A Temporal Millimeter Wave Propagation Model for Tunnels Using Ray Frustum Techniques and FFT

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="172924.fig.002a" src="https://static.hindawi.com/articles/ijap/volume-2014/172924/figures/172924.fig.002a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Source spectrum</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="172924.fig.002b" src="https://static.hindawi.com/articles/ijap/volume-2014/172924/figures/172924.fig.002b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Low pass equivalent signal</td></tr></table></td></tr></table>

<table>Low pass equivalent signal spectrum of the transmitting antenna.</table>

International Journal of Antennas and Propagation

fig2

Figure 2

Figure 2: A Temporal Millimeter Wave Propagation Model for Tunnels Using Ray Frustum Techniques and FFT 