查询词典 variable gain

Band-pass filter and time-variable-gain amplifier of receiving circuit are also discussed.

信号接收电路设计上，分析较为关键的带通滤波器的设计和时变增益模块的设计。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

AD8348 is a broadband quadrature demodulator with an integrated intermediate frequency variable gain amplifier, and integrated baseband amplifiers.

AD8348是一个带集成中频可变增益和基带放大器的宽带正交解调器。

AD8348 is a broadband quadrature demodulator with an integrated intermediate frequency variable gain amplifier, and integrated basebandamplifiers.

AD8348是一个带集成中频可变增益和基带放大器的宽带正交解调器。

Simulation results show that the Filter and VGA system has gain of 6~48 dB, variable gain of 42 dB,6 dB/Step, THD54 dBc at 100 mV peak-to-peak input voltage, IIP3 of-6.35 dBV. The NF is less than 25 dB and current dissipation is 30 mA from 1.8 V voltage supply.

电路的仿真结果表明滤波器和VGA系统的增益为6~48 dB，可变增益为42 dB，6 dB/step，在输入电压峰峰值为100 mV时THD小于-54 dBc，线性度为-6.35 dBV，噪声系数在通带内小于25 dB，消耗电流为30 mA。

This paper introduces the variable gain solenoid valve control system.

本文介绍一种"可变增益电磁阀控制系统"。

Variable gain amplifier is an analog circuit, which varies gain, adjusts signal dynamic range and stabilizes signal power.

可变增益放大器是模拟单元电路之一，起着变化增益、调整信号动态范围、稳定信号功率的作用。

This paper presents a low-voltage low-power variable gain amplifier,which is applied in the automatic gain control loop of a super heterodyne receiver.

针对超外差接收机的自动增益控制网络，设计了一种结构简单的低压、低功耗全差分可变增益放大器。

It features variable gain and variable tube process saturation for adding harmonics.

该放大器使用可调增益及可调电子管处理使音色饱满

Techniques to linearly adjust the gains of variable gain elements (i.e., variable gain amplifiers or VGAs) in a receiver of transmitter.

线性地调节发射机的接收机内的可变增益元件(即，可变增益放大器或VGA)的增益的技术。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。