Reference Manual

Table Of Contents
Filter and blocking capacitors should be placed directly in the tracks without stubs, to
achieve the best effect.
Antenna matching elements should be placed close to the antenna / connector, block-
ing capacitors close to the module.
Ground connections for the module and the capacitors should be kept as short as
possible and with at least one separate through hole connection to the ground layer.
ESD protection elements should be placed as close as possible to the exposed areas.
Figure 18: Placement of the module with integrated antenna
16.2 Dimensioning of the micro strip antenna line
The antenna track has to be designed as a 50 feed line. The width W for a micro strip can
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
Proteus-III reference manual version 0.11 © November 2019
www.we-online.com/wireless-connectivity 181