Title :
CMOS 5-10 GHz oscillators for low voltage RF applications
Author :
Mostafa, Ahmed H. ; El-Gamal, Mourad N. ; Rafla, Ramez A.
Author_Institution :
Microelectron. & Comput. Syst. Lab., McGill Univ., Montreal, Que., Canada
Abstract :
This paper presents the design and experimental measurements of three CMOS LC-based oscillators. The first circuit is optimized for low voltage operation in a 0.25 μm process, requiring only a 0.85 V power supply and reaching a maximum frequency, of 4 GHz. The second circuit is a 5 GHz oscillator in a 0.35 μm process operating from a 1.5 V power supply and optimized for a wide tuning range (10%) while maintaining reasonable phase noise (-87.3 dBc/Hz at 100 kHz offset). Finally, the third oscillator targeted high frequency operation reaching a maximum oscillating frequency of 10.5 GHz in a 0.35 μm process. The oscillators make use of on-chip components only, allowing for simple and robust integration
Keywords :
CMOS analogue integrated circuits; MMIC oscillators; circuit optimisation; circuit tuning; field effect MMIC; integrated circuit design; low-power electronics; phase noise; varactors; variable-frequency oscillators; 0.25 micron; 0.35 micron; 0.85 V; 1.5 V; 4 to 10.5 GHz; CMOS oscillators; LC-based oscillators; low voltage RF applications; phase noise; varactors; wide tuning range; CMOS process; CMOS technology; Circuit optimization; Circuit topology; Impedance; Low voltage; Phase noise; Radio frequency; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on
Conference_Location :
Lansing, MI
Print_ISBN :
0-7803-6475-9
DOI :
10.1109/MWSCAS.2000.951687
