User's Guide

DT-0237A page 18 of 34 Rev: 1.1
CONFIDENTIAL
DISTRIBUTED UNDER LICENSE
• Pads Solder Mask Opening of 0.1mm is recommended.
Reference trace designs
RF traces from OSDI module pads W10 and W16 to the antenna must be made using micro-strip traces. This micro-strip trace must
respect the design of the Gerber files associated with the following designs in order to obtain a uniform transmission line with a
characteristic impedance of 50 ohms. The reference trace designs are shown in the following sections.
5.4.1 Layout and parts for M antenna
The reference trace for this antenna is the green traces along with the side copper filled with vias on the left side of Figure 16 where
components G8, G9, G11 and G12 are not installed. As preliminary information the traces width of all sections are 0.27mm and the length
of each section, starting from the LGA pad to the M antenna are: LGA pad to G7: 15.38mm; G7 to G10: 12.37mm; G10 to R50: 2.3mm;
R50 to M antenna: 4.85mm. However, refer to associated Gerber files for more accurate details on dimensions and refer to Trilliant
Networks Inc for more details on the Gerber files. Table 2 shows the parts used in this reference trace design.
Figure 16 FCC and IC approved trace design layout and picture for the M antenna of section 4.2.1