Design and Development of Multiband Omni-Directional Antenna

This paper shows how Multiband Omni-directional antennas have emerged as a vital solution to meet the diverse spectrum demands of modern applications. Highlighting its importance in enabling reliable communication and broadcasting in various scenarios. It emphasizes the necessity of maintaining a consistent radiation pattern across multiple frequency bands, requiring a delicate balance between antenna element selection and structural optimization. The implementation in the UHF/SHF band with various antenna-specific applications. It is presented a quick and effective technique for designing Rectangular Microstrip Patch antenna with Lumped feeding technique for three different bands i.e., 698-960MHz, 1710-2100MHz and 3300-4000MHz using Rogers RO4350B substrate having dielectric constant of 3.66 with the height of 20mil which is maintaining acceptable return loss greater than −10dB and gain greater than 3dB over the respective bands. By using ANSYS HFSS simulation software the design and simulation are completed. This paper outlines the key objectives, methodologies and considerations involved in designing an multiband omni-directional rectangular patch antenna.