Copenhagen hosted last 18-20 October the 16th meeting of the EEC TG3 - UWB (ultra wide band) working group, which is mandated to develop regulatory solutions for devices using UWB technology in bands below 10.6 GHz.
Regarding specific UWB applications, the proposed decisions EEC/DEC/(06)LL (The Harmonised Conditions for Devices Using Ultra-Wideband (UWB) Technology with Low Duty Cycle (LDC) in the Frequency Band 3.4-4.8 GHz), EEC/DEC/(06)KK (Building Material Analysis (BMA) Devices Using UWB Technology in Bands Below 8.0 GHz) and EEC/DEC/(06)GG (The Conditions for Use of Ground and Wall Probing Radar (GPR/WPR) Imaging Systems) were in public consultation until last 18 September, along with EEC Report 94 (Technical Requirements for UWB LDC Devices to Ensure the Protection of FWA Systems). The comments from the public consultation were considered by the group and the related documents should be submitted for approval to the next EEC meeting in November.
Regarding the regulation for generic UWB devices below 10.6 GHz, various items are being debated, which resulted from the talks at the last EEC meeting in July ? the aim is to evaluate whether its is possible to relax some of the limits of decision EEC(DEC)/(06)04, approved in March 2006. For the DAA (detect and avoid) mitigation technique, this meeting basically served to define the work to carry out in the future.
Also assessed was the impact of UWB devices on radars, specifically in re-determination of those devices? limits in the bands from 2.7 to 3.4 GHz and 8.5 to 9 GHz. Based on the submitted studies, it was possible to conclude that a limit of 70 dBm/MHz can be adopted from 2.7 to 3.4 GHz, while for the band from 8.5 to 9 GHz scenarios will be determined in order to carry out new compatibility studies at the next meeting in December. The efficiency of the LDC (low duty cycle) and DAA mitigation techniques below 3.4 GHz will also be studied.
The group defined the work to produce concerning the emission limit to be adopted for UWB devices in the band from 3.4 to 3.8 GHz. The possibility of installing UWB devices in automobile vehicles, aircraft and fixed installations in outside environments was also debated.
