A review of technologies and design techniques of millimeter-wave power amplifiers

V Camarchia, R Quaglia, A Piacibello… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
This article reviews the state-of-the-art millimeter-wave (mm-wave) power amplifiers (PAs),
focusing on broadband design techniques. An overview of the main solid-state technologies …

A review of GaN HEMT broadband power amplifiers

KH Hamza, D Nirmal - AEU-International Journal of Electronics and …, 2020 - Elsevier
The unique material properties of GaN, wide bandgap, high thermal conductivity, high
breakdown voltage, high electron mobility and the device properties of GaN HEMT (High …

An efficient broadband reconfigurable power amplifier using active load modulation

DJ Shepphard, J Powell… - IEEE Microwave and …, 2016 - ieeexplore.ieee.org
A novel power amplifier (PA) architecture, the Load Modulated Balanced PA (LMBA), is
presented. The LMBA is able to modulate the impedance seen by a pair of RF power …

A 28-/37-/39-GHz linear Doherty power amplifier in silicon for 5G applications

S Hu, F Wang, H Wang - IEEE Journal of Solid-State Circuits, 2019 - ieeexplore.ieee.org
This paper presents the first 28-/37-/39-GHz linear Doherty power amplifier (PA) in silicon for
broadband fifthgeneration (5G) applications. We introduce a new transformer-based on-chip …

Pseudo-Doherty load-modulated balanced amplifier with wide bandwidth and extended power back-off range

Y Cao, K Chen - IEEE Transactions on Microwave Theory and …, 2020 - ieeexplore.ieee.org
This article presents a novel architecture of load-modulated balanced amplifier (LMBA) with
a unique load-modulation characteristic different from any existing LMBAs and Doherty …

Asymmetrical load modulated balanced amplifier with continuum of modulation ratio and dual-octave bandwidth

Y Cao, H Lyu, K Chen - IEEE Transactions on Microwave …, 2020 - ieeexplore.ieee.org
This article presents a new load-modulation power amplifier (PA) architecture—
asymmetrical load-modulated balanced amplifier (ALMBA). It is for the first time discovered …

A load modulated balanced amplifier for telecom applications

R Quaglia, S Cripps - IEEE Transactions on Microwave Theory …, 2017 - ieeexplore.ieee.org
This paper presents the design and characterization of a load modulated balanced amplifier
for telecom base station applications adopting a novel mode of operation. The theory of …

Convolutional neural network for behavioral modeling and predistortion of wideband power amplifiers

X Hu, Z Liu, X Yu, Y Zhao, W Chen, B Hu… - … on Neural Networks …, 2021 - ieeexplore.ieee.org
Power amplifier (PA) models, such as the neural network (NN) models and the multilayer NN
models, have problems with high complexity. In this article, we first propose a novel behavior …

Symmetrical Doherty power amplifier with extended efficiency range

M Özen, K Andersson, C Fager - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
A symmetrical Doherty power amplifier (PA) with an extended efficiency range is proposed.
This paper proves the existence of a class of symmetrical Doherty PAs having efficiency …

A 24–28-GHz GaN MMIC synchronous Doherty power amplifier with enhanced load modulation for 5G mm-wave applications

RJ Liu, XW Zhu, J Xia, ZM Zhao, Q Dong… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
In this article, a load-modulation enhanced wideband compact high-efficiency millimeter-
wave (mm-wave) gallium nitride (GaN) monolithic microwave integrated circuit (MMIC) …