Ultrawideband (UWB) systems
Dewberry, Brandon Time Domain Corporation, Huntsville, Alabama.
Last reviewed:January 2021
- Swept-frequency radar
- Multiband radio
- Pulsed ultrawideband
- Pulse signal design
- Significance of pulsed technology
- Overcoming power limitations
- Related Primary Literature
- Additional Reading
Electronic systems that transmit radio-frequency (RF) energy with either (1) an instantaneous bandwidth of at least 500 MHz, or (2) a 10-dB fractional bandwidth (ratio of the instantaneous bandwidth measured at the –10 dB points to the center frequency) of at least 20%. This definition was developed during negotiations of the 2002 United States Federal Communications Commission (FCC) Report and Order for unlicensed commercial applications of ultrawideband systems. The U.S. Report and Order was followed by adjustments allowing commercialization in the International Telecommunications Union (ITU) covering the European Union (EU), and the resulting guidelines are now used throughout the rest of the world. Although UWB systems had been investigated for 40 years and used by the military for precision altimetry and ground-penetrating radar (GPR), these regulatory changes initiated rapid growth in commercial interest and early product development.
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