Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

Published

Author(s)

Alex Yuffa, Marc Valdez, Benoit Derat

Abstract

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 far-field 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.
Proceedings Title
Proc. Antenna Meas. Techn. Assoc.
Conference Dates
October 24-29, 2021
Conference Location
Daytona Beach, FL, US
Conference Title
43rd Annual Meeting and Symposium of the Antenna Measurement Techniques Association (AMTA)

Keywords

antenna, far field distance, Wiscombe, gain, quality factor, convergence

Citation

Yuffa, A. , Valdez, M. and Derat, B. (2021), On Convergence of the Upper Bound on the Ratio of Gain to Quality Factor, Proc. Antenna Meas. Techn. Assoc., Daytona Beach, FL, US, [online], https://doi.org/10.23919/AMTA52830.2021.9620559, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932757 (Accessed October 31, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created December 6, 2021, Updated November 29, 2022