WIDEBAND

1. The property of any communications facility , equipment, channel , or system in which the range of frequencies used for transmission is greater than 0.1 % of the midband frequency . ( 188 ) Note: "Wideband" has many meanings depending upon application. "Wideband" is often used to distinguish it from "narrowband," where both terms are subjectively defined relative to the implied context. 2. In communications security systems, a bandwidth exceeding that of a nominal 4-kHz telephone channel. ( 188 ) [ From Weik '89 ] 3. The property of a circuit that has a bandwidth wider than normal for the type of circuit, frequency of operation , or type of modulation . 4. In telephony , the property of a circuit that has a bandwidth greater than 4 kHz. ( 188 ) 5. Pertaining to a signal that occupies a broad frequency spectrum. Synonym broadband. [ From Weik '89 ]