Modelo Dos Rayos/Índice/Ecuaciones 3.49-3.53

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Ecuaciones 3.49- 3.53

Equations 3.49-3.53 Note that equation (3.8) may be simplified whenever $sin({\theta }_{\mathrm{\Delta }}/2)\approx {\theta }_{\mathrm{\Delta }}/2$. This occurs when ${\theta }_{\mathrm{\Delta }}/2$ is less than 0.3 radian. Using equations (3.41) and (3.42) $\frac{{\theta }_{\mathrm{\Delta }}}{2}\approx \frac{2\pi h_t{h}_r}{\lambda d}<0.3rad(3.49)$ which implies that $d>\frac{20\pi h_t{h}_r}{3\lambda }\approx \frac{20h_t{h}_r}{\lambda }(3.50)$ Thus as long as d satisfies (3.50), the received E-field can be approximated as