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An FM signal has a resting frequency of 105 MHz and highest frequency of 105.03 MHz when modulation by a signal of frequency 5kHz. Determine (i) frequency deviation and (ii) carrier swing. |
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Answer» Solution :RESTING frequency (F) = 105 MHz Frequency of the signal `(f_s)` = 5 KHZ Highest frequency of the MODULATED wave, `(f_m)` = 105.03 MHz. Frequency deviation `= Deltaf = ?` Carrier swing (CS) = ? Frequency deviation `(Deltaf) = f_m -f ` `Deltaf = 105.03 - 105 =0.03 MHz ` Carrier swing `= 2 xx Deltaf = 2 xx 0.03 = 0.06 MHz ` ` = 60 kHz`. |
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