Selecting High-Linearity MMIC Amplifiers for Use With Complex Digital Waveforms

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  • Author: Ted Heil and Steve Crain
Enhanced Mode GaAs PHEMT (EPHEMT) based MMIC amplifiers provide users advantages in both broadband noise figure and intermodulation performance, setting them apart from previous generations of GaAs MMIC amplifier designs. Historically known for their extremely low noise figure, PHEMTs have also been used extensively for power applications in the mobile PA market, however, recent designs possess a combination of low noise and high intermodulation distortion suppression that improves both ends of the dynamic range over broad frequency range.
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