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- W4367146868 abstract "This article introduces a compact and low phase noise (PN) 19-GHz quad-core class-F voltage-controlled oscillator (VCO) based on a square-geometry transformer tank using the inductor-sharing technique. The proposed square-geometry transformer tank is inherently more compact than the prevalent topologies such as star geometry, dual-row geometry, and circular geometry. The inductor-sharing technique is introduced to merge neighboring inductors into smaller ones, which further reduces the chip area. Moreover, the proposed quad-core topology supports impedance boosting at harmonic frequencies without extra chip area consumption and class-F operation is adopted to achieve better PN performance. The quad-core VCO prototype is designed and fabricated in a 65-nm CMOS process. Measured performances are 17.6 to 19.4 GHz frequency range with <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$-$</tex-math> </inline-formula> 137.2 dBc/Hz minimum PN at 10 MHz offset from 19 GHz carrier with 46 mW power consumption and 0.9-V supply, resulting a figure of merit (FoM) of 186.1 dBc/Hz. Thanks to the proposed square-geometry and inductor sharing technique, the proposed VCO is the smallest in quad-core VCOs with a similar operating frequency with a core chip area of 0.3 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times$</tex-math> </inline-formula> 0.3 mm <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$^{2}$</tex-math> </inline-formula> and the corresponding FoM <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$_{mathrm{A}}$</tex-math> </inline-formula> is 196.5 dBc/Hz." @default.
- W4367146868 created "2023-04-28" @default.
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- W4367146868 date "2023-10-01" @default.
- W4367146868 modified "2023-10-11" @default.
- W4367146868 title "A Compact and Low Phase Noise Square-Geometry Quad-Core Class-F VCO Using Parallel Inductor-Sharing Technique" @default.
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- W4367146868 doi "https://doi.org/10.1109/jssc.2023.3266426" @default.
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