ECE :: Communication Systems
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In standing wave pattern on a transmission line
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If the bandwidth is increased by 2, the γFM γAM (where γ is the ratio of SNR of output to SNR at input, FM is frequency modulation and AM is amplitude modulation) is increased by a factor of
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Frequency shift keying is used mostly in
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It is desired that transmission line and load should match for a range of frequencies. The best method is
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In a fascimile reproduction time to scan one line is 2 ms. If it has 4% blanking, the visible trace time is
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Consider the following statements
- The amplitude of an FM wave is constant
- FM is more immune to noise than AM
- FM broadcasts operate in upper VHF and UHF frequency ranges
- FM transmitting and receiving equipments are simpler as compared to AM transmitting and receiving equipments
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Signal to noise ratio of microphone is defined as the ratio of output when the sound pressure is __________ to the output in the absence of any sound signal.
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, the output y(t) will be 
