A temperature-compensated CMOS LC-VCO enabling the direct modulation architecture in 2.4GHz GFSK transmitter

T. Tanzawa, H. Shibayama, R. Terauchi, K. Hisano, H. Ishikuro, S. Kousai, H. Kobayashi, H. Majima, T. Takayama, K. Agawa, M. Koizumi, F. Hatori

研究成果: Conference article

9 引用 (Scopus)

抜粋

The frequency drift of open-loop PLL is an issue for the direct modulation applications such as Bluetooth transceiver. The drift mainly comes from the temperature variation of the VCO during the TX operation. In this paper, we propose the optimum location of the VCO considering the temperature gradient through the full-chip thermal analysis. Moreover, a novel temperature- compensated VCO by 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.

元の言語English
ページ(範囲)273-276
ページ数4
ジャーナルProceedings of the Custom Integrated Circuits Conference
出版物ステータスPublished - 2004 12 1
外部発表Yes
イベントProceedings of the IEEE 2004 Custom Integrated Circuits Conference, CICC - Orlando, FL, United States
継続期間: 2004 10 32004 10 6

    フィンガープリント

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Tanzawa, T., Shibayama, H., Terauchi, R., Hisano, K., Ishikuro, H., Kousai, S., Kobayashi, H., Majima, H., Takayama, T., Agawa, K., Koizumi, M., & Hatori, F. (2004). A temperature-compensated CMOS LC-VCO enabling the direct modulation architecture in 2.4GHz GFSK transmitter. Proceedings of the Custom Integrated Circuits Conference, 273-276.