Analysis of Artificial Dielectric Material Effect on The Performance of Microstrip Antennas

In this paper artificial dielectric material is used to make microstrip antennas with a resonance frequency of 2.4 GHz. Artificial dielectric materials are produced by the modification of natural dielectrics present in conventional antennas. Modifications were made in 3 ways and antenna parameter changes were observed. The first modification is to vary the thickness of the substrate from 1.6 mm to 11.2 mm. At a thickness of 6.4 m, the results are obtained quite well so that it can be used as a reference for further simulation. The second modification is by inserting a cylindrical conductor on the substrate, with a variation of the cylinder conductor being inserted from 4 to 12. The results obtained are 4 conductors that produce the best parameters of the antenna, including resonant frequency, amplification, VSWR, radiation pattern and S11. The last modification is to vary the diameter of the inserted conductor from 1 mm to 1.5 mm. As with previous simulations, any change in the conductor diameter is observed for the parameters of the antenna. Results from the 1.2 mm diameter conductor are 2.4 GHz resonance frequency, 7.67 dB gain, -46.13 dB S11, 1.03 VSWR and 125 MHz bandwidth. The results of this study show that all material changes made affect all parameters of the antenna, such as decreasing frequency, larger or smaller bandwidth, changes in the direction of the pattern of radiation, VSWR values, and also S11.