Title :
A novel low phase noise 1.8V 900MHz CMOS voltage controlled ring oscillator
Author :
Badillo, Dean A. ; Kiaei, Sayfe
Author_Institution :
Semicond. Product Sector, Motorola Inc., Tempe, AZ, USA
Abstract :
A 900MHz CMOS voltage controlled ring oscillator with quadrature output is presented. The circuit is designed in a 0.18μm CMOS process and operates on a 1.8V supply. The VCO has a tuning range of 475MHz to 1.0GHz. At 900MHz the VCO has a phase noise of -109dBc/Hz at a frequency offset of 600kHz. The average power consumed at 900MHz is 19.2mW.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; phase noise; voltage-controlled oscillators; 0.18 micron; 1.8 V; 19.2 mW; 475 MHz to 1.0 GHz; 900 MHz; CMOS; frequency offset; phase noise; quadrature output; ring oscillator; tuning range; voltage controlled ring oscillator; Circuit noise; Circuit optimization; Frequency; Inverters; Negative feedback; Phase noise; Ring oscillators; Tuning; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1204980
