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IWR1443BOOST: Rx Antenna Array

Part Number: IWR1443BOOST

Hey everyone,

the IWR1443BOOST has four connected onboard antennas. On every side of this array there is another antenna, which is not connected.

What is the reason for this? My suggestion: To provide an equal field for each connected rx antenna.

Could you give me details about it or is there any documentation?

Thank you,

Enric