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fpatrice2008Nieuwkomer
geplaatst in LoRa Forum

LLCC68 PA output power level problem

Hy,Here is my configuration for the "LLCC68MB2BAS_868MHz" evaluation board from SEMTECHTest equipment :R&S FSU spectrum analyzer in SPAN = 0 modeOscilloscope: FLUKE 200MhzBattery supply 4.1V System requirements: Output power = +14dBm To obtain +14dBm RF output, the configuration found is :Padc (paDutyCycle)= 3Pahpm (hpMax)=3Txdbm (SetTxParams)= 22 regModParam default =1 (DC-DC + LDO) Observation of the power envelope of frames transmitted after board power-up. Frames                         Pout start         Pout end          DeviationView burst n° 1            7.5 dBm              11.7 dBm            4.2 dBView burst n° 2            11.5 dBm            13.3 dBm            1.8 dBView burst n° 3            12.6 dBm            13.96 dBm         1.36 dBView burst n° 4            13.3 dBm            14.26 dBm         0.96 dBView burst n° 5            13.9 dBm           14.36 dBm         0.46 dB                                                                                            

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Rick S.
Community manager
3 maanden geleden

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