Abstract
Narrow band is the major inconvenient of the microstrip antenna. However, various multiband techniques are proposed towards several applications. A simple configuration of the rectangular microstrip antenna allows operating a system of satellite communication in two bands. The configuration consists of a single radiant element and substrate with low dielectric constant. The antenna is fed by a micro-strip line attached in the corner of the patch. This antenna covers two bands, the K and Ku bands, simultaneously. With the same parameters as simple antenna, other shapes are compared with rectangular array antenna, to improve the performances of the antenna and vary their operating frequencies. The designated configurations of the antenna arrays contain 2, 4 and 8 radiating elements.
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