Title :
An ultra-wideband CMOS low noise amplifier for 3-5-GHz UWB system
Author :
Kim, Chang-Wan ; Kang, Min-Suk ; Anh, Phan Tuan ; Kim, Hoon-Tae ; Lee, Sang-Gug
Author_Institution :
Inf. & Commun. Univ., Daejeon, South Korea
Abstract :
An ultra-wideband (UWB) CMOS low noise amplifier (LNA) topology that combines a narrowband LNA with a resistive shunt-feedback is proposed. The resistive shunt-feedback provides wideband input matching with small noise figure (NF) degradation by reducing the Q-factor of the narrowband LNA input and flattens the passband gain. The proposed UWB amplifier is implemented in 0.18-μm CMOS technology for a 3.1-5-GHz UWB system. Measurements show a -3-dB gain bandwidth of 2-4.6GHz, a minimum NF of 2.3 dB, a power gain of 9.8 dB, better than -9 dB of input matching, and an input IP3 of -7dBm, while consuming only 12.6 mW of power.
Keywords :
CMOS integrated circuits; feedback; network topology; ultra wideband technology; wideband amplifiers; 12.6 mW; 3 to 5 GHz; 9.8 dB; CMOS integrated circuit; UWB system; circuit topology; g-factor; gain bandwidth; noise figure degradation; power gain; resistive shunt-feedback; ultra-wideband CMOS low noise amplifier; wideband input matching; Broadband amplifiers; CMOS technology; Degradation; Impedance matching; Low-noise amplifiers; Narrowband; Noise figure; Noise measurement; Topology; Ultra wideband technology;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2004.840951
