CN215818061U - Low-noise amplifier with deep saturation and high harmonic suppression - Google Patents
Low-noise amplifier with deep saturation and high harmonic suppression Download PDFInfo
- Publication number
- CN215818061U CN215818061U CN202121943887.XU CN202121943887U CN215818061U CN 215818061 U CN215818061 U CN 215818061U CN 202121943887 U CN202121943887 U CN 202121943887U CN 215818061 U CN215818061 U CN 215818061U
- Authority
- CN
- China
- Prior art keywords
- inductor
- capacitor
- bridge module
- input
- output
- 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.)
- Active
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a low-noise amplifier for deep saturation and high harmonic suppression, which comprises two bridge modules, four matching units and two amplification modules; wherein the input end of the first bridge module is connected with the input signal; the output end of the first bridge module is respectively connected with the input ends of the two matching units; the output ends of the two matching units are respectively connected with the input ends of the two amplifying modules; the output ends of the two amplifying modules are respectively connected with the input ends of the other two matching units, and the output ends of the other two matching units are respectively connected with the input end of the second bridge module. The utility model can make the harmonic waves generated by the signal of the amplifier of the utility model offset each other through the bridge module, so that the signal can achieve the amplification effect, simultaneously generate extremely small harmonic waves, and does not influence the subsequent link, thereby improving the accuracy of signal processing and meeting the frequency measurement system with higher requirements.
Description
Technical Field
The utility model relates to the field of amplifiers, in particular to a low-noise amplifier with deep saturation and high harmonic suppression.
Background
With the rapid development of low noise amplifiers, in the frequency measurement field, the harmonic suppression of low noise amplifiers which need to work in a saturation state is higher and higher, and the misjudgment of signal processing and the misjudgment of the frequency of signals entering a system caused by the harmonic are avoided. It is therefore first necessary that the harmonic rejection is improved by the low noise amplifier in such a state that it is saturated. The software can clearly judge the frequency signal.
The traditional processing means only depends on the harmonic suppression of the amplifier module device, generally, the suppression of the amplifier is about 8dB under the saturation state, and the use requirement of a high-requirement frequency measurement system cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies in the prior art, the present invention provides a deeply saturated and high harmonic suppressed low noise amplifier, which solves the problem of generating unwanted harmonic signals in the conventional amplifier.
In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that:
the low noise amplifier comprises two bridge modules, four matching units and two amplifying modules; wherein the input end of the first bridge module is connected with the input signal; the first output end of the first bridge module is connected with the input end of the first matching unit; the second output end of the first bridge module is connected with the input end of the second matching unit; the output end of the first matching unit is connected with the input end of the first amplifying module; the output end of the second matching unit is connected with the input end of the second amplifying module; the output end of the first amplification module is connected with the input end of the third matching unit; the output end of the second amplification module is connected with the input end of the fourth matching unit; the output end of the third matching unit is connected with the first input end of the second bridge module; the output end of the fourth matching unit is connected with the second input end of the second bridge module; the output end of the second bridge module is the output end of a low noise amplifier with deep saturation and high harmonic suppression.
Further: the first bridge module comprises an inductor L1, an inductor L2, an inductor L3, an inductor L4, an inductor L5 and an inductor L6; one end of the inductor L1 is an input end of the first bridge module; the other end of the inductor L1 is connected with the inductor L2; the other end of the inductor L2 is connected with one end of the inductor L6 and serves as a first output end of the bridge module; the other end of the inductor L6 is connected with one end of an inductor L5; the other end of the inductor L5 is connected with one end of the inductor L3 and the load respectively; the other end of the inductor L3 is connected with one end of an inductor L4; the other end of the inductor L4 is a second output terminal of the bridge module.
Further: the second bridge module comprises an inductor L7, an inductor L8, an inductor L9, an inductor L10, an inductor L11 and an inductor L12; one end of the inductor L10 is a first input end of the second bridge module; the other end of the inductor L10 is connected with the inductor L9; the other end of the inductor L9 is connected with one end of the inductor L11 and the load respectively; the other end of the inductor L11 is connected with one end of an inductor L12; the other end of the inductor L12 is connected to one end of the inductor L8 and serves as a second input terminal of the second bridge module; the other end of the inductor L8 is connected with one end of an inductor L7; the other end of the inductor L7 serves as the output terminal of the second bridge module.
