Title :
VCOOPT: a tool for VCO phase noise optimization
Author :
Kratyuk, Volodymyr ; Mayaram, Kartihzya
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
We have implemented an optimization technique for the automated design of RF LC CMOS voltage controlled oscillators (VCO) with low phase noise given a set of specifications. The electromagnetic solver ASITIC combined with the circuit simulator SpectreRF allows optimization of the VCO circuit parameters and inductor layout. Our approach gives a phase noise improvement of up to 20 dBc/Hz in the flicker noise region and up to 5 dBc/Hz in the thermal noise region. An optimization program for the computer-aided design of on-chip spiral inductors has also been developed. This program allows the designer to obtain the layout of a required inductance value with a maximal quality factor.
Keywords :
CMOS integrated circuits; circuit layout CAD; circuit optimisation; circuit simulation; flicker noise; phase noise; radiofrequency integrated circuits; thermal noise; voltage-controlled oscillators; ASITIC electromagnetic solver; CMOS VCO; RF LC VCO; SpectreRF circuit simulator; VCOOPT tool; automated design; circuit optimization; computer-aided design; flicker noise region; inductance value; inductor layout; maximal quality factor; on-chip spiral inductors; phase noise optimization; thermal noise region; voltage controlled oscillators; 1f noise; Circuit noise; Circuit simulation; Computational modeling; Design optimization; Electromagnetic induction; Inductors; Phase noise; Radio frequency; Voltage-controlled oscillators;
Conference_Titel :
Radio and Wireless Conference, 2002. RAWCON 2002. IEEE
Print_ISBN :
0-7803-7458-4
DOI :
10.1109/RAWCON.2002.1030147
