Welcome to Research Repository UCD
Research Repository UCD is a digital collection of open access scholarly research publications from University College Dublin. Research Repository UCD collects, preserves and makes freely available publications including peer-reviewed articles, working papers and conference papers created by UCD researchers. Where material has already been published it is made available subject to the open-access policies of the original publishers. This service is maintained by UCD Library.
Extend High Efficiency Range of Doherty Power Amplifier by Modifying Characteristic Impedance of Transmission Lines in Load Modulation Network
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IMS2020_exdpa_final.pdf | 1.32 MB | Adobe PDF | Download |
| Title: | Extend High Efficiency Range of Doherty Power Amplifier by Modifying Characteristic Impedance of Transmission Lines in Load Modulation Network | Authors: | Pang, Jingzhou; Li, Yue; Chu, Chenhao; Peng, Jun; Zhou, Xin Yu; Zhu, Anding | Permanent link: | http://hdl.handle.net/10197/12026 | Date: | 6-Aug-2020 | Online since: | 2021-03-10T17:17:47Z | Abstract: | A load modulation network with characteristic impedance-modified transmission lines (TLs) is presented in this paper to extend the efficiency range and bandwidth of the Doherty power amplifier (DPA). Characteristic impedance values for designing the proposed DPA with different high efficiency ranges are given and wideband performance can also be achieved. A DPA with 2.55-3.35 GHz bandwidth using commercial GaN transistors is designed and implemented to validate the proposed architecture. The fabricated DPA achieves a measured 9.2-10.4 dB gain and 44.3-45.4 dBm saturated power. 57.9-75.6% and 47.6-58.8 % drain efficiency is achieved at saturation and 8 dB output power back-off (OBO) within the designed bandwidth, respectively. When driven by a 5-carrier 100 MHz OFDM signal with 8 dB peak to average power ratio (PAPR), the proposed DPA achieves adjacent channel leakage ratio (ACLR) of better than -50 dBc after digital pre-distortion with average efficiency of 53.4%, 55.3% and 56.6% at 2.75, 2.95 and 3.15 GHz centre frequencies. | Funding Details: | Science Foundation Ireland University College Dublin |
Funding Details: | Trinity College Dublin (TCD) | Type of material: | Conference Publication | Publisher: | IEEE | Copyright (published version): | 2020 IEEE | Keywords: | Doherty power amplifiers; Broadband; Extended high efficiency range; Extended high efficiency range | DOI: | 10.1109/ims30576.2020.9224070 | Language: | en | Status of Item: | Peer reviewed | Is part of: | 2020 IEEE/MTT-S International Microwave Symposium (IMS) | Conference Details: | The International Microwave Symposium (IMS) 2020, Atlanta, Georgia, United States of America, 4-6 August 2020 | This item is made available under a Creative Commons License: | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
| Appears in Collections: | Electrical and Electronic Engineering Research Collection |
Show full item record
Page view(s)
77
Last Week
3
3
Last month
checked on Apr 11, 2021
Download(s)
8
checked on Apr 11, 2021
Google ScholarTM
Check
Altmetric
If you are a publisher or author and have copyright concerns for any item, please email research.repository@ucd.ie and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.