A compact 65W 1.7–2.3GHz class-E GaN power amplifier for base stations

A very compact, highly efficient, 65W wideband GaN class-E power amplifier is presented. Optimum class-E loading conditions are achieved over a broad frequency range using a wideband design and implementation approach. Both input and output matching networks are implemented with bondwire inductors and MOS/MIM capacitors. The resulting amplifier operates from 1.7 to 2.3GHz with a power gain of 12.3±0.9 dB, while providing an output power of 42 to 65W with a PAE ranging from 63 to 72% (DE of 68 to 75%). The total area of the amplifier, including bias arrangements, input and output matching networks to 50Ω, is only 2-by-2 cm
²
.