Abstract
Antennas are used to transform the traveling signals into the electromagnetic waves in the free space. There are many types of the antennas using in the various areas. Microstrip patch antennas have been used for many applications such as mobile communications, radar applications, microwave imaging, satellite systems, remote sensing, radio frequency identifications, wireless systems, synthetic aperture radar, telemetry, aerospace, weather mapping and detecting etc. These applications operate at L, S, C, X and K microwave bands or combinations of these bands. In this study, a comprehensive study of the antenna terminology is presented and a compact dual-band antenna operating at the C-band and X-band is developed and analyzed. Defected Ground Structure techniques are used on the ground side and some other modification techniques are used on the patch side in order to obtain the resonant frequencies in these two bands. The FR4-epoxy material is chosen as a substrate for the designed patch antenna with dielectric constant of 4.5, and height of 1.6 mm. The antenna structure is optimized and simulated using High Frequency Structured Simulator program which uses the Finite Element Methods solver technique. A large number of the antenna parameters are obtained and explained at the result part of the study.
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