题目/Title：A ΔΣ fractional-N synthesizer with customized noise shaping for WCDMA/HSDPA applications

作者/Author：
                        Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang,Hyung Ki Ahn,Byeong-Ha Park

会议/Conference：CICC 2008

地点/Location：San Jose, CA

年份/Issue Date：2008.21-24 Sept.

页码/pages：pp. 753 - 756

摘要/Abstract：
This paper describes a quantization noise reduction method in DeltaSigma fractional-N synthesizer design based on a semidigital approach. By employing a phase shifting technique, a low power hybrid finite impulse response (FIR) filtering is realized which is suitable for RF applications. A prototype fractional-N synthesizer is implemented in 180 nm CMOS for WCDMA/HSDPA applications. Experimental results show that the proposed method can effectively suppress out-of-band phase noise to meet the phase noise mask requirements in various RF applications.