CN209330069U - A kind of active biased Cascode radio frequency amplifier - Google Patents
A kind of active biased Cascode radio frequency amplifier Download PDFInfo
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- CN209330069U CN209330069U CN201920168227.5U CN201920168227U CN209330069U CN 209330069 U CN209330069 U CN 209330069U CN 201920168227 U CN201920168227 U CN 201920168227U CN 209330069 U CN209330069 U CN 209330069U
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- 239000003990 capacitor Substances 0.000 claims abstract description 54
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
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Abstract
The utility model discloses a kind of active biased Cascode radio frequency amplifiers, including transistor modular, negative feedback module, power supply module, stabilizing circuit, active bias circuit module, transistor gate stabilizing circuit module and input matching network, input matching network respectively with transistor modular, active bias circuit module is connected with negative feedback module, active bias circuit module respectively with power supply module, transistor gate stabilizing circuit module is connected with transistor modular, power supply module, transistor modular is connected with negative feedback module, and pass through capacitor C2 connection RF signal output, input matching network passes through capacitor C1 connection RF signal input end.Active biased transistor dynamic electric resistor changes under technique or high/low temperature fluctuation, to make the grid voltage of transistor in Cascode amplifier change, so that Cascode radio frequency amplifier static working current is tended towards stability, improves Cascode radio frequency amplifier performance.
Description
Technical field
The utility model relates to radio frequency amplifier technical fields, and in particular to a kind of active biased Cascode radio frequency amplification
Device.
Background technique
Radio frequency amplifier is essential device in wireless communications application, the middle frequency modulation for exporting receive-transmit system
The radiofrequency signal of system carries out power amplification, or the received small-power radiofrequency signal of antenna is carried out low noise amplification, to meet nothing
Various application demands in line communication.
Cascode (cascade) structure has low-noise factor, high-gain, high linearity and high reverse isolation etc. special
Point can effectively inhibit transistor the Miller effect, reduce influence of the output impedance to amplifier performance, thus in Amplifier Design
Middle extensive use.
In traditional Cascode radio frequency amplifier, first order transistor and second level transistor needs are provided separately directly
Galvanic electricity source, supply port is more, and chip area is larger, and manufacturing cost is higher, is unfavorable for improving chip integration.
In traditional Cascode radio frequency amplifier, transistor bias circult uses electric resistance partial pressure, in technological fluctuation or height
Under cryogenic conditions, electric resistance partial pressure value is constant, and transistor cut-in voltage and IV characteristic curve are sent out with technological fluctuation or temperature fluctuation
Changing causes amplifier chip change in gain larger.
Utility model content
For above-mentioned deficiency in the prior art, a kind of active biased Cascode radio frequency amplification provided by the utility model
Device solves the problems, such as that Cascode radio frequency amplifier performance is poor.
In order to reach above-mentioned purpose of utility model, the technical solution adopted in the utility model are as follows: a kind of active biased
Cascode radio frequency amplifier, including transistor modular, negative feedback module, power supply module, stabilizing circuit, active bias circuit mould
Block, transistor gate stabilizing circuit module and input matching network, the input matching network respectively with transistor modular, active
Biasing circuit module is connected with negative feedback module, and the active bias circuit module is steady with power supply module, transistor gate respectively
Determine circuit module to connect with transistor modular, the power supply module, transistor modular are connected with negative feedback module, and pass through capacitor
C2 connection RF signal output, the input matching network pass through capacitor C1 connection RF signal input end.
Further: the input matching network includes capacitor C3 and inductance L1, one end of the capacitor C3 respectively with electricity
Hold C1 connect with one end of inductance L1, the other end of the capacitor C3 is connected to, the other end of the inductance L1 respectively with crystalline substance
Body tube module, active bias circuit module are connected with negative feedback module.
Have the beneficial effect that input matching network is matched for amplifier input impedance using above-mentioned further scheme.
Further: the transistor modular includes the grid difference of transistor Q1 and transistor Q2, the transistor Q1
It is connect with input matching network, active bias circuit module and negative feedback module, the drain electrode of the transistor Q1 and transistor Q2
Source electrode connection, the transistor Q1 source electrode ground connection, the grid of the transistor Q2 respectively with transistor gate stabilizing circuit
Module is connected with active bias circuit module, and the drain electrode of the transistor Q2 is connect with negative feedback module and power supply module respectively.
