Title :
Improvement of carrier power to third-order intermodulation distortion power ratio in CMOS distributed amplifiers
Author :
El-Khatib, Ziad ; MacEachern, Leonard ; Mahmoud, Samy A.
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, ON, Canada
Abstract :
The design of a fully-integrated CMOS linearized distributed amplifier (DA) architectures with broadband linearization and a tunable linearity capability for ultra-wideband applications are presented. DA IIP3 linearity is improved by using feedforward, multi-tanh and cross-quad feedback distortion cancellation based CMOS DA gain cells. Simulations were performed in CMOS 0.18 ¿m process technology and the results show that reducing the IMD3 products of the linearized CMOS DA which improves the linearized DA C/IM3 power ratio.
Keywords :
CMOS analogue integrated circuits; distributed amplifiers; intermodulation distortion; linearisation techniques; ultra wideband communication; CMOS linearized distributed amplifier; broadband linearization; cross-quad feedback distortion cancellation; feedforward distortion; multitanh distortion; size 0.18 mum; third-order intermodulation distortion power ratio; tunable linearity; ultrawideband applications; CMOS technology; Circuits; Distributed amplifiers; Feedback; Frequency; Intermodulation distortion; Linearity; Linearization techniques; Nonlinear distortion; Ultra wideband technology; CMOS Distributed Amplifier; Carrier Power; Cross-Quad Feedback; Feedforward; Linearization Techniques; Multi-Tanh; Radio Over Fibre; Third-order Intermodulation Distortion Cancellation IMD3; Ultra-WideBand Communications;
Conference_Titel :
Microelectronics, 2008. ICM 2008. International Conference on
Conference_Location :
Sharjah
Print_ISBN :
978-1-4244-2369-9
Electronic_ISBN :
978-1-4244-2370-5
DOI :
10.1109/ICM.2008.5393500
