高线性度上变频混频器设计2004 年 12 月Chi nese Journal of E l ectron D evi cesD ec. 2004A Highly Linear Up-conversion Mixer in 0.25 μ m CMO S TechnologyLI Ming,TANG Shou-lo ng,LUO Lan,HUANG Cheng, SH I Long-xing(Natio nal ASIC System Engineering Research Center , Southeast University , Nanj ing 2 1 00 9 6, China )Abstract:T hi s paper gi ves a bri ef i ntroducti on to doubl e-conversi on recei ver and i ts advantages, and desi gns an up -conversi on m i x er for double-conversi on D T V tuner i n 0. 25 μ m C M O S technol ogy . Si m ul ati on resul ts i ndi cate good perform ance w i th 3 dB conversi on gai n,and 10 dB m IIP 3. T he gai n vari ety i sl ess th an 0.5 dB w i thi n 50～860 M H z range. T he m i xer consum es 20 m A current i n single 3.3 V suppl y. T he ch i p i s tested and good frequency-m i……