Client C encountered technical challenges while developing a new type of ECG monitor. The device requires real-time processing and monitoring of cardiac signals, demanding high PCB performance, especially in signal integrity and long-term stability.

The existing ECG monitor's PCB exhibited signal interference and occasional data loss, potentially impacting the instrument's accuracy and reliability, posing potential risks to patient health.

We conducted a detailed analysis of the issues and found that signal distortion mainly stemmed from certain design flaws in the PCB, such as improper routing layout and insufficient grounding measures. To address these issues, we proposed the following improvements:

- Optimizing Routing Layout:Redesigning the circuit layout to ensure sensitive signal traces are kept away from potential interference sources and using short, direct paths to reduce signal attenuation.

- Enhancing Grounding and Shielding:Introducing multilayer grounding planes and adding shielding layers to provide better signal integrity and reduce electromagnetic interference.

Following these improvements, the redesigned PCB demonstrated excellent signal integrity and stability during rigorous testing.