User's Manual

SaBLE-x Module

APPLICATION GUIDE

The information in this document is subject to change without notice.

PCB Trace Antenna Implementation

When using the PCB Trace Antenna version of the module (Part Number 450-0119), the PCB

layout shown in Figure 4, Figure 5, and Figure 6 should be followed. It is acceptable to keep the

U.FL circuitry J3, or it may be removed from the PCB to save component cost. By keeping the

external U.FL circuitry, the design can accommodate both antenna versions of the module. To

minimize the influence of de-tuning to the module PCB trace antenna, it is recommended to

extend the antenna end of the module off the edge of the host PCB. Another alternative is to

have a cutout notched in the host PCB such that there is no PCB underneath the antenna end

of the module.

External Antenna Implementation (Dipole, FlexPIFA, or FlexNotch)

When using the External Antenna Port version of the module (Part Number 450-0144), and one

of the three certified 2.4 GHz antennas (Dipole Antenna and U.FL to RPSMA Cable, FlexPIFA,

or FlexNotch), the PCB layout shown in Figure 4 should be followed. The U.FL connector J3

must be populated, and a controlled impedance microstrip trace ran between the module RF

output pad and the U.FL connector as shown in the Reference Design PCB Figure 4, Figure 5,

and Figure 6) and the Schematic Figure 7.

Please use the latest CAD files from the LSR web site when incorporating the SaBLE-x module

into a new design. CAD files are provided in native Mentor Grahics PADS PCB and PADS

Logic formats, as well as ASCII, Gerber, and PDF formats. CAD files can also be translated to

most popular CAD package. Contact LSR Tech support for CAD translation.

Visit the LSR web site http://www.lsr.com for current PCB and Schematic CAD files.