CN103684296A - High-confidentiality amplifying circuit - Google Patents
High-confidentiality amplifying circuit Download PDFInfo
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- CN103684296A CN103684296A CN201310613149.2A CN201310613149A CN103684296A CN 103684296 A CN103684296 A CN 103684296A CN 201310613149 A CN201310613149 A CN 201310613149A CN 103684296 A CN103684296 A CN 103684296A
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Abstract
The invention discloses a high-confidentiality amplifying circuit comprising resistors R1, R2, R3, R4, R5, R6 and R7, an operational amplifier A1, an operational amplifier A2, and capacitors C1 and C2. The resistor R1 is connected with the reverse input and signal input ends of the operational amplifier A1. The output end of the resistor R2 is simultaneously connected with a codirectional input end of the operational amplifier A1, the capacitor C1 and the resistor R3. The input end of the resistor R2 is connected with the signal input end of the operational amplifier A1. The resistor R5 is connected between the output end of the operational amplifier A1 and the codirectional input end of the operational amplifier A2. Two ends of the resistor R4 are connected with the reverse input end of the operational amplifier A1 and the output end of the operational amplifier A1 respectively. The capacitor C2 is parallelly connected to two ends of the resistor R4. According to the principle, an alternating current signal is input to a filtered signal, the signal is changed and output through an adder, the changed transmitted signal is less susceptible to jamming or intercepting, and confidentiality is good.
Description
Technical field
The present invention relates to filtering field, be specifically related to the amplifying circuit of good confidentiality.
Background technology
Radio communication mainly comprises microwave communication and satellite communication.Microwave is a kind of radio wave, and the distance that it transmits generally only has tens kms.But the frequency band of microwave is very wide, message capacity is very large.Microwave communication will be built a microwave relay station every tens kms.Satellite communication is to utilize communication satellite between two or more earth stations or between moving body, to set up on the ground microwave communication contact as relay station.Radio communication (Wireless Communication) is a kind of communication mode that utilizes characteristic that electromagnetic wave signal can be propagated in free space to carry out information exchange, in information communication field, with fastest developing speed, most widely used was exactly wireless communication technology in recent years.The radio communication realizing in movement is commonly referred to as again mobile communication, and people are collectively referred to as wireless mobile communications the two.For some special communications fields, if signal is directly transmitted, transmission quality is unstable, and signal is easily disturbed or is is easily intercepted and captured, and confidentiality is poor.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, the amplifying circuit of good confidentiality is provided, and the AC signal of filtering signal input to output, exports after realizing the change of signal by adder again, signal transmission after change is difficult for being disturbed or is intercepted and captured good confidentiality.
For solving above-mentioned technical problem, the present invention is by the following technical solutions: the amplifying circuit of good confidentiality, comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, operational amplifier A 1, operational amplifier A 2, capacitor C 1 and capacitor C 2, reverse input end and the signal input part of described resistance R 1 concatenation operation amplifier A1; Input in the same way, capacitor C 1 and the resistance R 3 of described resistance R 2 outputs concatenation operation simultaneously amplifier A1, the input of resistance R 2 connects signal input part; Described resistance R 5 is connected to output and in the same way between the input of operational amplifier A 2 of operational amplifier A 1; Described resistance R 4 two ends are reverse input end and the output of concatenation operation amplifier A1 respectively, and capacitor C 2 is connected in parallel on the two ends of resistance R 4; Described resistance R 7 two ends are reverse input end and the output of concatenation operation amplifier A2 respectively; Described resistance R 6 is connected between power supply and the reverse input end of operational amplifier A 2.Input signal enters by resistance R 1 and resistance R 2 filter circuit that capacitor C 1, capacitor C 2, resistance R 3, resistance R 4 and operational amplifier A 1 form, then by adder below, while input exchange signal, signal is amplified, add an amplitude, after range of signal is changed, by the output of operational amplifier A 2, export again, make signal transmission be difficult for being disturbed or intercepted and captured, improve confidentiality.
The input in the same way of described operational amplifier A 1 is all connected 15V power supply with reverse input end.Guarantee the abundance of power supply.
The input in the same way of described operational amplifier A 2 connects 5V power supply.
The resistance of described resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 5 equates.Realize the amplification of best filter effect and signal.
The resistance of described resistance R 7 is less than the resistance of resistance R 6.Filtering signal is changed.
Compared with prior art, the invention has the beneficial effects as follows: first input signal carries out filtering by the filter circuit of front end, then by adder below, by inputting an AC signal to adder, signal being amplified, and then add an amplitude, is output after the scope of input signal changes, signal transmission is difficult for being disturbed or is intercepted and captured, and confidentiality improves.
