1.

What is the alias produced when a signal of 15 MHz is sampled at a rate of 28 MHz?(a) 10MHz(b) 11MHz(c) 12MHz(d) 13MHzThis question was addressed to me in a national level competition.The query is from Data Conversion in chapter Digital Communication Techniques of Avionics

Answer»

Right choice is (d) 13MHZ

For explanation I would say: Frequency of alias SIGNAL = fa = fs – FM = 28-15 = 13MHz.



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