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A 15-GHz monolithic low-phase-noise VCO using AlGaAs/GaAs HBT technology

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6 Author(s)

A 15-GHz fully monolithic low-phase-noise VCO MMIC fabricated without an external tuning element using an AlGaAs/GaAs HBT technology was developed. An HBT and a variable capacitance diode or varactor were fabricated in an MMIC chip using-standard HBT IC process. A tuning range of about 600 MHz was obtained with varying control voltage from 0 to 4 V with an output power of more than -4 dBm. The low phase noise for an offset frequency of 100 kHz of -85 dBc/Hz was measured at a frequency of 15.6 GHz

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Solid-State Circuits, IEEE Journal of  (Volume:27 ,  Issue: 10 )