Please answer all parts
b Suppose an RC envelope detector circuit is used to demodulate an AM signal having a carrier frequency of 500 KHz and a message signal with a bandwidth of 10 KHz. What should be a reasonably good choice for the time constant,RC?
Sketch the block diagram of a circuit that can be used to change the carrier frequency of the above modulated waveform to 100 KHz. Also,please indicate the specification of each component used in your block diagram.