anti alias filter, it is characterized in that: comprise first amplifier, second amplifier, the 3rd amplifier, the 4th amplifier, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and the 11 resistance, first end of described first resistance is voltage input end, first end of described first resistance is connected with first end of described first electric capacity, second end of described first resistance is connected with first end of described second resistance and second end of described first electric capacity respectively, second end of described second resistance respectively with first end of described second electric capacity, first end of the in-phase input end of described second amplifier and described the 9th resistance is connected, second end of described second electric capacity is connected with first end of described the 3rd resistance and the signal output part of described first amplifier respectively, second end of described the 3rd resistance respectively with described first amplifier's inverting input, first end of described second amplifier's inverting input and described the 3rd electric capacity is connected, the in-phase input end of described first amplifier is connected with first end of described the 4th resistance and first end of described the 5th resistance respectively, second end of described the 4th resistance is connected with second end of described the 3rd electric capacity and the signal output part of described second amplifier respectively, second end of described the 5th resistance respectively with first end of described the 7th resistance, first end of described the 6th electric capacity and first end of described the 11 resistance are connected, second end of described the 7th resistance is connected with first end of described the 6th resistance and the in-phase input end of described the 3rd amplifier respectively, second end of described the 6th resistance is connected with first end of described the 5th electric capacity and the signal output part of described the 4th amplifier respectively, second end of described the 5th electric capacity respectively with first end of described the 8th resistance, described the 3rd amplifier's inverting input is connected with described the 4th amplifier's inverting input, the cathode output end of described the 4th amplifier is the circuit external connection end, the cathode output end ground connection of described the 4th amplifier, second end of described the 8th resistance is connected with second end of described the 4th electric capacity and the signal output part of described the 3rd amplifier respectively, second end of described the tenth resistance is connected with second end of described the 6th electric capacity and second end of described the 11 resistance respectively, and second end of described the tenth resistance is voltage output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126322 CN203180864U (en) | 2013-03-20 | 2013-03-20 | Anti-mixing filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126322 CN203180864U (en) | 2013-03-20 | 2013-03-20 | Anti-mixing filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180864U true CN203180864U (en) | 2013-09-04 |
Family
ID=49077518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126322 Expired - Fee Related CN203180864U (en) | 2013-03-20 | 2013-03-20 | Anti-mixing filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180864U (en) |
-
2013
- 2013-03-20 CN CN 201320126322 patent/CN203180864U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140320 |