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引言直接数字频率合成(DDS)在过去十年受到了频率合成器设计工程师极大的欢迎。首先被认为是一种具有低相位噪声和优良杂散噪声性能的灵活的频率源,基于DDS的频率合成器在许多应用中能比基于锁相环(PLL)的频率合成器有显著的优势。这些优势包括亚赫兹频率控制分辨率、相位失调?
Introduction Direct digital frequency synthesis (DDS) has been greatly welcomed by frequency synthesizer design engineers for the past decade. First considered as a flexible frequency source with low phase noise and excellent spurious noise performance, DDS-based frequency synthesizers offer significant advantages over phase-locked loop (PLL) based frequency synthesizers in many applications. These advantages include AHHz frequency control resolution, phase offset?