Title :
A low-voltage 6-GHz-band CMOS monolithic LC-tank VCO using a tuning-range switching technique
Author :
Yamagishi, A. ; Tsukahara, T. ; Harada, M. ; Kodate, J.
Author_Institution :
NTT Telecommun. Energy Labs., Atsugi, Japan
Abstract :
A low-voltage 6-GHz-band monolithic LC-tank VCO has been fabricated using 0.2-/spl mu/m CMOS/SIMOX process technology. The VCO features a tuning-range switching technique to achieve a wide tuning range. The output frequency range is between 5.71 and 6.21 GHz owing to the tuning-range switch. With the tuning-range switch on or off, the phase noise is about -100 dBc/Hz at 1-MHz offset and about -120 dBc/Hz at 10-MHz offset frequency at the supply voltage of 2 V, and the VCO can oscillate at over 6.0 GHz with 1.1-V supply voltage. In that case, the phase noise is also about -100 dBc/Hz at 1 MHz offset. The dissipation current of the VCO core is 21.4 mA at 2.0-V supply voltage and 7.4 mA at 1.1-V supply voltage.
Keywords :
CMOS analogue integrated circuits; SIMOX; circuit tuning; low-power electronics; voltage-controlled oscillators; 0.2 micron; 1.1 V; 2 V; 6 GHz; CMOS/SIMOX process technology; current dissipation; low-voltage monolithic LC-tank VCO; phase noise; tuning range switching; CMOS process; CMOS technology; Frequency; MOSFETs; Switches; Switching circuits; Tuning; Varactors; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.863287
