Will a multi-band system need to comply with additional regulatory constraints defined by the FCC for frequency hopping systems compared to pulsed systems?
No. The concern the FCC has with frequency hopping systems is mainly regarding frequency hopping systems or frequency swept systems with narrowband modulation that rely on frequency hopping and/or sweeping to fill up the 500 MHz minimum bandwidth required for UWB systems. The discussion regarding hopping and frequency swept systems is reflected in the FCC first report and order, published 14 February 2002, which states the following: “…Thus, as long as the transmission system complies with the fractional bandwidth or minimum bandwidth requirements at all times during its transmission, we agree that it should be permitted to operate under the UWB regulations. We recognize that this may preclude certain types of modulations, such as swept frequency (e.g., FMCW), stepped frequency or frequency hopping systems. The current measurement procedures require that measurements of swept frequency devices be made with the frequency sweep stopped. The sweep is stopped because no measurement procedu
