SWRS126-015

Via stitching

beside RF

trace

Antenna on

the edge

of PCB

No trace and

ground under

antenna section

No sharp

corner

Constant

impedance for

RF trace

Top layer

Bottom layer

CC3000MOD

www.ti.com

SWRS126 – NOVEMBER 2012

DESIGN RECOMMENDATIONS

This section describes the layout recommendations for the CC3000 module, RF trace, and antenna.

Antenna

The ACX ceramic antenna is mounted on the CC3000 EVM board with a specific layout and matching circuit for

the radiation test conducted in FCC, CE and IC certifications. Figure 10 shows the location of the antenna on the

EVM board as well as the RF trace routing from the CC3000 module.

Figure 10. RF Trace and Antenna Design for PCB Layout

Module Layout Recommendations

Observe the following module layout recommendations (see also Figure 11):

•

Have a solid ground plane and ground vias under the module for stable system and thermal dissipation.

•

Do not run signal traces underneath the module on a layer where the module is mounted.

•

Signal traces can be run on a third layer under the solid ground layer and beneath the module mounting

layer.

Copyright © 2012, Texas Instruments Incorporated

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