Title :
A comparison between two 1.8GHz CMOS VCOs tuned by different varactors
Author :
Andreani, Pietro
Author_Institution :
Lund University, Lund, Sweden
Abstract :
Two 1.8GHz CMOS VCOs, based on a diode-varicap and an MOS-varicap, respectively, have been designed in a 0.8µm digital CMOS process and tested. Although the tuning range is larger for the MOS-varicap VCO, the overall performance of the diode-varicap VCO is superior to that of the MOS-varicap VCO. The comparison might give a different result by adopting a CMOS process that allows for shorter minimum transistor gate lengths.
Keywords :
CMOS process; Diodes; Electronic equipment testing; Inductance; MOSFETs; Parasitic capacitance; Spirals; Varactors; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 1998. ESSCIRC '98. Proceedings of the 24th European
DOI :
10.1109/ESSCIR.1998.186288
