Application of a PLL Combining DDS Reference in Modern Radio Design
Jiang Ying-chao · Electronic Engineer · 2007
Basing on the discussion of principle and characteristic of direct digital frequency synthesis(DDS) and phase-locked loop frequency synthesis(PLL),a design scheme of frequency synthesizer combining direct digital synthesis used for modern radio is given.PLL frequency synthesizer with DDS reference will adapt to local oscillator of modern radio.