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

Published

April 12, 2010

Author(s)

Perry F. Wilson

Abstract

Electronic devices designed for purposes other than transmitting and receiving electromagnetic fields nonetheless act as unintentional antennas. Measurement 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 (and not coherently) 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

Proc. of the 2010 Asia-Pacific Symposium on Electromagnetic Compatibility

Conference Dates

April 12-16, 2010

Conference Location

Beijing

Conference Title

2010 Asia-Pacific Symposium on Electromagnetic Compatibility

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/APEMC.2010.5475702

Keywords

antenna measurements, directivity, random sources, unintentional antennas

Citation

Wilson, P. (2010), Radiation Patterns of Unintentional Antennas: Estimates, Simulations, and Measurements, Proc. of the 2010 Asia-Pacific Symposium on Electromagnetic Compatibility, Beijing, -1, [online], https://doi.org/10.1109/APEMC.2010.5475702 (Accessed October 15, 2024)