Envelope Tracking and Digital Pre-Distortion Test Solution for RF Amplifiers

Envelope Tracking and Digital Pre-Distortion Test Solution for RF Amplifiers

Envelope Tracking and Digital Pre-Distortion Test Solution for RF Amplifiers

A Hysteretic Two-phase Supply Modulator for Envelope Tracking RF Power Amplifiers

In this paper a two-phase supply modulator suitable for envelope tracking power amplifier is presented. The designed supply modulator has the linear assisted switching architecture. Two-phase architecture is used in order to reduce the output switching ripples. The proposed architecture uses hysteretic control instead of pulse width modulation (PWM) which significantly reduces the circuit compl...

Computationally efficient real-time digital predistortion architectures for envelope tracking power amplifiers

This paper presents and discusses two possible real-time digital predistortion (DPD) architectures suitable for envelope tracking (ET) power amplifiers (PAs) oriented at a final computationally efficient implementation in a field programmable gate array (FPGA) device. In ET systems, by using a shaping function is possible to modulate the supply voltage according to different criteria. One possi...

Linearization of High Efficiency Transmitters for Wireless Communications

In recent years, reducing energy consumption in wireless communication systems has gained prominence. In order to achieve this energy saving, high power efficiency is necessary for the wireless transmitters used. Unfortunately, wireless transmitters usually exhibit severe distortion when acquiring high efficiency, mainly due to the design of power amplifiers. Also, RF modulators, which are buil...