Process for constructing the metamaterials and studying its advancement in microwave circuits

Abstract

Applying New Structure, Layout And The speculation and invention of Left-Handed Meta Material (LH MTM) has sparked the interest of many researchers globally. This material is said to have simultaneous negative parameters or double negative parameters (DNG Parameters) of the permittivity and permeability that led to the reversal of multiple theories and laws. Besides, it has the ability to improve the gain of antenna due to its focusing effect from its negative refractive index (NRI) characteristics. Nowadays, conventional microstrip antennas have low gain and directivity compared to other antennas available in the market nowadays. However, this type of antenna is still being used due to its ease of fabrication, light weight characteristics, just to name a few. Therefore, as a mean to make this type of antenna more worthwhile, the integration of LH MTM to this type of antennas was studied through simulations and experiments to prove the hypothesis of the focusing effect. As of the structure design, the combination of the Square Rectangular Split Ring and the Thin Wire Structure was used for fabrication purposes on an FR-4 Board using the Wet Etching Technique. From the simulation done, the gain of the antenna had increased 1.2 dB. This has proven that the focusing effect of the LH MTM really enhance the gain of the antenna. On the other hand, the Return Loss (S11) was improved by 9.62 dB and 12.29 dB in the simulation. Therefore, we could also conclude that LH MTM also contributes to the betterment of the matching of the antenna. Lastly, more alternative designs of LH MTM should be explored in the future and a parameter study should be done to further understand this peculiar LH MTM.