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A novel millimeter-wave receiver output signal dynamic expansion device

An output signal, dynamic expansion technology, applied in transmission systems, electrical components, etc., can solve the problems of reduced receiver sensitivity, limited dynamic range expansion, etc., to ensure detection sensitivity and reduce power consumption.

Active Publication Date: 2020-12-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing devices are completed by voltage-current converters, multipliers, RC filter circuits and general operational amplifiers. This method has problems such as reducing the sensitivity of the receiver and limiting the expansion of the dynamic range.

Method used

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  • A novel millimeter-wave receiver output signal dynamic expansion device
  • A novel millimeter-wave receiver output signal dynamic expansion device
  • A novel millimeter-wave receiver output signal dynamic expansion device

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Embodiment Construction

[0016] combine figure 1 , a novel millimeter-wave receiver output signal dynamic extension device, which is composed of a differential amplifier, a first voltage follower, a second voltage follower, an STM32 single-chip microcomputer, a subtractor, a logarithmic amplifier and a resistor network;

[0017] The output terminal of the differential amplifier is connected with the positive terminal of the subtractor, the output terminal of the subtractor is connected with the input terminal of the logarithmic amplifier, the output terminal of the logarithmic amplifier is connected with the input terminal of the second voltage follower, and the output terminal of the second voltage follower is The terminal is connected with the STM32 microcontroller, the DAC output of the STM32 microcontroller is connected with the resistor network, the output terminal of the resistor network is connected with the first voltage follower, and the output terminal of the first voltage follower is connect...

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Abstract

The invention discloses a novel millimeter wave receiver output signal dynamic expansion device comprising a differential amplifier, a first voltage follower, a second voltage follower, an STM32 single chip microcomputer, a subtracter, a logarithmic amplifier and a resistance network; the amplification receiver outputs an analog signal, and the analog signal is sampled via the STM32 single chip microcomputer and performs feedback modulation. According to the device provided by the invention, the problem of detection oversaturation due to the fact that the dynamic range of an output signal of the millimeter wave receiver is over large is solved, expansion on the analog signal is achieved, and meanwhile detection sensitivity is ensured.

Description

technical field [0001] The invention relates to a signal dynamic expansion device, in particular to a novel millimeter wave receiver output signal dynamic expansion device. Background technique [0002] The output signal of the existing millimeter-wave receiver changes according to the characteristics of the slow-varying signal. The dynamic range of the receiver output signal is the range of input signal strength that the receiver can work normally. Under the condition that the internal noise level of the receiver is constant, if the signal is too weak, it cannot be detected; if the signal is too strong, the receiver will be saturated and overloaded, and the target echo will be significantly reduced or even lost. Therefore, dynamic range is an important quality indicator for the output of mmWave receivers. [0003] The minimum input signal strength usually takes the smallest detectable signal; the maximum allowable input signal strength is determined according to the requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16
CPCH04B1/16
Inventor 彭树生张竣昊毛誉杰何烨葛玲玉方天宇
Owner NANJING UNIV OF SCI & TECH