Antennas
Bandwidth

The bandwidth of an antenna is the band of frequencies, over which it is considered to perform acceptably. The wider the range of frequencies a band encompasses, the wider the bandwidth of the antenna. The formula for bandwidth is shown in Figure .

Antennas are ordered pre-tuned by the manufacturer, for use in a specified band segment. The trade-off in designing an antenna for a wider bandwidth is that it would generally not have as good of performance in comparison to a similar antenna that is optimized for a narrower bandwidth.