A low-phase-noise wide-band CMOS quadrature VCO for multi-standard RF front-ends

Ali Fard; Pietro Andreani

doi:10.1109/RFIC.2005.1489868

A low-phase-noise wide-band CMOS quadrature VCO for multi-standard RF front-ends

Ali Fard, Pietro Andreani

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

Abstract

A low phase noise CMOS LC quadrature VCO (QVCO) with a wide frequency range of 3.6-5.6 GHz, designed in a standard 0.18 μm process for multi-standard front-ends, is presented. A significant advantage of the topology is the larger oscillation amplitude when compared to other conventional QVCO structures. The QVCO is compared to a double cross-coupled LC-tank differential oscillator, both in theory and experiments, for evaluation of its phase noise, providing a good insight into its performance. The measured data displays up to 2 dBc/Hz lower phase noise in the 1/f2 region for the QVCO, when consuming twice the current of the differential VCO, based on an identical LC-tank. Experimental results on the QVCO show a phase noise level of -127.5 dBc/Hz at 3 MHz offset from a 5.6 GHz carrier while dissipating 8 mA of current, resulting in a figure of merit of 181.3 dBc/Hz.

Original language	English
Title of host publication	5th IEEE Radio Frequency Integrated Circuits (RFIC) Symposium
Publisher	IEEE
Publication date	2005
Pages	539-542
ISBN (Print)	0-7803-8983-2
DOIs	https://doi.org/10.1109/RFIC.2005.1489868
Publication status	Published - 2005
Event	2005 IEEE 5th Radio Frequency Integrated Circuits Symposium - Long Beach, United States Duration: 12 Jun 2005 → 14 Jun 2005 Conference number: 5 https://ieeexplore.ieee.org/xpl/conhome/9955/proceeding

Conference

Conference	2005 IEEE 5th Radio Frequency Integrated Circuits Symposium
Number	5
Country/Territory	United States
City	Long Beach
Period	12/06/2005 → 14/06/2005
Internet address	https://ieeexplore.ieee.org/xpl/conhome/9955/proceeding

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10.1109/RFIC.2005.1489868

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title = "A low-phase-noise wide-band CMOS quadrature VCO for multi-standard RF front-ends",

abstract = "A low phase noise CMOS LC quadrature VCO (QVCO) with a wide frequency range of 3.6-5.6 GHz, designed in a standard 0.18 μm process for multi-standard front-ends, is presented. A significant advantage of the topology is the larger oscillation amplitude when compared to other conventional QVCO structures. The QVCO is compared to a double cross-coupled LC-tank differential oscillator, both in theory and experiments, for evaluation of its phase noise, providing a good insight into its performance. The measured data displays up to 2 dBc/Hz lower phase noise in the 1/f2 region for the QVCO, when consuming twice the current of the differential VCO, based on an identical LC-tank. Experimental results on the QVCO show a phase noise level of -127.5 dBc/Hz at 3 MHz offset from a 5.6 GHz carrier while dissipating 8 mA of current, resulting in a figure of merit of 181.3 dBc/Hz.",

author = "Ali Fard and Pietro Andreani",

year = "2005",

doi = "10.1109/RFIC.2005.1489868",

language = "English",

isbn = "0-7803-8983-2",

pages = "539--542",

booktitle = "5th IEEE Radio Frequency Integrated Circuits (RFIC) Symposium",

publisher = "IEEE",

address = "United States",

note = "2005 IEEE 5th Radio Frequency Integrated Circuits Symposium, RFIC 2005 ; Conference date: 12-06-2005 Through 14-06-2005",

url = "https://ieeexplore.ieee.org/xpl/conhome/9955/proceeding",

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AU - Fard, Ali

AU - Andreani, Pietro

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PY - 2005

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N2 - A low phase noise CMOS LC quadrature VCO (QVCO) with a wide frequency range of 3.6-5.6 GHz, designed in a standard 0.18 μm process for multi-standard front-ends, is presented. A significant advantage of the topology is the larger oscillation amplitude when compared to other conventional QVCO structures. The QVCO is compared to a double cross-coupled LC-tank differential oscillator, both in theory and experiments, for evaluation of its phase noise, providing a good insight into its performance. The measured data displays up to 2 dBc/Hz lower phase noise in the 1/f2 region for the QVCO, when consuming twice the current of the differential VCO, based on an identical LC-tank. Experimental results on the QVCO show a phase noise level of -127.5 dBc/Hz at 3 MHz offset from a 5.6 GHz carrier while dissipating 8 mA of current, resulting in a figure of merit of 181.3 dBc/Hz.

AB - A low phase noise CMOS LC quadrature VCO (QVCO) with a wide frequency range of 3.6-5.6 GHz, designed in a standard 0.18 μm process for multi-standard front-ends, is presented. A significant advantage of the topology is the larger oscillation amplitude when compared to other conventional QVCO structures. The QVCO is compared to a double cross-coupled LC-tank differential oscillator, both in theory and experiments, for evaluation of its phase noise, providing a good insight into its performance. The measured data displays up to 2 dBc/Hz lower phase noise in the 1/f2 region for the QVCO, when consuming twice the current of the differential VCO, based on an identical LC-tank. Experimental results on the QVCO show a phase noise level of -127.5 dBc/Hz at 3 MHz offset from a 5.6 GHz carrier while dissipating 8 mA of current, resulting in a figure of merit of 181.3 dBc/Hz.

U2 - 10.1109/RFIC.2005.1489868

DO - 10.1109/RFIC.2005.1489868

M3 - Article in proceedings

SN - 0-7803-8983-2

SP - 539

EP - 542

BT - 5th IEEE Radio Frequency Integrated Circuits (RFIC) Symposium

PB - IEEE

T2 - 2005 IEEE 5th Radio Frequency Integrated Circuits Symposium

Y2 - 12 June 2005 through 14 June 2005

ER -

A low-phase-noise wide-band CMOS quadrature VCO for multi-standard RF front-ends

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