User's Manual

Sterling-LWB5 Module

APPLICATION GUIDE

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

3 Sterling-LWB5 Module PCB Layout Requirements

Since the modules and their 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 these

modules 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 2450AD14A5500T Ceramic Chip Antenna.

2. LSR 001-0016 2.4/5.5 GHz FlexPIFA Antenna w/U.FL cable.

3. LSR 001-0009 center-fed 2.4/5.5 GHz dipole antenna and 080-0001 U.FL to Reverse Polarity

SMA connector cable.

When using the modules and or the reference designs that support the off module U.FL

connector(s), you may use a substitute antenna if the antenna gain is less than or equal to +2.5

dBi in the 2.4 GHz band and less than or equal to +4 dBi in the 5 GHz band. 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 FCC Modular Certified reference design. It is a controlled impedance PCB that

uses microstrip trace design to route RF signals from the Sterling-LWB5 module to the Antennas

and coaxial connectors.

Please use the latest CAD files from the LSR web site when incorporating the Sterling-LWB5

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.