CN209375585U - A kind of ultra-wideband low-noise amplifier - Google Patents
A kind of ultra-wideband low-noise amplifier Download PDFInfo
- Publication number
- CN209375585U CN209375585U CN201821998696.1U CN201821998696U CN209375585U CN 209375585 U CN209375585 U CN 209375585U CN 201821998696 U CN201821998696 U CN 201821998696U CN 209375585 U CN209375585 U CN 209375585U
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- Prior art keywords
- bipolar junction
- junction transistor
- inductance
- resistance
- capacitor
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- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004088 simulation Methods 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
- 230000007850 degeneration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- 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
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- 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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The utility model discloses a kind of ultra-wideband low-noise amplifiers, including the first bipolar junction transistor Q1, the second bipolar junction transistor Q2, third bipolar junction transistor Q3 and the 4th bipolar junction transistor Q4.The utility model constitutes negative feedback loop by the second inductance L2 and second resistance R2, the power match and noise matching of ultra wide band are carried out to the first bipolar junction transistor Q1, so as to realize the matching of 50 ohm input impedances within the scope of the ultra wide frequency of 0.5GHz~20GHz and output impedance matching, the noise coefficient within the scope of the ultra wide frequency of 0.5GHz~20GHz also can be realized lower than 4dB.In addition, the circuit structure of the utility model is simple, circuit entire area is small.
Description
Technical field
The utility model relates to low-noise amplifiers, more particularly to a kind of ultra-wideband low-noise amplifier.
Background technique
In all kinds of radio transmitters, the first order amplifier of radio-frequency front-end is generally low-noise amplifier, as width
With the nucleus module in receiver front end circuit, low-noise amplifier must simultaneously meet the input in the broadband of upper GHz
End matched well to reduce return loss, high and flat gain to inhibit late-class circuit to the noise contribution of whole receiver,
Low noise coefficient is to improve the sensitivity of receiver.The generally common emitter amplifier of traditional radio frequency low-noise amplifier,
Using emitter-base bandgap grading degeneration inductor, the bandwidth of operation relative narrower of such amplifier.Some broadbands are proposed in the prior art
Low-noise amplifier, such as: distributed amplifier, source degenerate amplifier, resistive shunt-feedback formula based on wideband filtered network
Amplifier and cathode-input amplifier based on broadband noise cancellation technology.However, wideband low noise amplifier in the prior art
It all cannot achieve the bandwidth of 0.5GHz~20GHz.Also, distributed amplifier causes circuit area big due to multitube cascade；Base
In wideband filtered network source degenerate amplifier due in filter network on-chip inductor capacitor loss introduce additional noise and
It is difficult to obtain lower noise coefficient, and causes circuit area larger since on piece is integrated with multiple spiral inductances；Resistance
Noise coefficient is sacrificed in order to obtain matching properties in parallel feedback type amplifier, causes matching properties and noise coefficient can not
It is satisfactory to both parties；Cathode-input amplifier based on broadband noise cancellation technology weakens noise cancellation skill due to the strong noise of cobasis structure itself
The effect of art.
Utility model content
Purpose of utility model: it the purpose of the utility model is to provide a kind of ultra-wideband low-noise amplifier, is able to solve existing
There is narrow bandwidth present in technology, cannot be considered in terms of matching properties and problem that noise coefficient, circuit area are big.
