CN210297646U - Low-noise amplification module - Google Patents
Low-noise amplification module Download PDFInfo
- Publication number
- CN210297646U CN210297646U CN201921538648.9U CN201921538648U CN210297646U CN 210297646 U CN210297646 U CN 210297646U CN 201921538648 U CN201921538648 U CN 201921538648U CN 210297646 U CN210297646 U CN 210297646U
- Authority
- CN
- China
- Prior art keywords
- resistor
- low
- capacitor
- amplification module
- noise amplification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003321 amplification Effects 0.000 title claims abstract description 24
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 44
- 230000005611 electricity Effects 0.000 claims description 8
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 230000003068 static effect Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a low noise amplification module especially relates to low noise amplification module technical field, and low noise amplification module includes: the circuit comprises an SF2194 filter, a bias circuit, an ATF54143 low-noise amplifier, a feedback circuit and an attenuator, wherein the ATF54143 low-noise amplifier is electrically connected with the output end of the SF2194 filter, and the output end of the SF2194 filter and the input end of the ATF54143 low-noise amplifier are both electrically connected with the output end of the grid bias circuit. When the low-noise amplification module is used, a radio frequency signal is amplified after being filtered, then a bias circuit provides bias current for the low-noise amplification module, a feedback circuit stabilizes a static working point, and then an attenuator adjusts gain to enable the gain to reach an enough power level, so that the sensitivity of a system is improved, and the defects that the requirements of a user cannot be met due to the fact that the sensitivity of the existing low-noise amplification module is too low are overcome.
Description
Technical Field
The utility model relates to a low noise amplification module technical field especially relates to a low noise amplification module.
Background
Low noise amplifiers are now widely used in international and domestic satellite communications, including television receiving ground stations, in international satellite communication applications, the main development requirements of low noise amplifiers are improved performance and reduced cost, since international traffic is rapidly increasing year after year, it is necessary to meet the increasing communication demand by improving the performance of the low noise amplifier, and on the other hand, if a high performance low noise amplifier is connected at the front end of the receiving system, the noise coefficient of the low noise amplifier is reduced in the low noise amplifier gain-sufficient system, the receiving number is also improved in a variable noise ratio, the sensitivity is improved, and therefore the low noise amplifier restricts the performance of the whole receiving system, the improvement of the technical level of the whole receiving system is also decisive, but the sensitivity of the current low-noise amplifying module is too low, so that the requirement of a user cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to overcome current low-noise amplification module, sensitivity is low excessively, leads to not reaching defects such as user's demand, the utility model provides a low-noise amplification module, sensitivity obtains improving for user's demand has been reached.
The utility model provides a technical scheme that its technical problem adopted is: a low noise amplification module, the low noise amplification module comprising: SF2194 filter, bias circuit, ATF54143 low noise amplifier, feedback circuit and attenuator, ATF54143 low noise amplifier electricity is connected at the output of SF2194 filter, SF2194 filter and ATF54143 low noise amplifier's input all is connected with bias circuit's output electricity, feedback circuit's input and output are connected with ATF54143 low noise amplifier's input and output electricity respectively, the attenuator electricity is connected at ATF54143 low noise amplifier's output.
Preferably, the bias circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, and an inductor L3, the resistor R1 and the capacitor C4 are connected in parallel to an output end of the inductor L1, the resistor R1 and the capacitor C4 are connected in parallel, the capacitor C2 and the resistor R2 are connected in parallel to an output end of the resistor R1, the capacitor C2 and the resistor R2 are connected in parallel, the resistor R3 and the resistor R4 are connected in parallel to an output end of the resistor R2, the resistor R3 and the resistor R4 are connected in parallel, the capacitor C3 is connected in parallel to an output end of the inductor L3, and the resistor R5 is connected in parallel to output ends of the capacitor C3 and the resistor R4.
Preferably, the feedback circuit comprises a capacitor C5 and a resistor R6, and the resistor R6 is connected in series between the capacitor C5.
Preferably, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the capacitor C2, the capacitor C4 and the inductor L1 constitute a gate bias of the amplifier.
Preferably, the resistor R5, the capacitor C3 and the inductor L3 constitute a drain bias of the amplifier.
