SWRA729 April   2022 CC1352P , CC2652P

 

  1.   Trademarks
  2.   Acronyms
  3. 1Reference Designs Available
    1. 1.1 Single Component for 10-dBm PA Port
      1. 1.1.1 Murata PA IPC Equivalent Circuit
      2. 1.1.2 IPC Size and Dimensions
    2. 1.2 CC2652P PA IPC EM
      1. 1.2.1 Component Placement and Layout
      2. 1.2.2 Layout - Layer 1
      3. 1.2.3 Layout - Layer 2
      4. 1.2.4 Layout - Layer 3
      5. 1.2.5 Layout - Layer 4
  4. 2PA IPC Measurement Results
    1. 2.1 CC2652P Output Power, 1-Mbps Bluetooth Low Energy
    2. 2.2 CC2652P TX Efficiency, Harmonics, and Output Power at Various PA Settings
  5. 3Harmonic Emission Regulatory Requirements
    1. 3.1 Compliance with FCC regulations
    2. 3.2 Compliance with Regulations
  6. 4Summary
  7. 5References

3.2 Compliance with Regulations

Figure 3-2 shows that the CC1352P/CC2652P complies with ETSI conducted, ETSI radiated regulations, and the FCC conducted regulations. The FCC radiated regulations are compliant if duty cycling is utilised whilst operating at maximum output power. If it is not possible to use duty cycling, then it is recommended to use an external notch filter to pass FCC radiated regulations or to reduce the output power.

Note that the radiated emission level will be dependent on the ground plane, decoupling capacitors and power routing. The choice of antenna will also affect the radiated emissions.

It is important that the antenna is matched (VSWR < 2.1) for 2.4 GHz frequencies. Otherwise, if the antenna mismatch is large then there will be unwanted radiated emissions and the wanted output power will be reduced.

Figure 3-2 shows worst case radiated performance when using the 10 dBm setting. If there is a need to decrease the fundamental and/or the 2nd harmonic a reduction in power setting would also give the desired result.

Figure 3-2 2.4-GHz ETSI EN300 220 Radiated Emissions at 10-dBm Output