The effects of the peaking currents on the performance of the Doherty power amplifier: an analytical and experimental study
Sign Up to like & getrecommendations! Published in 2018 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-018-1202-9
Abstract: Recognizing that the ratio of the peaking and main amplifier transconductances is a crucial parameter in the design of Doherty power amplifiers, we propose an analytical method to specify the optimum value of this ratio.… read more here.
Keywords: doherty power; peaking amplifier; power amplifier; power ... See more keywords
Behavioral Modeling of GaN Doherty Power Amplifiers Using Memoryless Polar Domain Functions and Deep Neural Networks
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3036186
Abstract: In this paper, novel Doherty Power Amplifier (DPA) models are presented. The motivation behind the proposed models is to accurately predict static nonlinearities in the compression regions of the carrier and peaking amplifiers. DPAs suffer… read more here.
Keywords: polar domain; deep neural; power; model ... See more keywords
Broadband InGaP/GaAs HBT Doherty Power Amplifier IC Using Direct Interstage Power Division for Compact 5G NR Handset Module
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3256079
Abstract: This paper presents a 2.8-3.8 GHz broadband 2-stage fully differential Doherty power amplifier using direct interstage power division based on a 2- $\mu \text{m}$ InGaP/GaAs HBT process for 5G new radio handset applications. A compact… read more here.
Keywords: doherty power; interstage; power; broadband ... See more keywords
A 600W broadband doherty power amplifier with improved linearity for wireless communication system
Sign Up to like & getrecommendations! Published in 2017 at "China Communications"
DOI: 10.1109/cc.2017.7868167
Abstract: An asymmetric Doherty architecture based on three identical transistors is proposed in this paper. This proposed three-way topology reduces the difficulty in designing matching networks brought by the low optimal impedance of high power transistors.… read more here.
Keywords: doherty power; power; topology; power amplifier ... See more keywords
A Millimeter-Wave CMOS Series-Doherty Power Amplifier With Post-Silicon Inter-Stage Passive Validation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2022.3175685
Abstract: This article presents a wideband series-Doherty power amplifier (SDPA) for millimeter-wave (mm-wave) fifth-generation (5G) applications. It features a compact two-step impedance inverting-based series-Doherty power combiner that provides broadband close-to-perfect power back-off (PBO) efficiency enhancement. The… read more here.
Keywords: series doherty; doherty power; power; inter stage ... See more keywords
Driver Topologies for RF Doherty Power Amplifiers
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2016.2629977
Abstract: In this letter, class-B, embedded class-B, and Doherty driver topologies are investigated for RF Doherty Power Amplifiers (PAs). The investigation is firstly conducted theoretically and by simulations and then verified by design and implementation of… read more here.
Keywords: doherty power; power amplifiers; class; doherty driver ... See more keywords
Deep Neural Network-Based Digital Predistorter for Doherty Power Amplifiers
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2018.2888955
Abstract: In this letter, measured adjacent channel leakage ratio (ACLR) results using a GaN Doherty power amplifier will show that for less than 2000 coefficients, sigmoid activated deep neural network (DNN)-based digital predistorter (DPD) outperforms rectified… read more here.
Keywords: neural network; deep neural; digital predistorter; based digital ... See more keywords
Broadband Highly Efficient Doherty Power Amplifiers
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Circuits and Systems Magazine"
DOI: 10.1109/mcas.2020.3027221
Abstract: Modern wireless communication systems with large bandwidth and high peak-to-average power ratios (PAPRs) have been and will continue to be in high demand. This puts a strain on the transmitter, which has to operate with… read more here.
Keywords: doherty pas; power; doherty power; doherty ... See more keywords
Broadband Efficiency-Enhanced Mutually Coupled Harmonic Postmatching Doherty Power Amplifier
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2017.2658689
Abstract: The postmatching topology is an effective approach for broadening the bandwidth of a Doherty power amplifier (DPA). Its efficiency can be enhanced using a second-harmonic short-circuit network (SHSN), but at the expense of bandwidth. In… read more here.
Keywords: doherty power; efficiency enhanced; power; power amplifier ... See more keywords
Miniaturized Broadband Doherty Power Amplifier Using Simplified Output Matching Topology
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2022.3169883
Abstract: This paper presents a Doherty power amplifier (DPA) with reduced size and wide bandwidth by using a simplified output matching topology. In broadband DPA designs, post-matching networks are usually added after the combing node, which… read more here.
Keywords: topology; doherty power; output; output matching ... See more keywords
A Compact and Broadband Doherty Power Amplifier Without Post-Matching Network
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3218006
Abstract: Post-matching network (PMN) dominates broadband Doherty power amplifier (DPA) design, but at the cost of large footprint. This brief presents a PMN-free, compact and broadband DPA based on dual-mode impedance transformer (IT) which can simultaneously… read more here.
Keywords: matching network; broadband doherty; post matching; doherty power ... See more keywords