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dandeliondrea
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Modulation is the process of impressing an information bearing signal to a carrier for effective transmission over a long distance. example Am and FM used in radio transmission
Analogue baseband signals of 0-4000Hz are shifted to 60-64Khz range.
Communication systems often do not carry signals in baseband (with the exception of local loop)
Wavelength of a radio wave in free space is the speed of light/the frequency.
That means a 4KHz voice signal has a wave length of 75000m (300000/4). We can't possibly make an antenna to receive such signals
Why an antenna cannot receive analogue baseband signal of 0-4000Hz?
I heard we need a very large antenna to receive analogue baseband signal of 0-4000Hz? why?
Analogue baseband signals of 0-4000Hz are shifted to 60-64Khz range.
Communication systems often do not carry signals in baseband (with the exception of local loop)
Wavelength of a radio wave in free space is the speed of light/the frequency.
That means a 4KHz voice signal has a wave length of 75000m (300000/4). We can't possibly make an antenna to receive such signals
Why an antenna cannot receive analogue baseband signal of 0-4000Hz?
I heard we need a very large antenna to receive analogue baseband signal of 0-4000Hz? why?