Patent ID: 8588343
Filing Date: 2013-11-19
Classification: H03F

Abstract:
1. A multiport amplifier comprising: an input hybrid network that generates a plurality of RF signals using an input RF signal; a plurality of power amplifiers that amplify and output the plurality of RF signals, respectively; an output hybrid network that generates at least one output RF signal from output signals of the plurality of power amplifiers; an error detector that generates at least one quadrature phase shift keying (QPSK) signal using the input RF signal and the output signals of the plurality of power amplifiers, and that detects an amplitude error and a phase error of the output signals of the plurality of power amplifiers by comparing the at least one QPSK signal and the reference QPSK signal; and a plurality of amplitude and phase controllers that control amplitudes and phases of plurality of RF signals according to the amplitude error and the phase error.