Part Number:TRF7970A
We are failing the Occupied Frequency Range test at our notified body with our custom TRF7970A design. Requirement says that 99% of the radiated power must be within the band so we can't just lower the power either.
The result from the measurements:
OFR | 25.0 kHz |
fL | 13.5475 MHz |
fH | 13.5725 MHz |
fc | 13.56 MHz |
And the requirement:
The operating frequency ranges for intentional emissions shall be entirely within the frequency band:
Frequency Bands/frequencies | Applications |
13.553 – 13.567 MHz | Inductive devices, Generic use |
Do you know what might be the problem here?