Temperature Variation Effect on a Rectangular Microstrip Patch Antenna

A novel hypothesis is proposed for the sensitivity of the Rectangular Microstrip Patch Antenna (RMPA) to temperature variations under ideal room manufactured temperature tolerance. This hypothetical model equation is validated while relating the resonating frequency, patch length and dielectric constant of the rectangular patch antenna to variations from the ideal room temperature. The study considered three different substrate materials as follows; Rogers RT/Duroid 5870, FR-4 substrate and Epsilam-10 ceramic-filled Teflon used to verify the model's temperature sensitivity for the rectangular patch antenna. Simulation results revealed discrepancy in ambient temperature with respect to the dimensions of the rectangular patch antenna, field radiation patterns, power pattern and generated radiation electric field plane. The study shows substrate with a lower dielectric constant and thermal coefficient is less sensitive to temperature variations.