Title :
Gain-controlled CMOS Low Noise Amplifier
Author :
Jia-Sheng Hu ; Wei Li ; Jun-yan Ren
Author_Institution :
State-Key Lab. of ASIC & Syst., Fudan Univ., Shanghai
Abstract :
A gain-controlled low-noise differential amplifier (LNA) in NMOS cascoding topology, is presented based on SMIC 0.18mum RF CMOS technology. Differ from the general analysis, in this paper, the impedance matching and gain control with ESD protected pad and NF of cascoding system are discussed and optimized from implementation aspects. Measurement results show that the LNA works at the central frequency of 1.56GHz with a fairly wide -3dB bandwidth of 150MHz, maximum forward voltage gain of 27dB, NF of 2.33dB, IIP3 about 4.0dBm simultaneously and the voltage variation range is 7dB, while consuming 8.2mA current from a 3.3V power supply. The design methods can be applied for GSM and GPS wireless receiver systems
Keywords :
CMOS integrated circuits; UHF amplifiers; cascade networks; differential amplifiers; gain control; low noise amplifiers; 0.18 micron; 1.56 GHz; 150 MHz; 2.33 dB; 27 dB; 3.3 V; 8.2 mA; CMOS RFIC; CMOS low noise amplifier; ESD protected pad; GPS; GSM; NMOS cascoding topology; SMIC RF CMOS technology; gain control; gain-controlled low-noise differential amplifier; impedance matching; wireless receiver; CMOS technology; Differential amplifiers; Impedance matching; Low-noise amplifiers; MOS devices; Noise measurement; Radio frequency; Radiofrequency amplifiers; Topology; Voltage;
Conference_Titel :
Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0160-7
Electronic_ISBN :
1-4244-0161-5
DOI :
10.1109/ICSICT.2006.306315
