# What is frequency modulation and its types?

## What is frequency modulation and its types?

There are two different types of frequency modulation used in telecommunications: analog frequency modulation and digital frequency modulation. In analog modulation, a continuously varying sine carrier wave modulates the data signal.

### What is frequency modulation with example?

Frequency_Modulation. FREQUENCY MODULATION (FM) The process of varying the FREQUENCY of a signal, often PERIODICally. An example of FM is the violinist’s VIBRATO, where the length of a string (and therefore the resulting pitch) is rapidly altered by a fast oscillating movement of the finger and wrist.

#### What is the main disadvantages of FM?

Disadvantages of FM: Much more Bandwidth (as much as 20 times as much). More complicated receiver and transmitter.

What are advantages of frequency modulation?

Less interference and noise. Equipment cost is higher. Has a large bandwidth.
Power Consumption is less as compared to AM. More complicated receiver and transmitter

What is meant by frequency modulation?

Frequency Modulation • In frequency modulation, frequency of the carrier is varied in accordance with the instantaneous value of the amplitude of the modulating signal keeping the amplitude of the carrier fixed. 6.

## What is the maximum modulation frequency of narrow band FM?

Narrow Band FM  Modulation index is less than 1  Maximum Modulating Frequency is usually 3KHZ and Maximum frequency deviation is 75KHZ 16.

### What are the disadvantages of frequency modulation?

Disadvantages of Frequency Modulation  Requires more complicated demodulator  Some other modes have higher data spectral efficiency  Sidebands extend to infinity either side 15. Narrow Band FM  Modulation index is less than 1  Maximum Modulating Frequency is usually 3KHZ and Maximum frequency deviation is 75KHZ

#### What is the if modulation index (β)?

IF Modulation Index (β) = 1 10. IF Modulation Index (β) = 25 11. Spectrum of Frequency Modulation 12. Practical Examples of Frequency modulation 13.