Title :
A 1.4-GHz 3-mW CMOS LC low phase noise VCO using tapped bond wire inductances
Author :
Ahrens, Tamara I. ; Lee, Thomas H.
Author_Institution :
Stanford Univ., CA, USA
Abstract :
A 1.4-GHz LC voltage-controlled oscillator has been implemented in a MOSIS 0.5-/spl mu/m CMOS process. Complementary cross-coupled PMOS and NMOS transistors enhance single-ended symmetry at each of the resonant nodes, reducing close-in phase noise. Tapped bond wires provide a resonant tank with high Q. At an offset frequency of 100 kHz, the measured phase noise is -10/sup 7/ dBc/Hz with 3 mW power dissipation from a 3.0 V supply. NMOS gate capacitors achieve a 17% tuning range.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; circuit resonance; circuit tuning; inductance; integrated circuit noise; phase noise; voltage-controlled oscillators; 0.5 micron; 1.4 GHz; 3 mW; 3.0 V; CMOS LC VCO; MOSIS; NMOS gate capacitors; complementary cross-coupled transistors; offset frequency; phase noise; power dissipation; resonant nodes; resonant tank; single-ended symmetry; tapped bond wire inductances; tuning range;
Conference_Titel :
Low Power Electronics and Design, 1998. Proceedings. 1998 International Symposium on
Conference_Location :
Monterey, CA, USA
Print_ISBN :
1-58113-059-7
