A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique

Yan-Ru TSENG; Tzuen-Hsi HUANG; Shang-Hsun WU

doi:10.1587/transele.E94.C.648

A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique

Yan-Ru TSENG, Tzuen-Hsi HUANG, Shang-Hsun WU

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This paper presents a 7 GHz differential current-reused voltage-controlled oscillator (CR-VCO) with low power consumption and low phase noise using 0.18-µm CMOS technology. The output power of this CR-VCO is enhanced by utilizing a trifilar-transformer-feedback technique. The lower phase noise is achieved by the more symmetric voltage swings resulting from the improved balance of switching current. At a 1.5-V DC supply voltage, the power dissipation is only 3.4 mW. The total tuning range is 1.4 GHz (17.9%) as the tuning voltage ranges from 0 V to 1.8 V. The optimum phase noise is around -117.3 dBc/Hz at a frequency offset of 1 MHz from the center frequency of 7.07 GHz. The corresponding output power is around -6.8 dBm. For the proposed CR-VCO, the calculated figures-of-merit, FOM and FOM_T , are -188.9 and -193.9 dBc/Hz, respectively.

Publication: IEICE TRANSACTIONS on Electronics Vol.E94-C No.4 pp.648-653

Publication Date: 2011/04/01

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Online ISSN: 1745-1353

DOI: 10.1587/transele.E94.C.648

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

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Yan-Ru TSENG, Tzuen-Hsi HUANG, Shang-Hsun WU, "A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique" in IEICE TRANSACTIONS on Electronics, vol. E94-C, no. 4, pp. 648-653, April 2011, doi: 10.1587/transele.E94.C.648.
Abstract: This paper presents a 7 GHz differential current-reused voltage-controlled oscillator (CR-VCO) with low power consumption and low phase noise using 0.18-µm CMOS technology. The output power of this CR-VCO is enhanced by utilizing a trifilar-transformer-feedback technique. The lower phase noise is achieved by the more symmetric voltage swings resulting from the improved balance of switching current. At a 1.5-V DC supply voltage, the power dissipation is only 3.4 mW. The total tuning range is 1.4 GHz (17.9%) as the tuning voltage ranges from 0 V to 1.8 V. The optimum phase noise is around -117.3 dBc/Hz at a frequency offset of 1 MHz from the center frequency of 7.07 GHz. The corresponding output power is around -6.8 dBm. For the proposed CR-VCO, the calculated figures-of-merit, FOM and FOM_T , are -188.9 and -193.9 dBc/Hz, respectively.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E94.C.648/_p

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@ARTICLE{e94-c_4_648,
author={Yan-Ru TSENG, Tzuen-Hsi HUANG, Shang-Hsun WU, },
journal={IEICE TRANSACTIONS on Electronics},
title={A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique},
year={2011},
volume={E94-C},
number={4},
pages={648-653},
abstract={This paper presents a 7 GHz differential current-reused voltage-controlled oscillator (CR-VCO) with low power consumption and low phase noise using 0.18-µm CMOS technology. The output power of this CR-VCO is enhanced by utilizing a trifilar-transformer-feedback technique. The lower phase noise is achieved by the more symmetric voltage swings resulting from the improved balance of switching current. At a 1.5-V DC supply voltage, the power dissipation is only 3.4 mW. The total tuning range is 1.4 GHz (17.9%) as the tuning voltage ranges from 0 V to 1.8 V. The optimum phase noise is around -117.3 dBc/Hz at a frequency offset of 1 MHz from the center frequency of 7.07 GHz. The corresponding output power is around -6.8 dBm. For the proposed CR-VCO, the calculated figures-of-merit, FOM and FOM_T , are -188.9 and -193.9 dBc/Hz, respectively.},
keywords={},
doi={10.1587/transele.E94.C.648},
ISSN={1745-1353},
month={April},}

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TY - JOUR
TI - A 7-GHz, Low-Power, Low Phase-Noise Differential Current-Reused VCO Utilizing a Trifilar-Transformer-Feedback Technique
T2 - IEICE TRANSACTIONS on Electronics
SP - 648
EP - 653
AU - Yan-Ru TSENG
AU - Tzuen-Hsi HUANG
AU - Shang-Hsun WU
PY - 2011
DO - 10.1587/transele.E94.C.648
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E94-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2011
AB - This paper presents a 7 GHz differential current-reused voltage-controlled oscillator (CR-VCO) with low power consumption and low phase noise using 0.18-µm CMOS technology. The output power of this CR-VCO is enhanced by utilizing a trifilar-transformer-feedback technique. The lower phase noise is achieved by the more symmetric voltage swings resulting from the improved balance of switching current. At a 1.5-V DC supply voltage, the power dissipation is only 3.4 mW. The total tuning range is 1.4 GHz (17.9%) as the tuning voltage ranges from 0 V to 1.8 V. The optimum phase noise is around -117.3 dBc/Hz at a frequency offset of 1 MHz from the center frequency of 7.07 GHz. The corresponding output power is around -6.8 dBm. For the proposed CR-VCO, the calculated figures-of-merit, FOM and FOM_T , are -188.9 and -193.9 dBc/Hz, respectively.
ER -