CN103151987A - High precision linear amplifier - Google Patents
High precision linear amplifier Download PDFInfo
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- CN103151987A CN103151987A CN2013100850995A CN201310085099A CN103151987A CN 103151987 A CN103151987 A CN 103151987A CN 2013100850995 A CN2013100850995 A CN 2013100850995A CN 201310085099 A CN201310085099 A CN 201310085099A CN 103151987 A CN103151987 A CN 103151987A
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- Prior art keywords
- resistance
- operational amplifier
- resistor
- electric capacity
- potentiometer
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- 239000003990 capacitor Substances 0.000 abstract description 27
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 239000000969 carriers Substances 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
- 230000000051 modifying Effects 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of linear amplifier, particularly relate to a kind of high-precise linear amplifier.
Background technology
The extensive use of non-permanent envelope and multi-carrier modulation technology makes the RF signal present very high peak-to-average force ratio and envelope variation fast, causes whole system to non-linear very responsive.In order to guarantee the linearity, traditional amplifier must operate at larger power output rollback point, and this makes efficiency of amplitude greatly reduce, and has increased the operating cost of NodeB.The efficient of existing amplifier and the linearity have and can not satisfy the demand.
Novel content
The high-precise linear amplifier that provides a kind of high power, high efficiency and the linearity high in order to address the above problem is provided.
The present invention is achieved by the following technical solutions:
a kind of high-precise linear amplifier comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the first transistor, transistor seconds, the first potentiometer, the second potentiometer, the 3rd potentiometer, the first resistance, the 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, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, the 19 resistance, the 20 resistance, the 21 resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, the first end of described the first resistance are output, and the second end of described the first resistance is connected with the first end of described the first potentiometer, the sliding end of described the first potentiometer respectively with the first end of described the first electric capacity, the second end of the first potentiometer be connected the second resistance first end be connected the first end of the 5th resistance and connect, the second end of described the second resistance respectively with the first end of described the 21 resistance, the emitter of transistor seconds be connected the first end of the 3rd resistance and connect, the second end of described the 3rd resistance respectively with the first end of described the 4th resistance, the first end of the second potentiometer, the first end of the sliding end of the second potentiometer and the 7th resistance connects, the second end of described the 7th resistance is connected with the second pin of described the first operational amplifier, the first pin of described the first operational amplifier is connected with the first end of described the 6th resistance, the second end of described the 6th resistance respectively with the first end of described the 5th resistance be connected the second end of the first electric capacity and be connected, the 3rd pin of described the first operational amplifier is connected with the first end of described the 9th resistance, the second end of described the 9th resistance respectively with the first end of described the 8th resistance be connected the first end of the 3rd potentiometer and be connected, the second end of described the 8th resistance respectively with the sliding end of described the 3rd potentiometer and the first end of described the tenth resistance, the first end of the 4th electric capacity be connected the 5th pin of the first operational amplifier and connect, the second end ground connection of described the 4th electric capacity, the 8th pin of described the first operational amplifier is connected with the first end of described the 3rd electric capacity, the second end of described the 3rd electric capacity is connected with power cathode after the 7th pin of the first operational amplifier is connected with being connected with the first end of described the second electric capacity respectively, the 6th pin of described the first operational amplifier respectively with the first end of described the 13 resistance be connected the first end of the 12 resistance and be connected, the second end of described the 12 resistance is connected with the first end of described the 5th electric capacity, the second end ground connection of described the 5th electric capacity, the second end of described the 13 resistance respectively with the first end of described the 14 resistance be connected the negative pole of the second operational amplifier and be connected, the output of described the second operational amplifier is connected with the base stage of described the first transistor, the collector electrode of described the first transistor respectively with the first end of described the 16 resistance be connected the first end of the 18 resistance and be connected, the second end of described the 16 resistance respectively with the second end of described the 13 resistance, the second end of the 14 resistance be connected the negative pole of the second operational amplifier and connect, the second end of described 18 resistance respectively with the first end of described the 21 resistance be connected the negative pole of the 3rd operational amplifier and be connected, the positive pole of described the 3rd operational amplifier is connected with the first end of described the 19 resistance, the second end ground connection of described the 19 resistance, the collector electrode of described the first transistor is connected with the first end of described the 17 resistance, and the second end of described the 17 resistance is connected with the 7th pin of described the first operational amplifier.
Further, the normal phase input end of described the second operational amplifier is connected with the first end of described the 6th electric capacity, the second end ground connection of described the 6th electric capacity, the inverting input of described the second operational amplifier is connected with the first end of described the 7th electric capacity, the second end ground connection of described the 7th electric capacity.
Further, the normal phase input end of described the 3rd operational amplifier is connected with the first end of the 8th electric capacity respectively, the second end ground connection of described the 8th electric capacity, the inverting input of described the 3rd operational amplifier is connected with the first end of described the 9th electric capacity, the second end ground connection of described the 9th electric capacity.
The invention has the beneficial effects as follows:
By adopting technique scheme, amplification accuracy of the present invention and the linearity are high, have improved the operating efficiency of amplifier, can satisfy in NodeB the requirement to the linearity and power output.
