Title :
A switched-inductor based VCO with an ultra-wideband tuning range of 87.6 %
Author :
Qing, Liu ; Jiangtao, Sun ; Kurachi, Satoshi ; Itoh, Nobuyuki ; Yoshimasu, Toshihiko
Author_Institution :
Grad. Sch. of Inf., Production & Syst., Waseda Univ., Kitakyushu, Japan
Abstract :
A novel switched-inductor based resonator is proposed to implement an ultra-wideband VCO. The VCO is designed and fabricated using 0.13 ¿m CMOS and fully evaluated on wafer. The measured results show that the proposed VCO has a tuning range as high as 87.6% spanning from 1.81 GHz to 4.63 GHz. The measured phase noise of -124.4 dBc/Hz at 1 MHz offset from the 1.81 GHz carrier is obtained.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; inductors; phase noise; resonators; voltage-controlled oscillators; CMOS; frequency 1.81 GHz to 4.63 GHz; phase noise; size 0.13 mum; switched-inductor based VCO; switched-inductor based resonator; ultrawideband VCO; voltage-controlled oscillators; Communication switching; Frequency; Inductors; Phase noise; Sun; Tuning; Ultra wideband technology; Varactors; Voltage-controlled oscillators; Wireless communication; AMOS varactor banks; Low phase noise; Switched inductor; Ultra-wideband VCO;
Conference_Titel :
ASIC, 2009. ASICON '09. IEEE 8th International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-1-4244-3868-6
Electronic_ISBN :
978-1-4244-3870-9
DOI :
10.1109/ASICON.2009.5351421
