Baseband signal

RF frequency bands A radio frequency band is a small contiguous section of the radio spectrum frequencies, in which channels are usually used or set aside for use . For example, broadcasting, mobile radio, or navigation devices, will be allocated in non-overlapping ranges of frequencies.

A frequency band is an interval in the frequency domain, delimited by a lower frequency and an upper frequency . The term may refer to a radio band or an interval of some other spectrum.

A “band” refers to a small portion of the radio spectrum such as the UHF TV band (470MHz to 860MHz). A “channel” refers to a portion of a band which in the case of the TV Band is around 8MHz wide.

In the context of mobile telephony, a band refers to any range of frequencies in the radio spectrum’s ultra high frequency (UHF) band . Telephony bands are regulated and licensed to operators that provide mobile phone services.