← 返回 JSSC 论文列表JSSC 2009第8期RF & Wireless180nm
A 16Fractional-N Synthesizer With Customized Noise Shaping for WCDMAHSDPA Applic
本文提出了一种基于半数字方法的分数N合成器量化噪声降低技术，适用于WCDMA/HSDPA应用。
180nm CMOS, 满足HSDPA相位噪声要求, 建立时间小于150μs
分数N合成器量化噪声降低FIR滤波WCDMA/HSDPA相位噪声
▸采用相位偏移技术实现低功耗混合FIR滤波
▸结合混合FIR滤波，单环拓扑使4阶和5阶ΔΣ调制器成为可能
▸满足WCDMA/HSDPA对相位噪声的严格要求
Abstract
, Member , IEEE, Hyung Ki Ahn, Byeong-Ha Park , Member , IEEE,
and Zhihua Wang , Senior Member , IEEE
Abstract—This paper describes a quantization noise reduc-
tion method in /1/6 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. Combined with the hybrid
FIR filtering, single-loop topology makes 4th-order and 5th-order
/1/6 modulators