Title :
Analysis of steady-state common-mode response in differential LC-VCOs
Author :
Doldán, R. ; Ginés, A.J. ; Peralías, E. ; Rueda, A.
Author_Institution :
Inst. de Microelectron. de Sevilla, Univ. of Seville, Sevilla, Spain
Abstract :
This paper analyzes the common-mode response of LC voltage-controlled oscillators (VCOs) in DC and periodic steady state regimes. The dependence of the common-mode voltage (vcm) on the oscillation amplitude is theoretically studied. Closed and simple expressions for vcm suitable for the VCO design and optimization are derived. The agreement with transistor level simulations has been verified in a 1.2V low-power 90nm CMOS case of study.
Keywords :
CMOS analogue integrated circuits; LC circuits; MOSFET; circuit oscillations; optimisation; voltage-controlled oscillators; LC voltage-controlled oscillator; differential LC-VCO design; low power CMOS processing; optimization; oscillation amplitude; size 90 nm; steady-state common-mode voltage response; transistor level simulation; voltage 1.2 V; Integrated circuit modeling; Optimization; Radio frequency; Steady-state; Transistors; Voltage-controlled oscillators; Common-Mode Voltage; LC-VCO; RF; VCO design and optimization;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271679