Your cell phone operates at 1.9 GHz and transmits with an electric field strengt

Question

Your cell phone operates at 1.9 GHz and transmits with an electric field strength of 100 V/m. Assume air has a conductivity of 2 x 10-6 S/m, and a relative permittivity of Er-1 If the receiver in the cell tower can detect 100 mV/m, how far away can you still connect (in terms of m)? (Assume the only effect is attenuation in the signal due to distance; ie not reduced from isotropic radiation). An experiment was carried in which it was determined that at 50 Hz, the intrinsic impedance of a certain mediumm e 2 has a phase of 450, a skin depth 229 cm, assume -

Explanation / Answer

a)iron is most probable material that student is investigating

where skin depth of a iron is given where skin effect of any conducting material is defined as the skin effect

permiability =absoulte permiability=4*pi*10^-7

internsic impedance ratio is given

and the conducitvity of the material is iron is 10.1*10^-6 seimens/m

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