10 GHz quadrature-phase voltage controlled oscillator and prescaler

Wei-Zen Chen, Chien Liang Kuo, Chia Chun Liu

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


In this paper, a 10 GHz quadrature phase LC-VCO with a novel ring-array based injection-locked prescaler is presented. Fabricated in a 0.18 μm digital CMOS process, output frequency of VCO ranges from 10.03-9.35 GHz, and the prescaler performs divide-by 8 operation with locking range of 1 GHz. The measured phase noise from a 9.395 GHz carrier is -120 dBc/Hz at 5 MHz offset. Operating under a single 1.8 V supply, the VCO and prescaler respectively consume 21.6 mW and 12.6 mW only. Chip size are 1682.8 μm × 647.8 μm.

Original languageEnglish
Article number1257147
Pages (from-to)361-364
Number of pages4
JournalEuropean Solid-State Circuits Conference
StatePublished - 1 Dec 2003
Event29th European Solid-State Circuits Conference, ESSCIRC 2003 - Estoril, Portugal
Duration: 16 Sep 200318 Sep 2003


Dive into the research topics of '10 GHz quadrature-phase voltage controlled oscillator and prescaler'. Together they form a unique fingerprint.

Cite this