A Compact 0.73~3.1 GHz CMOS VCO Based on Active-Inductor and Active-Resistor Topology

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dc.contributor.authorPakasiri, Chatrpol
dc.contributor.authorHsu, Ke Chung
dc.contributor.authorWang, Sen
dc.date.accessioned2026-08-06T10:46:14Z
dc.date.available2026-08-06T10:46:14Z
dc.date.issued2024-06-01
dc.description.abstractIn this paper, a wideband VCO that covers popular Long-Term Evolution (LTE) 0.7 GHz and LTE 2.6 GHz frequencies is designed and developed in a standard 0.18 μm CMOS process. The VCO utilizes active inductors to achieve coarse-tuning of the inductance and a compact chip area. Moreover, an active feedback resistor is introduced into the active inductor for fine-tuning of the inductance. The feedback resistor also affects the equivalent resistance of the active inductor; therefore, wide inductance tuning and low power consumption can be obtained by optimizing the resistor. The core area of the fabricated CMOS chip is merely 0.046 mm<sup>2</sup>, excluding all testing pads. With a 6.7~10.1 mW DC consumption, the measured oscillation frequencies range from 0.73 GHz to 3.1 GHz, which demonstrates a 123.8% tuning range. At the frequencies of interest, the measured phase noises are from −80.7 to −84.5 dBc/Hz at a 1 MHz offset frequency.
dc.identifier.citationJournal of Low Power Electronics and Applications, 14(2), 2024
dc.identifier.doi10.3390/jlpea14020018
dc.identifier.issn20799268
dc.identifier.other2-s2.0-85197275570
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/15680
dc.sourceJournal of Low Power Electronics and Applications
dc.subjectactive inductor
dc.subjectactive resistor
dc.subjectCMOS
dc.subjectvoltage-controlled oscillator (VCO)
dc.subjectwide-tuning range
dc.titleA Compact 0.73~3.1 GHz CMOS VCO Based on Active-Inductor and Active-Resistor Topology
dc.typeArticle

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