The term 'single-band' is derived from the words 'single' and 'band', where 'single' means 'one' and 'band' refers to a range of frequencies.

The concept of 'single-band' emerged with the development of radio and wireless communication technologies, where devices were initially designed to operate on a single frequency band.

Initially, it referred to any device operating on one frequency, but now it is often used in contrast to 'dual-band' or 'multi-band' devices.