| Popis: |
Microstrip antennas are vital components in the military X-Band (6.2:10.9) GHz systems to achieve high performance for these systems. In this paper hybrid shapes of slots are introduced as, International Telecommunication Conference 2021 Air Defense College (ITC-2021 ADC) shape slots in a reference patch antenna (RPA) using HFSS simulator for inter telecommunication military system applications. The proposed structures introduce a RPA without slots of $\text{RL} =- 19.1$ at 7.96 GHz and three varieties of shape slot in the RPA to improve the performance of antenna such as return loss (IRL). The three varieties are the ITC, the ITC-2021 and the ITC-2021 ADC shape slots which resulted in $\text{RL}=-24.48$ , −29.76 and −25.66 at 7.97, 8.08 and 7.97 GHz respectively. The improved return loss ratio (IRLR) is the ratio of the RL between slotted patch and the RPA which indicates the decrease of S 11 and hence improve the performance of antenna at the operating frequency (f). The three varieties introduce IRLR of 1.28, 4.12 and 2.03 at $\mathrm{f}=7.96,\ 8.08$ and 7.91 GHz for the different varieties respectively. |
