CMOS Quadrature Modulator and Up-Conversion Mixer for802.11a Wireless LAN Systems
基于802.11a标准的CMOS正交调制器和上变频器
Keywords: RFIC,CMOS technology,quadrature modulator,up-conversion mixer,Gilbert cell
射频集成电路,CMOS工艺,正交调制器,上变频器,Gilbert单元,RFIC,CMOS,technology,quadrature,modulator,up-conversion,mixer,Gilbert,cell,标准,CMOS,正交调制器,上变频器,Mixer,Modulator,Quadrature,Systems,power,supply,transducer,power,gain,circuit,measurement,results,show,input,resonant,tank,load,upconversion
Abstract:
采用0.18μm CMOS工艺,设计并实现了应用于WLAN IEEE 802.11a的正交调制器和上变频器.正交调制器在传统的Gilbert单元基础上,采用负反馈跨导放大器来提高线性度;上变频器采用LC谐振网络作混频器负载来提高增益和电压输出摆幅.测试结果表明,在1.8V电源电压下,谐振频率点的1dB压缩点P1dB为-3.6dBm,功率转换增益为-3.6dB,电流消耗大约45.8mA.
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