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Large dynamic range ALC protection circuit with temperature compensation function

A technology with large dynamic range and protection circuit, applied in power amplifiers, improved amplifiers to reduce temperature/power supply voltage changes, electrical components, etc., can solve problems such as large output power fluctuations, narrow input signal control range, etc., and achieve simple circuit form , easy to achieve, and the effect of reducing fluctuations

Active Publication Date: 2018-03-30
XIAN INSTITUE OF SPACE RADIO TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is: a large dynamic range ALC protection circuit with temperature compensation function is proposed, which solves the problems of narrow input signal control range of traditional ALC protection circuit, large fluctuation of output power under high and low temperature conditions, etc.

Method used

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  • Large dynamic range ALC protection circuit with temperature compensation function
  • Large dynamic range ALC protection circuit with temperature compensation function
  • Large dynamic range ALC protection circuit with temperature compensation function

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Embodiment Construction

[0026] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] The invention proposes a highly integrated and large dynamic range ALC protection circuit with a temperature compensation function, which adds the temperature compensation function to ensure that the output gain fluctuation of the product meets the requirements under high and low temperature conditions. The entire circuit is designed and produced using a multi-chip module (MCM), and the circuit meets the requirements of miniaturization, light weight, and mass production, and has broad application prospects.

[0029] In order to achieve a dynamic range of input power greater than 100dB, a variable gain amplifier (VGA) introduces a multi-stage amplifier and a voltage-controlled attenuator. The specifi...

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Abstract

The invention provides a large dynamic range ALC protection circuit with the temperature compensation function. The large dynamic range ALC protection circuit with the temperature compensation function comprises a variable gain amplifier, an ALC detector and an integral control circuit. The dynamic range of the input radio-frequency power is larger than 100dB; the output power gain fluctuation ofthe product is less than 0.5dB at a high and a low temperature; a circuit theory design method is completely provided, and the simulation and actual measurement verification is performed; and the whole circuit is designed and produced by multi-chip modules (MCM); therefore, the circuit meets the requirements of miniaturization, lightweight and batch production, and has broad application prospects.

Description

technical field [0001] The invention relates to a large dynamic range ALC protection circuit with a temperature compensation function, belonging to the technical field of microwave circuits. Background technique [0002] The loop automatic gain control (ALC) circuit is widely used in active products such as radar / communication receivers, solid-state amplifiers, LCAMPs, etc. as an active microwave circuit. The size of the signal level changes, so as to maintain the stability of the system output signal level. [0003] At present, the ALC circuit used in most products does not consider the influence of high and low temperature environments on the circuit, and it is difficult to have a steep transition zone, which affects the dynamic adjustment range and response time of the system. Contents of the invention [0004] The technical problem of the present invention is: a large dynamic range ALC protection circuit with temperature compensation function is proposed, which solves...

Claims

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Application Information

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IPC IPC(8): H03F1/30H03F3/189H03F3/20H03G3/30
CPCH03F1/30H03F3/189H03F3/20H03G3/30
Inventor 苏璞朱光耀王程赵莹殷康
Owner XIAN INSTITUE OF SPACE RADIO TECH
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