CN204633724U - A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector - Google Patents
A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector Download PDFInfo
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- CN204633724U CN204633724U CN201520176136.8U CN201520176136U CN204633724U CN 204633724 U CN204633724 U CN 204633724U CN 201520176136 U CN201520176136 U CN 201520176136U CN 204633724 U CN204633724 U CN 204633724U
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- resistance
- electric capacity
- low noise
- binding post
- reception antenna
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Abstract
The rearmounted amplifying circuit of reception antenna of novel intelligent metal detector, the rearmounted amplifying circuit of reception antenna of described novel intelligent metal detector comprises single-chip microcomputer and low noise amplifier.The utility model is strong to the low noise amplification action effect of signal, improves signal to noise ratio; Described resistance R101 provides direct current supply for reception antenna inside pre-low-noise amplifier; Described electric capacity C101 is used for isolated DC; Described electric capacity C102 has low-pass filtering effect; Described resistance R111, resistance R110 dividing potential drop provide the input of rear class low noise amplification to monitor; Described resistance R108, resistance R107 dividing potential drop provide rear class low noise amplification to export and monitor.
Description
Technical field
The utility model relates to signal processing circuit, is specifically related to a kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector.
Background technology
Signal processing circuit is mainly for the outer treatment circuit of analog signal, groundwork realizes the filtering of excitation source signal and Received signal strength and amplifies process, reduce interference noise by hardware device as far as possible, for follow-up lays the foundation to the identifying processing of echo signal, improve the stability of a system.
The rearmounted amplifying circuit of Received signal strength, it is positioned at reception antenna output, mainly in order to before signal passes through coaxial cable, realizes the low noise amplification of signal, improves signal to noise ratio.And existing Received signal strength pre-amplification circuit is not strong to the low noise amplification action effect of signal, noise is smaller.
Utility model content
For above the deficiencies in the prior art, the utility model provides a kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector.
A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector, the rearmounted amplifying circuit of reception antenna of described novel intelligent metal detector comprises single-chip microcomputer and low noise amplifier, described single-chip microcomputer comprises binding post a and binding post b, ground connection after described binding post a two pins in parallel, described binding post a mono-pin meets electric capacity C107 respectively, one end of electric capacity C106 and the negative pole-VCC of power supply, described binding post a mono-pin is ground connection and electric capacity C107 respectively, the other end of electric capacity C106 and electric capacity C105, one end of electric capacity C104, described binding post a mono-pin meets electric capacity C105 respectively, the other end of electric capacity C104 and the positive pole VCC of power supply, one end of described binding post a mono-pin difference connecting resistance R101 and electric capacity C101, the positive pole VCC of another termination power of described resistance R101, the other end connecting resistance R102 respectively of described electric capacity C101, electric capacity C102, one end of resistance R103, described resistance R102, ground connection after the other end parallel connection of electric capacity C102, the inverting input of another termination low noise amplifier of described resistance R103, the negative supply of described low noise amplifier and positive supply meet the negative pole-VCC of power supply and the positive pole VCC of power supply respectively, the normal phase input end connecting resistance R104 of described low noise amplifier and one end of resistance R105, the other end ground connection of described resistance R104, the output of another termination low noise amplifier of described resistance R105 and one end of resistance R106, another termination capacitor C103 of described resistance R106 and one end of resistance R107, the other end connecting resistance R109 of described resistance R107 and one end of resistance R108 and binding post b, the other end ground connection of described resistance R108 and one end of resistance R110, one end of the other end connecting resistance R111 of described resistance R110 and binding post b, another termination capacitor C101 one end of described resistance R111, the other end of another termination capacitor C103 of described resistance R109 and binding post b, one pin ground connection of described single-chip microcomputer.
Described low noise amplifier is TL072.
Described resistance R101 is used for providing direct current supply for low noise operational amplifier.
Described resistance R111 and resistance R110 monitors for providing the input of low noise amplifier.
Described resistance R107 and resistance R108 monitors for providing the output of low noise amplifier.
The beneficial effects of the utility model are: the utility model is strong to the low noise amplification action effect of signal, improves signal to noise ratio; Described resistance R101 provides direct current supply for reception antenna inside pre-low-noise amplifier; Described electric capacity C101 is used for isolated DC; Described electric capacity C102 has low-pass filtering effect; Described resistance R111, resistance R110 dividing potential drop provide the input of rear class low noise amplification to monitor; Described resistance R108, resistance R107 dividing potential drop provide rear class low noise amplification to export and monitor.
Accompanying drawing explanation
Fig. 1 is the rearmounted amplification circuit structure schematic diagram of reception antenna of a kind of novel intelligent of the utility model metal detector.
Embodiment
Illustrate below in conjunction with embodiment and accompanying drawing and the utility model is described in further details.
