Antenna Impedance

[Patrick Go]

Hello,

I am currently using nRF24L01P with TI CC2591 in my RF module product.

I have a doubt that need your help to clarify.

Does the antenna impedance given in the datasheet (page 15) 15+j88 ohms refer to single ended or balanced impedance? Is this impedance looking into the antenna or looking out?

Hope to hear your reply soon.

Thanks, Patrick

[Håkon Alseth]

Hi,

The impedance of the antenna should ideally be 50 ohm @ 2.4GHz.

The impedance from the datasheet is the optimal load for the ANT1/ANT2 pins (ie: the BALUN load).

Best regards Håkon