In this paper, a conformal Printed Log periodic microstrip antenna (LPMA) is proposed for sub-6 GHz (triple band) applications. This antenna consists of twelve rectangular patch elements along with microstrip feed line and those are fabricated on a polyimide substrate with dielectric constant value of 3.3. The adaptability of the antenna is shown by bending the LPMA horizontally and vertically across the angle of 300, 450 and 600. The execution of the antenna is analysed in terms of its return loss, Gain, H-E plane patterns and efficiency. The designed antenna is capable of operating with the resonant frequencies 2.4 GHz, 4 GHz and 5.9 GHz with the gain of 8.2, 8.9&7.5 dBi respectively, providing voltage standing wave ratio (VSWR) < 2. Using CST software the designed antenna designed, simulated and the estimated results are in great concurrence with the simulation results.
There is a need of low profile and multiband antennas in various fields of wireless communication lower band applications. Suitable gain with higher data rates for future communication modules in compact range is most challenging for design engineers. In this paper, Log Periodic Dipole Array antenna was designed and proposed for frequency range from 900 MHz to 2.6 GHz, operating frequency for the proposed antenna is 0.9 GHz (GSM), 2.1 GHz (PCS) and 2.4 GHz Industry standard Medical (ISM) and Wi-Fi applications. The modelled antenna constructed on FR4 substrate with height of 1.6mm, and analysed with electromagnetic simulation software like Magus, CST (Computer Simulation Technology) and HFSS (High Frequency structure simulator) tools. The proposed antenna has advantages like wideband, simple design, antenna results indicate the reflection coefficient value below -10dB for whole band from 900 MHz to 2600 MHz. The proposed antenna showing overall gain of 6 dB. Several antenna parameters are evaluated in Finite Element Method (FEM) and Finite Difference Time Domain (FDTD) and provided comparative analysis in this work.
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