Technical solution: ultra-wideband low-noise amplifier described in the utility model, including the first bipolar junction transistor Q1,
Two bipolar junction transistor Q2, third bipolar junction transistor Q3 and the 4th bipolar junction transistor Q4, the first bipolar junction transistor Q1's
Base stage connects one end of the first inductance L1, and the other end of the first inductance L1 is separately connected one end and the second resistance of first capacitor C1
One end of R2, the other end ground connection of first capacitor C1, the other end of second resistance R2 connect one end of the second capacitor C2, the second electricity
The other end for holding C2 is separately connected one end of third inductance L3, one end of the 4th inductance L4 and third bipolar junction transistor Q3
Base stage, the other end of third inductance L3 connect the collector of the first bipolar junction transistor Q1, the hair of the first bipolar junction transistor Q1
Emitter-base bandgap grading is grounded by the second inductance L2, and the other end of the 4th inductance L4 passes through the second bipolar junction transistor of 3rd resistor R3 connection Q2
Emitter, the base stage and collector of the second bipolar junction transistor Q2 input the first supply voltage VCC1, the first inductance L1's
The other end inputs the first bias voltage Vb1, and the base stage of third bipolar junction transistor Q3 inputs the second bias voltage Vb2, and third is double
The emitter of bipolar transistor Q3 is grounded, and the collector of third bipolar junction transistor Q3 connects the hair of the 4th bipolar junction transistor Q4
Emitter-base bandgap grading, the base stage and collector of the 4th bipolar junction transistor Q4 input the second supply voltage VCC2, and the first inductance L1's is another
Hold the input terminal as entire amplifier, output end of the collector of third bipolar junction transistor Q3 as entire amplifier.
It further, further include first resistor R1, one end of one end connection second resistance R2 of first resistor R1, first resistor
The other end of R1 inputs the first bias voltage Vb1.First resistor R1 can reduce influence of the first bias voltage Vb1 to circuit.
It further, further include the 4th resistance R4, one end of the 4th resistance R4 connects the base stage of third bipolar junction transistor Q3,
The other end of 4th resistance R4 inputs the second bias voltage Vb2.4th resistance R4 can reduce the second bias voltage Vb2 to circuit
Influence.
It further, further include third capacitor C3, one end of third capacitor C3 connects one end of the 4th inductance L4, third capacitor
The base stage of the other end connection third bipolar junction transistor Q3 of C3.Third capacitor C3 can play the effect of stopping direct current.
It further, further include the 5th inductance L5, the current collection of one end connection third bipolar junction transistor Q3 of the 5th inductance L5
Pole, the other end of the 5th inductance L5 connect the emitter of the 4th bipolar junction transistor Q4.
It further, further include the 6th resistance R6 and the 6th inductance L6, one end of the 6th inductance L6 connects the ambipolar crystalline substance of third
The collector of body pipe Q3, the other end of the 6th inductance L6 connect one end of the 6th resistance R6, the other end connection of the 6th resistance R6
The emitter of 4th bipolar junction transistor Q4.6th resistance R6 and the 6th inductance L6 is conducive to improve gain flatness.
It further, further include the 7th inductance L7, the current collection of one end connection third bipolar junction transistor Q3 of the 7th inductance L7
Pole, output end of the other end of the 7th inductance L7 as entire amplifier.6th resistance R6, the 6th inductance L6 and the 7th inductance L7
It can guarantee that the S22 of amplifier is less than -10dB in operating frequency range.
It further, further include the 4th capacitor C4 and the 5th resistance R5, the one of one end of the 4th capacitor C4 and the 5th resistance R5
End is all connected with the emitter of third bipolar junction transistor Q3, and the other end of the 4th capacitor C4 and the other end of the 5th resistance R5 connect
Ground.4th capacitor C4 and the 5th resistance R5 can compensate the high-frequency gain of amplifier, be conducive to improve gain flatness.
The utility model has the advantages that drawing high height by third inductance L3 the utility model discloses a kind of ultra-wideband low-noise amplifier
Frequency gain constitutes negative feedback loop by the second inductance L2 and second resistance R2, and passes through first capacitor C1 and amplifier electricity
Road itself constitutes broadband passive matching network, and the power match and noise of ultra wide band are carried out to the first bipolar junction transistor Q1
Match, so as to realize the matching of 50 ohm input impedances within the scope of the ultra wide frequency of 0.5GHz~20GHz and output impedance
Matching also can be realized the noise coefficient within the scope of the ultra wide frequency of 0.5GHz~20GHz lower than 4dB.In addition, this is practical new
The circuit structure of type is simple, and circuit entire area is small.
