Signal correction circuit and server

Patent metadata

Field	Value
Publication number	US-11942949-B2
Application number	US-202118247534-A
Country	US
Kind code	B2
Filing date	Sep 29, 2021
Priority date	Dec 18, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A signal correction circuit and a server are provided. The circuit comprises: a first signal processing component receiving an input signal and positive power supply voltages and negative power supply voltages, generating a first control voltage, and outputting a first voltage, the first voltage being zero within a first time period; a second signal processing component generating a second control voltage according to the first control voltage, performing energy storage charging according to the second control voltage, controlling an energy storage charging voltage according to the second control voltage, and outputting a second voltage, and the second voltage being zero in the second time period; and an output component performing superposition processing on the first voltage and the second voltage to obtain an output signal.

First claim

What is claimed is:

1. A signal correction circuit, comprising:
a first signal processing component, configured to receive an input signal, positive power supply voltages and negative power supply voltages, generate a first control voltage according to the input signal, the positive power supply voltages and negative power supply voltages, control the input signal according to the first control voltage, and output a first voltage, the first voltage is zero within a first time period, and the waveform of the first voltage in a second time period is the same as the waveform of the input signal;
a second signal processing component, electrically connected to the first signal processing component, and configured to generate a second control voltage according to the first control voltage, perform energy storage charging according to the second control voltage, control an energy storage charging voltage according to the second control voltage, and output a second voltage, the corresponding waveform of the second voltage in the first time period comprises a smooth monotonic rising curve and a straight line connected to the smooth monotonic rising curve, and the second voltage is zero in the second time period; and
an output component, electrically connected to each of the first signal processing component and the second signal processing component respectively, and configured to perform superposition processing on the first voltage and the second voltage to obtain an output signal, the waveform of the output signal in the first time period is the same as the waveform of the second voltage in the first time period, and the waveform of the output signal in the second time period is the same as the waveform of the first voltage in the second time period.

2. The signal correction circuit as claimed in claim 1 , wherein the first signal processing component comprises:
a first feedback amplification unit, configured to receive the input signal and the positive power supply voltages and negative power supply voltages, and generate the first control voltage according to the input signal, the positive power supply voltages and negative power supply voltages; and
a first N-type Metal-Oxide-Semiconductor (NMOS) tube, a grid of the first NMOS tube being electrically connected to an output end of the first feedback amplification unit, a drain of the first NMOS tube receiving the input signal, and a source of the first NMOS tube being electrically connected to an input end of the output component.

3. The signal correction circuit as claimed in claim 2 , wherein the first feedback amplification unit comprises:
a first amplifier, a negative-phase input end of the first amplifier being connected to the ground, and two power supply ends of the first amplifier being respectively connected to a positive supply voltage and a negative positive supply voltage;
a first resistor, a first end of the first resistor receiving the input signal, and a second end of the first resistor being connected to a positive-phase input end of the first amplifier; and
a second resistor, a first end of the second resistor being connected to the positive-phase input end of the first amplifier, and a second end of the second resistor being connected to an output end of the first amplifier.

4. The signal correction circuit as claimed in claim 3 , wherein the first signal processing component further comprises:
a first capacitor;
a diode, a first end of the diode receiving the input signal through the first capacitor, and a second end of the diode being connected to a drain of the first NMOS tube; and
a third resistor, a first end of the third resistor being connected to the output end of the first amplifier, and a second end of the third resistor being connected to the source of the first NMOS tube.

5. The signal correction circuit as claimed in claim 3 , wherein the first amplifier is in a positive and negative feedback state.

6. The signal correction circuit as claimed in claim 3 , wherein the third amplifier is in a negative feedback state and meets characteristics of a virtual short circuit and a virtual open circuit.

7. The signal correction circuit as claimed in claim 1 , wherein the second signal processing component comprises:
a second feedback amplification unit, configured to receive the first control voltage, and generate the second control voltage according to the first control voltage;
an energy storage unit, electrically connected to an output end of the second feedback amplification unit, and configured to perform energy storage charging in the first time period; and
a second NMOS tube, a drain of the second NMOS tube being connected to the ground through the energy storage unit, a grid of the second NMOS tube being connected to an output end of the second feedback amplification unit, and a source of the second NMOS tube being electrically connected to an input end of the output component.

8. The signal correction circuit as claimed in claim 7 , wherein the second feedback amplification unit comprises:
a fourth resistor;
a fifth resistor; and
a second amplifier, a negative-phase input end of the second amplifier being connected to an output end of the first signal processing component through the fourth resistor, a negative-phase input end and an output end of the second amplifier being connected in parallel with the fifth resistor, and two power supply ends of the second amplifier being respectively connected to a positive supply voltage and connected to the ground.

9. The signal correction circuit as claimed in claim 8 , wherein the second amplifier is in a negative feedback state, and meets characteristics of a virtual short circuit and a virtual open circuit of an operational amplifier.

10. The signal correction circuit as claimed in claim 7 , wherein the signal correction circuit further comprises:
a sixth resistor, a first end of the sixth resistor being connected to an output end of the second feedback amplification unit, and a second end of the sixth resistor being connected to a grid of the second NMOS tube;
the energy storage unit comprises:
a second capacitor, a first end of the second capacitor being connected to a drain of the second NMOS tube, and a second end of the second capacitor being connected to the ground;
a seventh resistor, the seventh resistor being connected in parallel with the second capacitor; and
an eighth resistor, a first end of the eighth resistor being connected to an output end of the second feedback amplification unit, and a second end of the eighth resistor being connected to the ground through the seventh resistor.

11. The signal correction circuit as claimed in claim 1 , wherein the output component comprises:
a ninth resistor;
a tenth resistor;
an eleventh resistor;
a twelfth resistor, a first end of the twelfth resistor being connected to the ground through the eleventh resistor; and
a third amplifier, a positive-phase input end of the third amplifier being connected to each of the output ends of the first signal processing component and the second signal processing component through the ninth resistor and the tenth resistor respectively, a negative-phase input end of the third amplifier being connected to the ground through the eleventh resistor, an output end of the third amplifier being connected to a second end of the twelfth resistor, and two power supply ends of the third amplifier being respectively connected to a positive supply voltage and connected to the ground.

12. The signal correction circuit as claimed in claim 11 , wherein the resistance of the eleventh resistor is the same as that of the twelfth resistor.

13

Assignees

• Inspur Suzhou Intelligent Technology Co Ltd

Inventors

• Wang Xu

Classifications

• H03K5/086 Primary

  generated by feedback · CPC title

• H03K3/354

  Astable circuits · CPC title

• H03K5/023 Primary

  using field effect transistors · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H03K5/1252

  Suppression or limitation of noise or interference (specially adapted for transmission systems H04B15/00, H04L25/08) · CPC title