The RF PA, as one of the most essential components in any wireless system, suffers from
inherent nonlinearities. The output of a PA must comply with the linearity requirement …

In modern mobile communication systems, spectral efficient modulation formats have been
widely used, which results in the envelope of the radio frequency (RF) signal is variable and …

Signals designed for high-capacity communications result in high peak-to-average ratio
(PAR) waveforms that the transmitter power amplifier (PA) must amplify with low distortion …

As mobile communication systems evolve to handle higher data rates, their modulation
schemes only become more complicated, generating signals with large bandwidth and high …

<? Pub Dtl=""?> This paper describes the design and implementation of a package-
integrated Chireix outphasing RF switch-mode power amplifier (PA). The optimum loading …

This paper presents an envelope tracking (ET) transmitter architecture based on the
combination of a novel 3-bit (N= 3) supply modulator and digital predistortion (DPD). The …

With ever-growing energy crisis in wireless communication, effective envelope tracking
solutions are in high demand for efficient operation of power amplifiers. Conventionally, a …

Parallel-form switch-linear hybrid (SLH) envelope tracking (ET) power supply is constituted
by a linear amplifier and a switched-mode converter connected in parallel. The switched …

Power amplifiers (PAs) are key components of mobile base stations. In the last decade, the
power efficiency of PAs for 3G/4G mobile base stations has risen to over 50% as a result of …

In this paper, we present a high-efficiency transmitter based on an integrated circuit (IC)
supply modulator implemented in the same 0.15-μm gallium nitride (GaN)-on-SiC RF …