Figure 19: Placement of the module with integrated antenna
15.2. Dimensioning of the micro strip antenna line
The antenna track has to be designed as a 50
Ω
feed line. The width W for a micro strip can
Figure 20: Dimensioning the antenna feed line as micro strip
be calculated using the following equation:
W
= 1
.
25
×
5
.
98
×
H
e
50
×
√
r
+1
.
41
87
−
T
met
!
(1)
Example:
A FR4 material with
ε
r
= 4.3, a height H = 1000 µm and a copper thickness of T
met
= 18 µm
Calypso reference manual version 1.2
© April 2019
www.we-online.com/wireless-connectivity
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