The fractional bandwidth is usually expressed as a decimal value or a percentage. For example, a signal with a center frequency of 100 MHz and a bandwidth of 10 MHz has a fractional bandwidth of 0.1 or 10%.

Fractional Bandwidth = 100 MHz 10 MHz ​ = 0.1 or 10%

Fractional bandwidth, also known as relative bandwidth, is a measure of the bandwidth of a signal or a channel, expressed as a fraction of the center frequency. It is a dimensionless quantity that represents the proportion of the bandwidth to the center frequency. Fractional bandwidth is often used in radio frequency (RF) engineering, signal processing, and telecommunications to describe the bandwidth of a signal or a filter.

In conclusion, fractional bandwidth is an essential concept in telecommunications, signal processing, and RF engineering. It represents the proportion of the bandwidth to the center frequency and is used to specify the bandwidth of signals, channels, and filters. Using a fractional bandwidth calculator simplifies the calculation process, ensuring accuracy and saving time. Whether you are a network engineer, a signal processing expert, or a telecommunications professional, a fractional bandwidth calculator is a valuable tool to have in your toolkit.