XtremeSpectrum told FCC last week, before ’sunshine period’ close...
XtremeSpectrum told FCC last week, before “sunshine period” closed on ultra-wideband Feb. 13 agenda meeting item, that Satellite Industry Assn. (SIA) had “greatly overestimated” claims of potential interference on fixed satellite service (FSS) systems. FCC plans to vote on…
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UWB petitions for reconsideration at Thurs. agenda meeting. AOL Time Warner, Viacom, Warner Bros. and others told Commission last week that they backed SIA petition for reconsideration, citing potential interference for C-band receive antennas (CD Feb 10 p6). XtremeSpectrum, in ex parte filing, cited problems with SIA analysis of UWB handheld devices. It said FCC’s certification process used open-air test site with equipment that maximized multipath reflections and receive antenna that was raised 1-4 meters while device rotated to find highest emission level. That allowed test lab to find “worst case” orientation and multipath level, XtremeSpectrum said. “SIA claims of increased interference potential due to multipath are without merit,” filing said. In other areas, XtremeSpectrum said SIA’s analysis incorrectly assumed common polarization type and alignment and isotropic radiation pattern from UWB device. “Correcting these assumptions reduces the predicted signal at the earth station by an average of 6 dB,” XtremeSpectrum said. It also said SIA used antenna response in its assumptions that was outdated and “not useful for interference analysis.”