Trade-off Between Antenna Efficiency and Q-Factor

Mats Gustafsson; Miloslav Capek; Kurt Schab

Trade-off Between Antenna Efficiency and Q-Factor

Mats Gustafsson, Miloslav Capek, Kurt Schab

Electromagnetic Theory

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Abstract

The trade-off between radiation efficiency and antenna bandwidth, expressed in terms of Q-factor, for small antennas is formulated as a multi-objective optimization problem in current distributions of predefined support. Variants on the problem are constructed to demonstrate the consequences of requiring a self-resonant current as opposed to one tuned by an external reactance. The resulting Pareto-optimal sets reveal the relative cost of valuing low Q-factor over high efficiency, the cost in efficiency to require a self-resonant current, and other insights.

Original language	English
Publisher	Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden
Number of pages	28
Publication status	Published - 2017

Subject classification (UKÄ)

Other Electrical Engineering, Electronic Engineering, Information Engineering

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title = "Trade-off Between Antenna Efficiency and Q-Factor",

abstract = "The trade-off between radiation efficiency and antenna bandwidth, expressed in terms of Q-factor, for small antennas is formulated as a multi-objective optimization problem in current distributions of predefined support. Variants on the problem are constructed to demonstrate the consequences of requiring a self-resonant current as opposed to one tuned by an external reactance. The resulting Pareto-optimal sets reveal the relative cost of valuing low Q-factor over high efficiency, the cost in efficiency to require a self-resonant current, and other insights.",

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year = "2017",

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publisher = "Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden",

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T1 - Trade-off Between Antenna Efficiency and Q-Factor

AU - Gustafsson, Mats

AU - Capek, Miloslav

AU - Schab, Kurt

PY - 2017

Y1 - 2017

N2 - The trade-off between radiation efficiency and antenna bandwidth, expressed in terms of Q-factor, for small antennas is formulated as a multi-objective optimization problem in current distributions of predefined support. Variants on the problem are constructed to demonstrate the consequences of requiring a self-resonant current as opposed to one tuned by an external reactance. The resulting Pareto-optimal sets reveal the relative cost of valuing low Q-factor over high efficiency, the cost in efficiency to require a self-resonant current, and other insights.

AB - The trade-off between radiation efficiency and antenna bandwidth, expressed in terms of Q-factor, for small antennas is formulated as a multi-objective optimization problem in current distributions of predefined support. Variants on the problem are constructed to demonstrate the consequences of requiring a self-resonant current as opposed to one tuned by an external reactance. The resulting Pareto-optimal sets reveal the relative cost of valuing low Q-factor over high efficiency, the cost in efficiency to require a self-resonant current, and other insights.

UR - https://doi.org/10.1109/TAP.2019.2891448

M3 - Report

BT - Trade-off Between Antenna Efficiency and Q-Factor

PB - Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden

ER -

Trade-off Between Antenna Efficiency and Q-Factor

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