Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G.
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| Title: | Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G. |
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| Authors: | Ergin, Tugba Haykir1 (AUTHOR) tugba.haykir@yeditepe.edu.tr, Sisman, Ismail1,2 (AUTHOR), Merih, Palandoken (AUTHOR) merih.palandoken@ieee.org |
| Source: | International Journal of RF & Microwave Computer-Aided Engineering. 6/10/2026, Vol. 2026, p1-10. 10p. |
| Subjects: | Power amplifiers, Power dividers, 5G networks, Harmonic suppression filters |
| Abstract: | This paper presents the design and implementation of a high‐efficiency two‐way Doherty power amplifier (DPA) for sub‐6 GHz 5G New Radio (NR) applications, specifically targeting the n78 band (3.3–3.8 GHz). The proposed gallium nitride (GaN)‐based DPA delivers a peak output power of 42.5 dBm, a gain of 13.3 dB, and a maximum power‐added efficiency (PAE) of 83% at 3.5 GHz with VDD = 28 V under a 50‐Ω matched load. Both amplifier branches employ CG2H40010F GaN HEMTs configured in Class AB (carrier) and Class C (peaking) modes to achieve efficient load modulation across the operating band. A key feature of the proposed design is an integrated input network based on an unequal Wilkinson power divider combined with a λ/4 phase‐delay section, which is system‐level optimized to provide appropriate power division, phase alignment, and impedance matching for Doherty operation without requiring additional hybrid couplers. This compact structure minimizes insertion loss, improves amplitude–phase balance, and enhances Doherty load modulation performance across the 3.3–3.8‐GHz range. The DPA is implemented on a Rogers RO4003C substrate and incorporates λ/4 impedance inverters and a seventh‐order postharmonic suppression network to achieve superior spectral purity, reducing harmonic components below −30 dBc. Full‐wave electromagnetic simulations and experimental validations demonstrate strong agreement between measured and simulated results, confirming the effectiveness of the proposed architecture as a broadband, energy‐efficient, and manufacturable solution for next‐generation sub‐6 GHz 5G base‐station transmitters. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 194451027 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ergin%2C+Tugba+Haykir%22">Ergin, Tugba Haykir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tugba.haykir@yeditepe.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Sisman%2C+Ismail%22">Sisman, Ismail</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Merih%2C+Palandoken%22">Merih, Palandoken</searchLink> (AUTHOR)<i> merih.palandoken@ieee.org</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+RF+%26+Microwave+Computer-Aided+Engineering%22">International Journal of RF & Microwave Computer-Aided Engineering</searchLink>. 6/10/2026, Vol. 2026, p1-10. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Power+amplifiers%22">Power amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Power+dividers%22">Power dividers</searchLink><br /><searchLink fieldCode="DE" term="%225G+networks%22">5G networks</searchLink><br /><searchLink fieldCode="DE" term="%22Harmonic+suppression+filters%22">Harmonic suppression filters</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents the design and implementation of a high‐efficiency two‐way Doherty power amplifier (DPA) for sub‐6 GHz 5G New Radio (NR) applications, specifically targeting the n78 band (3.3–3.8 GHz). The proposed gallium nitride (GaN)‐based DPA delivers a peak output power of 42.5 dBm, a gain of 13.3 dB, and a maximum power‐added efficiency (PAE) of 83% at 3.5 GHz with VDD = 28 V under a 50‐Ω matched load. Both amplifier branches employ CG2H40010F GaN HEMTs configured in Class AB (carrier) and Class C (peaking) modes to achieve efficient load modulation across the operating band. A key feature of the proposed design is an integrated input network based on an unequal Wilkinson power divider combined with a λ/4 phase‐delay section, which is system‐level optimized to provide appropriate power division, phase alignment, and impedance matching for Doherty operation without requiring additional hybrid couplers. This compact structure minimizes insertion loss, improves amplitude–phase balance, and enhances Doherty load modulation performance across the 3.3–3.8‐GHz range. The DPA is implemented on a Rogers RO4003C substrate and incorporates λ/4 impedance inverters and a seventh‐order postharmonic suppression network to achieve superior spectral purity, reducing harmonic components below −30 dBc. Full‐wave electromagnetic simulations and experimental validations demonstrate strong agreement between measured and simulated results, confirming the effectiveness of the proposed architecture as a broadband, energy‐efficient, and manufacturable solution for next‐generation sub‐6 GHz 5G base‐station transmitters. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1155/mmce/8619355 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1 Subjects: – SubjectFull: Power amplifiers Type: general – SubjectFull: Power dividers Type: general – SubjectFull: 5G networks Type: general – SubjectFull: Harmonic suppression filters Type: general Titles: – TitleFull: Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ergin, Tugba Haykir – PersonEntity: Name: NameFull: Sisman, Ismail – PersonEntity: Name: NameFull: Merih, Palandoken IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 06 Text: 6/10/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 10964290 Numbering: – Type: volume Value: 2026 Titles: – TitleFull: International Journal of RF & Microwave Computer-Aided Engineering Type: main |
| ResultId | 1 |
