Title :
A CMOS 1.8 GHz low-phase-noise voltage-controlled oscillator with prescaler
Author :
Craninckx, J. ; Steyaert, M.
Author_Institution :
ESAT-MICAS, Katholieke Univ., Leuven, Belgium
Abstract :
The two HF components for a full CMOS 1.8 GHz frequency synthesizing PLL, the VCO and prescaler, are realized. The low-phase-noise oscillator employs bondwires for the high-quality on-chip inductor. A special LC tank design enables an even further reduction of the phase noise. The prescaler uses an enhanced ECL-like CMOS D-flipflop and has a fixed division ratio of 128. The VCO and prescaler are integrated in a standard 0.7 /spl mu/m CMOS process.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; frequency synthesizers; integrated circuit noise; mixed analogue-digital integrated circuits; phase locked loops; phase noise; prescalers; variable-frequency oscillators; voltage-controlled oscillators; 0.7 micron; 1.8 GHz; CMOS D-flipflop; CMOS process; D-type flip-flop; LC tank design; UHF IC; low-phase-noise VCO; onchip inductor; phase noise reduction; prescaler; voltage-controlled oscillator; Bonding; Capacitance; Capacitors; Circuits; Frequency synthesizers; Inductance; Inductors; Phase locked loops; Phase noise; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 1995. Digest of Technical Papers. 41st ISSCC, 1995 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-2495-1
DOI :
10.1109/ISSCC.1995.535550