As shown in Figure 1, a kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector, the rearmounted amplifying circuit of reception antenna of described novel intelligent metal detector comprises single-chip microcomputer and low noise amplifier, described single-chip microcomputer comprises binding post a and binding post b, ground connection after a described binding post a two pins in parallel, described binding post a mono-pin meets electric capacity C107 respectively, one end of electric capacity C106 and the negative pole-VCC of power supply, described binding post a mono-pin is ground connection and electric capacity C107 respectively, the other end of electric capacity C106 and electric capacity C105, one end of electric capacity C104, described binding post a mono-pin meets electric capacity C105 respectively, the other end of electric capacity C104 and the positive pole VCC of power supply, one end of described binding post a mono-pin difference connecting resistance R101 and electric capacity C101, the positive pole VCC of another termination power of described resistance R101, the other end connecting resistance R102 respectively of described electric capacity C101, electric capacity C102, one end of resistance R103, described resistance R102, ground connection after the other end parallel connection of electric capacity C102, the inverting input of another termination low noise amplifier of described resistance R103, the negative supply of described low noise amplifier and positive supply meet the negative pole-VCC of power supply and the positive pole VCC of power supply respectively, the normal phase input end connecting resistance R104 of described low noise amplifier and one end of resistance R105, the other end ground connection of described resistance R104, the output of another termination low noise amplifier of described resistance R105 and one end of resistance R106, another termination capacitor C103 of described resistance R106 and one end of resistance R107, the other end connecting resistance R109 of described resistance R107 and one end of resistance R108 and binding post b, the other end ground connection of described resistance R108 and one end of resistance R110, one end of the other end connecting resistance R111 of described resistance R110 and binding post b, another termination capacitor C101 one end of described resistance R111, the other end of another termination capacitor C103 of described resistance R109 and binding post b, one pin ground connection of described single-chip microcomputer, the low noise amplification action effect of the utility model to signal is strong, improve signal to noise ratio.
Particularly, described low noise amplifier is TL072.Described resistance R101 provides direct current supply for low noise amplifier; Described electric capacity C101 is used for isolated DC; Described electric capacity C102 has low-pass filtering effect; Described resistance R111, resistance R110 dividing potential drop provide low noise amplifier input to monitor; Described resistance R108, resistance R107 dividing potential drop provide low noise amplifier to export and monitor.
Following technique effect can be realized by the utility model:
The utility model is strong to the low noise amplification action effect of signal, improves signal to noise ratio; Described resistance R101 provides direct current supply for reception antenna inside pre-low-noise amplifier; Described electric capacity C101 is used for isolated DC; Described electric capacity C102 has low-pass filtering effect; Described resistance R111, resistance R110 dividing potential drop provide the input of rear class low noise amplification to monitor; Described resistance R108, resistance R107 dividing potential drop provide rear class low noise amplification to export and monitor.
Claims (5)
1. the rearmounted amplifying circuit of the reception antenna of a novel intelligent metal detector, it is characterized in that the rearmounted amplifying circuit of reception antenna of described novel intelligent metal detector comprises single-chip microcomputer and low noise amplifier, described single-chip microcomputer comprises binding post a and binding post b, ground connection after described binding post a two pins in parallel, described binding post a mono-pin meets electric capacity C107 respectively, one end of electric capacity C106 and the negative pole-VCC of power supply, described binding post a mono-pin is ground connection and electric capacity C107 respectively, the other end of electric capacity C106 and electric capacity C105, one end of electric capacity C104, described binding post a mono-pin meets electric capacity C105 respectively, the other end of electric capacity C104 and the positive pole VCC of power supply, one end of described binding post a mono-pin difference connecting resistance R101 and electric capacity C101, the positive pole VCC of another termination power of described resistance R101, the other end connecting resistance R102 respectively of described electric capacity C101, electric capacity C102, one end of resistance R103, described resistance R102, ground connection after the other end parallel connection of electric capacity C102, the inverting input of another termination low noise amplifier of described resistance R103, the negative supply of described low noise amplifier and positive supply meet the negative pole-VCC of power supply and the positive pole VCC of power supply respectively, the normal phase input end connecting resistance R104 of described low noise amplifier and one end of resistance R105, the other end ground connection of described resistance R104, the output of another termination low noise amplifier of described resistance R105 and one end of resistance R106, another termination capacitor C103 of described resistance R106 and one end of resistance R107, the other end connecting resistance R109 of described resistance R107 and one end of resistance R108 and binding post b, the other end ground connection of described resistance R108 and one end of resistance R110, one end of the other end connecting resistance R111 of described resistance R110 and binding post b, another termination capacitor C101 one end of described resistance R111, the other end of another termination capacitor C103 of described resistance R109 and binding post b, one pin ground connection of described single-chip microcomputer.
2. the rearmounted amplifying circuit of reception antenna of a kind of novel intelligent metal detector according to claim 1, is characterized in that described low noise amplifier is TL072.
3. the rearmounted amplifying circuit of reception antenna of a kind of novel intelligent metal detector according to claim 1, is characterized in that described resistance R101 is for providing direct current supply for low noise operational amplifier.
4. the rearmounted amplifying circuit of reception antenna of a kind of novel intelligent metal detector according to claim 1, is characterized in that described resistance R111 and resistance R110 monitors for providing the input of low noise amplifier.
5. the rearmounted amplifying circuit of reception antenna of a kind of novel intelligent metal detector according to claim 1, is characterized in that described resistance R107 and resistance R108 monitors for providing the output of low noise amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176136.8U CN204633724U (en) | 2015-03-26 | 2015-03-26 | A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176136.8U CN204633724U (en) | 2015-03-26 | 2015-03-26 | A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633724U true CN204633724U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520176136.8U Expired - Fee Related CN204633724U (en) | 2015-03-26 | 2015-03-26 | A kind of rearmounted amplifying circuit of reception antenna of novel intelligent metal detector |
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| Country | Link |
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| CN (1) | CN204633724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660215A (en) * | 2018-10-31 | 2019-04-19 | 西安电子科技大学 | A kind of integrated circuit of wide frequency RF low-noise amplifier |
-
2015
- 2015-03-26 CN CN201520176136.8U patent/CN204633724U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660215A (en) * | 2018-10-31 | 2019-04-19 | 西安电子科技大学 | A kind of integrated circuit of wide frequency RF low-noise amplifier |
| CN109660215B (en) * | 2018-10-31 | 2021-07-16 | 西安电子科技大学 | Integrated circuit of broadband radio frequency low noise amplifier |
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| Date | Code | Title | Description |
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| 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: 20150909 Termination date: 20160326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |