Repository logo
  • Log In
    New user? Click here to register.Have you forgotten your password?
University College Dublin
  • Colleges & Schools
  • Statistics
  • All of DSpace
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. College of Engineering & Architecture
  3. School of Electrical and Electronic Engineering
  4. Electrical and Electronic Engineering Research Collection
  5. Bandwidth Enhancement of Doherty Power Amplifier Using Modified Load Modulation Network
 
  • Details
Options

Bandwidth Enhancement of Doherty Power Amplifier Using Modified Load Modulation Network

File(s)
FileDescriptionSizeFormat
Download WBSDPA__final.pdf9.24 MB
Author(s)
Li, Meng 
Pang, Jingzhou 
Li, Yue 
Zhu, Anding 
Uri
http://hdl.handle.net/10197/11746
Date Issued
June 2020
Date Available
26T11:16:26Z November 2020
Abstract
A novel Doherty power amplifier (DPA) architecture with extended bandwidth is presented in this paper. A modified load modulation network is introduced to provide impedance condition required by the Doherty operation in a wide frequency range. Analytical parameter solutions of the proposed load modulation network and the related load modulation process are presented. A DPA with 2.80-3.55 GHz bandwidth utilizing commercial GaN transistors is implemented. The fabricated DPA attains a measured 9.3-11.1 gain and 43.0-45.0 dBm saturated power. 50.0-60.6% and 66-78% drain efficiency is obtained at 6 dB output power back-off and saturation throughout the designed band, respectively. Moreover, the back-off drain efficiencies are higher than 55% within 700 MHz bandwidth. When driven by a 6-carrier 120 MHz OFDM signal with 7.0 dB peak to average power ratio, the proposed DPA achieves adjacent channel leakage ratio of better than -50 dBc after digital pre-distortion (DPD) at 3.20 GHz with average efficiency of 53.3%.
Sponsorship
European Commission Horizon 2020
Science Foundation Ireland
Type of Material
Journal Article
Publisher
IEEE
Journal
IEEE Transactions on Circuits and Systems I: Regular Papers
Volume
67
Issue
6
Start Page
1824
End Page
1834
Copyright (Published Version)
2020 IEEE
Keywords
  • Broadband

  • Doherty power amplifi...

  • High efficiency

  • Load modulation

DOI
10.1109/tcsi.2020.2972163
Language
English
Status of Item
Peer reviewed
ISSN
1549-8328
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Electrical and Electronic Engineering Research Collection
Scopus© citations
25
Acquisition Date
Feb 3, 2023
View Details
Views
570
Acquisition Date
Feb 3, 2023
View Details
Downloads
347
Last Week
7
Last Month
10
Acquisition Date
Feb 3, 2023
View Details
google-scholar
University College Dublin Research Repository UCD
The Library, University College Dublin, Belfield, Dublin 4
Phone: +353 (0)1 716 7583
Fax: +353 (0)1 283 7667
Email: mailto:research.repository@ucd.ie
Guide: http://libguides.ucd.ie/rru

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement