# unit2HW Electronic Communications

May 5th, 2015
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If a carrier is amplitude modulated what causes the sideband frequencies? The non-linear mixing of the carrier and intelligence frequencies. â€¨ 4. What determines the bandwidth of emission for an AM transmission? It is twice the frequency of the highest audio frequency transmitted. The upper sideband is fc +FM where fc is the carrier frequency and FM is the modulation (audio) frequency .

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unit2HWMatthew VaughnMr. KoffiElectronic Communications01/15/2015Unit 2 Assignment 1: Amplitude ModulationChapter 2 (pp. 111-113)2. A 1500 kHz carrier and a 2 kHz intelligence signal are combined in a non-linear device. List all the frequency components produced. 1498, 1500, and 1520KHz3. If a carrier is amplitude modulated what causes the sideband frequencies? The non-linear mixing of the carrier and intelligence frequencies. ? 4. What determines the bandwidth of emission for an AM transmission? It is twice the frequency of the highest audio frequency transmitted. The upper sideband is fc +FM where fc is the carrier frequency and FM is the modulation (audio) frequency .The lower sideband is fc - FM. The total bandwidth is 2*FM 5. Explain the difference between a sideband and a side frequency. A sideband carries the modulation or "information". in old fashioned AM and FM transm

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