How to improve the EMI immunity of PLC carrier receiver sensitivity?

Improving the sensitivity and EMI immunity of power line carrier PLC receivers requires attention to front-end design and digital processing. The receiver front-end uses a low-noise amplifier (LNA) with a noise figure less than 2dB, combined with a bandpass filter to suppress out-of-band interference. A differential input structure is employed, along with a common-mode inductor CML3225A-510T, to improve the common-mode rejection ratio. In the digital processing section, an adaptive filtering algorithm is used to cancel interference in real time. A shielding enclosure isolates the receiver circuitry, reducing radiated coupling. In actual testing, under EMI noise conditions, the receiver sensitivity can reach -110dBm, with a bit error rate below 10^-5. This EMI-resistant design allows the receiver to operate stably in harsh environments, increasing communication distance.