Alhalboosi, Hussein AliKurnaz, SeferShantaf, Ahmed Muhi2021-05-152021-05-1520209781728193526https://doi.org/10.1109/HORA49412.2020.9152877https://hdl.handle.net/20.500.12939/10952nd International Congress on Human-Computer Interaction, Optimization and Robotic Applications, HORA 2020 -- 26 June 2020 through 27 June 2020 -- -- 162106in wireless applications using the MSP antennas in many important application.This paper is introduces Double Hslot patch antenna three-band in C-Band. By using ANSOFT HFSS version 17.2 simulated and described The efficiency of the radiation including Return loss, antenna gain, radiation pattern, VSWR. The structure of this antenna is simpler than other antennas established to achieve three-band characteristics consisting of only a substrate, ground and coaxial feed line. My operate in C=band which in the field (4-8 GHz) and I obtain there frequency (4.01 GHz, 5.81 GHz and 6.55 GHz).the Radiating patch it falls on the Rogers RT/duroid 5880/dielectric constant 2.2 and thickens for it 1.5748mm taken to design a substrate. Coaxial feeding technology is used for feeding the fifteen-ohm antenna. The return loss raises of this antenna suggested (-27.13 dB at 4.01GHz,-21.78 dB at 5.81 GHz, and-13.32 dB at 6.55 GHz), the gain of 7.754 dB at 4.01GHz, 8.357dB at 5.81 GHz, and 7.232 dB at 6.55 GHz. At the same time. Machine simulated tests showing a VSWR value of less than two at C-band frequency range of 3.95-4.05 GHz, 5.75-5.88 GHz, and 6.5-6.61 GHz. © 2020 IEEE.eninfo:eu-repo/semantics/closedAccessC-BandHFSS Version 17.2Return LossConference Object10.1109/HORA49412.2020.91528772-s2.0-85089676100N/AWOS:000644404300018N/A