BACKGROUND Wireless communication systems are widely used to pro vide voice and
data services for multiple users using a variety of access terminals such as cellular …

This paper presents an envelope tracking power amplifier (ET PA) using a dual-mode
supply modulator for handset application. The supply modulator has a combined structure …

An envelope-tracking (ET) CMOS power amplifier (PA) is fabricated using a 0.18-μm CMOS
process. The module containing the supply modulator, the PA, and the output transformer is …

A 1.3 nJ/b IEEE 802.11 ah TX for IoT applications is presented. A fully-digital polar
architecture consisting of an all-digital PLL-based frequency modulator and an AM-retiming …

Envelope tracking is an effective way to improve the efficiency of radio frequency power
amplifiers (PAs). This article presents a wideband hybrid envelope tracking supply …

A comprehensive reference book codifying the various standards releases for High Speed
Packet Access (HSPA) wireless technology HSPA evolution has maintained its prominence …

The envelope-tracking front-end module (ETFEM) consisting of an envelope-tracking supply
modulator (ETSM), a dual-power-mode power amplifier (PA), and a single-poledouble-throw …

A CMOS saturated power amplifier (PA) is developed for optimally implementing the
envelope-tracking (ET) transmitter. The CMOS saturated PA is used to maximize the …

This paper describes analysis of an envelope-tracking power amplifier (ET PA) to show its
operational behavior. The RF PA is modeled by swee** the input power and supply …

The design and measurements of a fabricated novel digitally programmable wideband
power amplifier (PA) are presented. The PA is made suitable for use in all communication …