Title :
Concepts and optimization of CMOS LC_VCO circuits via geometric program
Author :
Issa, Dalenda Ben ; Kachouri, Abdennaceur ; Samet, Mounir
Author_Institution :
Lab. of Electron. & Technol. of Inf., Nat. Sch. of Eng. of Sfax, Sfax
Abstract :
A method of optimizing components and transistors sizing for CMOS LC oscillators is presented in this paper. The design constraints equations of power consumption, tank voltage amplitude, start up condition, and phase noise of VCO are offered on GP form. The VCO circuit was automatically generated using this technique in a 0.35 mum CMOS process, which is also modeled in a form compatible with geometric programming. The results show the sizing of components of the complementary integrated LCVCO and the optimal trade-off curve between minimum power and minimum phase noise.
Keywords :
CMOS integrated circuits; geometry; integrated circuit design; mathematical programming; phase noise; transistors; voltage-controlled oscillators; CMOS LC VCO circuits; component optimisation; design constraints equations; geometric programming; phase noise; size 0.35 mum; transistors sizing; CMOS process; Circuits; Energy consumption; Equations; Optimization methods; Phase noise; Semiconductor device modeling; Solid modeling; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Design and Technology of Integrated Systems in Nanoscale Era, 2008. DTIS 2008. 3rd International Conference on
Conference_Location :
Tozeur
Print_ISBN :
978-1-4244-1576-2
Electronic_ISBN :
978-1-4244-1577-9
DOI :
10.1109/DTIS.2008.4540268