Compared with the prior art, the utility model discloses the beneficial effect who realizes: when the low-noise amplification module is used, a radio frequency signal is amplified after being filtered, then a bias circuit provides bias current for the low-noise amplification module, a feedback circuit stabilizes a static working point, and then an attenuator adjusts gain to enable the gain to reach an enough power level, so that the sensitivity of a system is improved.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic view of the low noise amplifier module of the present invention;
FIG. 2 is a left side schematic view of the overall circuit;
fig. 3 is a right-hand schematic diagram of the overall circuit.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
As shown in fig. 1 to 3, a low noise amplification module includes: the low-noise amplifier circuit comprises an SF2194 filter, a bias circuit, an ATF54143 low-noise amplifier, a feedback circuit and an attenuator, wherein the ATF54143 low-noise amplifier is electrically connected with the output end of the SF2194 filter, the input ends of the SF2194 filter and the ATF54143 low-noise amplifier are electrically connected with the output end of a grid bias circuit, the output end of the ATF54143 low-noise amplifier is electrically connected with the output end of a drain bias circuit, the input end and the output end of the feedback circuit are respectively electrically connected with the input end and the output end of the ATF54143 low-noise amplifier, the attenuator is electrically connected with the output end of the ATF54143 low-noise amplifier, the bias circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1 and an inductor L3, the resistor R1 and a capacitor C4 are both connected in parallel with the output end of an inductor L1, the resistor R1 and the capacitor C4 are connected in parallel, the capacitor C2 is connected in parallel with the resistor R2, the resistor R3 and the resistor R4 are connected in parallel with the output end of the resistor R2, the resistor R3 is connected in parallel with the resistor R4, the capacitor C3 is connected in parallel with the output end of the inductor L3, the resistor R5 is connected in parallel with the output ends of the capacitor C3 and the resistor R4, the feedback circuit comprises a capacitor C5 and a resistor R6, the resistor R6 is connected in series between the capacitors C5, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the capacitor C2, the capacitor C4 and the inductor L1 constitute a gate bias of the amplifier, the resistor R5, the capacitor C3 and the inductor L3 constitute a drain bias of the amplifier, the radio frequency input signal is firstly filtered by the 2194 filter and then is amplified by the ATF54143 low noise amplifier, while the bias circuit provides a bias current for the amplifier, the drain bias is centered by the capacitor C3, the inductor L3 and the gate bias amplifier is centered, the capacitor C4 is biased, the inductor L1 chokes, the static working point of the feedback circuit is stabilized to prevent distortion, and the capacitor C5 and the resistor R6 form a negative feedback circuit of the amplifier, so that the standing wave ratio and the gain can be improved, and finally the signal gain is changed in a small amplitude through the pi-type attenuator.
Specifically, the SF2194 filter mainly functions to filter out-of-band signals of the radio frequency input signal, the ATF54143 low noise amplifier has a function of amplifying the signal under a low noise condition, the bias circuit functions to provide bias current for the SF2194 filter and the ATF54143 low noise amplifier, and the like, the feedback circuit functions to stabilize a static operating point of the amplification circuit and prevent the amplification circuit from distortion, and the attenuator functions to adjust signal gain.
Furthermore, when the radio frequency signal is amplified after being filtered, a bias circuit provides bias current for the radio frequency signal, a feedback circuit stabilizes a static working point, and an attenuator adjusts gain to enable the gain to reach a sufficient power level, so that the sensitivity of the system is improved.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A low noise amplification module, comprising:
SF2194 filter, biasing circuit, ATF54143 low noise amplifier, feedback circuit and attenuator, ATF54143 low noise amplifier electricity is connected at the output of SF2194 filter, SF2194 filter output and ATF54143 low noise amplifier's input all is connected with gate biasing circuit's output electricity, feedback circuit's input and output are connected with ATF54143 low noise amplifier's input and output electricity respectively, the attenuator electricity is connected at ATF54143 low noise amplifier's output.
