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Ultra-Wideband Communications: Fundamentals and Applications by Faranak Nekoogar

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1.10. FCC Emission Limits

As explained in Section 1.9, in order to protect existing radio services from UWB interference, the FCC has assigned conservative emission masks between 3.1 GHz and 10.6 GHz for commercial UWB devices. The maximum allowed power spectral density for these devices—that is,–41.3 dBm/MHz, or 75 nW/MHz—places them at the same level as unintentional radiators (FCC Part 15 class) such as televisions and computer monitors. Based on the FCC regulations, UWB devices are classified into three major categories: communications, imaging, and vehicular radar.

1.10.1. Communications Devices

For communications devices, the FCC has assigned different emission limits for indoor and outdoor UWB devices. The spectral mask for outdoor devices ...

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