Sughrue Mion, PLLC
Doherty amplifier and transmitter using mixer
A transmitter and a signal amplifier are provided. The signal amplifier includes a digital-to-analog converter converting an input digital signal into an analog signal, a local oscillator signal generator outputting in-phase and quadrature-phase oscillator signals, a first mixer mixing the analog signal with the in-phase local oscillator signal to output an in-phase high frequency signal, a second mixer mixing the analog signal with the quadrature-phase local oscillator signal to output a quadrature-phase high frequency signal, a main amplifier amplifying the in-phase high frequency signal output from the first mixer, and an auxiliary amplifier amplifying the quadrature-phase high frequency signal output from the second mixer.
Samsung Electronics Co., Ltd.
H H H
H03F H04B H04B
inventional additional inventional
Jin-wook Jin-soo Heung-bae Do-hyung Seong-soo
Burm Park Lee Kim Lee