Low-Speed Ring Jitter Control for EMI Reduction

The patent replaces conventional physical EMI suppression components (resistors, capacitors, ferrite cores) with a digital signal processing approach. A controllable delay device introduces predetermined temporal offsets to digital signals, converting the EMI suppression mechanism from a physical/circuit-based system to a digital/control-based system. This substitution enables the technique to work in high current applications where conventional components are ineffective or inappropriate.

The patent extracts the EMI suppression function from the physical circuit layer and relocates it to the digital signal processing layer. Instead of adding physical components (resistors, capacitors, ferrite beads) to the circuit, the solution uses a controllable delay device that processes digital signals. This extraction eliminates the need for additional physical components and simplifies the overall device complexity while maintaining EMI suppression effectiveness.

The patent introduces dynamic temporal offsets to digital signals using a controllable delay device. The delay amounts are predetermined and can be adjusted, creating dynamic variations in signal timing. This dynamic approach transforms the static, fixed-time digital signals into jittered signals with spread-out spectral content, converting narrow high-amplitude PSD spikes into broader lower-amplitude distributions, thereby improving SNR while maintaining high-speed transmission capability.