Abstract
This paper presents a compact and low cost system with rectangular microstrip patch antenna that can be used as a sensor for real time determination of the microwave properties of the agriculture land. Here, the rectangular microstrip patch antenna has been designed using ROGERS RT/ duroid 5880 (tm) for resonance frequency of the dry loamy soil. The dielectric constant of the soil samples with different % of moisture have been analyzed and a model has been proposed. It is interesting to observe that calculated dielectric constant of soil increases with increase in the % of the moisture in the soil samples and these variations have been due to the high dielectric constant of the water content in moist soil. By using the determined resonance frequency shift or dielectric constant of the sample, the suitable crops can be suggested.
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