应用于WIFI收发系统的宽带低杂散频率综合器设计  

Desgin of Broadband Low Spurious Frequency Synthesizer Applied to WIFI Transceiver System

作　　者：廖春连[1,2] 李斌 曲明[1,2] 宋明宇[1,2] LIAO Chun-lian;LI Bin;QU Ming;SONG Ming-yu(The 54th Research Institute of China Electronics Technology Group Corporation;National Engineering Research Center of Communication Software and ASIC Design)

机构地区：[1]中国电子科技集团公司第五十四研究所 [2]通信软件与专用集成电路设计国家工程研究中心

出　　处：《中国集成电路》2024年第11期55-62,共8页China lntegrated Circuit

摘　　要：本文基于28nm标准CMOS工艺,提出一种适用于WIFI收发系统的频率综合器,该频率综合器电路包括鉴频鉴相器、电荷泵、宽带压控振荡器、可编程分频器和HK-MASH小数调制器。与常规的MASH结构相比,HK-MASH结构具有更好的降杂散能力。经过测试,频率综合器可提供输出频率范围为4.34GHz~6.03GHz,当输出频率为4.4GHz时,频偏10KHz处相位噪声可达到-95dBc/Hz,此时的杂散小于-60dB。当输出频率为6GHz时,频偏10KHz处相位噪声可达到-96dBc/Hz。经仿真和测试结果表明,该款频率综合器能够满足WIFI系统的使用要求。This article proposes a frequency synthesizer suitable for WIFI transceiver systems based on the 28nm CMOS process.The frequency synthesizer circuit includes frequency and phase detector,charge pump,broadband voltage controlled oscillator,programmable frequency divider and HK-MASH decimal modulator.Compared with conventional MASH structure,the HK-MASH structure has good spurious reduction ability.After testing,the frequency synthesizer can provide an out frequency range of 4.34GHz~6.03GHz.When the output frequency is 4.4GHz,the phase noise at frequency deviation of 10KHz can reach-95dBc/Hz,and the spurious is less than-60dB.When the output frequency is 6GHz,the phase noise at frequency deviation of 10KHz can reach-96dBc/Hz.The simulation and testing results show that this frequency synthesizer can meet the usage requirements of WIFI transceiver systems.

关 键 词：HK-MASH 宽带压控振荡器 频率综合器 

分 类 号：TN74[电子电信—电路与系统]