CN106208988A - A kind of UHF balanced radio frequency amplifier using novel π type sensor - Google Patents
A kind of UHF balanced radio frequency amplifier using novel π type sensor Download PDFInfo
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- CN106208988A CN106208988A CN201610702426.0A CN201610702426A CN106208988A CN 106208988 A CN106208988 A CN 106208988A CN 201610702426 A CN201610702426 A CN 201610702426A CN 106208988 A CN106208988 A CN 106208988A
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- resistance
- radio frequency
- uhf
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- microstrip line
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- 230000008901 benefit Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microwave Amplifiers (AREA)
Abstract
The invention discloses a kind of UHF balanced radio frequency amplifier using novel π type sensor, including input, outfan, resistance R1, R2, R3, electric capacity C, microstrip line TL2, TL4；Input is sequentially connected in series with resistance R1, outfan, resistance R1 two ends are parallel with electric capacity C, R1 and input junction and are also connected with one end of resistance R2, and the R2 other end passes through microstrip line TL2 ground connection, R1 and outfan junction are also connected with one end of resistance R3, and the R3 other end passes through microstrip line TL4 ground connection.Apply microstrip line TL2, TL4 and change the input impedance of ground section so that transmission that low frequency signal can be good and high-frequency signal is reflected.It is an advantage of the current invention that: attenuating is good；Realize the function that different frequency attenuation is inconsistent；Circuit is simple.
Description
Technical field
The present invention relates to a kind of attenuator, be specifically related to a kind of UHF balanced radio frequency using novel π type sensor and amplify
Device.
Background technology
Radio frequency amplifier is applied between antenna and rear end receiver, has radio frequency radio signal LNA or benefit
Repay the function of transmission line loss.Balanced radio frequency amplifier be for broadband signal amplify and to different frequency bands magnification ratio not
The amplifier designed together, the most different to the amplification of different frequency unlike base amplifier.Common wideband
Feature with amplifier is that low frequency amplification is high, the feature that high frequency points amplification is low, and balanced radio frequency amplifier is with front
The common wide Amplifier Design performance in face is just contrary, and low frequency amplification is low, and high frequency points amplification is high.This can answer
For special occasions.Prior art first chooses the low-noise amplifier in a broadband as input stage amplifier, then uses
Attenuator carries out full frequency band fixed attenuation, then the electric capacity effect adding a low-capacitance on attenuator is to reduce declining of high frequency points
Decrement, reaches to design the purpose of design of equalizer amplifier.
Traditional equalizer amplifier is operated in 30MHz-3000MH frequency range, and first legacy attenuator is difficult to meet 30-
The adjustable attenuation of the whole frequency range of 3000MHz, secondly, the compensation only carrying out front end decay by a coupling electric capacity can not
Meet requirement, and the output standing wave deteriorated.
Summary of the invention
The technical problem to be solved be traditional attenuator pad value in whole broadband wayward and
Adding electric capacity and be degrading output standing wave, the transmission to signal has an impact, it is therefore intended that provides a kind of and uses novel π type sensor
UHF balanced radio frequency amplifier, the radiofrequency signal of this frequency range, at 30MHz-3000MHz, is entered by solution balanced radio frequency amplifier operation
The problem that row amplifies.
The present invention is achieved through the following technical solutions:
A kind of UHF balanced radio frequency amplifier using novel π type sensor, including amplifying circuit, output circuit, its feature exists
In, also include the attenuator circuit being made up of resistance R1, R2, R3, electric capacity C, microstrip line TL2, TL4；Amplifying circuit and resistance R1, defeated
Going out circuit to be sequentially connected in series, resistance R1 two ends are parallel with electric capacity C, R1 and input junction and are also connected with one end of resistance R2, and R2 is another
Microstrip line TL2 ground connection is passed through in one end, and R1 and outfan junction are also connected with one end of resistance R3, and the R3 other end passes through microstrip line
TL4 ground connection.Apply microstrip line TL2, TL4 and change the input impedance of ground section so that the transmission that low frequency signal can be good
And high-frequency signal is reflected.It is exactly briefly that novel attenuator can carry out the decay of 10dB and to high frequency to low frequency point
The decay of point only 0.5dB.We are designed a broadband equalizer amplifier by this vital effect.Use simultaneously
Microstrip line TL2, TL4 carry out impedance transformation and realize the function that different frequency attenuation is inconsistent.
R1=50Ω、R2=R3.R1=Zc (N*N-1)/2N=50 Ω, π type attenuator is symmetrical attenuator, is mainly used in declining
Subtracting, R2=R3, Zc are output impedance.
