Figure 11. S11 diagram (Tx mode)
Results:
• Rx r eturn loss: -11.8 dB (2.4 GHz) < S11 < -19 dB (2.48 GHz)
• Tx r eturn loss: -17.2 dBm (2.48 GHz) < S11 < -17.5 dB (2.4 GHz)
RF matching shows good results on this PCB revision. Sensitivity could reach -95 dBm.
3.2 Clocks
The FRDM-KW36 board provides two clocks. A 32 MHz for clocking the MCU and Radio, and a 32.768 kHz to provide an accurate
low power time base.
Figure 12. FRDM-KW36 32 MHz reference oscillator circuit
NXP Semiconductors
Functional description
FRDM-KW36 Freedom Development Board User’s Guide, Rev. 4, 01/2020
User's Guide
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