A Multioutput and Highly Efficient GaN Distributed Power Amplifier for Compact Subarrays in Wideband Phased Array Antennas

Helalian, H; Zhu, X; Atarodi, M

A Multioutput and Highly Efficient GaN Distributed Power Amplifier for Compact Subarrays in Wideband Phased Array Antennas

Helalian, H Zhu, X

Atarodi, M

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Microwave Theory and Techniques, 2023, 71, (11), pp. 4800-4813
Issue Date:: 2023-11-01

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Field	Value	Language
dc.contributor.author	Helalian, H
dc.contributor.author	Zhu, X https://orcid.org/0000-0002-5814-394X
dc.contributor.author	Atarodi, M
dc.date.accessioned	2024-03-17T22:41:10Z
dc.date.available	2024-03-17T22:41:10Z
dc.date.issued	2023-11-01
dc.identifier.citation	IEEE Transactions on Microwave Theory and Techniques, 2023, 71, (11), pp. 4800-4813
dc.identifier.issn	0018-9480
dc.identifier.issn	1557-9670
dc.identifier.uri	http://hdl.handle.net/10453/176820
dc.description.abstract	This article presents the design, implementation, and measurement results of a multioutput distributed power amplifier (MODPA) in 100-nm AlN-GaN-AlGaN high-electron-mobility transistor (HEMT) on a silicon substrate. The proposed MODPA improves power-added efficiency (PAE) in distributed amplifiers (DAs) by not wasting reverse traveling waves and delivering all forward and reverse waves to the output ports. Utilizing MODPA in implementing a subarray-based phased-array transceiver reduces the number of power splitters and PAs, significantly reducing the subarray's chip area and power loss. A design methodology for broadband, efficient amplifier implementation by optimizing load/source impedances at the fundamental and harmonic frequencies is presented based on comprehensive source/load-pull simulations and class-J dynamic load lines. The presented broadband design methodology addresses an ambiguity for picking optimum load/source impedance at a single frequency caused by higher order harmonics of operating frequencies dropping in the band. The fabricated MODPA occupies a 1×3 mm2 chip area. In 0.01-25-GHz frequency, MODPA delivered 37-41-dBm power to the four outputs, with a 17-21-dB total power gain and 22%-73% total PAE. The power gain and phase variation between the four matched-output ports are less than 1.5 dB and 3°, respectively, making MODPA an attractive design for implementing subarrays.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Transactions on Microwave Theory and Techniques
dc.relation.isbasedon	10.1109/TMTT.2023.3269567
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.subject.classification	5103 Classical physics
dc.title	A Multioutput and Highly Efficient GaN Distributed Power Amplifier for Compact Subarrays in Wideband Phased Array Antennas
dc.type	Journal Article
utslib.citation.volume	71
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-03-17T22:41:05Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	71
utslib.citation.issue	11

Abstract:

This article presents the design, implementation, and measurement results of a multioutput distributed power amplifier (MODPA) in 100-nm AlN-GaN-AlGaN high-electron-mobility transistor (HEMT) on a silicon substrate. The proposed MODPA improves power-added efficiency (PAE) in distributed amplifiers (DAs) by not wasting reverse traveling waves and delivering all forward and reverse waves to the output ports. Utilizing MODPA in implementing a subarray-based phased-array transceiver reduces the number of power splitters and PAs, significantly reducing the subarray's chip area and power loss. A design methodology for broadband, efficient amplifier implementation by optimizing load/source impedances at the fundamental and harmonic frequencies is presented based on comprehensive source/load-pull simulations and class-J dynamic load lines. The presented broadband design methodology addresses an ambiguity for picking optimum load/source impedance at a single frequency caused by higher order harmonics of operating frequencies dropping in the band. The fabricated MODPA occupies a 1×3 mm2 chip area. In 0.01-25-GHz frequency, MODPA delivered 37-41-dBm power to the four outputs, with a 17-21-dB total power gain and 22%-73% total PAE. The power gain and phase variation between the four matched-output ports are less than 1.5 dB and 3°, respectively, making MODPA an attractive design for implementing subarrays.

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http://hdl.handle.net/10453/176820