Is bandwidth a range of frequencies?

bandwidth, in electronics, the range of frequencies occupied by a modulated radio-frequency signal , usually given in hertz (cycles per second) or as a percentage of the radio frequency.

If a signal has more bandwidth—in this case meaning that it includes or is compatible with higher frequencies—it can change more rapidly . Thus, more bandwidth corresponds to a higher maximum rate of data transfer.

Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies . It is typically measured in hertz, and depending on context, may specifically refer to passband bandwidth or baseband bandwidth.

Bandwidth is given as the range between these frequencies. For a high pass filter, the cut off frequency will define the lower value of bandwidth. For a low pass filter, the cutoff frequency will define the higher value of bandwidth .

The transmitted signal is therefore distributed in frequency over a bandwidth that is equal to twice the highest frequency in the signal . The broadcaster determines the bandwidth of the signal as transmitted by choosing the high-frequency cutoff of the modulating audio.