Novel eye shaped flexible microstrip patch antenna design employing mylar as substrate for defence systems, earth exploration-satellite, radio astronomy and radio determination applications

This paper demonstrates the design and analysis of Microstrip patch antenna design employing Mylar as substrate material, having thickness of 0.1 mm and dielectric constant (ετ) of 3.4. The patch and ground are made up of Copper material and substrate of thickness 0.5mm has been stacked below the ground to improve the antenna parameters such as return loss, directivity and bandwidth. The ground has been reduced as well as slotted to increase the bandwidth and gain. The design and simulation of antenna has been carried out using Computer Simulation Technology (CST) Microwave studio (2014). The proposed antenna design has been analyzed in terms of resonant frequency, return loss (S11), VSWR, gain (dB) and directivity (dBi). It has been observed that the designed antenna is resonant at 8.32GHz with an impedance bandwidth of 50Ω covering the frequency range from 8.21GHz — 8.42GHz. The designed antenna has return loss (S11) magnitude of 60.73 dB at resonant frequency of 8.32GHz. The antenna has gain of 5.21dB and directivity of 5.647 dBi. The proposed antenna can be used for Defense systems (Harmonized military band for satellite operation) (8.21GHz-8.4GHz), Earth exploration-satellite (8.21GHz-8.4GHz), Point-to-point (8.21GHz-8.4GHz), Radio astronomy (8.21GHz-8.4GHz), Radio determination (8.21GHz-8.4GHz) applications.