
Improving DTU wireless receiver sensitivity and mitigating EMI requires optimizing the front-end and shielding. The receiver front-end uses a low-noise amplifier (LNA) with a noise figure less than 2dB. The antenna feed line is shielded, and EMI gaskets are installed at the connectors. A bandpass filter is deployed after the LNA to suppress out-of-band interference. The module is shielded, and the shield is grounded. Through actual testing, under EMI noise conditions, the receiver sensitivity should reach the module's nominal value (e.g., -110dBm). EMI mitigation design allows the wireless module to receive stably in complex electromagnetic environments.