A low-voltage differentially tuned current-adjusted 5.5-GHz quadrature VCO in 65-nm CMOS technology

Kytonaki, E-SA; Papananos, Y

dc.contributor.author	Kytonaki, E-SA	en
dc.contributor.author	Papananos, Y	en
dc.date.accessioned	2014-03-01T01:34:54Z
dc.date.available	2014-03-01T01:34:54Z
dc.date.issued	2011	en
dc.identifier.issn	1549-7747	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20927
dc.subject	CMOS technology	en
dc.subject	integrated circuits	en
dc.subject	LC voltage-controlled oscillator (VCO)	en
dc.subject	low voltage	en
dc.subject	phase noise	en
dc.subject	quadrature signals	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	CMOS technology	en
dc.subject.other	Complimentary metal oxide semiconductors	en
dc.subject.other	Die area	en
dc.subject.other	Differentially-tuned	en
dc.subject.other	Direct current	en
dc.subject.other	Fine tuning	en
dc.subject.other	Fully integrated	en
dc.subject.other	Low intermediate frequencies	en
dc.subject.other	Low voltages	en
dc.subject.other	Low-phase-noise	en
dc.subject.other	Low-voltage	en
dc.subject.other	Quadrature outputs	en
dc.subject.other	Quadrature signal	en
dc.subject.other	Quadrature VCO	en
dc.subject.other	Radio frequencies	en
dc.subject.other	Switching capacitors	en
dc.subject.other	Voltage controlled oscillator	en
dc.subject.other	Voltage supply	en
dc.subject.other	Wide tuning range	en
dc.subject.other	CMOS integrated circuits	en
dc.subject.other	Information technology	en
dc.subject.other	Phase noise	en
dc.subject.other	Tuning	en
dc.subject.other	Variable frequency oscillators	en
dc.title	A low-voltage differentially tuned current-adjusted 5.5-GHz quadrature VCO in 65-nm CMOS technology	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TCSII.2011.2149010	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TCSII.2011.2149010	en
heal.identifier.secondary	5783901	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	A low-voltage low-phase-noise 5.5-GHz differential LC voltage-controlled oscillator (VCO) with quadrature outputs for direct and low intermediate frequency conversion is presented. The circuit is fully integrated in IBM's 65-nm radio-frequency complimentary metal-oxide-semiconductor process. Care has to be taken in achieving low phase noise, whereas the VCO core is powered from a low-voltage supply of 650 mV. The VCO incorporates a digitally controlled technique in order for the direct current to be adjusted in each oscillation band. Switching capacitors are adopted to enable the selection of the oscillating band, whereas differentially controlled varactors are used for fine tuning the circuit. Quadrature outputs are provided by two identical oscillators appropriately coupled. The oscillator has a wide tuning range, i.e., between 4.6 and 6.2 GHz (29%). The quadrature VCO core dissipates 8.71 mW from a voltage supply of 0.65 V, whereas its phase noise is ;-113 dBc/Hz at 1-MHz offset of a 5.5-GHz carrier. The whole circuit occupies 0.33 mm2 of die area. © 2011 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Circuits and Systems II: Express Briefs	en
dc.identifier.doi	10.1109/TCSII.2011.2149010	en
dc.identifier.isi	ISI:000291428900002	en
dc.identifier.volume	58	en
dc.identifier.issue	5	en
dc.identifier.spage	254	en
dc.identifier.epage	258	en