Have the beneficial effect that transistor Q1 and transistor Q2 for amplifying radiofrequency signal using above-mentioned further scheme.
Further: the negative feedback module includes resistance R1 and capacitor C4, one end of the resistance R1 respectively with crystal
Tube module is connected with power supply module, and passes through capacitor C2 connection RF signal output, the other end and capacitor of the resistance R1
One end of C4 connects, the other end of the capacitor C4 respectively with input matching network, transistor modular and active bias circuit mould
Block connection.
Have the beneficial effect that resistance R1 determines the gain and bandwidth of amplifier using above-mentioned further scheme, capacitor C4 draws
Enter certain frequency dependence, mainly plays isolation direct current signal, by AC signal, while adjusting feedback intensity and phase
Position rises and adjusts gain flatness, expands working band, improves input and output voltage standing-wave ratio and improve the work of amplifier stability
With.
Further: the power supply module includes choke induction L2 and decoupling capacitor C5, one end of the choke induction L2
It is connect respectively with negative feedback module and transistor modular, the other end of choke induction L2 one end with decoupling capacitor C5 respectively
It is connected with active bias circuit module, and connects power vd D, the other end of the decoupling capacitor C5 is connected to ground.
Choke induction L2 is had the beneficial effect that for chokes and filtering using above-mentioned further scheme, decoupling capacitor C5 is used
In the clutter of removal d. c. voltage signal.
Further: the active bias circuit module includes resistance R2~R6, transistor Q3 and transistor Q4, the electricity
One end of resistance R2 is connect with input matching network, transistor modular and negative feedback module respectively, the other end point of the resistance R2
It is not connect with one end of the grid of transistor Q3, the drain electrode of transistor Q3 and resistance R3, the source electrode of the transistor Q3 passes through electricity
Resistance R4 is connected to ground, and the other end of the resistance R3 is connect with the source electrode of transistor Q4, the grid of the transistor Q4 and drain electrode
It is connect respectively with one end of one end of resistance R5 and resistance R6, the other end of the resistance R5 is connect with power supply module, described
The other end of resistance R6 is connect with transistor gate stabilizing circuit module and transistor modular respectively.
Using above-mentioned further scheme have the beneficial effect that resistance R2~R6 for chokes and current limliting, resistance R3, R4, R5,
Transistor Q3 and Q4 divide DC power supply, grid voltage are provided for transistor Q1 and Q2, for enhancing transistor in work
Current stability under skill fluctuation or high/low temperature fluctuation, is effectively improved Cascode amplifier performance.
Further: the transistor gate stabilizing circuit module includes resistance R7 and capacitor C6, and the one of the resistance R7
End is connect with active bias circuit module and transistor modular respectively, and the other end of the resistance R7 is connected to by capacitor C6
Ground.
Using above-mentioned further scheme have the beneficial effect that for DC power signal filtering and stable transistor Q2 it is quiet
State operating point.
The utility model has the following beneficial effects: the active bias circuit in the utility model is for enhancing transistor in technique
Current stability under fluctuation or high/low temperature fluctuation, is effectively improved Cascode amplifier performance.Transistor stabilizing circuit is for steady
The quiescent point for determining transistor increases small resistance between the grid and decoupling capacitor C6 of the transistor Q2 of Cascode amplifier
The steady resistance R7 of value, amplifier unconditional stability in wide frequency ranges can be made by adjusting the resistance.
Transistor stabilizing circuit is to improve the stability of transistor static operating point by increasing steady resistance, makes amplifier
Unconditional stability.Active bias circuit is Cascode amplifier transistor Q1 to DC power supply partial pressure by resistance and transistor
Grid voltage is provided with transistor Q2, active biased transistor dynamic electric resistor changes under technique or high/low temperature fluctuation, from
And the grid voltage of transistor in Cascode amplifier is made to change, so that Cascode radio frequency amplifier static working current is become
In stabilization, improve Cascode radio frequency amplifier performance.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram；
Fig. 2 is the circuit diagram of the utility model steady resistance position change.
