19.4. Footprint
1
8
B1
9
12
13
18
B3
B6
no metall
6
,0
4,23
1,9
1,2
8,4
0,8
12,5
1
2
,5
1,2
6,0
0,5
9
,0
3
,6
1
,5
Figure 34: Footprint [mm]
19.5. Antenna free area
To avoid influence and mismatching of the antenna the recommended free area around the
antenna should be maintained. As rule of thumb a minimum distance of metal parts to the
antenna of
λ
/10 should be kept (see figure
). Even though metal parts would influence
the characteristic of the antenna, but the direct influence and matching keep an acceptable
level.
Proteus-III reference manual version 1.3
© August 2020
www.we-online.com/wireless-connectivity
203