Cinterion
®
ELS31-VA/ELS51-VA Hardware Interface Description
2.2 RF Antenna Interface
56
ELS31-VA_ELS51-VA_HID_v01.000
2017-01-04
Confidential / Preliminary
Page 52 of 106
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Micro-Stripline on 1.5mm Standard FR4 2-Layer PCB
The following two figures show examples with different values for D1 (ground strip separa-
tion).
Figure 27:
Micro-Stripline on 1.5mm Standard FR4 PCB - example 1
Antenna line
Ground line
Ground line
Application board