Title :
A 0.5-V 3.6/5.2 GHz CMOS multi-band LC VCO for ultra low-voltage wireless applications
Author :
Catli, Burak ; Hella, Mona M.
Author_Institution :
Syst. Eng. Dept., Rensselaer Polytech. Inst., Troy, NY
Abstract :
In this paper, an ultra low-voltage multiband CMOS VCO based on tunable band-limited negative resistance approach is presented. The proposed technique eliminates the need for switching elements that are connected directly to the tank and limit the tuning range and phase noise performance. The oscillator draws a current of 6 mA from 0.5 V supply with a phase noise of -117 dBc/Hz at 1 MHz offset from 3.6 GHz carrier. For the high frequency band, it draws 4 mA from the same supply with a phase noise of -117 dBc/Hz at 1 MHz offset from 5.2 GHz.
Keywords :
CMOS integrated circuits; circuit tuning; integrated circuit design; integrated circuit noise; low-power electronics; negative resistance circuits; phase noise; voltage-controlled oscillators; CMOS multiband LC VCO; current 4 mA; current 6 mA; frequency 3.6 GHz; frequency 5.2 GHz; phase noise; tunable band-limited negative resistance method; ultralow-voltage wireless application; voltage 0.5 V; voltage controlled oscillator; Phase noise; Radio frequency; Radiofrequency integrated circuits; Resonance; Resonant frequency; Signal generators; Signal processing; Switches; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541588
