Title :
A low phase noise Colpitts VCO for Ku-band applications
Author :
Wang, Yi ; Leenaerts, D. ; van der Heijden, E. ; Mahmoudi, R.
Author_Institution :
Mixed-Signal Microelectron. Group, Eindhoven Univ. of Technol., Eindhoven, Netherlands
fDate :
Sept. 30 2012-Oct. 3 2012
Abstract :
A 12.74 GHz low phase noise Colpitts VCO has been designed and fabricated in a 0.25μm SiGe:C BiCMOS technology. The balanced VCO uses a transformer coupled tank and two additional inductors to reduce the current in the feedback loop. The efficiency of energy transfer from active devices to the tank has been improved by these two methods, which leads to a larger output swing for the same DC current. Measured phase noise is better than -100dBc /Hz at 100 kHz offset over the tuning range from 12.43 to 13.08GHz.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; MMIC oscillators; carbon; field effect MMIC; inductors; transformers; voltage-controlled oscillators; BiCMOS technology; DC current; Ku-band applications; SiGe:C; active devices; balanced VCO; energy transfer efficiency; feedback loop; frequency 12.43 GHz to 13.08 GHz; inductors; low phase noise Colpitts VCO; size 0.25 mum; transformer coupled tank; Feedback loop; Inductors; Noise measurement; Phase noise; Tuning; Voltage-controlled oscillators; C BiCMOS technology; Colpitts VCO; Ku-band; SiGe; phase noise;
Conference_Titel :
Bipolar/BiCMOS Circuits and Technology Meeting (BCTM), 2012 IEEE
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4673-3020-6
DOI :
10.1109/BCTM.2012.6352655