Further: the matching unit comprises a resistor R1, a resistor R2 and a resistor R3; one end of the resistor R1 is connected with the grounding resistor R2 and is used as the input end of the matching unit; the other end of the resistor R1 is connected to a ground resistor R3 and serves as the output of the matching unit.
Further: the amplification module comprises a capacitor C4; one end of the capacitor C4 is the input end of the amplifying module; the other end of the capacitor C4 is respectively connected with the input end of the amplifier and one end of the capacitor C5; the other end of the capacitor C5 is connected with one end of a resistor R4; the other end of the resistor R4 is respectively connected with the output end of the amplifier, one end of the capacitor C6 and one end of the inductor L13; the other end of the capacitor C6 is the output end of the amplifying module; the other end of the inductor L13 is connected with one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 respectively; the other end of the inductor L7, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 are connected with a direct-current voltage; the other terminal of the capacitor C1, the other terminal of the capacitor C2, and the other terminal of the capacitor C3 are commonly grounded.
Further: the amplifier is model GRF 2105.
The utility model has the beneficial effects that: harmonic waves generated by signals passing through the amplifier of the utility model can be mutually offset by the bridge module, so that the signals can achieve the amplification effect, simultaneously generate extremely small harmonic waves, have no influence on subsequent links, improve the accuracy of signal processing and meet a frequency measurement system with higher requirements.
Drawings
FIG. 1 is a block diagram of an implementation link of the present invention;
FIG. 2 is a circuit diagram of a first bridge module of the present invention;
FIG. 3 is a circuit diagram of a second bridge module of the present invention;
FIG. 4 is a circuit diagram of a matching unit according to the present invention;
fig. 5 is a circuit diagram of an amplifying module of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all matters produced by the utility model using the inventive concept are protected.
As shown in fig. 1, the deeply saturated high harmonic rejection low noise amplifier includes two bridge modules, four matching units and two amplifying modules; wherein the input end of the first bridge module is connected with the input signal; the first output end of the first bridge module is connected with the input end of the first matching unit; the second output end of the first bridge module is connected with the input end of the second matching unit; the output end of the first matching unit is connected with the input end of the first amplifying module; the output end of the second matching unit is connected with the input end of the second amplifying module; the output end of the first amplification module is connected with the input end of the third matching unit; the output end of the second amplification module is connected with the input end of the fourth matching unit; the output end of the third matching unit is connected with the first input end of the second bridge module; the output end of the fourth matching unit is connected with the second input end of the second bridge module; the output end of the second bridge module is the output end of a low noise amplifier with deep saturation and high harmonic suppression.
As shown in fig. 2, the first bridge module includes an inductor L1, an inductor L2, an inductor L3, an inductor L4, an inductor L5, and an inductor L6; one end of the inductor L1 is an input end of the first bridge module; the other end of the inductor L1 is connected with the inductor L2; the other end of the inductor L2 is connected with one end of the inductor L6 and serves as a first output end of the bridge module; the other end of the inductor L6 is connected with one end of an inductor L5; the other end of the inductor L5 is connected with one end of the inductor L3 and the load respectively; the other end of the inductor L3 is connected with one end of an inductor L4; the other end of the inductor L4 is a second output terminal of the bridge module.
The rf signal is routed through the input terminal of the first bridge module of fig. 2 via the inductor L1 and the inductor L2, respectively, to have an output signal at the first output terminal of the bridge module, which output signal is passed through the inductor L4, the inductor L3, the inductor L5 and the inductor L6, respectively, to generate another output signal, and the two output signals are 180 ° out of phase.
As shown in fig. 3, the second bridge module includes an inductor L7, an inductor L8, an inductor L9, an inductor L10, an inductor L11, and an inductor L12; one end of the inductor L10 is a first input end of the second bridge module; the other end of the inductor L10 is connected with the inductor L9; the other end of the inductor L9 is connected with one end of the inductor L11 and the load respectively; the other end of the inductor L11 is connected with one end of an inductor L12; the other end of the inductor L12 is connected to one end of the inductor L8 and serves as a second input terminal of the second bridge module; the other end of the inductor L8 is connected with one end of an inductor L7; the other end of the inductor L7 serves as the output terminal of the second bridge module.
