A 5 GHz differential colpitts CMOS VCO using the bottom PMOS cross-coupled current source

Jian An Hou, Yeong Her Wang

研究成果: Article同行評審

44 引文 斯高帕斯(Scopus)

摘要

A low phase noise differential Colpitts voltage- controlled oscillator (VCO) with the bottom series PMOS cross-coupled current source is presented. The core Colpitts VCO adopts a pair of PMOS as the biased current source at the bottom, instead of a conventional NMOS topology, to achieve a better phase noise performance as the PMOS has lower flicker and white noise than those of NMOS and the output power spectral density of PMOS operated in bottom-biased type is further less than that in top-biased one in the same power consumption. The fabricated VCO operates from 4.9 to 5.46 GHz with 10.6% tuning range when the power consumption is below 6.4 mW with a supply voltage of 1.8 V. The measured phase noise at 100 kHz offset is -100.3 dBc/Hz at 5.46 GHz and achieves a good FOM performance of -187 dBc/Hz.

原文English
文章編號4967844
頁(從 - 到)401-403
頁數3
期刊IEEE Microwave and Wireless Components Letters
19
發行號6
DOIs
出版狀態Published - 2009 六月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 電氣與電子工程

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