Translated title of the contribution: Development of 2/5GHz Dual Band Digitally-Controlled LC-Oscillator

内田 健太, トマル アビェシク, ポカレル ラメシュ, 金谷 晴一, 吉田 啓二

Research output: Contribution to journalArticle


This paper presents a design methodology and verification of a 2/5GHz dual band digitally-controlled oscillator (DCO). The DCO employed two spiral inductors and a switching transistor controlled by a digital signal is connected between them to operate at two bands, respectively shifting from a frequency to another. The proposed circuit is implemented in 0.18um CMOS technology and tested. The measured phase noise was -120.5dBc/Hz and -113.9dBc/Hz (both @ 1MHz offset) at carrier frequency of 2.7GHz and 4.1GHz, respectively.
Translated title of the contributionDevelopment of 2/5GHz Dual Band Digitally-Controlled LC-Oscillator
Original languageJapanese
Pages (from-to)47-51
Number of pages5
JournalIEICE technical report
Issue number291
Publication statusPublished - Nov 12 2009


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