Accompanying drawing explanation
Fig. 1 is basic circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited to this.
Embodiment:
As shown in Figure 1, the present invention includes resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, operational amplifier A 1, operational amplifier A 2, capacitor C 1 and capacitor C 2, the resistance of resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 5 is equal, and the resistance of resistance R 7 is less than the resistance of resistance R 6.Reverse input end and the signal input part of the resistance R 1 concatenation operation amplifier A1 of the present embodiment; Input in the same way, capacitor C 1 and the resistance R 3 of described resistance R 2 outputs concatenation operation simultaneously amplifier A1, the input of resistance R 2 connects signal input part, and the input in the same way of operational amplifier A 1 is all connected 15V power supply with reverse input end.The resistance R 5 of the present embodiment is connected in the same way between input of the output of operational amplifier A 1 and operational amplifier A 2, and the input in the same way of operational amplifier A 2 connects 5V power supply.Resistance R 4 two ends of the present embodiment are reverse input end and the output of concatenation operation amplifier A1 respectively, and capacitor C 2 is connected in parallel on the two ends of resistance R 4; Resistance R 7 two ends are reverse input end and the output of concatenation operation amplifier A2 respectively; Resistance R 6 is connected between power supply and the reverse input end of operational amplifier A 2.
Input signal enters by resistance R 1 and resistance R 2 filter circuit that capacitor C 1, capacitor C 2, resistance R 3, resistance R 4 and operational amplifier A 1 form, then by adder below, while input exchange signal, signal is amplified, add an amplitude, after range of signal is changed, export by the output of operational amplifier A 2 again, make the signal transmission after changing be difficult for being disturbed or be intercepted and captured, the confidentiality of signal transmission is improved.
Just can realize this invention as mentioned above.
Claims (5)
1. the amplifying circuit of good confidentiality, it is characterized in that: comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, operational amplifier A 1, operational amplifier A 2, capacitor C 1 and capacitor C 2, reverse input end and the signal input part of described resistance R 1 concatenation operation amplifier A1; Input in the same way, capacitor C 1 and the resistance R 3 of described resistance R 2 outputs concatenation operation simultaneously amplifier A1, the input of resistance R 2 connects signal input part; Described resistance R 5 is connected to output and in the same way between the input of operational amplifier A 2 of operational amplifier A 1; Described resistance R 4 two ends are reverse input end and the output of concatenation operation amplifier A1 respectively, and capacitor C 2 is connected in parallel on the two ends of resistance R 4; Described resistance R 7 two ends are reverse input end and the output of concatenation operation amplifier A2 respectively; Described resistance R 6 is connected between power supply and the reverse input end of operational amplifier A 2.
2. the amplifying circuit of good confidentiality according to claim 1, is characterized in that: the input in the same way of described operational amplifier A 1 is all connected 15V power supply with reverse input end.
3. the amplifying circuit of good confidentiality according to claim 1, is characterized in that: the input in the same way of described operational amplifier A 2 connects 5V power supply.
4. the amplifying circuit of good confidentiality according to claim 1, is characterized in that: the resistance of described resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 5 equates.
5. the amplifying circuit of good confidentiality according to claim 1, is characterized in that: the resistance of described resistance R 7 is less than the resistance of resistance R 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613149.2A CN103684296A (en) | 2013-11-28 | 2013-11-28 | High-confidentiality amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613149.2A CN103684296A (en) | 2013-11-28 | 2013-11-28 | High-confidentiality amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103684296A true CN103684296A (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310613149.2A Pending CN103684296A (en) | 2013-11-28 | 2013-11-28 | High-confidentiality amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103684296A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86209022U (en) * | 1986-11-11 | 1988-03-16 | 西安交通大学 | Analog phonetic cryptographic coder |
| CN2212286Y (en) * | 1994-08-22 | 1995-11-08 | 中国石油天然气总公司通信公司 | Noise controller for satellite communication enciphered circuit |
| CN102437838A (en) * | 2010-09-03 | 2012-05-02 | 艾色拉公司 | Transmitting a signal from a power amplifier |
-
2013
- 2013-11-28 CN CN201310613149.2A patent/CN103684296A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86209022U (en) * | 1986-11-11 | 1988-03-16 | 西安交通大学 | Analog phonetic cryptographic coder |
| CN2212286Y (en) * | 1994-08-22 | 1995-11-08 | 中国石油天然气总公司通信公司 | Noise controller for satellite communication enciphered circuit |
| CN102437838A (en) * | 2010-09-03 | 2012-05-02 | 艾色拉公司 | Transmitting a signal from a power amplifier |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |