DOHERTY POWER AMPLIFIER AND THE METHOD OF MODULATING LOAD IMPEDANCE OF THE AMPLIFIER

摘要

The present invention relates to a Doherty power amplifying device capable of improving the efficiency of a high-frequency power amplifier, the Doherty power amplifying device according to an embodiment of the present invention is an input transformer, a main amplifier, an auxiliary amplifier, an output transformer, the first 90° It may include a transmission line in phase, a transmission line in the second 90° phase, and a connection network shorting output terminals having the same phase in the amplifier.