Title :
A CMOS ultra-wideband LNA utilizing a frequency-controlled feedback technique
Author :
Soliman, Yasser ; MacEachern, Leonard ; Roy, Langis
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
A 3.1-10.6 GHz, single-stage, low noise amplifier employing a frequency dependant feedback network is reported. The amplifier was implemented in a 0.18 μm CMOS process, and attains a gain of 8 dB, input matching of -13 dB, and a minimum spot noise figure of 3.5 dB (4.4 dB average). The amplifier exploits a combination of negative and positive feedback to attain a flat gain across the entire bandwidth with an input-referred 1 dB compression at -2.48 dBm. An ultrawideband noise and power matching technique utilizing frequency dependent Miller multiplication factors is presented. This is believed to be the first application of this technique within an ultrawideband low noise amplifier.
Keywords :
CMOS integrated circuits; feedback; frequency control; low noise amplifiers; ultra wideband communication; 0.18 mum; 1 dB; 3.1 to 10.6 GHz; 3.5 dB; CMOS process; CMOS ultrawideband LNA; Miller multiplication factors; frequency dependant feedback network; frequency-controlled feedback technique; low noise amplifier; noise figure; power matching technique; Bandwidth; CMOS process; Degradation; Feedback amplifiers; Frequency; Low-noise amplifiers; Negative feedback; Receivers; Signal to noise ratio; Ultra wideband technology;
Conference_Titel :
Ultra-Wideband, 2005. ICU 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-9397-X
DOI :
10.1109/ICU.2005.1570044
