부산대학교 도서관

A two-element array of miniaturized printed radiators for vehicular communication has been presented in this article. The IEEE $\boldsymbol{802.11 p}$ standard specifies that the operational range is within the 5.85 to 5.925 GHz frequency. An 18% miniaturized antenna has been derived from a concentric-ring-based architecture, where the outside ring is directly excited while the core circle is stimulated parasitically. Subsequently, four bow-tie-shaped structures are carved from the outside circles to augment the antenna gain. Moreover, a cross-rectangular slotted structure has been precisely carved from the parasitic circle to achieve resonance of the structure at the intended frequency. The use of the Wilkinson power divider is applied in the design of the feed network of an array to get a significant degree of isolation. The development of antennas in CST Microwave Studio involves the usage of a single-layer PCB made of FR-4 laminate material with a relative permittivity of 4.4. The antenna and the array provide a gain of 6.75 and 10.00 dBi, respectively, and exhibit bandwidth coverage exceeding 100%. Both antennas exhibit a low amount of cross-polarization along the primary beam direction. Both antennas exhibit significant radiation levels and have acceptable aperture efficiencies, respectively. Due to its minimum correction factor values, the antenna exhibits a reduced electromagnetic interference (EMI) and electromagnetic compatibility (EMC) impact. Both antennas are viable options for vehicle applications.