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Original question:

CC2642R: CC2642R5

CC2745R10-Q1: CC2745 antenna port capacitance inductance

SHAO DINGXUAN
Prodigy 60 points
Part Number: CC2745R10-Q1

Tool/software:

ABOUT CC2745, DEMO SCH show ANT port needs 1.1nH and 0.82pF  3.4nH,1.2pF,Are these values necessary?Why are C33 and L34 connected in this way? Can they be connected directly to capacitive or electrically inductive ground

  • 0
    TI__Expert 3410 points

    Hi Shao,

    These values have been carefully tuned to give a good compromise between harmonic levels, transmit power, receiver sensitivity and current consumption. They are necessary to have in your design. By removing these components, your will have higher level of harmonics and you might not see the typical RF performance.

    Regards,

    HG