The Optimization of 2.4 GHz Array Antennas

Starting from a simple antenna constructed to function at 2.4 GHz, this paper presents the optimization process of its structure in order to improve its performances. After considering modifying the geometry for achieving the purpose of increasing the bandwidth or increasing the gain of a single antenna, the structure is used in the construction of array antennas with the same bandwidth but higher gain. Different positioning for the antennas in the array is considered, and the results are compared. Because the distance between the antennas is also an important factor, we consider also determining its influence on the analyzed structure. The results show that a smaller distance between the antennas will lead to a better gain of the structure. Rounding the corners is not significantly influence S parameters or gain, while chamfering them leads to a higher value resonance frequency and smaller radiation. As a general conclusion, creating arrays will lead to a higher gain antenna, but its dimensions must also be taken into account