The phase noise of the design plan of DRO +PLL has been analyzed. The loop filter has been designed for PLL with CAD. The frequency synthesizer in X-band has been designed.

• 同时,本文还分析了DRO 稳频锁相设计方案的相位噪声指标,利用软件对锁相环的环路滤波器进行了设计,研制了X 波段的点频锁相源。