How to control EMI in power supply DTU 4G/5G wireless modules?

Controlling EMI in DTU 4G/5G wireless modules requires addressing power supply, RF, and shielding. Power supply: Use an LDO regulator with a PBZ1608A-102Z0T ferrite bead and decoupling capacitors (100nF + 10μF). RF: Use shielded cable for the antenna feed line, keeping it as short as possible. Add a shielding cover to the module, with multiple grounding points on the cover. On the PCB layout, keep the wireless module away from sensitive circuits and place a ground plane underneath. Optimize the design by scanning for radiated hotspots during pre-testing. Controlling EMI ensures the wireless module meets EN55032 Class B radiated emission limits, preventing interference with other devices.