IEICE TRANSACTIONS on Electronics
Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator
Summary :
High phase noise is a common problem in ring oscillators. Continuous conduction of the transistor in an analog tuning method degrades the phase noise of ring oscillators. In this paper, a digital control tuning which completely switches the transistors on and off, and a 1/f noise reduction technique are employed to reduce the phase noise. A 14-bit control signal is employed to obtain a small frequency step and a wide tuning range. Furthermore, multiphase ring oscillator with a sub-feedback loop topology is used to obtain a stable quadrature outputs with even number of stages and to increase the output frequency. The measured DCO has a frequency tuning range from 554 MHz to 2.405 GHz. The power dissipation is 112 mW from 1.8 V power supply. The phase noise at 4 MHz offset and 2.4 GHz center frequency is -134.82 dBc/Hz. The FoM is -169.9 dBc/Hz which is a 6.3 dB improvement over the previous oscillator design.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E96-C No.2 pp.262-269
- Publication Date
- 2013/02/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E96.C.262
- Type of Manuscript
- PAPER
- Category
- Microwaves, Millimeter-Waves
Authors
Keyword
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Ramesh K. POKHAREL, Prapto NUGROHO, Awinash ANAND, Abhishek TOMAR, Haruichi KANAYA, Keiji YOSHIDA, "Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator" in IEICE TRANSACTIONS on Electronics,
vol. E96-C, no. 2, pp. 262-269, February 2013, doi: 10.1587/transele.E96.C.262.
Abstract: High phase noise is a common problem in ring oscillators. Continuous conduction of the transistor in an analog tuning method degrades the phase noise of ring oscillators. In this paper, a digital control tuning which completely switches the transistors on and off, and a 1/f noise reduction technique are employed to reduce the phase noise. A 14-bit control signal is employed to obtain a small frequency step and a wide tuning range. Furthermore, multiphase ring oscillator with a sub-feedback loop topology is used to obtain a stable quadrature outputs with even number of stages and to increase the output frequency. The measured DCO has a frequency tuning range from 554 MHz to 2.405 GHz. The power dissipation is 112 mW from 1.8 V power supply. The phase noise at 4 MHz offset and 2.4 GHz center frequency is -134.82 dBc/Hz. The FoM is -169.9 dBc/Hz which is a 6.3 dB improvement over the previous oscillator design.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E96.C.262/_p
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@ARTICLE{e96-c_2_262,
author={Ramesh K. POKHAREL, Prapto NUGROHO, Awinash ANAND, Abhishek TOMAR, Haruichi KANAYA, Keiji YOSHIDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator},
year={2013},
volume={E96-C},
number={2},
pages={262-269},
abstract={High phase noise is a common problem in ring oscillators. Continuous conduction of the transistor in an analog tuning method degrades the phase noise of ring oscillators. In this paper, a digital control tuning which completely switches the transistors on and off, and a 1/f noise reduction technique are employed to reduce the phase noise. A 14-bit control signal is employed to obtain a small frequency step and a wide tuning range. Furthermore, multiphase ring oscillator with a sub-feedback loop topology is used to obtain a stable quadrature outputs with even number of stages and to increase the output frequency. The measured DCO has a frequency tuning range from 554 MHz to 2.405 GHz. The power dissipation is 112 mW from 1.8 V power supply. The phase noise at 4 MHz offset and 2.4 GHz center frequency is -134.82 dBc/Hz. The FoM is -169.9 dBc/Hz which is a 6.3 dB improvement over the previous oscillator design.},
keywords={},
doi={10.1587/transele.E96.C.262},
ISSN={1745-1353},
month={February},}
Copy
TY - JOUR
TI - Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator
T2 - IEICE TRANSACTIONS on Electronics
SP - 262
EP - 269
AU - Ramesh K. POKHAREL
AU - Prapto NUGROHO
AU - Awinash ANAND
AU - Abhishek TOMAR
AU - Haruichi KANAYA
AU - Keiji YOSHIDA
PY - 2013
DO - 10.1587/transele.E96.C.262
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E96-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2013
AB - High phase noise is a common problem in ring oscillators. Continuous conduction of the transistor in an analog tuning method degrades the phase noise of ring oscillators. In this paper, a digital control tuning which completely switches the transistors on and off, and a 1/f noise reduction technique are employed to reduce the phase noise. A 14-bit control signal is employed to obtain a small frequency step and a wide tuning range. Furthermore, multiphase ring oscillator with a sub-feedback loop topology is used to obtain a stable quadrature outputs with even number of stages and to increase the output frequency. The measured DCO has a frequency tuning range from 554 MHz to 2.405 GHz. The power dissipation is 112 mW from 1.8 V power supply. The phase noise at 4 MHz offset and 2.4 GHz center frequency is -134.82 dBc/Hz. The FoM is -169.9 dBc/Hz which is a 6.3 dB improvement over the previous oscillator design.
ER -
English
