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Modelling and Analysis of Power Distribution of Electromagnetic Waves on Plane Surfaces Using Lock-in IR Thermography

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Abstract

The electric field distribution (magnitude only) near a radiating source (antenna) can be easily determined using infrared thermography. A thin screen (made of carbon fiber reinforced polymers) is placed in front of a microwave source. The electromagnetic waves impinging on the screen are partially absorbed, resulting in temperature rise of the screen. This temperature rise is monitored by an infrared camera. The temperature distribution thus observed is mapped to the electric field strength (magnitude of electric field) of the electromagnetic waves. Points on the screen where the temperature rise is low correspond to weak electromagnetic fields whereas points with high temperature rise correspond to strong electromagnetic fields. In this paper electro-thermal modelling is done so as to obtain the temperature distribution over the screen, when an electromagnetic field is incident on it. This model can conversely be used for finding electromagnetic field distributions from IR thermal images.

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Authors and Affiliations

  1. Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi, 110016, India

    Khalid Muzaffar, Krishnendu Chatterjee, Lalat Indu Giri & Shiban Koul

  2. School of Engineering and Applied Sciences, Bennet University, Greater Noida, 201310, India

    Suneet Tuli

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  1. Khalid Muzaffar
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  2. Krishnendu Chatterjee
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  3. Lalat Indu Giri
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  4. Shiban Koul
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  5. Suneet Tuli
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Correspondence to Khalid Muzaffar.

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Muzaffar, K., Chatterjee, K., Giri, L.I. et al. Modelling and Analysis of Power Distribution of Electromagnetic Waves on Plane Surfaces Using Lock-in IR Thermography. J Nondestruct Eval 36, 60 (2017). https://doi.org/10.1007/s10921-017-0439-z

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  • DOI: https://doi.org/10.1007/s10921-017-0439-z

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