A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications

J. Romero Lopera; M. Gadringer; E. Leitgeb; Helmut Paulitsch; W. Bösch

doi:10.23919/EuMIC58042.2023.10288798

A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications

J. Romero Lopera^*, M. Gadringer, E. Leitgeb, Helmut Paulitsch, W. Bösch

^*Corresponding author for this work

Institute of Microwave and Photonic Engineering (4510)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

In this paper, a high-power multi-cell, multi-stage GaN MMIC Doherty Power Amplifier (DPA) for space applications is presented. The amplifier implements a novel approach for the Doherty output power combiner, integrating matching and load modulation in the output matching network of the main and peak PAs. To achieve high efficiency operation of the DPA at 7 dB output power back-off (OBO), an asymmetric 2.5:1 input power division ratio was realized. The DPA is operating at Ka-band between 25.5 and 27 GHz supporting two 750 MHz wide channels. Two digitally controlled phase shifters are implemented in the input of the main and peak PAs allowing on-chip phase balance of the main and peak signals. This allows for optimization of the performance across the two sub-bands. The DPA delivers a maximum saturated output power over 39.5 dBm at 24% PAE and over 17% PAE at 7 dB back-off operation.

Original language	English
Title of host publication	2023 18th European Microwave Integrated Circuits Conference, EuMIC 2023
Publisher	ACM/IEEE
Pages	349-352
Number of pages	4
ISBN (Electronic)	9782874870736
ISBN (Print)	979-8-3503-4833-0
DOIs	https://doi.org/10.23919/EuMIC58042.2023.10288798
Publication status	Published - 19 Sept 2023
Event	18th European Microwave Integrated Circuits Conference: EuMIC 2023 - Berlin, Germany Duration: 18 Sept 2023 → 19 Sept 2023

Conference

Conference	18th European Microwave Integrated Circuits Conference
Country/Territory	Germany
City	Berlin
Period	18/09/23 → 19/09/23

Keywords

Microwave integrated circuits
Phase modulation
Phase shifters
Power amplifiers
Phase control
Microwave circuits
System-on-chip
load modulation
high power
phase shifter
Doherty
GaN
MMIC

ASJC Scopus subject areas

Electrical and Electronic Engineering
Instrumentation
Computer Networks and Communications

Fields of Expertise

Information, Communication & Computing

Treatment code (Nähere Zuordnung)

Experimental

Access to Document

10.23919/EuMIC58042.2023.10288798

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10288798

Cite this

Lopera, JR, Gadringer, M , Leitgeb, E , Paulitsch, H & Bösch, W 2023, A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications. in 2023 18th European Microwave Integrated Circuits Conference, EuMIC 2023., 10288798, ACM/IEEE, pp. 349-352, 18th European Microwave Integrated Circuits Conference, Berlin, Germany, 18/09/23. https://doi.org/10.23919/EuMIC58042.2023.10288798

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title = "A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications",

abstract = "In this paper, a high-power multi-cell, multi-stage GaN MMIC Doherty Power Amplifier (DPA) for space applications is presented. The amplifier implements a novel approach for the Doherty output power combiner, integrating matching and load modulation in the output matching network of the main and peak PAs. To achieve high efficiency operation of the DPA at 7 dB output power back-off (OBO), an asymmetric 2.5:1 input power division ratio was realized. The DPA is operating at Ka-band between 25.5 and 27 GHz supporting two 750 MHz wide channels. Two digitally controlled phase shifters are implemented in the input of the main and peak PAs allowing on-chip phase balance of the main and peak signals. This allows for optimization of the performance across the two sub-bands. The DPA delivers a maximum saturated output power over 39.5 dBm at 24% PAE and over 17% PAE at 7 dB back-off operation.",

keywords = "Microwave integrated circuits, Phase modulation, Phase shifters, Power amplifiers, Phase control, Microwave circuits, System-on-chip, load modulation, high power, phase shifter, Doherty, GaN, MMIC",

author = "Lopera, {J. Romero} and M. Gadringer and E. Leitgeb and Helmut Paulitsch and W. B{\"o}sch",

year = "2023",

month = sep,

day = "19",

doi = "10.23919/EuMIC58042.2023.10288798",

language = "English",

isbn = "979-8-3503-4833-0",

pages = "349--352",

booktitle = "2023 18th European Microwave Integrated Circuits Conference, EuMIC 2023",

publisher = "ACM/IEEE",

note = "18th European Microwave Integrated Circuits Conference : EuMIC 2023 ; Conference date: 18-09-2023 Through 19-09-2023",

