Quadrature Relaxation Oscillator with FoM of -165 dBc/Hz

Eduardo Ortigueira; Taimur Rabuske; Luís Augusto Bica Gomes de Oliveira; Jorge R. Fernandes; Manuel de Medeiros Silva

doi:10.1109/ISCAS.2014.6865399

Quadrature Relaxation Oscillator with FoM of -165 dBc/Hz

Eduardo Ortigueira, Taimur Rabuske, Luís Augusto Bica Gomes de Oliveira, Jorge R. Fernandes, Manuel de Medeiros Silva

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

RC oscillators have lower cost and higher tuning range than LC oscillators. However, their phase noise performance is poor and in the case of the relaxation oscillator it is also far from the theoretical optimum. In this paper we present a new circuit of a quadrature relaxation oscillator with faster switching and high amplitude output signal to improve the FoM. The sizing of a prototype in a 130nm CMOS technology was done using a genetic algorithm tool. Simulation results show that the quadrature oscillator operating at 2.4 GHz achieves a figure of merit of -165 dBc/Hz.

Original language	English
Title of host publication	Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
Pages	1372-1375
DOIs	https://doi.org/10.1109/ISCAS.2014.6865399
Publication status	Published - 1 Jan 2014
Event	IEEE Int. Symp. Circuits and Systems (ISCAS’14) - Duration: 1 Jan 2014 → …

Conference

Conference	IEEE Int. Symp. Circuits and Systems (ISCAS’14)
Period	1/01/14 → …

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10.1109/ISCAS.2014.6865399

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title = "Quadrature Relaxation Oscillator with FoM of -165 dBc/Hz",

abstract = "RC oscillators have lower cost and higher tuning range than LC oscillators. However, their phase noise performance is poor and in the case of the relaxation oscillator it is also far from the theoretical optimum. In this paper we present a new circuit of a quadrature relaxation oscillator with faster switching and high amplitude output signal to improve the FoM. The sizing of a prototype in a 130nm CMOS technology was done using a genetic algorithm tool. Simulation results show that the quadrature oscillator operating at 2.4 GHz achieves a figure of merit of -165 dBc/Hz.",

author = "Eduardo Ortigueira and Taimur Rabuske and Oliveira, {Lu{\'i}s Augusto Bica Gomes de} and Fernandes, {Jorge R.} and Silva, {Manuel de Medeiros}",

note = "This work was supported by national funds through FCT, Fundacao para a Ciencia e a Tecnologia, under project PEst-OE/EEI/LA0021/2013, PTDC/CTMNAN/112672/2009 (SCOMagNO) and Phd Grant SFRH/BD/84507/2012.; IEEE Int. Symp. Circuits and Systems (ISCAS{\textquoteright}14) ; Conference date: 01-01-2014",

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doi = "10.1109/ISCAS.2014.6865399",

language = "English",

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AU - Ortigueira, Eduardo

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AU - Oliveira, Luís Augusto Bica Gomes de

AU - Fernandes, Jorge R.

AU - Silva, Manuel de Medeiros

N1 - This work was supported by national funds through FCT, Fundacao para a Ciencia e a Tecnologia, under project PEst-OE/EEI/LA0021/2013, PTDC/CTMNAN/112672/2009 (SCOMagNO) and Phd Grant SFRH/BD/84507/2012.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - RC oscillators have lower cost and higher tuning range than LC oscillators. However, their phase noise performance is poor and in the case of the relaxation oscillator it is also far from the theoretical optimum. In this paper we present a new circuit of a quadrature relaxation oscillator with faster switching and high amplitude output signal to improve the FoM. The sizing of a prototype in a 130nm CMOS technology was done using a genetic algorithm tool. Simulation results show that the quadrature oscillator operating at 2.4 GHz achieves a figure of merit of -165 dBc/Hz.

AB - RC oscillators have lower cost and higher tuning range than LC oscillators. However, their phase noise performance is poor and in the case of the relaxation oscillator it is also far from the theoretical optimum. In this paper we present a new circuit of a quadrature relaxation oscillator with faster switching and high amplitude output signal to improve the FoM. The sizing of a prototype in a 130nm CMOS technology was done using a genetic algorithm tool. Simulation results show that the quadrature oscillator operating at 2.4 GHz achieves a figure of merit of -165 dBc/Hz.

U2 - 10.1109/ISCAS.2014.6865399

DO - 10.1109/ISCAS.2014.6865399

M3 - Conference contribution

SN - 978-1-4799-3432-4

SP - 1372

EP - 1375

BT - Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

T2 - IEEE Int. Symp. Circuits and Systems (ISCAS’14)

Y2 - 1 January 2014

ER -

Quadrature Relaxation Oscillator with FoM of -165 dBc/Hz

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