UWB - affect the stability of such existing systems ????? :(:(

I find those lines in the below link -

The signal bandwidth of a UWB system occupies channels used by other systems. In order to do that and still meet regulations, it falls under similar regulations as for unintentional emissions from any electronics, like computers, toys, etc. The idea of the regulations is to prevent too much radiated "pollution" from ruining the channels for communications systems. The more radiation sources are present the more pollutiing energy there is, but the sources tend to be spread out enough that the sectra is still usable.

I think the same will be true of UWB devices, i.e., there won't be so many of them that their energy will add up to anything significant, especially since they transmit very low power levels, anyway.

So UWB devices try to sneak in on other device's channels but do so by transmitting very low power levels. The Wiki article says not more than -41.3dBm/MHz, which will be seen as a small increase in noise to most systems, if noticed at all.

Eric Jacobsen Minister of Algorithms Abineau Communications

UK CAA had (circa 2002) proposed banning inflight use of UWB radio equipped laptops.

First in situ research done in 2007:

Since I live in the UK:- Ofcom's consultation document 2005

Since they have more or less had to comply with the EU directive