An Antenna with High Gain Applied in Grain Moisture’s Measurement

Abstract:

When depoting grain for storage, the thickness of grain mass is a vital issue for the purpose of measuring its moisture content. The measurement method is focused on microwave technology, which is to collect the electromagnetic variation data of the amplitude and phase shift from the mass.The proper thickness for the mass is about 5cm and the width is less than 1m. An antenna with a high gain and a saucer-shaped pattern is in great need. This paper provides a 8-element structured antenna array with a gain of over 17dBi, especially with a particular pattern of butterfly shape.The high gain helps to penetrate a thick grain layer, and the butterfly shaped pattern is beneficial to scan more sampling sites from the same facet.The simulation results from HFSS 14.0 are also shown in this paper. When the antenna is hanged over the grain surface at a distance,it is capable to gather more data on moisture content for a wide range of the grain mass. This antenna model really fits the needs of warehousing entry for grain.

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 391-394
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.391
• Online since: September 2014
• Authors: Hong Wei Wang*, Pei Liu
• Keywords: Antenna, Butterfly Pattern, High Gain, Moisture

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