Title :
A 300-MHz CMOS voltage-controlled ring oscillator
Author :
Enam, S.K. ; Abidi, Asad A.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
2/1/1990 12:00:00 AM
Abstract :
A voltage-controlled ring oscillator based on feedback derived from a weighted sum of two phases of an oscillation is described. A prototype fabricated in 1-μm CMOS attains a maximum frequency of 320 MHz, with a controllable frequency range of 100 MHz. An almost sinusoidal waveform appears at the output across this range of frequencies
Keywords :
CMOS integrated circuits; feedback; radiofrequency oscillators; variable-frequency oscillators; 1 micron; 320 MHz; CMOS; VCO; VFO; feedback; sinusoidal waveform; voltage-controlled ring oscillator; Circuits; Clocks; Delay; Feedback; Frequency; Inverters; MOS devices; Ring oscillators; Voltage; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
