In this paper, a compact size free-space setup is proposed for the measurement of complex permittivity of granular materials. The horn antennas in the conventional setup are replaced by microstrip patch antennas which is a step toward system miniaturization. The experimental results obtained are in good agreement with those obtained with horn antennas.
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Use of microstrip patch antennas in grain permittivity measurement
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Conference Record - IEEE Instrumentation and Measurement Technology Conference
Proceedings of the 20th IEEE Information and Measurement Technology Conference