5 5 A 50 000 W Am Broadcast Transmitter Is Being Evaluated By Means Of A Two Tone Test The Trans Mitter Is Connected T 1 (20.08 KiB) Viewed 56 times
5 5 A 50 000 W Am Broadcast Transmitter Is Being Evaluated By Means Of A Two Tone Test The Trans Mitter Is Connected T 2 (15.4 KiB) Viewed 56 times
5-5 A 50,000-W AM broadcast transmitter is being evaluated by means of a two-tone test. The trans- mitter is connected to a 50-22 load, and m(t) = A, cos Wit+ A, cos 2011, where fi = 500 Hz. Assume that a perfect AM signal is generated. (a) Evaluate the complex envelope for the AM signal in terms of A, and . (b) Determine the value of A, for 90% modulation. (c) Find the values for the peak current and average current into the 50-22 load for the 90% mod- ulation case.
5-23 A modulated signal is described by the equation $(t) = 10 cos [(26 X 10%)+ 10 cos (27 X 10ºr)] Find each of the following: (a) Percentage of AM. (b) Normalized power of the modulated signal.
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