← 返回 JSSC 论文列表JSSC 2011第3期RF & Wireless0.18μmPLL
A 24 GHz Wideband Open-Loop GFSK Transmitter With Phase Quantization Noise Cance
提出一种采用相位量化噪声消除技术的24 GHz宽带开环GFSK发射机
0.18μm CMOS, 2.4GHz, 20Mb/s GFSK, 3.2% rms误差, 34.5mA电流
相位调制GFSK发射机噪声消除开环架构宽带调制
▸相位量化噪声消除技术：通过引入第二VCO控制端口实现相位量化噪声的主动消除，将带外相位量化噪声降低49dB，显著提升信号纯净度（系统创新）
▸开环调制架构实现超宽频带相位调制：采用开环结构替代传统锁相环闭环调制，通过相位生成器选择目标相位，支持超过10倍调制信号带宽的相位合成（架构创新）
▸双路径噪声抑制方法：结合主相位调制路径与辅助噪声消除路径，实测实现至少7dB的相位噪声抑制，RMS误差仅3.2%（方法创新）
▸高能效数字相位调制器：在0.18μm CMOS工艺下实现24GHz工作频率，整机功耗34.5mA（不含缓冲器），满足高速（20Mb/s GFSK）低功耗通信需求（电路创新）
Abstract
hakar Pamarti , Member , IEEE
Abstract—A wide-bandwidth phase modulation transmitter
with phase quantization noise cancellation technique is proposed.
Unlike conventional phase-locked loop closed-loop modulation,
very wide-bandwidth arbitrary phase modulation can be syn-
thesized at the phase-locked loop output by selecting the desired
phases that are generated by a phase generator. To further reduce
the phase quantization noise due to the finite number of available
phases, a phase quantization n