In the premise analyzing the principle of the driver circuits, the system developed uses the monolithic integrated phase-locked loop ( PLL) and the double balance amplitude modulator, the isolated components are placed, so the difficulty of the RF signal transmission is resolved. 分析驱动器的工作原理,我们采用集成锁相环和双平衡幅度调制器,解决了分立元件高频电路设计复杂的困难;
At present some reports on hybrid vector modulators have been published, while the research of monolithic integrated balance vector modulator is still at the starting stage. 从本世纪初开始国内开始了该领域的研究工作,并公开报道了一些混合式矢量调制器的文献报道,单片集成平衡矢量调制器的研制正在起步阶段。