The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Dans cet article, nous présentons une étude sur l'optimisation de la conception d'oscillateurs commandés en tension. Le bruit de phase des oscillateurs de type LC est essentiellement limité par le facteur de qualité des inductances. Il a été démontré expérimentalement que des inductances à Q plus élevé peuvent être obtenues à des fréquences plus élevées tandis que la fréquence d'oscillation est limitée par des capacités parasites. Dans cet article, la taille minimale du transistor et la dégradation du facteur de qualité provoquée par un réseau de condensateurs commutés sont estimées analytiquement, et la fréquence d'oscillation maximale des VCO est également dérivée d'un circuit équivalent en considérant les capacités parasites. Selon l'évaluation analytique, le bruit de phase d'un VCO utilisant un CMOS à 65 nm est meilleur de 2 dB que celui d'un CMOS à 180 nm.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copier
Rui MURAKAMI, Shoichi HARA, Kenichi OKADA, Akira MATSUZAWA, "Analysis of Phase Noise Degradation Considering Switch Transistor Capacitances for CMOS Voltage Controlled Oscillators" in IEICE TRANSACTIONS on Electronics,
vol. E93-C, no. 6, pp. 777-784, June 2010, doi: 10.1587/transele.E93.C.777.
Abstract: In this paper we present a study on the design optimization of voltage-controlled oscillators. The phase noise of LC-type oscillators is basically limited by the quality factor of inductors. It has been experimentally shown that higher-Q inductors can be achieved at higher frequencies while the oscillation frequency is limited by parasitic capacitances. In this paper, the minimum transistor size and the degradation of the quality factor caused by a switched-capacitor array are analytically estimated, and the maximum oscillation frequency of VCOs is also derived from an equivalent circuit by considering parasitic capacitances. According to the analytical evaluation, the phase noise of a VCO using a 65 nm CMOS is 2 dB better than that of a 180 nm CMOS.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E93.C.777/_p
Copier
@ARTICLE{e93-c_6_777,
author={Rui MURAKAMI, Shoichi HARA, Kenichi OKADA, Akira MATSUZAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Analysis of Phase Noise Degradation Considering Switch Transistor Capacitances for CMOS Voltage Controlled Oscillators},
year={2010},
volume={E93-C},
number={6},
pages={777-784},
abstract={In this paper we present a study on the design optimization of voltage-controlled oscillators. The phase noise of LC-type oscillators is basically limited by the quality factor of inductors. It has been experimentally shown that higher-Q inductors can be achieved at higher frequencies while the oscillation frequency is limited by parasitic capacitances. In this paper, the minimum transistor size and the degradation of the quality factor caused by a switched-capacitor array are analytically estimated, and the maximum oscillation frequency of VCOs is also derived from an equivalent circuit by considering parasitic capacitances. According to the analytical evaluation, the phase noise of a VCO using a 65 nm CMOS is 2 dB better than that of a 180 nm CMOS.},
keywords={},
doi={10.1587/transele.E93.C.777},
ISSN={1745-1353},
month={June},}
Copier
TY - JOUR
TI - Analysis of Phase Noise Degradation Considering Switch Transistor Capacitances for CMOS Voltage Controlled Oscillators
T2 - IEICE TRANSACTIONS on Electronics
SP - 777
EP - 784
AU - Rui MURAKAMI
AU - Shoichi HARA
AU - Kenichi OKADA
AU - Akira MATSUZAWA
PY - 2010
DO - 10.1587/transele.E93.C.777
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E93-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2010
AB - In this paper we present a study on the design optimization of voltage-controlled oscillators. The phase noise of LC-type oscillators is basically limited by the quality factor of inductors. It has been experimentally shown that higher-Q inductors can be achieved at higher frequencies while the oscillation frequency is limited by parasitic capacitances. In this paper, the minimum transistor size and the degradation of the quality factor caused by a switched-capacitor array are analytically estimated, and the maximum oscillation frequency of VCOs is also derived from an equivalent circuit by considering parasitic capacitances. According to the analytical evaluation, the phase noise of a VCO using a 65 nm CMOS is 2 dB better than that of a 180 nm CMOS.
ER -