摘要
工程中,对数放大接收机的动态范围很大,但只能保持频率和相位信息,损失幅度信息。而线性接收机在AGC未建立时的动态范围很小,却可以完整保留幅度信息。文中介绍了一种双通道接收机的设计方法,该设计具有一个线性通道和一个对数通道,利用对数通道的输出,扩大了线性通道的瞬态响应范围。
In engineering,logarithmic amplifier receivers have very wide dynamic range,but it can hold only the frequency and phase information while amplitude information is lost.Linear receivers have very small a dynamic range when AGC is not established,but can reserve all amplitude information.This article introduces a double channel receiver design methods,by which the receiver has a linear channel and a logarithmic channel.Logarithm channel output is used to expand linear channel transient response range.
出处
《电子科技》
2011年第5期78-79,共2页
Electronic Science and Technology
关键词
线性通道
对数通道
瞬态响应
linear channel
logarithmic channel
transient response
