Abstract:

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.

Key words: linear channel;logarithmic channel;transient response