InGaP HBT MMIC Development

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  • Author: Andy Dearn, Liam Devlin
InGaP HBT is being increasingly adopted as the technology of choice for low voltage PA’s, integrated VCO’s and broadband DC coupled amplifiers. Devices with high Fmax can be fabricated with moderate emitter geometries and proven, commercial parts are widely available. This article discusses a commercially available InGaP HBT MMIC process and presents the design and measured performance of two specific MMIC