A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers

Eyad Arabi; Chris Gamlath; Kevin Morris; Mark Beach

doi:10.1109/APMC.2017.8251370

A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers

Eyad Arabi, Chris Gamlath, Kevin Morris, Mark Beach

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

1 Citation (Scopus)

253 Downloads (Pure)

Abstract

The power-added-efficiency of power amplifiers deteriorates rapidly as the input power drops. The efficiency at power back-off can be improved by modulating the load dynamically with a tunable matching network. In this work, a novel design method is presented in which the dynamic range of the tunable matching network is plotted on top of the required dynamic load. A comparison between conventional topologies has been performed, and the optimal network is chosen based on its dynamic range and the tunability of its capacitors. As proof of concept, an amplifier has been fabricated and tested achieving a maximum efficiency of 60% and an improvement of 9% with 6 dB of power back-off. The proposed method is useful in designing and optimizing tunable matching networks.

Original language	English
Title of host publication	2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017)
Subtitle of host publication	Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	33-36
Number of pages	4
ISBN (Electronic)	9781538606407
ISBN (Print)	9781538606414
DOIs	https://doi.org/10.1109/APMC.2017.8251370
Publication status	Published - Feb 2018

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FARad (Frequency Agile Radio)
Beach, M. A.
26/05/15 → 31/03/19
Project: Research

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Arabi, E., Gamlath, C., Morris, K., & Beach, M. (2018). A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers. In 2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017): Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia (pp. 33-36). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/APMC.2017.8251370

Arabi, Eyad ; Gamlath, Chris ; Morris, Kevin ; Beach, Mark. / A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers. 2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017): Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia. Institute of Electrical and Electronics Engineers (IEEE), 2018. pp. 33-36

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title = "A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers",

abstract = "The power-added-efficiency of power amplifiers deteriorates rapidly as the input power drops. The efficiency at power back-off can be improved by modulating the load dynamically with a tunable matching network. In this work, a novel design method is presented in which the dynamic range of the tunable matching network is plotted on top of the required dynamic load. A comparison between conventional topologies has been performed, and the optimal network is chosen based on its dynamic range and the tunability of its capacitors. As proof of concept, an amplifier has been fabricated and tested achieving a maximum efficiency of 60% and an improvement of 9% with 6 dB of power back-off. The proposed method is useful in designing and optimizing tunable matching networks.",

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Arabi, E, Gamlath, C, Morris, K & Beach, M 2018, A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers. in 2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017): Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia. Institute of Electrical and Electronics Engineers (IEEE), pp. 33-36. https://doi.org/10.1109/APMC.2017.8251370

A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers. / Arabi, Eyad; Gamlath, Chris; Morris, Kevin ; Beach, Mark.

2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017): Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia. Institute of Electrical and Electronics Engineers (IEEE), 2018. p. 33-36.

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

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AU - Morris, Kevin

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PY - 2018/2

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N2 - The power-added-efficiency of power amplifiers deteriorates rapidly as the input power drops. The efficiency at power back-off can be improved by modulating the load dynamically with a tunable matching network. In this work, a novel design method is presented in which the dynamic range of the tunable matching network is plotted on top of the required dynamic load. A comparison between conventional topologies has been performed, and the optimal network is chosen based on its dynamic range and the tunability of its capacitors. As proof of concept, an amplifier has been fabricated and tested achieving a maximum efficiency of 60% and an improvement of 9% with 6 dB of power back-off. The proposed method is useful in designing and optimizing tunable matching networks.

AB - The power-added-efficiency of power amplifiers deteriorates rapidly as the input power drops. The efficiency at power back-off can be improved by modulating the load dynamically with a tunable matching network. In this work, a novel design method is presented in which the dynamic range of the tunable matching network is plotted on top of the required dynamic load. A comparison between conventional topologies has been performed, and the optimal network is chosen based on its dynamic range and the tunability of its capacitors. As proof of concept, an amplifier has been fabricated and tested achieving a maximum efficiency of 60% and an improvement of 9% with 6 dB of power back-off. The proposed method is useful in designing and optimizing tunable matching networks.

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DO - 10.1109/APMC.2017.8251370

M3 - Conference Contribution (Conference Proceeding)

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BT - 2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017)

PB - Institute of Electrical and Electronics Engineers (IEEE)

ER -

Arabi E, Gamlath C, Morris K , Beach M. A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers. In 2017 IEEE Asia Pacific Microwave Conference (APMC) (APMC2017): Proceedings of a meeting held 13-16 November 2017, Kuala Lumpur, Malaysia. Institute of Electrical and Electronics Engineers (IEEE). 2018. p. 33-36 https://doi.org/10.1109/APMC.2017.8251370

A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers

Abstract

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