Detailed description of the invention
Fig. 1 is the circuit diagram of amplifier in specific embodiment of the present invention；
Fig. 2 is the S parameter simulation result diagram of amplifier in specific embodiment of the present invention.
Specific embodiment
Present embodiment discloses a kind of ultra-wideband low-noise amplifier, as shown in Figure 1, including the first ambipolar crystalline substance
Body pipe Q1, the second bipolar junction transistor Q2, third bipolar junction transistor Q3 and the 4th bipolar junction transistor Q4, the first ambipolar crystalline substance
The base stage of body pipe Q1 connects one end of the first inductance L1, the other end of the first inductance L1 be separately connected first capacitor C1 one end and
One end of second resistance R2, the other end ground connection of first capacitor C1, the other end of second resistance R2 connect the one of the second capacitor C2
End, it is ambipolar that the other end of the second capacitor C2 is separately connected one end of third inductance L3, one end of the 4th inductance L4 and third
The base stage of transistor Q3, the other end of third inductance L3 connect the collector of the first bipolar junction transistor Q1, the first ambipolar crystalline substance
The emitter of body pipe Q1 is grounded by the second inductance L2, and the other end of the 4th inductance L4 is bipolar by 3rd resistor R3 connection second
The emitter of transistor npn npn Q2, the base stage and collector of the second bipolar junction transistor Q2 input the first supply voltage VCC1, the
The other end of one inductance L1 inputs the first bias voltage Vb1, and the base stage of third bipolar junction transistor Q3 inputs the second bias voltage
The emitter of Vb2, third bipolar junction transistor Q3 are grounded, and the collector of third bipolar junction transistor Q3 connects the 4th ambipolar crystalline substance
The emitter of body pipe Q4, the base stage and collector of the 4th bipolar junction transistor Q4 input the second supply voltage VCC2, the first electricity
Feel input terminal of the other end of L1 as entire amplifier, the collector of third bipolar junction transistor Q3 is as entire amplifier
Output end.
In order to reduce influence of the first bias voltage Vb1 to circuit, present embodiment can also include first resistor
R1, as shown in Figure 1, one end of one end connection second resistance R2 of first resistor R1, the other end input first of first resistor R1
Bias voltage Vb1.In order to reduce influence of the second bias voltage Vb2 to circuit, present embodiment can also include the 4th
The base stage of one end connection third bipolar junction transistor Q3 of resistance R4, the 4th resistance R4, the other end input the of the 4th resistance R4
Two bias voltage Vb2.
In order to play the effect of stopping direct current, present embodiment can also include third capacitor C3, as shown in Figure 1, the
One end of three capacitor C3 connects one end of the 4th inductance L4, the other end connection third bipolar junction transistor Q3's of third capacitor C3
Base stage.Third capacitor C3 can play the effect of stopping direct current.In addition, present embodiment can also include the 5th inductance L5,
As shown in Figure 1, the collector of one end connection third bipolar junction transistor Q3 of the 5th inductance L5, the other end of the 5th inductance L5 connect
Connect the emitter of the 4th bipolar junction transistor Q4.
In order to improve gain flatness, present embodiment can also include the 6th resistance R6 and the 6th inductance L6, such as
Shown in Fig. 1, the collector of one end connection third bipolar junction transistor Q3 of the 6th inductance L6, the other end connection of the 6th inductance L6
One end of 6th resistance R6, the other end of the 6th resistance R6 connect the emitter of the 4th bipolar junction transistor Q4.In addition, in order to protect
The S22 for demonstrate,proving amplifier is less than -10dB in operating frequency range, and present embodiment can also further include the 7th inductance L7,
As shown in Figure 1, the collector of one end connection third bipolar junction transistor Q3 of the 7th inductance L7, the other end of the 7th inductance L7 are made
For the output end of entire amplifier.
