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nRF52832 - antenna finetuning via software

wne

Hi,

I am using a ISP3010 SiP which inludes a nrf52832, a DW1000 and the corresponding antennas (built-in antenna).

I have a custom board (board1) as reference, where the RF-performance, especially the range of BLE and UWB, is pretty good.

Now I have a second custom board (board 2, exactly the same as board 1) which is surrounded by a potting compound.

The RF-Performance/range of board 2 is much worse than board 1. I know that the potting compound causes a shift in the RF-frequency.

Because I am not able to change the hardware anymore, I wanted to ask if there is any possibility to "tune" the antenna by software?

Thanks and kind regards

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    Hi wne,

    Guess what! We are at the same problem as you are! We are also potting our NRF board and for the reason, we are seeing shift of around 60-65 MHz. I dont see any solution with software, so its better to resort to tuning in hardware if you have multiple boards, pot them and check for the desired center frequency. Maybe you can use some field solvers to simulate your pi network for the desired impedance.

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  • 0

    Hi wne,

    Guess what! We are at the same problem as you are! We are also potting our NRF board and for the reason, we are seeing shift of around 60-65 MHz. I dont see any solution with software, so its better to resort to tuning in hardware if you have multiple boards, pot them and check for the desired center frequency. Maybe you can use some field solvers to simulate your pi network for the desired impedance.

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