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Unformatted text preview: demodulated using the available equipment. (b) The frequency and bandwidth values in this problem are close to the ones used in commercial AM. What is the problem with designing an AM demodulator matched to f c = 1 MHz? 3. A signal with bandwidth W = 4 kHz, is transmitted using indirect FM with f c = 1 MHz and Δ f = 12 kHz. If the initial frequency deviation < 100 Hz and the (initial carrier frequency) f c 1 = 10 kHz, how many doublers will be needed to achieve the desired output parameters? Draw the block diagram of the sytem indicating the value and location of the local oscillator such that no frequency exceeds 10 MHz. 1...
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- Spring '09
- Electrical Engineering