
62-6 Medical, Biomedical, and Health
regulation of −41.3 dBm/MHz, the band is suppressed to less than −55 dBm. erefore, it does not
in
terfere
wi
th
ex
isting
ra
dios
. Fi
gure
62.4b al
so
sh
ows
th
e
po
wer
sp
ectrum
ag
ainst
th
ree
na
rrowband
in
terferences
wh
ere
we as
sumed
th
ree
sp
ectrum
ho
les
of 3.31
0–3
.37
9
GH
z,
3.62
1–3
.65
5
GH
z,
an
d
3.89
7–
3
.96
6
GH
z
(c
orresponding
to 16.6%
)
as sh
own
in Fi
gure
62.4b. Fi
gure
62.5 sh
ows
th
e
ra
nge
sp
ectrums
fo
r
6.6% a
nd
1
6
.6% w
here
a z
ero-padding
w
as
u
sed
f
or
t
he
I
DFT
p
rocessing
(
1024
p
oints)
.
62.3 Detection and Avoid Technology
The UWB device operating in the 3.1–4.2 GHz band is required to implement a DAA technology