Title :
A 0.059-mm2 10.8-mW local oscillator for GSM systems in 65-nm CMOS
Author :
Dal Toso, Stefano ; Bevilacqua, Andrea ; Tiebout, Marc ; Da Dalt, Nicola ; Gerosa, Andrea ; Neviani, Andrea
Author_Institution :
DEI, Univ. of Padova, Padova, Italy
Abstract :
A GSM-compliant local oscillator consuming a tiny die area of only 0.059 mm2 and drawing 9 mA from a 1.2 V supply has been designed in a 65-nm CMOS process using thin-oxide devices only. The system is made of a 13 to 15 GHz LC VCO followed by a divide-by-four injection-locked frequency divider. The divider employs a ring oscillator-based topology leading to a two octave locking range with limited area and power consumption. The phase noise at the output of the system is less than -133 dBc/Hz at 3 MHz offset over the tuning range.
Keywords :
CMOS integrated circuits; cellular radio; frequency dividers; microwave oscillators; voltage-controlled oscillators; CMOS; GSM-compliant local oscillator; LC VCO; current 9 mA; divide-by-four injection-locked frequency divider; frequency 13 GHz to 15 GHz; frequency 3 MHz; power 10.8 mW; ring oscillator-based topology; size 65 nm; thin-oxide devices; voltage 1.2 V; CMOS technology; Frequency conversion; GSM; Inductors; Local oscillators; MOS devices; Phase noise; Topology; Voltage; Voltage-controlled oscillators;
Conference_Titel :
ESSCIRC, 2009. ESSCIRC '09. Proceedings of
Conference_Location :
Athens
Print_ISBN :
978-1-4244-4354-3
DOI :
10.1109/ESSCIRC.2009.5326029
