Title :
A fast start-up 3GHz–10GHz digitally controlled oscillator for UWB impulse radio in 90nm CMOS
Author :
De Heyn, V. ; Van der Plas, Geert ; Ryckaert, Julien ; Craninckx, Jan
Author_Institution :
IMEC, Leuven
Abstract :
A digitally controlled ring oscillator, key component of a UWB transceiver, is presented. The design supports the IEEE 802.15.4 standard for which all bands between 3 and 10 GHz can be synthesized with frequency steps as small as 4 MHz, it is to be embedded in a low power fast startup phase- aligned frequency-locked loop requiring a duty-cycled operation of the DCO with a settling time below 2 ns. The average power consumption ranges from 0.3 mW at 3 GHz up to 1 mW at 10 GHz in 90 nm IV digital CMOS.
Keywords :
CMOS digital integrated circuits; MMIC; frequency locked loops; integrated circuit design; microwave oscillators; personal area networks; ultra wideband communication; IEEE 802.15.4 standard; UWB impulse radio; digital CMOS; digital controlled ring oscillator; duty-cycled operation; frequency 3 GHz to 10 GHz; frequency 4 MHz; low power fast startup phase- aligned frequency-locked loop; power 0.3 mW to 1 mW; size 90 nm; time 2 ns; Circuits; Clocks; Digital control; Energy consumption; Frequency locked loops; Frequency synthesizers; Jitter; Oscillators; Radio control; Tuning;
Conference_Titel :
Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Conference_Location :
Munich
Print_ISBN :
978-1-4244-1125-2
DOI :
10.1109/ESSCIRC.2007.4430347