Specific embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all are created using the utility model of the utility model design in the column of protection.
As shown in Figure 1, a kind of active biased Cascode radio frequency amplifier, including transistor modular, negative feedback module, confession
Electric module, stabilizing circuit, active bias circuit module, transistor gate stabilizing circuit module and input matching network, input
Distribution network is connect with transistor modular, active bias circuit module and negative feedback module respectively, active bias circuit module difference
It is connect with power supply module, transistor gate stabilizing circuit module and transistor modular, power supply module, transistor modular and negative-feedback
Module connection, and by capacitor C2 connection RF signal output, input matching network is defeated by capacitor C1 connection radiofrequency signal
Enter end.
In one embodiment of the utility model, the input matching network includes capacitor C3 and inductance L1, the electricity
The one end for holding C3 is connect with one end of capacitor C1 and inductance L1 respectively, and the other end of the capacitor C3 is connected to ground, the inductance
The other end of L1 is connect with transistor modular, active bias circuit module and negative feedback module respectively.Input matching network is used for
Amplifier input impedance matching.
In one embodiment of the utility model, transistor modular includes transistor Q1 and transistor Q2, transistor Q1
Grid connect respectively with input matching network, active bias circuit module and negative feedback module, the drain electrode of transistor Q1 and brilliant
The source electrode of body pipe Q2 connects, the source electrode ground connection of transistor Q1, the grid of transistor Q2 respectively with transistor gate stabilizing circuit mould
Block is connected with active bias circuit module, and the drain electrode of transistor Q2 is connect with negative feedback module and power supply module respectively.Transistor
Q1 and transistor Q2 is for amplifying radiofrequency signal.
In one embodiment of the utility model, negative feedback module includes resistance R1 and capacitor C4, one end of resistance R1
It is connect respectively with transistor modular and power supply module, and passes through capacitor C2 connection RF signal output, the other end of resistance R1
Connect with one end of capacitor C4, the other end of capacitor C4 respectively with input matching network, transistor modular and active bias circuit
Module connection.Resistance R1 determines the gain and bandwidth of amplifier, and capacitor C4 introduces certain frequency dependence, main to play isolation directly
Signal, the effect by AC signal are flowed, while adjusting feedback intensity and phase, is risen and is adjusted gain flatness, expands work frequency
Band improves input and output voltage standing-wave ratio and improves the effect of amplifier stability.The position of resistance R1 and capacitor C4 are interchangeable,
It will not influence the performance of negative feedback module circuit.
In one embodiment of the utility model, power supply module includes choke induction L2 and decoupling capacitor C5, chokes electricity
Sense L2 one end connect respectively with negative feedback module and transistor modular, the other end of choke induction L2 respectively with decoupling capacitor C5
One end connected with active bias circuit module, and connect power vd D, the other end of decoupling capacitor C5 is connected to ground.Chokes electricity
Feel L2 and be used for chokes and filtering, decoupling capacitor C5 is used to remove the clutter of d. c. voltage signal.
In one embodiment of the utility model, active bias circuit module include resistance R2~R6, transistor Q3 and
Transistor Q4, one end of resistance R2 are connect with input matching network, transistor modular and negative feedback module respectively, and resistance R2's is another
One end is connect with one end of the grid of transistor Q3, the drain electrode of transistor Q3 and resistance R3 respectively, and the source electrode of transistor Q3 passes through
Resistance R4 is connected to ground, and the other end of resistance R3 is connect with the source electrode of transistor Q4, and the grid of transistor Q4 and drain electrode are distinguished
It is connect with one end of one end of resistance R5 and resistance R6, the other end of resistance R5 is connect with power supply module, the other end of resistance R6
It is connect respectively with transistor gate stabilizing circuit module and transistor modular.Resistance R2~R6 be used for chokes and current limliting, resistance R3,
R4, R5, transistor Q3 and Q4 divide DC power supply, grid voltage are provided for transistor Q1 and Q2, for enhancing crystal
Current stability of the pipe under technological fluctuation or high/low temperature fluctuation, is effectively improved Cascode amplifier performance.
