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一、前言把微处理机引入到一个高性能接收机是应用先进的LSI器件的又一个例子。本文的主要内容是对老式接收机与具有综合控制特点的新式接收机进行比较。二、H2540接收机的关键特征H2540接收机是大约四年前介绍的。它是一个高性能的MF/HF固体独立边带通信接收机,15kHz～30MHz的频率范围完全是由频率合成器产生的,频率间隔为1Hz.为了实现优良的技术性能,几个特征特别是由互调引起的失真电平和接收机噪声系
I. INTRODUCTION Introducing microprocessors into a high-performance receiver is yet another example of a state-of-the-art LSI device. The main content of this article is to compare the old receiver with the new receiver with integrated control features. Second, the H2540 receiver key features H2540 receiver is introduced about four years ago. It is a high performance MF / HF solid independent sideband communication receiver with a frequency range of 15 kHz to 30 MHz being entirely produced by a frequency synthesizer with a frequency separation of 1 Hz. In order to achieve excellent technical performance, several features, notably by Distortion levels caused by intermodulation and receiver noise