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A High Stability Power Reference Generation Circuit

A technology for generating circuits and high stability, applied in the direction of adjusting electrical variables, instruments, control/regulation systems, etc., can solve problems such as low production efficiency, and achieve the effects of convenient production and debugging, high power accuracy, and simple production

Active Publication Date: 2019-10-11
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The output power accuracy can only reach 1.5% in the whole temperature range;
[0004] 2. Temperature compensation needs to be done separately, and the production efficiency is relatively low

Method used

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  • A High Stability Power Reference Generation Circuit
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Embodiment Construction

[0022] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0023] combine figure 1 and figure 2 , a high stability power reference generation circuit, such as figure 1 As shown, it includes a DAC unit 1 and a switch control unit 6. The DAC unit 1 is connected to a power adjustment unit 2, the power adjustment unit 2 is connected to an ALC power stabilization unit 3, and the ALC power stabilization unit 3 is connected to a self-oscillating unit 4. The self-oscillating unit 4 is connected with a port standing wave matching unit 5 , and the switch control unit 6 is connected with the ALC power amplitude stabilizing unit 3 and the self-oscillating unit 4 respectively.

[0024] The DAC unit 1 , the power adjustment unit 2 , the port standing wave matching unit 5 and the switch control unit 6 are all common circuits in the field.

[0025] Among them, the DAC unit 1 is a 16-bit serial...

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Abstract

The present invention provides a high stability power reference generation circuit, including a DAC unit and a switch control unit, the DAC unit is connected with a power adjustment unit, the power adjustment unit is connected with an ALC power stabilization unit, and the ALC power stabilization unit is connected with an automatic The oscillation starting unit is connected with a port standing wave matching unit, and the switch control unit is connected with the ALC power amplitude stabilizing unit and the self-oscillating unit respectively. In the ALC power stabilization unit and self-oscillation unit, the varactor diode self-oscillation circuit design is adopted, and two sets of diodes are used to compensate the influence of temperature on power. The circuit design is simple, and the power reference generation circuit outputs a fixed frequency of 50MHz, continuous wave signal with a fixed power of 1.000mW, this power reference generation circuit has high power accuracy and a small VSWR of the output port.

Description

technical field [0001] The invention relates to the field of power reference generation circuits, in particular to a high-stability power reference generation circuit. Background technique [0002] The existing power reference generating circuit is composed of a crystal oscillator, a power amplifier circuit, an ALC voltage control loop, etc., and the existing power reference generating circuit has the following disadvantages: [0003] 1. The output power accuracy can only reach 1.5% in the whole temperature range; [0004] 2. Temperature compensation needs to be done separately, and the production efficiency is relatively low. [0005] Therefore, it is necessary to design a new power reference generating circuit. Contents of the invention [0006] Aiming at the shortcomings of the existing power reference generation circuit, the present invention provides a high stability power reference generation circuit with high power accuracy and small standing wave ratio of the out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/567
Inventor 李金山冷朋赵浩李强徐达旺刘元商陈兴腾
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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