In one embodiment of the utility model, transistor gate stabilizing circuit module includes resistance R7 and capacitor C6,
One end of resistance R7 is connect with active bias circuit module and transistor modular respectively, and the other end of resistance R7 is connected by capacitor C6
It is connected to ground.Quiescent point for DC power signal filtering and stable transistor Q2.
In the utility model one embodiment, as shown in Fig. 2, transistor gate stabilizing circuit module include resistance R7 and
One end of capacitor C6, resistance R7 are connect with transistor modular, the other end of resistance R7 respectively with active bias circuit module and electricity
Hold one end connection of C6, the other end of the capacitor C6 is connected to ground.For DC power signal filtering and stable transistor Q2
Quiescent point.
In the above two embodiments, the position of resistance R7 does not influence the stability of transistor.
It can be made by adjusting resistance in active bias circuit module and transistor gate stabilizing circuit module and capacitor
Amplifier unconditional stability in broadband.
In the utility model one embodiment, resistance R3 and resistance R4 can be deleted according to the actual situation, transistor Q3
Multiple transistors can be become by a transistor according to the actual situation with transistor Q4.
Transistor stabilizing circuit is to improve the stability of transistor static operating point by increasing steady resistance, makes amplifier
Unconditional stability.Active bias circuit is Cascode amplifier transistor Q1 to DC power supply partial pressure by resistance and transistor
Grid voltage is provided with transistor Q2, active biased transistor dynamic electric resistor changes under technique or high/low temperature fluctuation, from
And the grid voltage of transistor in Cascode amplifier is made to change, so that Cascode radio frequency amplifier static working current is become
In stabilization, improve Cascode radio frequency amplifier performance.
Assuming that the reduction of transistor Q1, Q2 cut-in voltage will cause quiescent current to drop under technological fluctuation or high/low temperature fluctuation
Low, the reduction of transistor Q3, Q4 cut-in voltage will cause transistor Q3, Q4 equivalent resistance to increase, and make transistor by electric resistance partial pressure
Q1, Q2 grid voltage increase, and the increase of transistor Q1, Q2 grid voltage increases transistor static electric current.Therefore active biased electricity
Road adjusts amplifier quiescent current by transistor dynamic electric resistor, improves Cascode radio frequency amplifier performance.
Claims (7)
1. a kind of active biased Cascode radio frequency amplifier, which is characterized in that including transistor modular, negative feedback module, power supply
Module, stabilizing circuit, active bias circuit module, transistor gate stabilizing circuit module and input matching network, the input
Matching network is connect with transistor modular, active bias circuit module and negative feedback module respectively, the active bias circuit mould
Block is connect with power supply module, transistor gate stabilizing circuit module and transistor modular respectively, the power supply module, crystal pipe die
Block is connected with negative feedback module, and by capacitor C2 connection RF signal output, the input matching network passes through capacitor C1
Connect RF signal input end.
2. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the input pair net
Network includes capacitor C3 and inductance L1, and one end of the capacitor C3 is connect with one end of capacitor C1 and inductance L1 respectively, the capacitor
The other end of C3 is connected to ground, the other end of the inductance L1 respectively with transistor modular, active bias circuit module and negative anti-
Present module connection.
3. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the transistor modular
Including transistor Q1 and transistor Q2, the grid of the transistor Q1 respectively with input matching network, active bias circuit module
It is connected with negative feedback module, the drain electrode of the transistor Q1 is connect with the source electrode of transistor Q2, and the source electrode of the transistor Q1 connects
The grid on ground, the transistor Q2 is connect with transistor gate stabilizing circuit module and active bias circuit module respectively, described
The drain electrode of transistor Q2 is connect with negative feedback module and power supply module respectively.
4. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the negative feedback module
Including resistance R1 and capacitor C4, one end of the resistance R1 is connect with transistor modular and power supply module respectively, and passes through capacitor
C2 connection RF signal output, the other end of the resistance R1 are connect with one end of capacitor C4, the other end of the capacitor C4
It is connect respectively with input matching network, transistor modular and active bias circuit module.
5. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the power supply module packet
Choke induction L2 and decoupling capacitor C5 are included, one end of the choke induction L2 connects with negative feedback module and transistor modular respectively
It connects, the other end of the choke induction L2 is connect with one end of decoupling capacitor C5 and active bias circuit module respectively, and is connected
Power vd D, the other end of the decoupling capacitor C5 are connected to ground.
6. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the active biased electricity
Road module includes resistance R2~R6, transistor Q3 and transistor Q4, one end of the resistance R2 respectively with input matching network, crystalline substance
Body tube module is connected with negative feedback module, the leakage with the grid of transistor Q3, transistor Q3 respectively of the other end of the resistance R2
Pole is connected with one end of resistance R3, and the source electrode of the transistor Q3 is connected to ground, the other end of the resistance R3 by resistance R4
Connect with the source electrode of transistor Q4, the grid of the transistor Q4 and drain electrode respectively with one end of resistance R5 and resistance R6 one
End connection, the other end of the resistance R5 are connect with power supply module, and the other end of the resistance R6 is steady with transistor gate respectively
Determine circuit module to connect with transistor modular.
7. active biased Cascode radio frequency amplifier according to claim 1, which is characterized in that the transistor gate
Stabilizing circuit module includes resistance R7 and capacitor C6, one end of the resistance R7 respectively with active bias circuit module and transistor
Module connection, the other end of the resistance R7 are connected to ground by capacitor C6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920168227.5U CN209330069U (en) | 2019-01-30 | 2019-01-30 | A kind of active biased Cascode radio frequency amplifier |
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| CN201920168227.5U CN209330069U (en) | 2019-01-30 | 2019-01-30 | A kind of active biased Cascode radio frequency amplifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560777A (en) * | 2019-01-30 | 2019-04-02 | 周守佳 | A kind of active biased Cascode radio frequency amplifier |
| CN111510089A (en) * | 2020-04-30 | 2020-08-07 | 中国电子科技集团公司第二十四研究所 | Low-noise amplification module with bypass function and control method |
| CN111525895A (en) * | 2020-06-17 | 2020-08-11 | 成都华光瑞芯微电子股份有限公司 | Active bias integrated circuit broadband low-noise amplifier |
| CN113746442A (en) * | 2021-11-05 | 2021-12-03 | 成都明夷电子科技有限公司 | Low-voltage high-linearity cascode amplifier |
-
2019
- 2019-01-30 CN CN201920168227.5U patent/CN209330069U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560777A (en) * | 2019-01-30 | 2019-04-02 | 周守佳 | A kind of active biased Cascode radio frequency amplifier |
| CN109560777B (en) * | 2019-01-30 | 2024-06-14 | 周守佳 | Active bias Casode radio frequency amplifier |
| CN111510089A (en) * | 2020-04-30 | 2020-08-07 | 中国电子科技集团公司第二十四研究所 | Low-noise amplification module with bypass function and control method |
| CN111510089B (en) * | 2020-04-30 | 2023-08-11 | 中国电子科技集团公司第二十四研究所 | Low-noise amplifying module with bypass function and control method |
| CN111525895A (en) * | 2020-06-17 | 2020-08-11 | 成都华光瑞芯微电子股份有限公司 | Active bias integrated circuit broadband low-noise amplifier |
| CN113746442A (en) * | 2021-11-05 | 2021-12-03 | 成都明夷电子科技有限公司 | Low-voltage high-linearity cascode amplifier |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Active bias Cascode radio frequency amplifier Effective date of registration: 20200508 Granted publication date: 20190830 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd. Pledgor: Chengdu Mingyi Electronic Technology Co.,Ltd. Registration number: Y2020510000047 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210408 Granted publication date: 20190830 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd. Pledgor: Chengdu Mingyi Electronic Technology Co.,Ltd. Registration number: Y2020510000047 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An active bias cascode RF amplifier Effective date of registration: 20210809 Granted publication date: 20190830 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd. Pledgor: Chengdu Mingyi Electronic Technology Co.,Ltd. Registration number: Y2021510000172 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221014 Granted publication date: 20190830 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd. Pledgor: Chengdu Mingyi Electronic Technology Co.,Ltd. Registration number: Y2021510000172 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20190830 |