SKY66312-11 High-Efficiency Power Amplifier Skyworks Solutions Inc. SKY66312-11 High-Efficiency Power Amplifier offers wide instantaneous bandwidth, in a fully input/output matched power amplifier (PA) with high gain and linearity. The SKY66312-11 High-Efficiency Power Amplifier has a compact 5.0mm x 5.0mm package designed for 4G LTE and 5G NR systems operating from 2300MHz to 2400MHz. The active biasing circuitry is integrated to compensate PA performance over temperature, voltage, and process variation.