Hi Team
We are working on NFC for our new product.
When we measure the power level each GPIO we don't reach more than 700mv.
Changing the antenna to a larger antenna did not increase the power level
My question is why we don't see any change in the power level if we change the antenna to a bigger antenna
I don't understand why you are measuring, and refereeing to Vsense.. Vsense is defining the threshold level for the NFC1 and NFC2 pins, differential voltage, for when it's in Sense mode:
"Wake-on-field is supported in SENSE mode while the device is either in System OFF or System ON mode. When the antenna enters an NFC field, an event will be triggered notifying the system to activate the NFC functionality for incoming frames. In System ON, if the energy detected at the antenna increases beyond a threshold value, the module will generate a FIELDDETECTED event."
For tuning:
Best regards,
Kaja
I don't understand why you are measuring, and refereeing to Vsense.. Vsense is defining the threshold level for the NFC1 and NFC2 pins, differential voltage, for when it's in Sense mode:
"Wake-on-field is supported in SENSE mode while the device is either in System OFF or System ON mode. When the antenna enters an NFC field, an event will be triggered notifying the system to activate the NFC functionality for incoming frames. In System ON, if the energy detected at the antenna increases beyond a threshold value, the module will generate a FIELDDETECTED event."
For tuning:
Best regards,
Kaja