R2=R3=82Ω.R2=R3=Zc (N+1)/(N-1)=82 Ω, Zc is output impedance.
Electric capacity C=3.3pF.: f0=1/2 π R1C.When frequency input signal is less than f0, signal opposing circuit is direct current, electricity
The total impedance on road is equal to R1;When frequency input signal more than f0 time C capacitive reactance comparatively small, total impedance be resistance also
Upper electric capacity capacitive reactance.When frequency height to a certain extent after total impedance be 0.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, a kind of UHF balanced radio frequency amplifier using novel π type sensor, uses microstrip line to carry out impedance transformation, it is achieved no
The function that same frequency attenuation is inconsistent.
2, a kind of UHF balanced radio frequency amplifier using novel π type sensor, circuit structure is simple, it is not necessary to complicated
Debugging efforts.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram.
Fig. 2 is attenuator circuit software emulation result figure of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of UHF balanced radio frequency amplifier using novel π type sensor, including input, outfan,
Resistance R1=50 Ω, R2=R3=82 Ω, electric capacity C=3.3pF, microstrip line TL2 long 10mm width 1.5mm, TL4 long 10mm width 1.5mm；Defeated
Entering end to be sequentially connected in series with resistance R1, outfan, resistance R1 two ends are parallel with electric capacity C, R1 and are also connected with resistance with input junction
One end of R2, the R2 other end passes through microstrip line TL2 ground connection, and R1 and outfan junction are also connected with one end of resistance R3, R3 another
Holding by microstrip line TL4 ground connection, electric current is inputted π type sensor by input, decays through R1, R2, R3, from outfan after C filtering
Flow out, R1, R2, R3 impedance can be adjusted by adjustment microstrip line TL2, TL4 Length x Width and reach more preferable attenuating.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (4)
1. using a UHF balanced radio frequency amplifier for novel π type sensor, including amplifying circuit, output circuit, its feature exists
In, also include the attenuator circuit being made up of resistance R1, R2, R3, electric capacity C, microstrip line TL2, TL4；Amplifying circuit and resistance R1, defeated
Going out circuit to be sequentially connected in series, resistance R1 two ends are parallel with electric capacity C, R1 and input junction and are also connected with one end of resistance R2, and R2 is another
Microstrip line TL2 ground connection is passed through in one end, and R1 and outfan junction are also connected with one end of resistance R3, and the R3 other end passes through microstrip line
TL4 ground connection.
A kind of UHF balanced radio frequency amplifier using novel π type sensor the most according to claim 1, it is characterised in that
R1=50Ω、R2=R3。
A kind of UHF balanced radio frequency amplifier using novel π type sensor the most according to claim 1, it is characterised in that
R2=R3=82Ω。
A kind of UHF balanced radio frequency amplifier using novel π type sensor the most according to claim 1, it is characterised in that
Electric capacity C=3.3pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702426.0A CN106208988A (en) | 2016-08-23 | 2016-08-23 | A kind of UHF balanced radio frequency amplifier using novel π type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702426.0A CN106208988A (en) | 2016-08-23 | 2016-08-23 | A kind of UHF balanced radio frequency amplifier using novel π type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106208988A true CN106208988A (en) | 2016-12-07 |
Family
ID=57523874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610702426.0A Withdrawn CN106208988A (en) | 2016-08-23 | 2016-08-23 | A kind of UHF balanced radio frequency amplifier using novel π type sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106208988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846560A (en) * | 2017-12-12 | 2018-03-27 | 江苏德是和通信科技有限公司 | A kind of uhf band adjustable transmitter power amplifier mechanism |
| CN109495103A (en) * | 2017-11-30 | 2019-03-19 | 成都英思嘉半导体技术有限公司 | A kind of IC being integrated with DC isolation and its application |
-
2016
- 2016-08-23 CN CN201610702426.0A patent/CN106208988A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109495103A (en) * | 2017-11-30 | 2019-03-19 | 成都英思嘉半导体技术有限公司 | A kind of IC being integrated with DC isolation and its application |
| CN107846560A (en) * | 2017-12-12 | 2018-03-27 | 江苏德是和通信科技有限公司 | A kind of uhf band adjustable transmitter power amplifier mechanism |
| CN107846560B (en) * | 2017-12-12 | 2024-06-11 | 江苏德是和通信科技有限公司 | UHF frequency band is with adjustable transmitter power amplifier mechanism |
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161207 |