WIDEBAND ANTENNA FOR SHIP RADAR USING DGS
Keywords:Microstrip Antenna (MA), Wideband, DGS (Defected Ground Structure)
The research aims to design a wideband antenna operating within the S-Band frequency range. The antenna is fabricated using PEC material with a height of 0.035 mm, an FR-4 substrate with a height of 1.6 mm, and PEC material for the ground plane with a height of 0.035 mm. The antenna enumeration system utilizes an insert feeding method. The substrate specification specifies an epsilon value of 4.3. Simulation results reveal a return loss of -12.05 at a frequency of 2.2 GHz, and the antenna operates over a frequency range spanning from 1.68 GHz to 2.4 GHz. This antenna demonstrates a standing wave ratio of 1.67 and a total efficiency of -0.408. Regarding radiation patterns, the main lobe magnitude measures 3.34 dBi, with a main lobe direction of 178 degrees and an angular width (3 dB) of 81 degrees. This antenna boasts an innovative design incorporating a Defected Ground Structure.