Title :
Colpitts VCOs for low-phase noise and low-power applications with transformer-coupled tank
Author :
van der Heijden, E. ; Farrugia, A. ; Breunisse, R. ; Vaucher, C.S. ; Pijper, R.
Author_Institution :
NXP Semicond. Res., Eindhoven
fDate :
June 17 2008-April 17 2008
Abstract :
This paper presents two 17 GHz transformer-coupled tank VCOs, implemented in a 0.25 mum SiGe:C BiCMOS technology. The VCOs have different impedance-levels of the LC-tank and the active circuit, showing a trade-off between low phase noise and low power. The VCOs include a 2.7 V supply regulator and the VCO cores dissipate 11 and 4.5 mA respectively from this 2.7 V supply. The measured tuning range for both VCOs is from 16.8 to 17.6 GHz and the phase noise is <-90 dBc/Hz at 100 kHz from the carrier for the complete tuning range.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; microwave oscillators; semiconductor devices; transformers; BiCMOS technology; Colpitts VCO; SiGe; frequency 16.8 GHz to 17.6 GHz; low-phase noise; low-power applications; phase noise; transformer-coupled tank; voltage 2.7 V; Active circuits; BiCMOS integrated circuits; Circuit noise; Impedance; Noise measurement; Phase measurement; Phase noise; Regulators; Transformer cores; Voltage-controlled oscillators; Colpitts; microwave circuits; satellite; transformers; voltage controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2008. RFIC 2008. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1808-4
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2008.4561522
