What is the intermediate frequency (IF) of your superheterodyne receiver? What i

Question

What is the intermediate frequency (IF) of your superheterodyne receiver?

What is the bandwidth of an AM signal?

What is the envelope of an AM signal?

A standard AM broadcast station is allowed to transmit modulating frequencies up to 5kHz. If the AM station is transmitting on a frequency of 980 kHz, compute the maximum and minimum upper and lower sidebands and the total bandwidth occupied by the AM station.

An AM transmitter has a carrier power of 30 W. The percentage of modulation is 85%. Calculate the following: (a)the total power. (b)the power in one sideband.

Explanation / Answer

1) Here we use 2 frequency ranges ,first one and second one

a)first one ->10M.7 MHz

b)second one->470KHz

2)The bandwidth of an AM signal will be 40KHz

3) envelope detectors are electronic circuits whch takes high-frequency signals as input and provides an output which is the envelope of the original signal.

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