This article reviews trends, architectures, and recent developments in CMOS-based supply
modulators (SM) used for envelope-tracking power amplifiers (ET-PAs). This review details …

A Ka-band highly linear power amplifier (PA) is implemented in 28-nm bulk CMOS
technology. Using a deep class-AB PA topology with appropriate harmonic control circuit …

The structure of the modern wireless network evolves rapidly and maturing 4G networks
pave the way to next generation 5G communication. A tendency of shifting from traditional …

Increasing the efficiency of transmitters, as the largest consumers of energy, is relevant for
any wireless communication devices. For higher efficiency, a number of methods are used …

Configuration-feedback circuitry and transceiver circuitry are disclosed. The configuration-
feedback circuitry regulates an output power from a radio frequency power amplifier based …

This disclosure relates to radio frequency (RF) power con verters and methods of operating
the same. In one embodi ment, an RF power converter includes an RF switching con verter …

(57) ABSTRACT A radio frequency (RF) system includes an RF power ampli fier (PA), which
uses an envelope tracking power supply voltage to provide an RF transmit signal, which has …

A switch mode power supply converter and a parallel amplifier are disclosed. The switch
mode power supply converter is coupled to a modulated power supply output and the …

(57) ABSTRACT A communication unit has an envelope tracking system oper ably coupled
to a power amplifier, PA, module. The envelope tracking system has at least one slew rate …

This article presents a switched-transformer-based polar Doherty digital power amplifier
(DPA) for deep back-off efficiency enhancement. A single-transformer-footprint parallel …