1.Calculate the signal power that must be coupled from the antenna into the receiver in a cell phone to achieve a signal to-noise ratio of 10 dB, given that the center frequency is 880 MHz, the noise bandwidth is 30 kHz, the amplifier noise factor is F = 4, and the ambient temperature is 290°K.
2. For a blackbody at a temperature of 300°K, calculate the frequency at which the electromagnetic radiation spectrum will be peaked.