Design and optimization of microstrip swastik patch antenna for space applications

This paper proposes a three stage optimized design of microstrip swastik patch antenna for wireless communications. A FR4 epoxy substrate of dielectric permittivity 4.4 and loss tangent .0002 is used. The design uses coaxial feeding technique. The simulation software used is HFSS. Each of the design is analyzed and then compared at its best resonant frequencies in terms of return loss, bandwidth, radiation pattern, gain, directivity, VSWR and field patterns. The initially proposed design attains a maximum gain of 4.7dBi at 4.79 GHz with a bandwidth of 25.4 MHz. The first variant attains a peak gain of 3.3 dBi at 4.79 GHz and a 60.7 MHz bandwidth. The two designs, thus, can be utilized for fixed satellite applications. The final variant has a maximum gain of 13.3dBi at 2.63 GHz with a bandwidth of 10 MHz to be used for fixed satellite, mobile except aeronautical mobile and broadcast satellite applications.