713quiz1sol

713quiz1sol - 713 Quiz 1: April 9th, 2004 Circle the answer...

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713 Quiz 1: April 9th, 2004 Name:_______________________________ Circle the answer that is most correct. (i) An upward-pointing antenna on the roof of a home receives “direct broadcast” TV (at 14 GHz) from a satellite directly overhead. Which of the following propagation mechanisms is likely to be dominant? (a) direct propag ation (b) direct propagation plus Earth reflections (c) ionospheric reflection (d) groundwave propagation (e) tropospheric scatter propagation (ii) A conducting medium has permittivity , permeability , and conductivity S/m at the frequencies of interest for a communications system. Which of the terms below describes this medium? (a) nonlinear (b) inhomogeneous (c) nondispersive (d) lossless (e) none of the abo
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