User's Guide

BL28EU-RD1 OEM Manual and User Guide
9
6.3 RF Antenna Layout Parameters
Type of Guidance
Requirement
Trace impedance
50-Ohms ± 10% single-ended
Total route length
<100-mm
Ground between signals
> 3 x line width of ground trace between, stitched VIA to ground
Spacing to other signals
< 3:1
• Signals should be routed along similar route path, but separated by ground trace.
• Trace impedances should match the table, either as microstrip or stripline.
• Total length for both signals should match the table.
• Spacing to ground or other signals on outside of bundled signals should match the table.