平均频率合成技术

Mean Frequency Synthetic Technique

提出一种新的平均频率合成技术，给出了两种较实用的实现方法。平均频率合成技术的特点是瞬时频率不稳定，而平均频率的误差很小。平均频率合成器具有电路简单及换频方便、快捷的优点。文中给出的分频法平均频率合成器已成功地用于作者所设计的Ｂ超仪中。

A new mean frequency synthetic technique is proposed in this peper. Two most practicalimplementation methods are given too. The feature of the mean frequency synthetic technique is theunstabillty of instant frequency and less error of mean frequency.The mean frequency synthesizer isexcellent for its simple circuit and fast frequency switching. The mean frequency synthesizer which usesfrequency divider given here is successfully used in the B mode scanner designed by the authors.