A 15-bit quadrature digital power amplifier with transformer-based complex-domain efficiency enhancement

Y Li, Y Yin, D Zheng, X Jia, J Lin, F Gao… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
This article presents a 15-bit quadrature digital power amplifier (DPA) with in-phase and
quadrature (IQ)-cell-sharing and transformer-based Doherty operation, which compensates …

A wideband energy-efficient multi-mode CMOS digital transmitter

M Beikmirza, Y Shen, LCN de Vreede… - IEEE Journal of Solid …, 2023 - ieeexplore.ieee.org
This article presents a wideband, energy-efficient digital transmitter (DTX) suitable for multi-
mode/multi-band wireless communication applications. It features various operation modes …

A fully integrated 27-dBm dual-band all-digital polar transmitter supporting 160 MHz for Wi-Fi 6 applications

A Ben-Bassat, S Gross, A Lane… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
This work presents a dual-band polar digital transmitter (P-DTX) based on a digitally
controlled two-point edge interpolation digital-to-time converter, which is capable of …

A CMOS wideband current-mode digital polar power amplifier with built-in AM–PM distortion self-compensation

JS Park, Y Wang, S Pellerano, C Hull… - IEEE Journal of Solid …, 2017 - ieeexplore.ieee.org
This paper presents a fully integrated wideband current-mode digital polar power amplifier
(DPA) in CMOS with built-in AM-PM distortion self-compensation. Feedforward capacitors …

A fully-integrated wideband digital polar transmitter with 11-bit digital-to-phase converter in 40nm CMOS

C Hu, Y Yin, T Li, Y Liu, L **ong… - IEEE Journal of Solid …, 2022 - ieeexplore.ieee.org
This work presents a wideband digital polar transmitter (DPTX) with an integrated capacitor-
digital-to-analog converter (C-DAC)-based digital-to-phase converter (DPC). A normalized …

A CMOS 1.2-V hybrid current-and voltage-mode three-way digital Doherty PA with built-in phase nonlinearity compensation

D Jung, S Li, JS Park, TY Huang… - IEEE Journal of Solid …, 2019 - ieeexplore.ieee.org
This article presents a fully integrated hybrid current-and voltage-mode three-way digital
Doherty power amplifier (PA) in CMOS using a single supply with builtin large-signal phase …

A subharmonic switching digital power amplifier for power back-off efficiency enhancement

A Zhang, MSW Chen - IEEE Journal of Solid-State Circuits, 2019 - ieeexplore.ieee.org
This paper presents a subharmonic switching (SHS) digital power amplifier (PA) architecture
that enhances power efficiency in the power back-off (PBO) region. The proposed technique …

A mm-wave switched-capacitor RFDAC

HM Nguyen, JS Walling, A Zhu… - IEEE Journal of Solid …, 2022 - ieeexplore.ieee.org
This article proposes an interleaving switched-capacitor RF digital-to-analog converter
(RFDAC) using an edge combiner within the output stage to implicitly triple its effective clock …

A multimode multi-efficiency-peak digital power amplifier

SW Yoo, SC Hung, SM Yoo - IEEE Journal of Solid-State …, 2020 - ieeexplore.ieee.org
A 30.0-dBm polar digital power amplifier (PA) is implemented based on a switched-capacitor
PA (SCPA) and multiple efficiency-enhancement techniques, such as Class-G, Doherty, and …

Split-array, C-2C switched-capacitor power amplifiers

Z Bai, A Azam, D Johnson, W Yuan… - IEEE Journal of Solid …, 2018 - ieeexplore.ieee.org
This paper presents a 13-b C-2C split-array (SA) multiphase switched-capacitor power
amplifier (SAMP-SCPA) implemented in 65-nm CMOS. The SAMP-SCPA was designed for …