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

Eyad Arabi; Kevin Morris; Mark Beach

doi:10.1109/TMTT.2017.2687902

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

Eyad Arabi, Kevin Morris, Mark Beach

Research output: Contribution to journal › Article (Academic Journal) › peer-review

17 Citations (Scopus)

598 Downloads (Pure)

Abstract

Tunable matching networks are essential components for agile radio frequency systems. To optimally design such networks, the total area they cover on the Smith chart needs to be determined. In this work, the coverage areas of typical matching networks have been determined analytically for the first time. It has been found that the coverage area is encompassed by up to five arcs. Analytical expressions for the centers and radii for these arcs have been derived. The theoretical analysis is provided for four typical matching networks and verified by circuit simulation and measured data. Moreover, a dynamically load-modulated power amplifier has been designed using the presented theoretical techniques, which demonstrates a measured improvement in the power added efficiency of up to 5\% in the frequency range of (0.8 - 0.9) GHz.

Original language	English
Pages (from-to)	3211-3220
Number of pages	11
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	65
Issue number	9
Early online date	7 Apr 2017
DOIs	https://doi.org/10.1109/TMTT.2017.2687902
Publication status	Published - Sept 2017

Keywords

Smith chart
tunable matching networks
power amplifiers
re-configurable
dynamic load modulation

Access to Document

10.1109/TMTT.2017.2687902

Full-text PDF (accepted author manuscript)
This is the author accepted manuscript (AAM). The final published version (version of record) is available online via IEEE at http://ieeexplore.ieee.org/document/7894227/. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 9.47 MB

Handle.net

Persistent link

17 Citations
1 Conference Contribution (Conference Proceeding)
1 Article (Academic Journal)

A Comparison of Lumped-Based Tunable Matching Networks for Dynamically-Load-Modulated Power Amplifiers
Arabi, E., Gamlath, C., Morris, K. & Beach, M., Feb 2018, 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), p. 33-36 4 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Open Access
File
2 Citations (Scopus)

398 Downloads (Pure)
Analysis of the Coverage of Tunable Matching Networks for the Imperfect Matching case
Arabi, E., Gamlath, C., Morris, K. & Beach, M., 31 Aug 2018, (E-pub ahead of print) In: IEEE Transactions on Circuits and Systems II: Express Briefs. 5 p.
Research output: Contribution to journal › Article (Academic Journal) › peer-review

Open Access
File
3 Citations (Scopus)

383 Downloads (Pure)

1 Finished

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

Cite this

@article{b7bfb9bd660746128674029938e7c8d9,

title = "Analytical Formulas for the Coverage of Tunable Matching Networks for Reconfigurable Applications",

abstract = "Tunable matching networks are essential components for agile radio frequency systems. To optimally design such networks, the total area they cover on the Smith chart needs to be determined. In this work, the coverage areas of typical matching networks have been determined analytically for the first time. It has been found that the coverage area is encompassed by up to five arcs. Analytical expressions for the centers and radii for these arcs have been derived. The theoretical analysis is provided for four typical matching networks and verified by circuit simulation and measured data. Moreover, a dynamically load-modulated power amplifier has been designed using the presented theoretical techniques, which demonstrates a measured improvement in the power added efficiency of up to 5\% in the frequency range of (0.8 - 0.9) GHz.",

keywords = "Smith chart, tunable matching networks, power amplifiers, re-configurable, dynamic load modulation",

author = "Eyad Arabi and Kevin Morris and Mark Beach",

year = "2017",

month = sep,

doi = "10.1109/TMTT.2017.2687902",

language = "English",

volume = "65",

pages = "3211--3220",

journal = "IEEE Transactions on Microwave Theory and Techniques",

issn = "0018-9480",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

number = "9",

}

TY - JOUR

T1 - Analytical Formulas for the Coverage of Tunable Matching Networks for Reconfigurable Applications

AU - Arabi, Eyad

AU - Morris, Kevin

AU - Beach, Mark

PY - 2017/9

Y1 - 2017/9

N2 - Tunable matching networks are essential components for agile radio frequency systems. To optimally design such networks, the total area they cover on the Smith chart needs to be determined. In this work, the coverage areas of typical matching networks have been determined analytically for the first time. It has been found that the coverage area is encompassed by up to five arcs. Analytical expressions for the centers and radii for these arcs have been derived. The theoretical analysis is provided for four typical matching networks and verified by circuit simulation and measured data. Moreover, a dynamically load-modulated power amplifier has been designed using the presented theoretical techniques, which demonstrates a measured improvement in the power added efficiency of up to 5\% in the frequency range of (0.8 - 0.9) GHz.

AB - Tunable matching networks are essential components for agile radio frequency systems. To optimally design such networks, the total area they cover on the Smith chart needs to be determined. In this work, the coverage areas of typical matching networks have been determined analytically for the first time. It has been found that the coverage area is encompassed by up to five arcs. Analytical expressions for the centers and radii for these arcs have been derived. The theoretical analysis is provided for four typical matching networks and verified by circuit simulation and measured data. Moreover, a dynamically load-modulated power amplifier has been designed using the presented theoretical techniques, which demonstrates a measured improvement in the power added efficiency of up to 5\% in the frequency range of (0.8 - 0.9) GHz.

KW - Smith chart

KW - tunable matching networks

KW - power amplifiers

KW - re-configurable

KW - dynamic load modulation

U2 - 10.1109/TMTT.2017.2687902

DO - 10.1109/TMTT.2017.2687902

M3 - Article (Academic Journal)

SN - 0018-9480

VL - 65

SP - 3211

EP - 3220

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 9

ER -

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

Abstract

Keywords

Access to Document

Handle.net

Fingerprint

Research output

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

Analysis of the Coverage of Tunable Matching Networks for the Imperfect Matching case

Projects

FARad (Frequency Agile Radio)

Cite this