User's Manual
PCS3_HD_v01.000-03
Confidential / Preliminary
Page 56 of 101
2013-10-21
PCS3 Hardware Interface Description
5.1 CDMA Antenna Interface
5.1.2.2
Routing Example
Interface to RF Connector
Figure 28 shows a sample connection of a module‘s antenna pad at the bottom layer of the
module PCB with an application PCB‘s coaxial antenna connector. Line impedance depends
on line width, but also on other PCB characteristics like dielectric, height and layer gap. The
sample stripline width of 0.33mm is recommended for an application with a PCB layer stack
resembling the one of the PCS3 evaluation board shown in Figure 29. For different layer stacks
the stripline width will have to be adapted accordingly.
G N D
e.g.
ANT_
MAIN
G N D
Stripline (50Ohm) on top layer
of evaluation board from
antenna pad to module edge
Width = 0.33 mm
Ground connection
Edge of module PCB
50Ohm micro stripline
G N D G N D
E.g., U.FL antenna
connector
Figure 28: Routing to application‘s RF connector
Figure 29: PCS3 evaluation board layer table