Microwave Link Or Line Of Sight Propagation

Microwaves

Line of sight propagation is

Microwave Oven

What do you understand by space wave propagation? Why is it known as line of sight propagation? Explain selective fading?

Microwaves are used for

The height of the antenna ( a ) limits the population covered by the transmission ( b ) limits the ground wave propagation ( c ) effectively uesd in line of sight communication

A : It is necessary for transmitting antenna must be at same height as that of receiving antenna for line of sight communition. B : EM waves of frequency beyond 40 MHz , propagate as space waves.

Plane microwaves are incident on a long slit having a width of 5.0 cm. Calculate the wavelength of the microwaves if the first diffraction minimum is formed at theta=30^@ .