Product Info

Cinterion
®
PLS63-W Hardware Interface Overview
2.2 RF Antenna Interface
31
t PLS63-W_HIO_v00.860 2021-02-18
Confidential / Preliminary
Page 23 of 61
2.2.1 Antenna Installation
The antenna is connected by soldering the antenna pads (ANT_MAIN, ANT_DRX and
ANT_GNSS) and their neighboring ground pads directly to the application’s PCB.
Figure 11: Antenna pads (bottom view)
The distance between the antenna pads and their neighboring GND pads has been optimized
for best possible impedance. To prevent mismatch, special attention should be paid to these
pads on the application’ PCB.
The wiring of the antenna connection, starting from the antenna pad to the application’s anten-
na should result in a 50
 line impedance. Line width and distance to the GND plane need to
be optimized with regard to the PCB’s layer stack. Some examples are given in Section 2.2.2.
To prevent receiver desensitization due to interferences generated by fast transients like high
speed clocks on the external application PCB, it is recommended to realize the antenna con-
nection line using embedded Stripline rather than Micro-Stripline technology. Please see Sec-
tion 2.2.2 for examples of how to design the antenna connection in order to achieve the
required 50
 line impedance.
For type approval purposes, the use of a 50
 coaxial antenna connector (U.FL-R-SMT) might
be necessary. In this case the U.FL-R-SMT connector should be placed as close as possible
to PLS63-W‘s antenna pad.
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P
N
M
L
GND
K
ANT_
MAIN
J
GND
H
G
F
GND
E
ANT_
GNSS
D
GND
C
B
A
GND ANT_
DRX
GND