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Low power design of CMOS 5-GHz voltage-controlled oscillator from narrowband to wideband with switching capacitor module

Low power design of CMOS 5-GHz voltage-controlled oscillator from narrowband to wideband with switching capacitor module

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In this study, we demonstrated low power and low phase noise of the complementary cross-coupled voltage-controlled oscillators (VCOs). Two chips are implemented by TSMC standard 0.18-µm Complementary Metal-Oxide Semiconductor (CMOS) process. The first one that employed a memory reduction tail transistor technique is operated from 5.17 to 5.85 GHz at a supply voltage of 1.2 V whereas its tuning range is 12.3%. The power consumption is 1.8 mW whereas the measured phase noise is −126.6 dBc/Hz at 1-MHz frequency offset from 5.17 GHz. The other employed switching capacitor modules to achieve wide tuning range and minimise phase noise, it operated from 3.64 to 5.37 GHz with 38% tuning range. The power consumption is 13.7 mW by a 1.8 V supply voltage and the measured phase noise in all tuning ranges is less than −122 dBc/Hz at 1-MHz frequency offset.

Inspec keywords: integrated circuit design; phase noise; low-power electronics; circuit tuning; capacitor switching; CMOS integrated circuits; voltage-controlled oscillators

Other keywords: frequency 5.17 GHz to 5.85 GHz; voltage 1.2 V; low phase noise; power 13.7 mW; CMOS low power design; size 0.18 mum; voltage-controlled oscillator; complementary metal-oxide semiconductor process; frequency 3.64 GHz to 5.37 GHz; frequency 1 MHz; memory reduction tail transistor technique; phase noise measurement; power 1.8 mW; wide tuning range; power consumption; switching capacitor module; voltage 1.8 V

Subjects: CMOS integrated circuits; Semiconductor integrated circuit design, layout, modelling and testing; Oscillators

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