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引言随着集成电路在我国的迅速发展,数字技术在国民经济各个部门中得到了越来越广泛的应用。近几年来,在短波通信装备中采用数字技术所体现出来的体积小、重量轻、调试简单、成本低等优点,也得到愈来愈充分的肯定。正由于上述原因,数字式频率合成技术在我国也得到飞快发展。下面介绍的是一种较为简单,但又能满足目前短波通信中各项技术要求的双环方案。
INTRODUCTION With the rapid development of integrated circuits in our country, digital technology has been applied more and more widely in all sectors of the national economy. In recent years, the advantages of small size, light weight, simple debugging and low cost, which are embodied in digital technology in shortwave communications equipment, have also been more and more fully affirmed. It is precisely because of the above reasons, digital frequency synthesis technology in our country has also been rapid development. The following is a more simple, but can meet the technical requirements of the current shortwave dual-ring program.