In order to which the high-frequency gain to amplifier compensates, gain flatness is improved, present embodiment further includes the
Four capacitor C4 and the 5th resistance R5, as shown in Figure 1, one end of the 4th capacitor C4 and one end of the 5th resistance R5 are all connected with third pair
The emitter of bipolar transistor Q3, the other end of the 4th capacitor C4 and the other end of the 5th resistance R5 are grounded.
Fig. 2 is the S parameter simulation result diagram of amplifier in present embodiment.As shown in Figure 2, amplifier is in 0.5GHz
Entire gain in~20GHz operating frequency range is in 17.5dB or so.The change in gain of 0.5GHz~18GHz is less than 0.5dB,
The change in gain of 18GHz~20GHz is less than 1dB, it is seen that gain of the amplifier in 0.5GHz~20GHz operating frequency range is flat
Smooth degree is fine.S11 is respectively less than -10dB in 0.5GHz~20GHz, it is seen that the input coupling bandwidth of amplifier is very wide.S22 is in 1GHz
~20GHz is again smaller than -10dB.Noise coefficient is respectively less than 4dB, making an uproar at 12GHz in 0.5GHz~20GHz operating frequency range
Sonic system number is 3.2dB, it is seen that noise coefficient of the amplifier in 0.5GHz~20GHz operating frequency range is also very low.
Claims (8)
1. a kind of ultra-wideband low-noise amplifier, it is characterised in that: including the first bipolar junction transistor Q1, the second bipolar transistor
Pipe Q2, third bipolar junction transistor Q3 and the 4th bipolar junction transistor Q4, the base stage connection first of the first bipolar junction transistor Q1
One end of inductance L1, the other end of the first inductance L1 are separately connected one end of first capacitor C1 and one end of second resistance R2, the
The other end of one capacitor C1 is grounded, and the other end of second resistance R2 connects one end of the second capacitor C2, and the second capacitor C2's is another
End is separately connected the base stage of one end of third inductance L3, one end of the 4th inductance L4 and third bipolar junction transistor Q3, third
The other end of inductance L3 connects the collector of the first bipolar junction transistor Q1, and the emitter of the first bipolar junction transistor Q1 passes through the
Two inductance L2 ground connection, the other end of the 4th inductance L4 pass through the emitter of the second bipolar junction transistor of 3rd resistor R3 connection Q2,
The base stage and collector of second bipolar junction transistor Q2 inputs the other end input of the first supply voltage VCC1, the first inductance L1
The base stage of first bias voltage Vb1, third bipolar junction transistor Q3 input the second bias voltage Vb2, third bipolar junction transistor
The emitter of Q3 is grounded, the emitter of the 4th bipolar junction transistor Q4 of collector connection of third bipolar junction transistor Q3, and the 4th
The base stage and collector of bipolar junction transistor Q4 inputs the other end of the second supply voltage VCC2, the first inductance L1 as entire
The input terminal of amplifier, output end of the collector of third bipolar junction transistor Q3 as entire amplifier.
2. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: it further include first resistor R1, first
One end of one end connection second resistance R2 of resistance R1, the other end of first resistor R1 input the first bias voltage Vb1.
3. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: it further include the 4th resistance R4, the 4th
The base stage of one end connection third bipolar junction transistor Q3 of resistance R4, the other end of the 4th resistance R4 input the second bias voltage
Vb2。
4. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: further include third capacitor C3, third
One end of capacitor C3 connects one end of the 4th inductance L4, the base of the other end connection third bipolar junction transistor Q3 of third capacitor C3
Pole.
5. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: it further include the 5th inductance L5, the 5th
The collector of one end connection third bipolar junction transistor Q3 of inductance L5, the other end of the 5th inductance L5 connect the 4th ambipolar crystalline substance
The emitter of body pipe Q4.
6. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: further include the 6th resistance R6 and the 6th
The collector of one end connection third bipolar junction transistor Q3 of inductance L6, the 6th inductance L6, the other end connection of the 6th inductance L6
One end of 6th resistance R6, the other end of the 6th resistance R6 connect the emitter of the 4th bipolar junction transistor Q4.
