pla solve my last 3 question.
1)
A 1-MHz, 40-V peak carrier is modulated by a 5-kHz intelligence signal so that
m = 0.7. This AM signal is fed to a 50-D antenna. Calculate the power of each
spectral component fed to the antenna.
9) A 50-V rms carrier is modulated by a square wave. If only the first four
harmonics are considered and V = 20 V, calculate meff.
3)
2)
persedia
Answers
Answer:
A 1-MHz, 40-V peak carrier is modulated by a 5-kHz intelligence signal so that m = 0.7. This AM signal is fed to a 50-D antenna. Calculate the power of each spectral component fed to the antenna. 9) A 50-V rms carrier is modulated by a square wave. If only the first four harmonics are considered and V = 20 V, calculate meff. An AM transmitter at 27 MHz develops 10 W of carrier power into a 50-12 load. It is modulated by a 2-kHz sine wave between 20 and 90 percent modulation. Determine: (a) Component frequencies in the AM signal. (b) Maximum and minimum waveform voltage of the AM signal at 20 percent and 90 percent modulation. (C) Sideband signal voltage and power at 20 percent and 90 percent modulation. (d) Load current at 20 percent and 90 percent modulation.