现在专业的无线麦克风都是采用频率合成（PLL Synthesized）方式，可以在预设的带宽内任意切换所希望的工作频道，从而达到避免受环境干扰又能实现同时使用多支无线话筒。
基于24个网页-相关网页
采用直接数字频率合成 Direct Digital FrequenSynthesizer
本文根据无人机测控系统数据链的特点及对测控系统的要求，提出了采用频率合成技术实现数字频率源的方案。
According to the characteristics and the requirements of telemetry and telecontrol system, a digital frequency source was developed with frequency synthesizer.
发射部分采用最先进的频率合成技术，发射频率稳定。
The emission part adopts the most advanced frequencies synthetic technique, having stable emission frequency.
该芯片采用了改进的直接数字频率合成算法、流水线结构与ROM分时复用技术，保证了芯片的高性能和速度，节省了芯片面积。
A modified direct digital frequency synthesis (DDS), pipelined structure, and time-sharing ROM are adopted in the chip, for saving chip area and ensuring high performance and speed.
应用推荐