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TRF7964A: Objective of the LC components in front of the TRF79xxA NFC Reader/Writer

Part Number: TRF7964A
Other Parts Discussed in Thread: TRF7970A

Hello,

I have almost completed (Antenna and tuning compoents) my NFC design with the TRF7964 IC. And I tried to understand, what was the main objective of the highlighted components into the design from TI. I started with the idea that they were for Tx AC coupling and/or Rx bandpass/EMI filtering and finally impedance matching. But after having running some PSpice simulations I am no longer convinced of that. Is there any design note taking about these components and their role(s)?

See the parts highlighted into my picture atta ched

 

 

Thank you

 

Best Regards

 

 

Bruno