aspg-2-3322-1791419319 20261008002839 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Journal of Cybersecurity and Information Management JCIM 2769-7851 2690-6775 2025 15 2 Ammar Nadal Shareef College of Basic Education, Al-Muthanna University, Samawah, Iraq Amer Basim Shaalan College Of Science, Al-Karkh University, Baghdad, Iraq Hayder Salah Naeem College of Basic Education, Al-Muthanna University, Samawah, Iraq Mustafa Albdairi Çankaya University, Department of Civil Engineering, Yukarıyurtçu Mah.Mimar Sinan Cad. No: 4, Etimesgut, 06790 Ankara, Turkey The study, called "A Novel Design of a Quadratic Koch Fractal Nanoantenna," aims to create and study a brand-new microstrip nanoantenna that works in the THz range, specifically between 100 and 130 THz, and can handle a wide range of optical communication frequencies. We examine two unique geometries, specifically the quadratic Koch fractal patch (QKF) and the complementary quadratic Koch fractal patch (CQKF), utilizing two different dielectric materials as substrates. We employ silicon (Si) dielectric material because of its high dielectric constant (11.9), while we use the silicon dioxide (SiO2) dielectric material because of its dielectric constant (4). The feeding method employed to stimulate these nanoantennas has been waveguide feed at a frequency of 50 Ω.We have employed a software simulator, available for purchase as CST STUDIO SUITE, to achieve the established objectives for assessing the performance of each proposed nanoantenna. 2025 78 86 3322 https://creativecommons.org/licenses/by/4.0/ 10.54216/JCIM.150207 https://www.americaspg.com/journal/2/article/3322 https://www.americaspg.com/storage/51732091581.pdf