IEICE TRANSACTIONS on Electronics
A Wide Band VCO with Automatic Frequency, Gain, and Two-Step Amplitude Calibration Loop for DTV Tuner Application
Summary :
This paper presents a wide tuning range VCO with an automatic frequency, gain, and two-step amplitude calibration loop for Digital TV (DTV) tuner applications. To cover the wide tuning range, the fully digital automatic frequency calibration (AFC) loop is used. In addition to the AFC loop, a two-step negative-Gm tuning loop is proposed to provide the optimum negative-Gm to the LC tank in a wide frequency range with a fine resolution. In the coarse negative-Gm tuning loop, the number of active negative-Gm cells is selected digitally based on the target frequency. In the fine negative-Gm tuning loop, the negative-Gm is tuned finely with the bias voltage of the VCO. Also, the digital VCO gain calibration scheme is proposed to compensate for the gain variation in a wide tuning range. The VCO tuning range is 2.6 GHz, from 1.7 GHz to 4.3 GHz, and the power consumption is 2 mA to 4 mA from a 1.8 V supply. The measured VCO phase noise is -120 dBc/Hz at 1 MHz offset.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E92-C No.12 pp.1496-1503
- Publication Date
- 2009/12/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E92.C.1496
- Type of Manuscript
- PAPER
- Category
- Electronic Circuits
Authors
Keyword
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YoungGun PU, Kang-Yoon LEE, "A Wide Band VCO with Automatic Frequency, Gain, and Two-Step Amplitude Calibration Loop for DTV Tuner Application" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 12, pp. 1496-1503, December 2009, doi: 10.1587/transele.E92.C.1496.
Abstract: This paper presents a wide tuning range VCO with an automatic frequency, gain, and two-step amplitude calibration loop for Digital TV (DTV) tuner applications. To cover the wide tuning range, the fully digital automatic frequency calibration (AFC) loop is used. In addition to the AFC loop, a two-step negative-Gm tuning loop is proposed to provide the optimum negative-Gm to the LC tank in a wide frequency range with a fine resolution. In the coarse negative-Gm tuning loop, the number of active negative-Gm cells is selected digitally based on the target frequency. In the fine negative-Gm tuning loop, the negative-Gm is tuned finely with the bias voltage of the VCO. Also, the digital VCO gain calibration scheme is proposed to compensate for the gain variation in a wide tuning range. The VCO tuning range is 2.6 GHz, from 1.7 GHz to 4.3 GHz, and the power consumption is 2 mA to 4 mA from a 1.8 V supply. The measured VCO phase noise is -120 dBc/Hz at 1 MHz offset.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.1496/_p
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@ARTICLE{e92-c_12_1496,
author={YoungGun PU, Kang-Yoon LEE, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Wide Band VCO with Automatic Frequency, Gain, and Two-Step Amplitude Calibration Loop for DTV Tuner Application},
year={2009},
volume={E92-C},
number={12},
pages={1496-1503},
abstract={This paper presents a wide tuning range VCO with an automatic frequency, gain, and two-step amplitude calibration loop for Digital TV (DTV) tuner applications. To cover the wide tuning range, the fully digital automatic frequency calibration (AFC) loop is used. In addition to the AFC loop, a two-step negative-Gm tuning loop is proposed to provide the optimum negative-Gm to the LC tank in a wide frequency range with a fine resolution. In the coarse negative-Gm tuning loop, the number of active negative-Gm cells is selected digitally based on the target frequency. In the fine negative-Gm tuning loop, the negative-Gm is tuned finely with the bias voltage of the VCO. Also, the digital VCO gain calibration scheme is proposed to compensate for the gain variation in a wide tuning range. The VCO tuning range is 2.6 GHz, from 1.7 GHz to 4.3 GHz, and the power consumption is 2 mA to 4 mA from a 1.8 V supply. The measured VCO phase noise is -120 dBc/Hz at 1 MHz offset.},
keywords={},
doi={10.1587/transele.E92.C.1496},
ISSN={1745-1353},
month={December},}
Copy
TY - JOUR
TI - A Wide Band VCO with Automatic Frequency, Gain, and Two-Step Amplitude Calibration Loop for DTV Tuner Application
T2 - IEICE TRANSACTIONS on Electronics
SP - 1496
EP - 1503
AU - YoungGun PU
AU - Kang-Yoon LEE
PY - 2009
DO - 10.1587/transele.E92.C.1496
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2009
AB - This paper presents a wide tuning range VCO with an automatic frequency, gain, and two-step amplitude calibration loop for Digital TV (DTV) tuner applications. To cover the wide tuning range, the fully digital automatic frequency calibration (AFC) loop is used. In addition to the AFC loop, a two-step negative-Gm tuning loop is proposed to provide the optimum negative-Gm to the LC tank in a wide frequency range with a fine resolution. In the coarse negative-Gm tuning loop, the number of active negative-Gm cells is selected digitally based on the target frequency. In the fine negative-Gm tuning loop, the negative-Gm is tuned finely with the bias voltage of the VCO. Also, the digital VCO gain calibration scheme is proposed to compensate for the gain variation in a wide tuning range. The VCO tuning range is 2.6 GHz, from 1.7 GHz to 4.3 GHz, and the power consumption is 2 mA to 4 mA from a 1.8 V supply. The measured VCO phase noise is -120 dBc/Hz at 1 MHz offset.
ER -
English
