SWRA636C November   2019  – December 2020 CC1352P , CC2652P

 

  1.   Trademarks
  2. 1Introduction
  3. 2RF Matching Network
  4. 3System Considerations
  5. 4Results
  6. 5Settings
    1. 5.1 PA table
    2. 5.2 Overrides
  7.   A Design Details
    1.     A.1 Schematic
    2.     A.2 Layout
  8.   B References
  9.   Revision History

3 System Considerations

The EVM used for the test results presented in this application report, as well as in the CC1352P SimpleLink™ High-Performance Dual-Band Wireless MCU With Integrated Power Amplifier Data Sheet or the CC2652P SimpleLink™ Multiprotocol 2.4 GHz Wireless MCU With Integrated Power Amplifier Data Sheet (SWRS195), connects the PA output directly to an SMA connector. In a typical application, you would use an RF switch to combine the PA output with the regular 2.4 GHz RF matching for Rx. For an application example, see the LAUNCHXL-CC1352P-2 Design Files. To account for the typical loss in such an RF switch, the 10 dBm output power setting is tuned to output 10.5 dBm on the test EVM.

According to EN300 328 max output power is 10 dBm/MHz E.I.R.P. Depending on the data rate and antenna gain, this may limit the maximum conducted output power delivered to the antenna.

To ensure margins for passing FCC band edge requirements at 2480 MHz for Zigbee, back-off of the output power has to be evaluated.