A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters

Toru TANZAWA; Kenichi AGAWA; Hiroyuki SHIBAYAMA; Ryota TERAUCHI; Katsumi HISANO; Hiroki ISHIKURO; Shouhei KOUSAI; Hiroyuki KOBAYASHI; Hideaki MAJIMA; Toru TAKAYAMA; Masayuki KOIZUMI; Fumitoshi HATORI

doi:10.1093/ietele/e88-c.4.490

A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters

Toru TANZAWA, Kenichi AGAWA, Hiroyuki SHIBAYAMA, Ryota TERAUCHI, Katsumi HISANO, Hiroki ISHIKURO, Shouhei KOUSAI, Hiroyuki KOBAYASHI, Hideaki MAJIMA, Toru TAKAYAMA, Masayuki KOIZUMI, Fumitoshi HATORI

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A frequency drift of open-loop PLL is an issue for the direct-modulation applications such as Bluetooth transceiver. The drift mainly comes from a temperature variation of VCO during the transmission operation. In this paper, we propose the optimum location of the VCO, considering the temperature gradient through the whole-chip thermal analysis. Moreover, a novel temperature-compensated VCO, employing a new biasing scheme, is proposed. The combination of these two techniques enables the power reduction of the transmitter by 33% without sacrificing the performance.

Publication: IEICE TRANSACTIONS on Electronics Vol.E88-C No.4 pp.490-495

Publication Date: 2005/04/01

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DOI: 10.1093/ietele/e88-c.4.490

Type of Manuscript: Special Section PAPER (Special Section on Low-Power LSI and Low-Power IP)

Category: Analog

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Toru TANZAWA, Kenichi AGAWA, Hiroyuki SHIBAYAMA, Ryota TERAUCHI, Katsumi HISANO, Hiroki ISHIKURO, Shouhei KOUSAI, Hiroyuki KOBAYASHI, Hideaki MAJIMA, Toru TAKAYAMA, Masayuki KOIZUMI, Fumitoshi HATORI, "A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters" in IEICE TRANSACTIONS on Electronics, vol. E88-C, no. 4, pp. 490-495, April 2005, doi: 10.1093/ietele/e88-c.4.490.
Abstract: A frequency drift of open-loop PLL is an issue for the direct-modulation applications such as Bluetooth transceiver. The drift mainly comes from a temperature variation of VCO during the transmission operation. In this paper, we propose the optimum location of the VCO, considering the temperature gradient through the whole-chip thermal analysis. Moreover, a novel temperature-compensated VCO, employing a new biasing scheme, is proposed. The combination of these two techniques enables the power reduction of the transmitter by 33% without sacrificing the performance.
URL: https://globals.ieice.org/en_transactions/electronics/10.1093/ietele/e88-c.4.490/_p

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@ARTICLE{e88-c_4_490,
author={Toru TANZAWA, Kenichi AGAWA, Hiroyuki SHIBAYAMA, Ryota TERAUCHI, Katsumi HISANO, Hiroki ISHIKURO, Shouhei KOUSAI, Hiroyuki KOBAYASHI, Hideaki MAJIMA, Toru TAKAYAMA, Masayuki KOIZUMI, Fumitoshi HATORI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters},
year={2005},
volume={E88-C},
number={4},
pages={490-495},
abstract={A frequency drift of open-loop PLL is an issue for the direct-modulation applications such as Bluetooth transceiver. The drift mainly comes from a temperature variation of VCO during the transmission operation. In this paper, we propose the optimum location of the VCO, considering the temperature gradient through the whole-chip thermal analysis. Moreover, a novel temperature-compensated VCO, employing a new biasing scheme, is proposed. The combination of these two techniques enables the power reduction of the transmitter by 33% without sacrificing the performance.},
keywords={},
doi={10.1093/ietele/e88-c.4.490},
ISSN={},
month={April},}

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TY - JOUR
TI - A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters
T2 - IEICE TRANSACTIONS on Electronics
SP - 490
EP - 495
AU - Toru TANZAWA
AU - Kenichi AGAWA
AU - Hiroyuki SHIBAYAMA
AU - Ryota TERAUCHI
AU - Katsumi HISANO
AU - Hiroki ISHIKURO
AU - Shouhei KOUSAI
AU - Hiroyuki KOBAYASHI
AU - Hideaki MAJIMA
AU - Toru TAKAYAMA
AU - Masayuki KOIZUMI
AU - Fumitoshi HATORI
PY - 2005
DO - 10.1093/ietele/e88-c.4.490
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E88-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2005
AB - A frequency drift of open-loop PLL is an issue for the direct-modulation applications such as Bluetooth transceiver. The drift mainly comes from a temperature variation of VCO during the transmission operation. In this paper, we propose the optimum location of the VCO, considering the temperature gradient through the whole-chip thermal analysis. Moreover, a novel temperature-compensated VCO, employing a new biasing scheme, is proposed. The combination of these two techniques enables the power reduction of the transmitter by 33% without sacrificing the performance.
ER -