Title :
A triple-band flexible low-noise transmitter with linearity enhancement
Author :
Yilei Li ; Chuansheng Dong ; Kefeng Han ; Cheng Zhang ; Yongchang Yu ; Xi Tan ; Na Yan ; Hao Min
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
A low-noise triple band transmitter for GSM triple-band and WCDMA is presented. By programming parameters, analog baseband and RF frontend can handle signals of different protocols and frequency bands. Novel linearization method is used in LPF and driver amplifier to meet the demand of 3G systems. Noise optimization is also adopted so that our transmitter achieves -157 dBc/Hz noise at 190 MHz frequency offset in WCDMA band, which eliminates external SAW filter.
Keywords :
cellular radio; code division multiple access; low noise amplifiers; radio transmitters; GSM triple-band; LPF; RF frontend; SAW filter; WCDMA; analog baseband; driver amplifier; frequency 190 MHz; linearity enhancement; linearization method; low-noise triple band transmitter; noise optimization; triple-band flexible low-noise transmitter; Arrays; Mixers; Multiaccess communication; Noise; Radio frequency; Radio transmitters; Spread spectrum communication;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6272170
