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Possible to fine-tune/offset frequency of radio (nrf51822) in code?

davman

Hi,

We're using an off the shelf module with a trace antenna that can't be modified. Measured the module once assembled, and due to surrounding plastic materials, the impedance of the antenna is not 50ohm resulting in the resonance frequency being shifted by ~150MHz.

As this is a fixed offset causing a drop in efficiency, I wonder if it's possible via SoftDevice to compensate to this by offsetting the radio accordingly.

System can run either SD 6.0 or 7.0, Bluetooth LE only.

best david

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    I have no idea if it is possible, although I've not seen anything in Nordic's documentation that would give you the ability to do that. That said, I suspect you might have problems with compliance bodies as the radio is no longer behaving as it was tested for intentional emitter compliance.

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    I have no idea if it is possible, although I've not seen anything in Nordic's documentation that would give you the ability to do that. That said, I suspect you might have problems with compliance bodies as the radio is no longer behaving as it was tested for intentional emitter compliance.

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