In this work, we study the current coupled to a simplified Unmanned Aerial Vehicle (UAV) model using a dual computational and experimental approach. The simplified surrogate structure reduced the computational burden and facilitated the experimental measurement of the coupled currents. For a practical system, a wide range of simulations and measurements must be performed to analyze the induced current variations with respect to properties of the incident excitation waveform, such as the frequency, angle of incidence, and polarization. To simplify this analysis, Characteristic Mode Analysis (CMA) was used to compute the eigen-currents of the UAV model and predict where and under which RF excitation conditions the coupled current is maximized. We verified these predictions using direct experimental measurement of the coupled currents. The presented simulations and measurements show the usefulness of CMA for studying electromagnetic coupling to practical systems.


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory


This work was supported in part by office of naval research (ONR) under Grant N00014-17-1-2932 and Grant N00014-17-1-3016, and in part by the University of Missouri--Kansas City, School of Graduate Studies Research Award.

Keywords and Phrases

Characteristic Mode Analysis (CMA); Current Measurement; Electromagnetic Coupling; Electromagnetic Interference; Unmanned Aerial Vehicles (UAVs)

International Standard Serial Number (ISSN)


Document Type

Article - Journal

Document Version

Final Version

File Type





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Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Publication Date

05 Jan 2022