SWRU359F September   2015  – December 2021 WL1801MOD , WL1805MOD , WL1831MOD , WL1835MOD

 

  1.   Trademarks
  2.   Warning
  3. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 TI Module Key Benefits
  4. 2Board Pin Assignment
    1. 2.1 Pin Descriptions
  5. 3Electrical Characteristics
  6. 4Approved Antenna Types and Maximum Gain Values
  7. 5On-Board Antenna Configuration
    1. 5.1 VSWR
    2. 5.2 Efficiency
    3. 5.3 Radio Pattern
    4. 5.4 ANT1
    5. 5.5 ANT2
  8. 6Circuit Design
    1. 6.1 Schematic
    2. 6.2 Bill of Materials (BOM)
  9. 7Layout Guidelines
    1. 7.1 Board Layout
  10. 8Revision History

Approved Antenna Types and Maximum Gain Values

This device is intended only for OEM integrators under the following conditions:

  • Install the antenna so that 20 cm is maintained between the antenna and user.
  • Do not co-locate the transmitter module with any other transmitter or antenna.
  • Operate the radio transmitter using only an antenna of a type and maximum (or lesser) gain approved by TI. Table 4-1 lists the antennas approved by TI for use with the radio transmitter along with maximum allowable gain values. Antenna types not included in the list or having a gain greater than the maximum indicated are strictly prohibited for use with this transmitter
Table 4-1 Approved Antenna Types and Maximum Gain Values
Antenna Type Brand 2.4–2.5 GHz Unit
PCB Ethertronics –0.600 dBi
Dipole LSR 2.00
PCB Laird 2.00
Chip Pulse 3.20
PIFA LSR 2.00
Chip TDK 2.4
Note: If these conditions cannot be met (for example, with certain laptop configurations or co- location with another transmitter), the FCC/IC authorization will not be considered valid and the FCC ID/IC ID cannot be used on the final product. In these circumstances, the OEM integrator is responsible for reevaluating the end product (including the transmitter) and obtaining a separate FCC/IC authorization.