A Low Profile Omni-directional Antenna using Modified Split-ring Slot as a Radiator for UHF Band Applications

In this paper, a low-profile omni-directional antenna has been suggested for UHF communication. The proposed antenna consists of a radiating split ring slot array (SRS-A) for achieving an omnidirectional property at a resonant frequency of 385 MHz. To provide an excitation to these SRS-A, a 1:8 power divider has been designed for desired radiation characteristics. The overall size of the low profile antenna is 460 × 460 × 1 (mm)
³
. The purpose of designing the proposed antenna is to achieve an omni-directional radiation property with high radiation efficiency and gain of 2.50 dB while maintaining a low profile. The proposed antenna is suitable for the UHF band wireless communication.