NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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.

PUBLICATIONS

Radiation Patterns of Unintentional Antennas: Estimates, Simulations, and Measurements

Published

Author(s)

Perry F. Wilson

Abstract

Electronic devices designed for purposes other than transmitting and receiving electromagnetic fields nonetheless act as unintentional antennas. Measurements methods are needed to characterize these antennas for electromagnetic compatibility tests; however, the rigor of precision antenna measurements is typically too costly and time consuming for electromagnetic compatibility applications. Alternate approaches are needed. This paper presents analytical estimates for the directivity of unintentional antennas based on the assumption that unintentional antennas will only randomly excite the available propagating spherical modes at a given frequency. This directivity estimate is then compared to simulated and measured data. Good agreement is shown. Directivity estimates combined with simple total radiated power measurements represent a useful alternative to direct antenna measurements for electromagnetic compatibility tests.
Proceedings Title
Antenna Measurements Techniques Association
Conference Dates
October 31-November 4, 2005
Conference Location
Newport, RI
Pub Type
Conferences

Keywords

antenna measurements, directivity, electromagnetic compatibility, unintentional antennas
Electromagnetics

Citation

Wilson, P. (2005), Radiation Patterns of Unintentional Antennas: Estimates, Simulations, and Measurements, Antenna Measurements Techniques Association, Newport, RI (Accessed October 22, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created November 1, 2005, Updated February 19, 2017
Was this page helpful?