2. A low noise amplification module as defined in claim 1, wherein: the bias circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1 and an inductor L3, wherein the resistor R1 and the capacitor C4 are connected to the output end of the inductor L1 in parallel, the resistor R1 and the capacitor C4 are connected in parallel, the capacitor C2 and the resistor R2 are connected to the output end of the resistor R1 in parallel, the capacitor C2 and the resistor R2 are connected in parallel, the resistor R3 and the resistor R4 are connected to the output end of the resistor R2 in parallel, the resistor R3 and the resistor R4 are connected in parallel, the capacitor C3 is connected to the output end of the inductor L3 in parallel, and the resistor R5 is connected to the output ends of the capacitor C3 and the resistor R4 in parallel.
3. A low noise amplification module as defined in claim 1, wherein: the feedback circuit comprises a capacitor C5 and a resistor R6, and the resistor R6 is connected between the capacitors C5 in series.
4. A low noise amplification module as defined in claim 2, wherein: the resistor R1, the resistor R2, the resistor R3, the resistor R4, the capacitor C2, the capacitor C4 and the inductor L1 form a gate bias of the amplifier.
5. A low noise amplification module as defined in claim 2, wherein: the resistor R5, the capacitor C3 and the inductor L3 form drain bias of the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921538648.9U CN210297646U (en) | 2019-09-16 | 2019-09-16 | Low-noise amplification module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921538648.9U CN210297646U (en) | 2019-09-16 | 2019-09-16 | Low-noise amplification module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297646U true CN210297646U (en) | 2020-04-10 |
Family
ID=70063394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921538648.9U Expired - Fee Related CN210297646U (en) | 2019-09-16 | 2019-09-16 | Low-noise amplification module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328706A (en) * | 2021-06-10 | 2021-08-31 | 西安博瑞集信电子科技有限公司 | Feedback network and low-noise amplifier |
-
2019
- 2019-09-16 CN CN201921538648.9U patent/CN210297646U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328706A (en) * | 2021-06-10 | 2021-08-31 | 西安博瑞集信电子科技有限公司 | Feedback network and low-noise amplifier |
| CN113328706B (en) * | 2021-06-10 | 2023-09-15 | 西安博瑞集信电子科技有限公司 | Feedback network and low noise amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103117711B (en) | Monolithic integrated radio frequency high-gain low-noise amplifier | |
| CN102969984A (en) | Low noise amplifier for current reuse and noise cancellation | |
| CN104035105A (en) | Low noise amplifier and radio frequency system at front end of GNSS system receiver | |
| US7619472B1 (en) | Noise-shaped blocker-reject amplifier | |
| CN203734624U (en) | High-performance microstrip multistage low-noise amplifier | |
| CN106230389A (en) | high-gain low-noise amplifier | |
| CN107846195A (en) | A kind of ultra-wideband microwave low-noise amplifier of the active multiple feedback of band | |
| CN203930070U (en) | The radio system of low noise amplifier and GNSS system receiver front end | |
| CN210297646U (en) | Low-noise amplification module | |
| CN106953612A (en) | A kind of plus and blowup circuit based on methods of parasitic feedback technology for eliminating | |
| CN204517760U (en) | A kind of Big Dipper B3 band low noise amplifier circuit | |
| CN101882911A (en) | Filter circuit for improving linearity and power added efficiency of power amplifier | |
| CN109391236A (en) | A kind of signal amplification circuit and millimeter-wave signal amplifying circuit | |
| CN116683874A (en) | Low noise amplifier | |
| CN201726361U (en) | Filter circuit capable of improving linearity of power amplifier and power added efficiency | |
| CN216490516U (en) | Pulse modulation device for simulating Gaussian waveform | |
| CN205160479U (en) | Transmitting channel power amplification circuit of UHF frequency channel | |
| CN205160476U (en) | Power amplifier with distortion compensating circuit | |
| CN209120141U (en) | A kind of simple LC resonance amplifier installation | |
| CN210380776U (en) | Lossless negative feedback low-noise amplifier circuit | |
| CN101882914A (en) | Efficiency and linearity-enhanced power amplifier | |
| CN106656082A (en) | Multistage amplifier circuit | |
| CN206077339U (en) | high-gain low-noise amplifier | |
| CN218071450U (en) | Broadband low-noise amplifier | |
| CN103078596A (en) | Fully-differential low-power-consumption low-noise amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |