Extend High Efficiency Range of Doherty Power Amplifier by Modifying Characteristic Impedance of Transmission Lines in Load Modulation Network

DC FieldValueLanguage
dc.contributor.authorPang, Jingzhou-
dc.contributor.authorLi, Yue-
dc.contributor.authorChu, Chenhao-
dc.contributor.authorPeng, Jun-
dc.contributor.authorZhou, Xin Yu-
dc.contributor.authorZhu, Anding-
dc.date.accessioned2021-03-10T17:17:47Z-
dc.date.available2021-03-10T17:17:47Z-
dc.date.copyright2020 IEEEen_US
dc.date.issued2020-08-06-
dc.identifier.urihttp://hdl.handle.net/10197/12026-
dc.descriptionThe International Microwave Symposium (IMS) 2020, Atlanta, Georgia, United States of America, 4-6 August 2020en_US
dc.description.abstractA 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.en_US
dc.description.sponsorshipScience Foundation Irelanden_US
dc.description.sponsorshipUniversity College Dublinen_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.ispartof2020 IEEE/MTT-S International Microwave Symposium (IMS)en_US
dc.rights© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en_US
dc.subjectDoherty power amplifiersen_US
dc.subjectBroadbanden_US
dc.subjectExtended high efficiency rangeen_US
dc.subjectExtended high efficiency rangeen_US
dc.titleExtend High Efficiency Range of Doherty Power Amplifier by Modifying Characteristic Impedance of Transmission Lines in Load Modulation Networken_US
dc.typeConference Publicationen_US
dc.internal.authorcontactotheranding.zhu@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.doi10.1109/ims30576.2020.9224070-
dc.neeo.contributorPang|Jingzhou|aut|-
dc.neeo.contributorLi|Yue|aut|-
dc.neeo.contributorChu|Chenhao|aut|-
dc.neeo.contributorPeng|Jun|aut|-
dc.neeo.contributorZhou|Xin Yu|aut|-
dc.neeo.contributorZhu|Anding|aut|-
dc.description.othersponsorshipTrinity College Dublin (TCD)en_US
dc.date.updated2020-10-20T07:43:48Z-
dc.identifier.grantid13/RC/2077-
dc.identifier.grantid978-1-7281-6816-6-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
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