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A 5‐GHz Band Low‐Phase Noise CMOS VCO Using Above‐IC Technologies
Author(s) -
Chiou HwannKaeo,
Hsu YuanChia,
Chang DaChiang,
Juang YingZong
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27791
Subject(s) - voltage controlled oscillator , phase noise , inductor , cmos , dbc , electrical engineering , microwave , offset (computer science) , engineering , electronic engineering , voltage , telecommunications , computer science , programming language
This article presents a 5‐GHz band low phase noise CMOS voltage controlled oscillator (VCO) based on a high quality factor above‐IC inductor that is stacked on the top of a 0.18‐μm RF CMOS process using wafer level package technology. The measured phase noise of the VCO is −119.8 dBc/Hz at 1 MHz offset frequency, which is an improvement of 6 dB compared to a conventional VCO with on‐chip CMOS inductor. The design challenge of the grounding of the above‐IC inductor stacked on the CMOS structure is investigated in this work. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2051–2055, 2013