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In the evolving landscape of terahertz communication, the behavior ofchannels within indoor environments, particularly through glass doors, hasgarnered significant attention. This paper comprehensively investigatesterahertz channel performance under such conditions, employing a measurementsetup operational between 113 and 170 GHz. Analyzing scenarios frequentlyinduced by human activity and environmental factors, like door movements, weestablished a comprehensive theoretical model. This model seamlessly integratestransmission, reflection, absorption, and diffraction mechanisms, leveragingthe Fresnel formula, multi-layer transmission paradigm, and knife-edgediffraction theory. Our experimental results and theoretical predictionsharmoniously align, revealing intricate dependencies, such as increased powerloss at higher frequencies and larger incident angles. Furthermore, doorinteractions, whether opening or oscillations, significantly impact theterahertz channel. Notably, door edges lead to a power blockage surpassing thetransmission loss of the glass itself but remaining inferior to metallic handleinterferences. This paper's insights are pivotal for the design and fabricationof terahertz communication systems within indoor settings, pushing theboundaries of efficient and reliable communication.

Experimental and Theoretical Exploration of Terahertz Channel Performance through Glass Doors