Modern mobile communication signals require power amplifiers able to maintain very high
efficiency in a wide range of output power levels, which is a major issue for classical power …

This work reports on a wideband (WB) measurement system based on a vector network
analyzer (VNA) topology for multiport large-signal measurements. The setup exploits a …

In this article, the generating mechanisms of nonlinear distortion of the dual-input Doherty
power amplifier (DIDPA) are discussed, and based on this, an adaptive signal separation …

This paper studies the linearity of dual-input Doherty power amplifiers. We propose a
linearization scheme that uses a combination of an efficiency-optimized static splitter and a …

This work reports the design of a GaAs monolithic K-band Doherty power amplifier for point-
to-point microwave backhaul applications. The design of the module is described, from the …

Various examples are directed to a power amplifier circuit, comprising a digital predistortion
circuit, first and second power amplifiers, and a bias feedback circuit. The digital …

With the advent of 5G and external pressure to reduce greenhouse gas emissions, wireless
transceivers with low power consumption are strongly desired for future cellular systems. At …

In this paper, a GaN based symmetrical Doherty power amplifier is designed. The Doherty
amplifier bias conditions are optimized for a trade-off between power added efficiency and …

The Doherty power amplifier (DPA) is one of the most popular power amplifier architectures
for obtaining high average efficiency for modern communication signals with high peak-to …

High data-rate communication systems require the transmission of radio frequency signals
which are modulated in both amplitude and phase, presenting peak power envelope swings …