- 著者
-
リンガラ シャシャンク
トマル アビセク
ポカレル ラメシュ
金谷 晴一
吉田 啓二
- 出版者
- 一般社団法人電子情報通信学会
- 雑誌
- 電子情報通信学会技術研究報告. MW, マイクロ波 (ISSN:09135685)
- 巻号頁・発行日
- vol.110, no.14, pp.45-49, 2010-04-16
This paper presents the design of a single-ended quadrature voltage controlled ring oscillator with the improved figure of merit (FOM). It exhibits a frequency tuning range of 1.23GHz to 4.17GHz with coarse and fine steps. The design is realized in 0.18μm CMOS and the measurement results obtained show a FOM of-163.8dBc/Hz at centre frequency 3.62GHz with phase noise of -125.8dBc/Hz at 4MHz offset from the centre frequency. Also a new topology to prevent latch-up in single ended ring oscillators is proposed.