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A low-power-consumption radar constant current source

A technology of constant current source and low power consumption, which is applied in the field of low power consumption radar constant current source, which can solve problems such as affecting lighting functions and flickering lights, and achieve low power consumption, improved stability, and strong load capacity.

Inactive Publication Date: 2016-12-14
HEFEI JIARUILIN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some circuit test systems or power supply circuits, a stable constant current source is required to drive. For example, in the LED drive circuit, a constant current source must be used to drive, otherwise the light will flicker and affect the lighting function.

Method used

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  • A low-power-consumption radar constant current source

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0018] The invention provides a low power consumption radar constant current source, which consists of figure 1 Known, including:

[0019] Reference source, output reference current I ref ;

[0020] Conditioning circuit; it includes a first resistor R1, a second resistor R2, a third resistor R3, and a first capacitor C1; the second resistor R2 is connected in parallel with the first capacitor C1 after being connected in series with the first resistor R1, and the first end of the parallel connection is connected to The output end of the reference source, the second end of the parallel connection is grounded through the third resistor R3;

[0021] An operational amplifier circuit, which includes a first operational amplifier AMP1, a second operational amplifier AMP2, a trans...

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Abstract

The invention discloses a low-power-consumption radar constant current source comprising a reference source; a second resistor is connected in series with a first capacitor and then connected in parallel with a first resistor; a first end of the parallel connection is connected with a reference source output end; a second end of the parallel connection is grounded through a third resistor, connected with a reverse input end of a first operational amplifier and connected to an output end of a second operational amplifier through a seventh resistor; a non-inverting input end of the first operational amplifier is grounded through a fifth resistor and connected to an emitter of a transistor through a sixth resistor; a base of the transistor is connected to an output end of the first operational amplifier; a collector of the transistor is connected to a power supply end of the first operational amplifier; the emitter of the transistor is connected to a non-inverting end of the second operational amplifier; a connection common end is regarded as a constant current source output end; an inverting input end of the second operational amplifier is connected between the seventh resistor and the output end of the second operational amplifier; and the controller is connected between the constant current source output end and the reference source. The low-power-consumption radar constant current source of the invention realizes strong loading capability, lower power-consumption and a stable constant current source output.

Description

technical field [0001] The invention relates to the technical field of radar equipment, in particular to a low-power consumption radar constant current source. Background technique [0002] Radar uses radio to find targets and determine their spatial positions. Therefore, radar is also called "radiolocation". Radar is an electronic device that uses electromagnetic waves to detect targets. Its information carrier is radio waves. The principle is that the transmitter of the radar equipment sends electromagnetic wave energy to a certain direction in space through the antenna, and objects in this direction reflect the electromagnetic waves encountered. The radar antenna receives the reflected wave, sends it to the receiving device for processing, and extracts some information about the object (the distance from the target object to the radar, the distance change rate or radial velocity, azimuth, height, etc.). [0003] Each circuit in the radar includes a power supply circuit ...

Claims

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Application Information

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IPC IPC(8): G01S7/02G05F1/56
CPCG01S7/02G05F1/56
Inventor 罗文彬
Owner HEFEI JIARUILIN ELECTRONICS TECH
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