How to isolate power supply noise in a power DTU wireless module?

To isolate power supply noise in the DTU wireless module, multi-stage filtering and independent power supply are required. A separate LDO regulator should be provided for the wireless module, with PBZ1608A-102Z0T ferrite beads and capacitors (100nF + 10μF) deployed at the input and output. Power supply traces should be wide and short to reduce voltage drop. A decoupling capacitor (100pF) should be added near the power supply pins of the wireless module. Power supply noise, measured with an oscilloscope, should be less than 50mVpp. Isolating power supply noise prevents noise modulation from affecting RF performance and improves communication quality.