On Convergence of the Upper Bound on the Ratio of Gain to Quality Factor

An antenna's practical far-field distance can be estimated from the upper bound on the ratio of its gain to quality factor. This upper bound is an infinite series that can be truncated based on the desired accuracy. We investigate the convergence properties of this bounding series. We find that...

Full description

Saved in:
Bibliographic Details
Published in2021 Antenna Measurement Techniques Association Symposium (AMTA) pp. 1 - 3
Main Authors Yuffa, Alex J., Valdez, Marc Andrew, Derat, Benoit
Format Conference Proceeding
LanguageEnglish
Published AMTA 24.10.2021
Subjects
Antenna measurements
Antenna theory
Convergence
Measurement techniques
Mie scattering
Q-factor
Upper bound
Online AccessGet full text

Cover

More Information
Summary:An antenna's practical far-field distance can be estimated from the upper bound on the ratio of its gain to quality factor. This upper bound is an infinite series that can be truncated based on the desired accuracy. We investigate the convergence properties of this bounding series. We find that the number of terms required for convergence depends on the antenna's electrical radius in a way similar to the Wiscombe criterion used in Mie scattering theory. For typical experimental accuracy requirements, such convergence can significantly reduce the effective far-field distance.
ISSN:2474-2740
DOI:10.23919/AMTA52830.2021.9620559