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Jakobsen, Kaj Bjarne
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
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Publications (5/5 displayed)
- 2021Electrical Conductivity Measurement on Metallic Materials With a Cylindrical Resonatorcitations
- 2009Small and Robust Antennas for Concrete Embedded Sensorscitations
- 2006Envelope correlation in (N, N) MIMO antenna array from scattering parameters
- 2005One-turn stub-loaded loop patch antenna on a small ground plane
- 2004Stub loaded low profile loop patch antennna on a finite ground plane
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document
Small and Robust Antennas for Concrete Embedded Sensors
Abstract
We study a small antenna for a structural health monitoring sensor. The sensor is cast into concrete. The sensor monitors the humidity and temperature of the concrete, which is a harsh environment. From measured material parameters of the concrete we estimate the signal loss and the antenna detuning. We find that the antenna is considerably detuned due to the high dielectric constant of concrete. The attenuation of the transmitted signal is due to dielectric losses in the concrete.