本文介绍我国第一套低功耗通讯集成电路的设计原理,主要性能指标及其在现代通讯中的应用。该系列集成电路具有功耗低、灵敏度高、噪音低、失真小、效率高、性能可靠等特点。用其组装的国内袖珍电台首次通过部颁80系列机标准,部分参数已达国际水平。为实现接收机的良好性能,目前多采用二次变频法。我国第一中频为10.7MHz,第二 This article introduces the design principle, main performance index and its application in the modern communication of our country’s first low-power communication integrated circuit. The series of integrated circuits with low power consumption, high sensitivity, low noise, low distortion, high efficiency, reliable performance and so on. With the assembly of its own pocket radio for the first time passed ministerial 80 series machine standards, some of the parameters have reached the international level. In order to achieve good performance of the receiver, the current use of the second frequency conversion method. China’s first IF is 10.7MHz, the second