THz Channel Measurement for Different Obstacles

With the development of the next generation communication system, the frequency band of the communication system gradually develops to the high-frequency band. And THz band is becoming the key technology of the next generation communication system. Therefore, the research on the THz band becomes more and more important. This paper studied different obstacles to the THz signal in the process of propagation. The main work of this paper is to divide the measured obstacles into three categories according to their shapes: small plane obstacles similar to human hands, large plane obstacles, and the head model. The effects of the thickness, area, and shape of obstacles on signal propagation are analyzed. The measurement results of the small plane obstacles and large plane obstacles show that thicker obstacles with the larger areas will increase the attenuation of the THz signal. The measurement result of the head model shows that different positions of the human head will cause different attenuation at the THz band, and the signal intensity at a certain position is greater than Los. Because the knife-edge diffraction produces other wave sources, which are superimposed with the 0th wave to enhance the strength of the signal.