Insertion loss of BAL-NRF01D3

[Jamie]

Hi,

I recently made a custom board using the nRF51822 and the LC network using values from the reference design. After fabrication and assembly, I tested the insertion loss of the resulting design and found it to be between 1-2dB.

Looking at the data sheet for the BAL-NRF01D3, I see it reports its own insertion loss to be 2.25dB. ST also claims higher performance of this part compared to the discrete LC network due to better harmonics rejection.

How to decide which method (LC or balun) can result in the best overall performance?

1. Using a pi-network, can I tune the LC network to have similar harmonics performance as the balun, and conversely, 2) can the balun be somehow tuned to have an insertion loss comparable to the 1-2dB I could achieve with the LC network?

Thanks, Jamie

[RENARD]

Hello,

Datasheet of BALF-NRF01D3 will be available very soon in the www.st.com internet site. In the meantime, see attached the preliminary datasheet

Best Regards Richard

BALF-NRF01D3.pdf