Title :
25 GHz and 28 GHz Wide Tuning Range 130 nm CMOS VCOs with Ferroelectric Varactors
Author :
Aspemyr, Lars ; Kuylenstierna, Dan ; Sjöland, Henrik ; Vorobiev, Andrei ; Gevorgian, Spartak
Author_Institution :
Ericsson AB, Stockholm
Abstract :
Two 130nm CMOS VCOs with ferroelectric varactors are presented. The cross-coupled VCO-cores are flip-chip mounted on silicon carriers with integrated inductors and tunable ferroelectric varactors. The output frequency of the first VCO is tunable from 23.4 GHz to 26.1 GHz, corresponding to a tuning range of 11 %. The phase noise of this VCO, tuned to its center frequency, measures -117 dBC/Hz at 1 MHz offset and the power consumption is 18 mW. The second VCO is tunable from 25.8 GHz to 30.5 GHz, corresponding to a tuning range of 17 %. The phase noise at center frequency for this design measures -109 dBc/Hz and the power consumption is 5.3 mW.
Keywords :
CMOS analogue integrated circuits; MMIC oscillators; circuit tuning; ferroelectric capacitors; flip-chip devices; varactors; voltage-controlled oscillators; cross-coupled VCO-cores; flip-chip mounting; frequency 23.4 GHz to 26.1 GHz; frequency 25.8 GHz to 30.5 GHz; integrated inductors; phase noise; power 18 mW; power 5.3 mW; size 130 nm; tunable ferroelectric varactors; wide tuning range CMOS VCO; Energy consumption; Ferroelectric materials; Frequency measurement; Noise measurement; Phase measurement; Phase noise; Power measurement; Tuning; Varactors; Voltage-controlled oscillators; BSTO; VCO; ferroelectric; varactor;
Conference_Titel :
Radio-Frequency Integration Technology, 2007. RFIT 007. IEEE International Workshop on
Conference_Location :
Rasa Sentosa Resort
Print_ISBN :
978-1-4244-1307-2
Electronic_ISBN :
978-1-4244-1308-9
DOI :
10.1109/RFIT.2007.4443912
