Doc No: WG1300BE00 EM Board-UG-R02
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JORJIN TECHNOLOGIES INC. 2014
http://WWW.JORJIN.COM.TW
CONFIDENTIAL
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Figure 12. Layer 1 Combined with Layer 2
Reference
Guideline Descriptions
1
The RF trace antenna feed must be as short as possible beyond the
ground reference. At this point, the trace starts to radiate.
2
The RF trace bends must be gradual with an approximate maximum
bend of 45 degrees with trace mitered. RF traces must not have
sharp corners.
3
RF traces must have via stitching on the ground plane beside the RF
trace on both sides.
4
RF traces must have constant impedance (microstrip transmission
line).
5
For best results, the RF trace ground layer must be the ground layer
immediately below the RF trace. The ground layer must be solid.
6
There must be no traces or ground under the antenna section.
7
The PCB designer must understand the microstrip model used and
the scale line width according to the microstrip model.
8
RF traces must be as short as possible. The antenna, RF traces, and
modules must be on the edge of the PCB product. The proximity of
the antenna to the enclosure and the enclosure material must also
be considered.
Table 9. Antenna and RF Trace Routing Layout Guidelines