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T1 - A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications

AU - Lopera, J. Romero

AU - Gadringer, M.

AU - Leitgeb, E.

AU - Paulitsch, Helmut

AU - Bösch, W.

PY - 2023/9/19

Y1 - 2023/9/19

N2 - In this paper, a high-power multi-cell, multi-stage GaN MMIC Doherty Power Amplifier (DPA) for space applications is presented. The amplifier implements a novel approach for the Doherty output power combiner, integrating matching and load modulation in the output matching network of the main and peak PAs. To achieve high efficiency operation of the DPA at 7 dB output power back-off (OBO), an asymmetric 2.5:1 input power division ratio was realized. The DPA is operating at Ka-band between 25.5 and 27 GHz supporting two 750 MHz wide channels. Two digitally controlled phase shifters are implemented in the input of the main and peak PAs allowing on-chip phase balance of the main and peak signals. This allows for optimization of the performance across the two sub-bands. The DPA delivers a maximum saturated output power over 39.5 dBm at 24% PAE and over 17% PAE at 7 dB back-off operation.

AB - In this paper, a high-power multi-cell, multi-stage GaN MMIC Doherty Power Amplifier (DPA) for space applications is presented. The amplifier implements a novel approach for the Doherty output power combiner, integrating matching and load modulation in the output matching network of the main and peak PAs. To achieve high efficiency operation of the DPA at 7 dB output power back-off (OBO), an asymmetric 2.5:1 input power division ratio was realized. The DPA is operating at Ka-band between 25.5 and 27 GHz supporting two 750 MHz wide channels. Two digitally controlled phase shifters are implemented in the input of the main and peak PAs allowing on-chip phase balance of the main and peak signals. This allows for optimization of the performance across the two sub-bands. The DPA delivers a maximum saturated output power over 39.5 dBm at 24% PAE and over 17% PAE at 7 dB back-off operation.

KW - Microwave integrated circuits

KW - Phase modulation

KW - Phase shifters

KW - Power amplifiers

KW - Phase control

KW - Microwave circuits

KW - System-on-chip

KW - load modulation

KW - high power

KW - phase shifter

KW - Doherty

KW - GaN

KW - MMIC

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U2 - 10.23919/EuMIC58042.2023.10288798

DO - 10.23919/EuMIC58042.2023.10288798

M3 - Conference paper

SN - 979-8-3503-4833-0

SP - 349

EP - 352

BT - 2023 18th European Microwave Integrated Circuits Conference, EuMIC 2023

PB - ACM/IEEE

T2 - 18th European Microwave Integrated Circuits Conference

Y2 - 18 September 2023 through 19 September 2023

ER -

A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications

Abstract

Conference

Keywords

ASJC Scopus subject areas

Fields of Expertise

Treatment code (Nähere Zuordnung)

Access to Document

Other files and links

Fingerprint

PHIDELITI - Photonics-Driven Sub-Millimeter Interconnect

TRITON - Heterogeneous Integration of Millimeter-Wave Technology

Cite this

A 39.5 dBm GaN Doherty Amplifier MMIC with Phase Control for Ka-band Space Applications

Abstract

Conference

Keywords

ASJC Scopus subject areas

Fields of Expertise

Treatment code (Nähere Zuordnung)

Access to Document

Other files and links

Fingerprint

Projects

PHIDELITI - Photonics-Driven Sub-Millimeter Interconnect

TRITON - Heterogeneous Integration of Millimeter-Wave Technology

Cite this