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Open Access item On-chip biased voltage-controlled oscillator with temperature compensation of the oscillation amplitude for robust I/Q generation

Authors:Ginés, A. J.
Doldán, R.
Barragán, Manuel J.
Rueda, Adoración
Peralías, E.
Issue Date:2010
Publisher:Institute of Electrical and Electronics Engineers
Citation:Proceedings of 2010 IEEE International Symposium on Circuits and Systems (ISCAS): 1979-1982 (2010)
Abstract:In this work a CMOS 1.2V 5GHz low-power voltage-controlled oscillator (VCO) is proposed. It uses an on-chip biased LC-tank topology and introduces a temperature compensation technique which stabilizes the oscillation amplitude for a robust I/Q generation using a frequency divider-by-2. Compared to a standard design with constant bias, it reduces the oscillation variation by almost two orders of magnitude between 0°C and 100°C with negligible impact on the phase noise. Worst case estimations of the VCO phase noise after layout parasitic extraction are -110.1dBc/Hz and -126.6dBc/Hz at 1MHz and 5MHz offsets from the carrier, respectively. Its nominal current consumption is 198μA (plus 22.5μA for biasing) and it occupies 370×530μm2.
Description:Trabajo presentado al "International Symposium on Circuits and Systems (ISCAS)" celebrado del 30 de Mayo al 2 de Junio del 2010 en Paris (Francia).
Publisher version (URL):http://dx.doi.org/10.1109/ISCAS.2010.5537050
Appears in Collections:(IMS-CNM) Libros y partes de libros

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