Abstarct: In this research, the design and optimization of a broadband omnidirectional antenna with a tilted radiation pattern within the 18–40 GHz frequency band have been investigated. The primary objective is to achieve reliable omnidirectional coverage while controlling the direction of maximum radiation to a desired angle, and to improve impedance matching across a wide bandwidth. To this end, a suitable structure was employed, and parametric adjustments were applied to the antenna geometry to optimize the Voltage Standing Wave Ratio (VSWR) and enhance radiation characteristics. Simulation results demonstrate that the proposed antenna maintains a VSWR of less than 2 across the entire target frequency band, indicating satisfactory impedance matching. Furthermore, the antenna gain ranges from 6 to 7.8 dBi. While maintaining its quasi-omnidirectional nature, the radiation pattern exhibits a controlled tilt in the elevation plane. This characteristic makes the antenna suitable for applications such as radar systems, microwave communications, and signal monitoring in 3D environments. In this thesis, various methods for beam tilting in biconical antennas are reviewed, and the findings of the baxse report are analyzed. The results indicate that the proposed single-port antenna, with its simple structure, provides acceptable VSWR and gain while offering radiation pattern tilt capability, making it suitable for radar and communication applications.