In this study, a novel dual-port rectangular patch antenna is presented that provides triple-band operation across three distinct frequency subranges:15.25-15.6THz, 16.3-18.2THz, and 19.03-19. 7THz.The antenna functions within the frequency range of 15 THz to 20 THz. The findings of the research highlight the antenna's efficient operation of important parameters such as reflection coefficient, VSWR, bandwidth, and gain. Remarkably, the suggested antenna design has many uses. In addition to the previously specified performance metrics, simulated results show that the antenna remains isolated ablest an19dB over the entire operating frequency range, which is additional evidence of its reliable operation and compliance with conventional antenna standards.