Title :
A complementary Colpitts VCO implemented with ring inductor
Author :
Jang, ShengLyang ; Chiu, ChunYuan ; Lee, ChienFeng
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
This paper presents a novel differential voltage controlled oscillator (VCO). The VCO uses a closed-loop ring inductor and is composed of two single-ended complementary Colpitts LC VCOs coupled by two identical inductors and is implemented in a standard 0.18 mum CMOS technology. This differential VCO operates at 5.76-6.76 GHz. The measured phase noise of the VCO operating at 6.7 GHz is -118.5 dBc/Hz at 1-MHz offset while the VCO draws 3.75 mA and 5.625 mW consumption from a supply voltage of 1.5 V.
Keywords :
CMOS integrated circuits; inductors; voltage-controlled oscillators; CMOS technology; closed-loop ring inductor; complementary Colpitts VCO; current 3.75 mA; differential VCO; differential voltage controlled oscillator; phase noise; power 5.625 mW; single-ended complementary Colpitts LC VCO; size 0.18 mum; CMOS technology; Capacitance; Circuit topology; Equivalent circuits; Inductors; Inverters; Phase noise; Transconductance; Voltage; Voltage-controlled oscillators; CMOS; Complementary Colpitts voltage-controlled oscillators; ring inductor;
Conference_Titel :
VLSI Design, Automation and Test, 2008. VLSI-DAT 2008. IEEE International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4244-1616-5
Electronic_ISBN :
978-1-4244-1617-2
DOI :
10.1109/VDAT.2008.4542428
