Question: Consider a communication satellite (30GHz) in a geosynchronous orbit located at 37000km above the equator. The atmosphere is 15km thick. Assume plane wave propagation

Consider a communication satellite (30GHz) in a geosynchronous orbit located at 37000km above the equator.

Consider a communication satellite (30GHz) in a geosynchronous orbit located at 37000km above the equator. The atmosphere is 15km thick. Assume plane wave propagation and free space (o,) above the atmosphere. For the atmosphere, , = 1.05, r = 1, and o = 10-6S/m. Calculate : (a) Phase velocity in air & in free space. (b) Attenuation & phase constants in air & in free space. (c) Propagation constant in air & in free space. (d) Intrinsic impedance in free space & in air. (e) If the minimum electric field intensity needed for a receiver is 10-2V/m, what should be the minimum electric field amplitude at the transmitter? (A communication satellite (located in free space) receives signal from a transmitter at earth and redirects that signal to a receiver at earth.) Hints: Check the loss tangent and decide which equations will be applicable.

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