半导体学报2011，Vol.32Issue(8)：122-127,6.DOI:10.1088/1674-4926/32/8/085010
CMOS highly linear direct-conversion transmitter for WCDMA with fine gain accuracy
CMOS highly linear direct-conversion transmitter for WCDMA with fine gain accuracy
摘要
Abstract
A highly linear,high output power,0.13 μm CMOS direct conversion transmitter for wideband code division multiple access (WCDMA) is described.The transmitter delivers 6.8 dBm output power with 38 mA current consumption.With careful design on the resistor bank in the IQ-modulator,the gain step accuracy is within 0.1 dB,hence the image rejection ratio can be kept below -47 dBc for the entire output range.The adjacent channel leakage ratio and the LO leakage at 6.8 dBm output power are -44 dBc @ 5 MHz and -37 dBc,respectively,and the corresponding EVM is 3.6%.The overall gain can be programmed in 6 dB steps in a 66-dB range.关键词
WCDMA/ UMTS/ transmitter/ direct conversion/ CMOSKey words
WCDMA/ UMTS/ transmitter/ direct conversion/ CMOS引用本文复制引用
Li Xin,Fu Jian,Huang Yumei,Hong Zhiliang..CMOS highly linear direct-conversion transmitter for WCDMA with fine gain accuracy[J].半导体学报,2011,32(8):122-127,6.基金项目
Project supported by the National High Technology Research and Development of China (No.2009AA011605). （No.2009AA011605）
