Microstrip Patch Antenna with Band Rejection Design for V2X Technology based on 5G Networks

The design of a new microstrip antenna with the rejection possibility for 5G wireless networks is described in the paper. The antenna was calculated to have small size and low profile, providing the ease of manufacturing. Its total size is 13 mm × 13 mm. It is made on Rogers RO4835 substrate with a thickness of 0.508 mm. The radiating element consists of one big circle, 12 small circles around it and three L-shaped slots that were cut out from the main circle. This construction provides good matching in three not overlapping subbands and forms two rejection bands between them for ensuring electromagnetic compatibility with the existing satellite services in the total band 25.25 – 29.5 GHz. The radiation pattern is wide and the realized gain is around 7 dB. The antenna can be easily combined in an array to increase the gain and control the direction of the lobes.