Title :
A band-switching wide-band CMOS LC QVCO for multi-standard applications
Author :
Kim, Ji-Hoon ; Yoo, Hyung-Joun
Author_Institution :
Inf. & Commun. Univ., Daejeon
Abstract :
A band-switching wide-band CMOS LC QVCO is designed. With a newly proposed LC tank, it achieves very wide tuning ranges in two separate bands: 1.94-3 GHz (42.9%) and 4.9-6 GHz (20%). In addition, it successfully satisfies the phase noise requirements of WCDMA and dual-band WLAN by adopting a new quadrature generation circuit. Therefore, the designed QVCO can be used for a multi-standard direct conversion receiver
Keywords :
CMOS integrated circuits; MMIC oscillators; UHF integrated circuits; code division multiple access; phase noise; wireless LAN; 1.94 to 3 GHz; 4.9 to 6 GHz; CMOS LC QVCO; LC tank; WCDMA; direct conversion receiver; dual-band WLAN; multistandard applications; phase noise requirements; quadrature generation circuit; quadrature voltage controlled oscillator; Capacitors; Circuit optimization; Inductance; Inductors; Parasitic capacitance; Phase noise; Switches; Varactors; Voltage-controlled oscillators; Wideband;
Conference_Titel :
SOC Conference, 2005. Proceedings. IEEE International
Conference_Location :
Herndon, VA
Print_ISBN :
0-7803-9264-7
DOI :
10.1109/SOCC.2005.1554491