Description of drawings
Fig. 1 is the circuit diagram of high-precise linear amplifier of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and the specific embodiments:
as shown in Figure 1, high-precise linear amplifier of the present invention, comprise the first operational amplifier A 1, the second operational amplifier A 2, the 3rd operational amplifier A 3, the first transistor VT1, transistor seconds VT2, the first potentiometer RP1, the second potentiometer RP2, the 3rd potentiometer RP3, the first resistance R 1, the 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, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4 and the 5th capacitor C 5, the first end of described the first resistance R 1 is output, the second end of described the first resistance R 2 is connected with the first end of described the first potentiometer RP1, the sliding end of described the first potentiometer RP1 respectively with the first end of described the first capacitor C 1, the second end of the first potentiometer RP1 be connected the second resistance R 2 first end be connected the first end of the 5th resistance R 5 and connect, the second end of described the second resistance R 2 respectively with the first end of described the 21 resistance R 21, the emitter of transistor seconds VT2 be connected the first end of the 3rd resistance R 3 and connect, the second end of described the 3rd resistance R 3 respectively with the first end of described the 4th resistance R 4, the first end of the second potentiometer RP2, the first end of the sliding end of the second potentiometer RP2 and the 7th resistance R 7 connects, the second end of described the 7th resistance R 7 is connected with the second pin of described the first operational amplifier A 1, the first pin of described the first operational amplifier A 1 is connected with the first end of described the 6th resistance R 6, the second end of described the 6th resistance R 6 respectively with the first end of described the 5th resistance R 5 be connected the second end of the first capacitor C 1 and be connected, the 3rd pin of described the first operational amplifier A 1 is connected with the first end of described the 9th resistance R 9, the second end of described the 9th resistance R 9 respectively with the first end of described the 8th resistance R 8 be connected the first end of the 3rd potentiometer RP3 and be connected, the second end of described the 8th resistance R 8 respectively with the sliding end of described the 3rd potentiometer RP3 and the first end of described the tenth resistance R 10, the first end of the 4th capacitor C 4 be connected the 5th pin of the first operational amplifier A 1 and connect, the second end ground connection of described the 4th capacitor C 4, the 8th pin of described the first operational amplifier A 1 is connected with the first end of described the 3rd capacitor C 3, the second end of described the 3rd capacitor C 3 is connected with power cathode after the 7th pin of the first operational amplifier A 1 is connected with being connected with the first end of described the second capacitor C 2 respectively, the 6th pin of described the first operational amplifier A 1 respectively with the first end of described the 13 resistance R 13 be connected the first end of the 12 resistance R 12 and be connected, the second end of described the 12 resistance R 12 is connected with the first end of described the 5th capacitor C 5, the second end ground connection of described the 5th capacitor C 5, the second end of described the 13 resistance R 13 respectively with the first end of described the 14 resistance R 14 be connected the negative pole of the second operational amplifier A 2 and be connected, the output of described the second operational amplifier A 2 is connected with the base stage of described the first transistor VT1, the collector electrode of described the first transistor VT1 respectively with the first end of described the 16 resistance R 16 be connected the first end of the 18 resistance R 18 and be connected, the second end of described the 16 resistance R 16 respectively with the second end of described the 13 resistance R 13, the second end of the 14 resistance R 14 be connected the negative pole of the second operational amplifier A 2 and connect, the second end of described 18 resistance R 18 respectively with the first end of described the 21 resistance R 21 be connected the negative pole of the 3rd operational amplifier A 3 and be connected, the positive pole of described the 3rd operational amplifier A 3 is connected with the first end of described the 19 resistance R 19, the second end ground connection of described the 19 resistance R 19, the collector electrode of described the first transistor VT1 is connected with the first end of described the 17 resistance R 17, the second end of described the 17 resistance R 17 is connected with the 7th pin of described the first operational amplifier A 1.
The normal phase input end of described the second operational amplifier A 2 is connected with the first end of described the 6th capacitor C 6, the second end ground connection of described the 6th capacitor C 6, the inverting input of described the second operational amplifier A 2 is connected with the first end of described the 7th capacitor C 7, the second end ground connection of described the 7th capacitor C 7.
The normal phase input end of described the 3rd operational amplifier A 3 is connected with the first end of the 8th capacitor C 8 respectively, the second end ground connection of described the 8th capacitor C 8, the inverting input of described the 3rd operational amplifier A 3 is connected with the first end of described the 9th capacitor C 9, the second end ground connection of described the 9th capacitor C 9.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100850995A CN103151987A (en) | 2013-03-18 | 2013-03-18 | High precision linear amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100850995A CN103151987A (en) | 2013-03-18 | 2013-03-18 | High precision linear amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103151987A true CN103151987A (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100850995A CN103151987A (en) | 2013-03-18 | 2013-03-18 | High precision linear amplifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN103151987A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072013A (en) * | 2007-04-25 | 2007-11-14 | 山东新风光电子科技发展有限公司 | Linear amplifier and its high power pulse power source |
| US20100090766A1 (en) * | 2008-10-09 | 2010-04-15 | Maxim Integrated Products, Inc. | Self configuring output stages of precision amplifiers |
| CN101904092A (en) * | 2007-12-20 | 2010-12-01 | 北电网络有限公司 | Linearizing power amplifier |
-
2013
- 2013-03-18 CN CN2013100850995A patent/CN103151987A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072013A (en) * | 2007-04-25 | 2007-11-14 | 山东新风光电子科技发展有限公司 | Linear amplifier and its high power pulse power source |
| CN101904092A (en) * | 2007-12-20 | 2010-12-01 | 北电网络有限公司 | Linearizing power amplifier |
| US20100090766A1 (en) * | 2008-10-09 | 2010-04-15 | Maxim Integrated Products, Inc. | Self configuring output stages of precision amplifiers |
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Application publication date: 20130612 |