Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 GNSS Antenna Interface
- 2.4 Sample Application
- 3 Operating Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
PLSx3 Hardware Interface Description
2.2 RF Antenna Interface
60
t PLSx3_HID_v01.003 2021-03-12
Public / Released
Page 55 of 121
2.2.3.2 Routing Example
Interface to RF Connector
Figure 18 and Figure show 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 de-
pends on line width, but also on other PCB characteristics like dielectric, height and layer gap.
The sample stripline width of 0.33mm/0.8mm and the space of 0.625mm/0.173mm are
only recommended for an application with a PCB layer stack resembling the one of the PLSx3
evaluation board, and with layer 2 as well as layer 3 cut clear. For different layer stacks the
stripline width will have to follow stripline routing rules, avoiding 90 degree comers and using
the shortest distance to the PCB’s coaxial antenna connector.
Figure 18: Routing to application‘s RF connector
G N D
G N D
Edge of module PCB
Stripline (50 ohms) on top
layer of evaluation board from
antenna pad to module edge
Width = 0.33 mm
E.g., U.FL antenna
connector
50 ohms microstrip line
G N D G N D
Ground connection
e.g.
ANT_
TRX1