Low phase noise, 18 kHz frequency tuning step, 5 GHz, 15 bit digitally controlled oscillator in 0.18 æm CMOS technology

Ramesh K. Pokharel, Kenta Uchida, Abhishek Tomar, Haruichi Kanaya, Keiji Yoshida

研究成果: Contribution to journalArticle

2 引用 (Scopus)

抜粋

A method to realize the fine frequency-tuning steps using tiny capacitors instead of Metal-Insulator-Metal (MIM) capacitors is proposed for a digitally controlled oscillator (DCO). The tiny capacitors are realized by the coplanar transmission lines which are arranged unsym-metrical in a 6 metal layers (M6) foundry of 0.18 μm CMOS technology. These transmission line based capacitors are designed by using electromagnetic field simulator, and co-designed by using SPICE simulator. Finally, these capacitors are employed to design 15 bit DCO and fabricated the proposed DCO in 0.18 μm CMOS technology, and tested. The measured phase noise of DCO was -118.3 dBc/Hz (@1 MHz offset frequency), and the oscillating frequency tuned from 4.86 GHz to 5.36 GHz in the minimum frequency-tuning step of 18 kHz.

元の言語英語
ページ(範囲)1007-1013
ページ数7
ジャーナルIEICE Transactions on Electronics
E93-C
発行部数7
DOI
出版物ステータス出版済み - 7 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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