The average power of a sinusoidal voltage signal $v(t) = A \cos(\omega t + \phi)$ is given by $P_{avg} = \frac{A^2}{2R}$. In typical communication systems and when resistance is not specified, we assume $R = 1 \text{ ohm}$. For an angle-modulated signal, the amplitude remains constant.
Consider an angle-modulated signal $x(t) = 6 \cos(2\pi \times 10^6 t + 2 \sin(8000 \pi t)) V$ The average power of $x(t)$ is
Asked in GS&EI ElectEngg 14 2024 1601 2025 · Topic: Wave Motion (Energy and Power Transmission by Waves: Intensity)
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