The first input end of the second bridge module and the second input end of the second bridge module respectively receive two different signals, the signal received by the first input end of the second bridge module is 180 degrees different from the signal received by the second input end of the second bridge module, the signal received by the first input end of the second bridge module outputs one signal through an inductor L10, an inductor L9, an inductor L11, an inductor L12, an inductor L8 and an inductor L7, the signal received by the second input end of the second bridge module outputs another signal through an inductor L8 and an inductor L7, and the phase difference of the two output signals is 0.
As shown in fig. 4, the matching unit includes a resistor R1, a resistor R2, and a resistor R3; one end of the resistor R1 is connected with the grounding resistor R2 and is used as the input end of the matching unit; the other end of the resistor R1 is connected to a ground resistor R3 and serves as the output of the matching unit.
The matching unit adopts a pi-type fixed attenuation mode for matching, so that the input and output standing waves of the amplifier are better.
As shown in fig. 5, the amplification block includes a capacitor C4; one end of the capacitor C4 is the input end of the amplifying module; the other end of the capacitor C4 is respectively connected with the input end of the amplifier and one end of the capacitor C5; the other end of the capacitor C5 is connected with one end of a resistor R4; the other end of the resistor R4 is respectively connected with the output end of the amplifier, one end of the capacitor C6 and one end of the inductor L13; the other end of the capacitor C6 is the output end of the amplifying module; the other end of the inductor L13 is connected with one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 respectively; the other end of the inductor L7, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 are connected with a direct-current voltage; the other terminal of the capacitor C1, the other terminal of the capacitor C2, and the other terminal of the capacitor C3 are commonly grounded.
R1 and C7 are used for adjusting the feedback coefficient of the amplifier and changing the overall amplification factor; the C1, C2 and C3 are used for filtering the power supply and the radio frequency signals.
The amplifier is model GRF 2105.
The utility model can make the harmonic waves generated by the signal of the amplifier of the utility model offset each other through the bridge module, so that the signal can achieve the amplification effect, simultaneously generate extremely small harmonic waves, and does not influence the subsequent link, thereby improving the accuracy of signal processing and meeting the frequency measurement system with higher requirements.
Claims (6)
1. A deeply saturated high harmonic rejection low noise amplifier, comprising: the device comprises two bridge modules, four matching units and two amplifying modules; wherein the input end of the first bridge module is connected with the input signal; the first output end of the first bridge module is connected with the input end of the first matching unit; the second output end of the first bridge module is connected with the input end of the second matching unit; the output end of the first matching unit is connected with the input end of the first amplifying module; the output end of the second matching unit is connected with the input end of the second amplifying module; the output end of the first amplification module is connected with the input end of the third matching unit; the output end of the second amplification module is connected with the input end of the fourth matching unit; the output end of the third matching unit is connected with the first input end of the second bridge module; the output end of the fourth matching unit is connected with the second input end of the second bridge module; the output end of the second bridge module is the output end of a low noise amplifier with deep saturation and high harmonic suppression.
2. A deeply saturated high harmonic rejection low noise amplifier according to claim 1, wherein: the first bridge module comprises an inductor L1, an inductor L2, an inductor L3, an inductor L4, an inductor L5 and an inductor L6; one end of the inductor L1 is an input end of the first bridge module; the other end of the inductor L1 is connected with an inductor L2; the other end of the inductor L2 is connected with one end of the inductor L6 and serves as a first output end of the bridge module; the other end of the inductor L6 is connected with one end of an inductor L5; the other end of the inductor L5 is connected with one end of an inductor L3 and a load respectively; the other end of the inductor L3 is connected with one end of an inductor L4; the other end of the inductor L4 is a second output end of the bridge module.
3. A deeply saturated high harmonic rejection low noise amplifier according to claim 1, wherein: the second bridge module comprises an inductor L7, an inductor L8, an inductor L9, an inductor L10, an inductor L11 and an inductor L12; one end of the inductor L10 is a first input end of the second bridge module; the other end of the inductor L10 is connected with an inductor L9; the other end of the inductor L9 is connected with one end of an inductor L11 and a load respectively; the other end of the inductor L11 is connected with one end of an inductor L12; the other end of the inductor L12 is connected with one end of the inductor L8 and serves as a second input end of the second bridge module; the other end of the inductor L8 is connected with one end of an inductor L7; the other end of the inductor L7 serves as the output terminal of the second bridge module.
