Single-Ended Branch PA Characterisation for Outphasing Amplifiers

Paolo Enrico de Falco; Konstantinos Mimis; Souheil Ben-Smida; Kevin Morris; Gavin Watkins; Atsushi Yamaoka; Keiichi Yamaguchi

doi:10.23919/EuMIC.2018.8539963

Single-Ended Branch PA Characterisation for Outphasing Amplifiers

Paolo Enrico de Falco, Konstantinos Mimis, Souheil Ben-Smida, Kevin Morris, Gavin Watkins, Atsushi Yamaoka, Keiichi Yamaguchi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Back-off efficiency is a key requirement for load modulated power amplifier (PA) architectures such as Chireix outphasing. This paper studies the impact of second and third harmonic impedance tuning (Z _2fo ,Z _3fo ) on the performance of a 10 Watt GaN HEMT branch PA subject to outphasing-like load modulation, operating at 900 MHz. Performance variation of up to 3 dB output power (POUT) and 50% points drain efficiency (DE) with phase manipulation alone of Z _2fo is recorded. Optimal Z _2fo is revealed to vary - throughout a fixed and for different - outphasing trajectories. A simple technique is presented, using continuous class F ^-1 closed form equations, which predicts the intrinsic optimal Z _2fo for multiple points from five outphasing load trajectories, de-embedded to the current generator (CG) plane of the device.

Original language	English
Title of host publication	2018 13th European Microwave Integrated Circuits Conference (EuMIC)
Publisher	IEEE
Pages	178-181
Number of pages	4
ISBN (Electronic)	9782874870521
DOIs	https://doi.org/10.23919/EuMIC.2018.8539963
Publication status	Published - 19 Nov 2018
Event	13th European Microwave Integrated Circuits Conference 2018 - Madrid, Spain Duration: 24 Sept 2018 → 25 Sept 2018

Conference

Conference	13th European Microwave Integrated Circuits Conference 2018
Abbreviated title	EuMIC 2018
Country/Territory	Spain
City	Madrid
Period	24/09/18 → 25/09/18

Keywords

harmonically tuned
outphasing
PA

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Instrumentation

Access to Document

10.23919/EuMIC.2018.8539963

Cite this

@inproceedings{b2063db6c2074f5fa77ebfd00f7b4d37,

title = "Single-Ended Branch PA Characterisation for Outphasing Amplifiers",

abstract = " Back-off efficiency is a key requirement for load modulated power amplifier (PA) architectures such as Chireix outphasing. This paper studies the impact of second and third harmonic impedance tuning (Z 2fo ,Z 3fo ) on the performance of a 10 Watt GaN HEMT branch PA subject to outphasing-like load modulation, operating at 900 MHz. Performance variation of up to 3 dB output power (POUT) and 50\% points drain efficiency (DE) with phase manipulation alone of Z 2fo is recorded. Optimal Z 2fo is revealed to vary - throughout a fixed and for different - outphasing trajectories. A simple technique is presented, using continuous class F -1 closed form equations, which predicts the intrinsic optimal Z 2fo for multiple points from five outphasing load trajectories, de-embedded to the current generator (CG) plane of the device. ",

keywords = "harmonically tuned, outphasing, PA",

author = "\{de Falco\}, \{Paolo Enrico\} and Konstantinos Mimis and Souheil Ben-Smida and Kevin Morris and Gavin Watkins and Atsushi Yamaoka and Keiichi Yamaguchi",

year = "2018",

month = nov,

day = "19",

doi = "10.23919/EuMIC.2018.8539963",

language = "English",

pages = "178--181",

booktitle = "2018 13th European Microwave Integrated Circuits Conference (EuMIC)",

publisher = "IEEE",

address = "United States",

note = "13th European Microwave Integrated Circuits Conference 2018, EuMIC 2018 ; Conference date: 24-09-2018 Through 25-09-2018",

}

de Falco, PE, Mimis, K, Ben-Smida, S, Morris, K, Watkins, G, Yamaoka, A & Yamaguchi, K 2018, Single-Ended Branch PA Characterisation for Outphasing Amplifiers. in 2018 13th European Microwave Integrated Circuits Conference (EuMIC). IEEE, pp. 178-181, 13th European Microwave Integrated Circuits Conference 2018, Madrid, Spain, 24/09/18. https://doi.org/10.23919/EuMIC.2018.8539963

TY - GEN

T1 - Single-Ended Branch PA Characterisation for Outphasing Amplifiers

AU - de Falco, Paolo Enrico

AU - Mimis, Konstantinos

AU - Ben-Smida, Souheil

AU - Morris, Kevin

AU - Watkins, Gavin

AU - Yamaoka, Atsushi

AU - Yamaguchi, Keiichi

PY - 2018/11/19

Y1 - 2018/11/19

N2 - Back-off efficiency is a key requirement for load modulated power amplifier (PA) architectures such as Chireix outphasing. This paper studies the impact of second and third harmonic impedance tuning (Z 2fo ,Z 3fo ) on the performance of a 10 Watt GaN HEMT branch PA subject to outphasing-like load modulation, operating at 900 MHz. Performance variation of up to 3 dB output power (POUT) and 50% points drain efficiency (DE) with phase manipulation alone of Z 2fo is recorded. Optimal Z 2fo is revealed to vary - throughout a fixed and for different - outphasing trajectories. A simple technique is presented, using continuous class F -1 closed form equations, which predicts the intrinsic optimal Z 2fo for multiple points from five outphasing load trajectories, de-embedded to the current generator (CG) plane of the device.

AB - Back-off efficiency is a key requirement for load modulated power amplifier (PA) architectures such as Chireix outphasing. This paper studies the impact of second and third harmonic impedance tuning (Z 2fo ,Z 3fo ) on the performance of a 10 Watt GaN HEMT branch PA subject to outphasing-like load modulation, operating at 900 MHz. Performance variation of up to 3 dB output power (POUT) and 50% points drain efficiency (DE) with phase manipulation alone of Z 2fo is recorded. Optimal Z 2fo is revealed to vary - throughout a fixed and for different - outphasing trajectories. A simple technique is presented, using continuous class F -1 closed form equations, which predicts the intrinsic optimal Z 2fo for multiple points from five outphasing load trajectories, de-embedded to the current generator (CG) plane of the device.

KW - harmonically tuned

KW - outphasing

KW - PA

UR - https://www.scopus.com/pages/publications/85059754685

U2 - 10.23919/EuMIC.2018.8539963

DO - 10.23919/EuMIC.2018.8539963

M3 - Conference contribution

AN - SCOPUS:85059754685

SP - 178

EP - 181

BT - 2018 13th European Microwave Integrated Circuits Conference (EuMIC)

PB - IEEE

T2 - 13th European Microwave Integrated Circuits Conference 2018

Y2 - 24 September 2018 through 25 September 2018

ER -

Single-Ended Branch PA Characterisation for Outphasing Amplifiers

Abstract

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this