7. ultra-wideband low-noise amplifier according to claim 6, it is characterised in that: it further include the 7th inductance L7, the 7th
The collector of one end connection third bipolar junction transistor Q3 of inductance L7, the other end of the 7th inductance L7 is as entire amplifier
Output end.
8. ultra-wideband low-noise amplifier according to claim 1, it is characterised in that: further include the 4th capacitor C4 and the 5th
Resistance R5, one end of the 4th capacitor C4 and one end of the 5th resistance R5 are all connected with the emitter of third bipolar junction transistor Q3, the
The other end of four capacitor C4 and the other end of the 5th resistance R5 are grounded.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821998696.1U CN209375585U (en) | 2018-11-30 | 2018-11-30 | A kind of ultra-wideband low-noise amplifier |
| PCT/CN2019/112622 WO2020108176A1 (en) | 2018-11-30 | 2019-10-22 | Ultra-wideband low-noise amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821998696.1U CN209375585U (en) | 2018-11-30 | 2018-11-30 | A kind of ultra-wideband low-noise amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN209375585U true CN209375585U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821998696.1U Withdrawn - After Issue CN209375585U (en) | 2018-11-30 | 2018-11-30 | A kind of ultra-wideband low-noise amplifier |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209375585U (en) |
| WO (1) | WO2020108176A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474243A (en) * | 2018-11-30 | 2019-03-15 | 南京米乐为微电子科技有限公司 | A kind of ultra-wideband low-noise amplifier |
| CN110907718A (en) * | 2019-10-29 | 2020-03-24 | 威凯检测技术有限公司 | Electromagnetic compatibility radiation disturbance standard sample for lighting product |
| WO2020108176A1 (en) * | 2018-11-30 | 2020-06-04 | 南京米乐为微电子科技有限公司 | Ultra-wideband low-noise amplifier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100667303B1 (en) * | 2005-02-01 | 2007-01-12 | 삼성전자주식회사 | Low noise amplifier for ultra-wide band |
| CN101350592A (en) * | 2008-07-11 | 2009-01-21 | 东南大学 | Ultra-wideband low noise amplifier |
| CN101997489A (en) * | 2010-10-15 | 2011-03-30 | 中兴通讯股份有限公司 | Amplifier and implementation method thereof |
| CN103051291B (en) * | 2012-12-31 | 2015-10-07 | 中国科学院上海微***与信息技术研究所 | The CMOS ultra wide band low noise amplifier circuit that interstage matched is adjustable |
| CN104779919B (en) * | 2015-05-04 | 2018-03-02 | 中国电子科技集团公司第五十四研究所 | A kind of ultra wide band low-power consumption low-noise amplifier of automatic biasing |
| CN109474243B (en) * | 2018-11-30 | 2024-03-22 | 南京米乐为微电子科技有限公司 | Ultra-wideband low-noise amplifier |
| CN209375585U (en) * | 2018-11-30 | 2019-09-10 | 南京米乐为微电子科技有限公司 | A kind of ultra-wideband low-noise amplifier |
-
2018
- 2018-11-30 CN CN201821998696.1U patent/CN209375585U/en not_active Withdrawn - After Issue
-
2019
- 2019-10-22 WO PCT/CN2019/112622 patent/WO2020108176A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474243A (en) * | 2018-11-30 | 2019-03-15 | 南京米乐为微电子科技有限公司 | A kind of ultra-wideband low-noise amplifier |
| WO2020108176A1 (en) * | 2018-11-30 | 2020-06-04 | 南京米乐为微电子科技有限公司 | Ultra-wideband low-noise amplifier |
| CN109474243B (en) * | 2018-11-30 | 2024-03-22 | 南京米乐为微电子科技有限公司 | Ultra-wideband low-noise amplifier |
| CN110907718A (en) * | 2019-10-29 | 2020-03-24 | 威凯检测技术有限公司 | Electromagnetic compatibility radiation disturbance standard sample for lighting product |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020108176A1 (en) | 2020-06-04 |
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