Samsung Electronics Co., Ltd.

Postech Foundation

Jeong-Hyeon Cha

Dong-Geun Lee

Bum-Man Kim

An method and apparatus for power amplification in a mobile communication system, wherein a signal converter for receives signals from a baseband-side, modulates the received signals into oversampled baseband digital signals, and generates signals having a constant envelope with the oversampled base band digital signals, an up-converter up-converts the generated signals having the constant envelope to Radio Frequency (RF) signals for output, and a power amplifier amplifies the RF signals according to system setup levels and outputs envelope signals of a predetermined level.

Apparatus and method for high efficiency power amplification for a mobile communication system

An apparatus and method amplifies a delta-sigma modulated signal and delivers the amplified signal to a power amplifier without distortion in a communication system. The apparatus receives a delta-sigma modulated signal, phase-delays the received delta-sigma modulated signal by a multiple of 360&#xb0; for a bandwidth of the delta-sigma modulated basic signal, and amplifies the phase-delayed signal, facilitating implementation of a high-efficiency delta-sigma modulation-based amplification system.

Growing community of inventors

Pohang-si, South Korea

Jeong-Hyeon Cha