Ultrawideband (UWB) systems
Dewberry, Brandon Time Domain Corporation, Huntsville, Alabama.
- 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.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information