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Analysis of the Effect of Nearby Objects on the Performance of Passive Harmonic Tags

Wiedijk, H.J.W. (2025) Analysis of the Effect of Nearby Objects on the Performance of Passive Harmonic Tags.

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Full Text Status:Access to this publication is restricted
Embargo date:4 July 2027
Abstract:This study aims to give insight in the effect of proximate objects to harmonic tags for use in harmonic radar systems. Harmonic radar represents a specialized remote sensing technology that has eased the study of insect flight and behaviour, where traditional radar systems encounter difficulty in identifying small, rapidly moving objects at significant distances due to interference arising from ambient environmental reflections. One persistent challenge in deploying harmonic tags is the alteration of tag performance due to nearby objects. We employ both electromagnetic simulation and experimental validation using a tag designed to operate at 9.4 GHz. Simulations of the tag assess impedance characteristics and antenna gain at both the fundamental and second harmonic frequencies, while experimental measurements evaluate received harmonic power to determine total conversion efficiency and frequency shifts. Our results aim to quantify proximity effects and validate the feasibility of using simplified simulation models for predicting real-world tag behaviour.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
Link to this item:https://purl.utwente.nl/essays/107901
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