SKY66313-11 High-Efficiency Power Amplifier Skyworks Solutions Inc. SKY66313-11 High-Efficiency Power Amplifier is a fully input/output matched Power Amplifier (PA) with 37dB high gain. This amplifier is designed for FDD and TDD 4G LTE and 5G systems that operate within a wide instantaneous bandwidth of 3400MHz to 3600MHz. The SKY66313-11 amplifier is part of a high-efficiency (PAE = 15% @ +23dBm), pin-to-pin compatible PA family that supports all 3GPP bands. This power amplifier offers high linearity and excellent input and output return loss (to 50Ω system). Typical applications include driver amplifiers for micro-/macro-base stations, FDD and TDD 4G LTE/5G systems, 3GPP bands (n78, B22, and B42), enterprise small cells, and massive MIMO.