CC3135MOD: DC Blocking Capacitor in RF Path

Oleksandr Bogush

Part Number: CC3135MOD

Hi,

Do I need to place a DC blocking capacitor (10pF or so) in RF path before the antenna matching network? The CC3135MOD datasheet SWRS225C assumes that I do not have to, but the booster pack schematic BOOSTXL-CC3135MOD has it.

Thanks,

Olek

over 4 years ago

0 Vincent Rodriguez over 4 years ago

TI__Mastermind 28285 points

Hi,

The internals of the module already contains a DC blocking cap. The reason for this cap is for antenna matching - you'll want a PI configuration before your antenna to ensure you are able to proper tune your antenna for your design.

BR,

Vince

0 Oleksandr Bogush over 4 years ago in reply to Vincent Rodriguez

Intellectual 290 points

Hi Vince,

Thanks for the prompt reply. The booster pack BOOSTXL-CC3135MOD has a DC blocking capacitor before the PI circuit.

Thanks,

Olek

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CC3135MOD: DC Blocking Capacitor in RF Path