Analysis of optimal outphasing load trajectories for GaN Pas

Paolo Enrico De Falco; Gavin Watkins; Konstantinos Mimis; Souheil Bensmida; Kevin Morris

doi:10.23919/APMC.2018.8617660

Analysis of optimal outphasing load trajectories for GaN Pas

Paolo Enrico De Falco, Gavin Watkins, Konstantinos Mimis, Souheil Bensmida, Kevin Morris

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

5 Citations (Scopus)

194 Downloads (Pure)

Abstract

This paper presents an analysis of the optimal Z _f0 load trajectories of saturated GaN PAs through Z _f0 and Z _2f0 load-pull measurements under constant input power on a 900 MHz 10 W PA. It is shown that a DE >50% at 10 dB back-off can be obtained for a range of 160 ^? of Z _2f0 when Z _f0 is set to its optimal point. The black box combiner design equations are used as a tool to determine the complete outphasing load trajectories for outphasing systems designed for different back-off levels and extract drain efficiency performance for a range of Z _2f0 terminations. When the suboptimal outphasing load trajectories are considered, Z _2f0 is demonstrated to have a greater impact compared to the case Z _f0 follows the optimal load trajectories.

Original language	English
Title of host publication	2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	58-60
Number of pages	3
Volume	2018-November
ISBN (Electronic)	9784902339451
ISBN (Print)	9781538621844
DOIs	https://doi.org/10.23919/APMC.2018.8617660
Publication status	Published - 17 Jan 2019
Event	30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan Duration: 6 Nov 2018 → 9 Nov 2018

Conference

Conference	30th Asia-Pacific Microwave Conference, APMC 2018
Country/Territory	Japan
City	Kyoto
Period	6/11/18 → 9/11/18

Keywords

Harmonically tuned PAs
Outphasing

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10.23919/APMC.2018.8617660

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Accepted author manuscript, 1.71 MBLicence: Other

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title = "Analysis of optimal outphasing load trajectories for GaN Pas",

abstract = " This paper presents an analysis of the optimal Z f0 load trajectories of saturated GaN PAs through Z f0 and Z 2f0 load-pull measurements under constant input power on a 900 MHz 10 W PA. It is shown that a DE >50% at 10 dB back-off can be obtained for a range of 160 ? of Z 2f0 when Z f0 is set to its optimal point. The black box combiner design equations are used as a tool to determine the complete outphasing load trajectories for outphasing systems designed for different back-off levels and extract drain efficiency performance for a range of Z 2f0 terminations. When the suboptimal outphasing load trajectories are considered, Z 2f0 is demonstrated to have a greater impact compared to the case Z f0 follows the optimal load trajectories. ",

keywords = "Harmonically tuned PAs, Outphasing",

author = "{De Falco}, {Paolo Enrico} and Gavin Watkins and Konstantinos Mimis and Souheil Bensmida and Kevin Morris",

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booktitle = "2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings",

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note = "30th Asia-Pacific Microwave Conference, APMC 2018 ; Conference date: 06-11-2018 Through 09-11-2018",

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De Falco, PE, Watkins, G, Mimis, K, Bensmida, S & Morris, K 2019, Analysis of optimal outphasing load trajectories for GaN Pas. in 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings. vol. 2018-November, 8617660, Institute of Electrical and Electronics Engineers (IEEE), pp. 58-60, 30th Asia-Pacific Microwave Conference, APMC 2018, Kyoto, Japan, 6/11/18. https://doi.org/10.23919/APMC.2018.8617660

Analysis of optimal outphasing load trajectories for GaN Pas. / De Falco, Paolo Enrico; Watkins, Gavin; Mimis, Konstantinos et al.
2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings. Vol. 2018-November Institute of Electrical and Electronics Engineers (IEEE), 2019. p. 58-60 8617660.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Analysis of optimal outphasing load trajectories for GaN Pas

AU - De Falco, Paolo Enrico

AU - Watkins, Gavin

AU - Mimis, Konstantinos

AU - Bensmida, Souheil

AU - Morris, Kevin

PY - 2019/1/17

Y1 - 2019/1/17

N2 - This paper presents an analysis of the optimal Z f0 load trajectories of saturated GaN PAs through Z f0 and Z 2f0 load-pull measurements under constant input power on a 900 MHz 10 W PA. It is shown that a DE >50% at 10 dB back-off can be obtained for a range of 160 ? of Z 2f0 when Z f0 is set to its optimal point. The black box combiner design equations are used as a tool to determine the complete outphasing load trajectories for outphasing systems designed for different back-off levels and extract drain efficiency performance for a range of Z 2f0 terminations. When the suboptimal outphasing load trajectories are considered, Z 2f0 is demonstrated to have a greater impact compared to the case Z f0 follows the optimal load trajectories.

AB - This paper presents an analysis of the optimal Z f0 load trajectories of saturated GaN PAs through Z f0 and Z 2f0 load-pull measurements under constant input power on a 900 MHz 10 W PA. It is shown that a DE >50% at 10 dB back-off can be obtained for a range of 160 ? of Z 2f0 when Z f0 is set to its optimal point. The black box combiner design equations are used as a tool to determine the complete outphasing load trajectories for outphasing systems designed for different back-off levels and extract drain efficiency performance for a range of Z 2f0 terminations. When the suboptimal outphasing load trajectories are considered, Z 2f0 is demonstrated to have a greater impact compared to the case Z f0 follows the optimal load trajectories.

KW - Harmonically tuned PAs

KW - Outphasing

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DO - 10.23919/APMC.2018.8617660

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:85061831882

SN - 9781538621844

VL - 2018-November

SP - 58

EP - 60

BT - 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 30th Asia-Pacific Microwave Conference, APMC 2018

Y2 - 6 November 2018 through 9 November 2018

ER -

Analysis of optimal outphasing load trajectories for GaN Pas

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