User's Manual

Sterling-LWB Module

APPLICATION GUIDE

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

3 PCB Layout Requirements

Since this module and its associated set of approved antennas has been certified by the FCC and

Industry Canada (IC) as a Modular Radio, the end user is authorized to integrate this module into

an end-product, and is solely responsible for the Unintentional Emissions levels produced by the

end-product.

In order to preserve the Modular Radio certifications, the integrator of the module must abide

by the PCB layout recommendations outlined in the following paragraphs. Any divergence from

these recommendations will invalidate the modular radio certifications and require the

integrator to re-certify the module and/or end-product.

The module must be used with one of the approved antennas:

1. Johanson Technology 2450AT18D0100 Ceramic Chip Antenna.

2. LSR 001-0014 2.4 GHz FlexPIFA Antenna w/U.FL cable.

3. LSR 001-0015 2.4 GHz FlexNotch Antenna w/U.FL cable.

4. LSR 001-0001 center-fed 2.4 GHz dipole antenna and 080-0001 U.FL to Reverse Polarity

SMA connector cable.

When using the module and the reference design that supports the off module U.FL

connector(s), you may use a substitute antenna if the antenna gain is less than or equal to +2

dBi. It may be possible to use a substitute chip antenna, however there are restrictions so

please contact LSR for guidance prior to making any chip antenna substitutions.

LSR provides a 4-Layer FCC Modular Certified reference design. It is a controlled impedance PCB

that uses microstrip trace design to route RF signals from the Sterling-LWB module to the

Antennas and coaxial connectors.

Please use the latest CAD files from the LSR web site when incorporating the Sterling-LWB

module into a new design. CAD files are provided in native Mentor Graphics 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.