User's Manual

SaBLE-x Module

APPLICATION GUIDE

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

6 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. On module PCB trace antenna.

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

SMA connector cable.

3. LSR 001-0014 2.4 GHz FlexPIFA Antenna.

4. LSR 001-0015 2.4 GHz FlexNotch Antenna.

When using the external antenna version of the module (450-0144), and the reference design

that supports the off module U.FL connector, you may use a substitute antenna if the antenna

gain is less than or equal to +2 dBi.

LSR provides a FCC Modular Certified reference design which utilizes a controlled impedance

PCB that uses microstrip trace design to route the RF signal from the SaBLE-x module to an

external coaxial connector. The external coaxial connector and associated microstrip PCB trace

is optional when the application is using the On Module PCB Trace Antenna version of the

module (450-0119).

In order to use the modular certification for your design, it is critical that the reference design is

correctly followed. The full PCB reference design is shown in Figure 4, Schematic Figure 7, and

Bill of Materials Table 9. It is not required to replicate the entire design, but what is required is

the circuitry and layout as it pertains to the antenna configuration as shown in Figure 5 and

Figure 6.