4. A deeply saturated high harmonic rejection low noise amplifier according to claim 1, wherein: the matching unit comprises a resistor R1, a resistor R2 and a resistor R3; one end of the resistor R1 is connected with a grounding resistor R2 and is used as the input end of the matching unit; the other end of the resistor R1 is connected with a grounding resistor R3 and is used as the output end of the matching unit.
5. A deeply saturated high harmonic rejection low noise amplifier according to claim 1, wherein: the amplification module comprises a capacitor C4; one end of the capacitor C4 is an input end of the amplifying module; the other end of the capacitor C4 is respectively connected with the input end of the amplifier and one end of the capacitor C5; the other end of the capacitor C5 is connected with one end of a resistor R4; the other end of the resistor R4 is respectively connected with the output end of the amplifier, one end of the capacitor C6 and one end of the inductor L13; the other end of the capacitor C6 is the output end of the amplifying module; the other end of the inductor L13 is connected with one end of a capacitor C1, one end of a capacitor C2 and one end of a capacitor C3 respectively; the other end of the inductor L7, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3 are connected with a direct-current voltage; the other end of the capacitor C1, the other end of the capacitor C2 and the other end of the capacitor C3 are commonly grounded.
6. The deeply saturated high harmonic rejection low noise amplifier of claim 5, wherein: the amplifier is of the type GRF 2105.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121943887.XU CN215818061U (en) | 2021-08-18 | 2021-08-18 | Low-noise amplifier with deep saturation and high harmonic suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121943887.XU CN215818061U (en) | 2021-08-18 | 2021-08-18 | Low-noise amplifier with deep saturation and high harmonic suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215818061U true CN215818061U (en) | 2022-02-11 |
Family
ID=80133214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121943887.XU Active CN215818061U (en) | 2021-08-18 | 2021-08-18 | Low-noise amplifier with deep saturation and high harmonic suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215818061U (en) |
-
2021
- 2021-08-18 CN CN202121943887.XU patent/CN215818061U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220115998A1 (en) | Chopper amplifying circuit employing negative impedance compensation technique | |
| CN102571227B (en) | Amplitude detection circuit with direct current offset elimination function | |
| CN114172464B (en) | Broadband harmonic suppression amplifier | |
| CN103760943B (en) | A kind of slew rate enhancing circuit being applied to LDO | |
| CN113067552A (en) | Low-noise amplifier and radio frequency front-end circuit | |
| CN104662795B (en) | Microwave amplifier | |
| CN113193840B (en) | High-linearity trans-impedance amplifier applied to silent surface filter receiver | |
| CN113225024B (en) | Low-noise voltage amplification conditioning circuit for high-resistance source measurement | |
| CN109950696B (en) | Rectifying antenna | |
| CN215818061U (en) | Low-noise amplifier with deep saturation and high harmonic suppression | |
| CN109391236A (en) | A kind of signal amplification circuit and millimeter-wave signal amplifying circuit | |
| CN110233599A (en) | E-Band microwave F power-like amplifier based on CMOS | |
| CN215773545U (en) | Direct current servo circuit | |
| CN113659935B (en) | Gaussian pulse power amplifier and transmitter | |
| CN220896660U (en) | High-harmonic suppression amplifier | |
| CN216210570U (en) | Low-temperature-drift effective value conversion circuit | |
| CN104242831A (en) | Wideband amplification device with low noise | |
| CN219164530U (en) | Underwater sound transducer small signal acquisition low-noise amplifying circuit | |
| CN213521812U (en) | Low-noise amplifier circuit of radio frequency signal processing chip | |
| CN211930599U (en) | Power amplifier with filtering function, 5G communication device and 5G communication system | |
| CN110995191A (en) | Filter network capable of switching frequency and signal processing system formed by filter network | |
| CN109728788A (en) | The frequency-shift type method of sampling, power-magnifying method and digital power amplifier | |
| CN113630688B (en) | Direct current servo circuit | |
| CN219394800U (en) | Filtering and amplifying thick film circuit for avionic instrument | |
| CN220040617U (en) | Specific frequency band sampling circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |