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1. A carrier wave Vc(t) = 10 Sin (2π × 30 × 106t) is amplitude modulated by an audio signal Vm(t) = 8 Sin[3(2π × 1000t)]
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1. A carrier wave Vc(t) = 10 Sin (2π × 30 × 106t) is amplitude modulated by an audio signal Vm(t) = 8 Sin[3(2π × 1000t)]
1. A carrier wave Vc(t) = 10 Sin (2π × 30 × 106t) is amplitude modulated by an audio signal Vm(t) = 8 Sin[3(2π × 1000t)] and transmitted using an antenna with resistance 1000. (a) Find the modulation index (b) Determine the upper and lower sidebands. (c) Sketch the complete spectrum of the modulated wave. (d) Estimate the total power in the sidebands. (e) Find the total transmitted power [1 mark] [2 marks] [2 marks] [1 mark] [1 mark]