Flashcards
Frequency Modulation
Cards in this deck (8)
- 1Define frequency modulation (FM)The frequency of the carrier is changed in accordance with the amplitude of the modulating wave
- 2Define centre frequency?The frequency occupied by the carrier when in an un-modulated state
- 3Define frequency deviation (fd)The amount of change in frequency from the centre frequency in the modulated wave
- 4Define carrier/frequency swing?The difference between the highest and lowest frequencies the modulated wave can attain
- 5Define deviation ratio?The ratio of the maximum frequency deviation and the highest permissable modulating frequency
- 6Define modulation index (MI)The decimal number representing the ratio of the frequency deviation and the highest frequency of the modulating wave
- 7How would you work out the modulation index?MI = fd/fm
- 8How would you work out the transmission bandwidth (FM)?Tx BW = 2(fd + fm) = Hz
Information
- Description
- BigDave BigDave (Topics) Flashcards on Frequency Modulation, created by B L on 13/02/2017.
- Created by
- B L
- Views
- 0
- Rating
More on Analog and Digital Modulation