题目/Title：Customized Zero Frequency Control for Hybrid FIR Noise Filtering in ΔΣ Fractional-N PLL

作者/Author：乔健,喻学艺,李宇根,王志华
                        Jian Chen,Xueyu Yu,Li Yugen,Zhihua Wang

会议/Conference：ISCAS 2009

地点/Location：Taiwan

年份/Issue Date：2009.24 May

页码/pages：pp. 2401 - 2404

摘要/Abstract：
This paper describes a method to control the zero frequency of hybrid finite impulse response (FIR) filter in ΔΣ fractional-N PLL for quantization noise reduction. By adjusting the current allocation in different branches of the charge pump, transfer function of the FIR filter can be customized to meet various system requirements. Simulation results shows that the proposed method effectively adds flexibility to the hybrid FIR noise filtering technique while it also helps to reduce the hardware complexity.