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)

2 Citations (Scopus)

384 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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2 Citations
1 Conference Contribution (Conference Proceeding)
1 Article (Academic Journal)

Analysis of the Coverage of Tunable Matching Networks with Three Tunable Elements
Arabi, E., Jiao, X., Morris, K. & Beach, M., 5 Oct 2017, 2017 IEEE MTT-S International Microwave Symposium (IMS 2017): Proceedings of a meeting held 6-9 April 2017, Hawaii, USA. Institute of Electrical and Electronics Engineers (IEEE)
Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Open Access
File
6 Citations (Scopus)

437 Downloads (Pure)
Analytical Formulas for the Coverage of Tunable Matching Networks for Reconfigurable Applications
Arabi, E., Morris, K. & Beach, M., Sept 2017, In: IEEE Transactions on Microwave Theory and Techniques. 65, 9, p. 3211-3220 11 p.
Research output: Contribution to journal › Article (Academic Journal) › peer-review

Open Access
File
19 Citations (Scopus)

593 Downloads (Pure)

1 Finished

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

Cite this

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

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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 et al.
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)

TY - GEN

T1 - A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers

AU - Arabi, Eyad

AU - Gamlath, Chris

AU - Morris, Kevin

AU - Beach, Mark

PY - 2018/2

Y1 - 2018/2

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.

U2 - 10.1109/APMC.2017.8251370

DO - 10.1109/APMC.2017.8251370

M3 - Conference Contribution (Conference Proceeding)

SN - 9781538606414

SP - 33

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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 Epub 2018 Jan 11. doi: 10.1109/APMC.2017.8251370

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

Abstract

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Research output

Analysis of the Coverage of Tunable Matching Networks with Three Tunable Elements

Analytical Formulas for the Coverage of Tunable Matching Networks for Reconfigurable Applications

Projects

FARad (Frequency Agile Radio)

Cite this