High-Speed Interconnect Spectral Encoding for EMI-Safe Radio Bands
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Solution Overview
Problem
High-speed wired interconnects emit electromagnetic interference (EMI) that interferes with radio receivers, causing data fidelity loss and interference with wireless signals, and existing solutions like differential signaling and shielding are either ineffective or costly.
Innovation Solution
Spectral encoding of high-speed data to reduce energy in specific frequency bands, using methods such as modifying statistical properties or scrambling data with polynomials, to minimize EMI while maintaining signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed data is transmitted over wired interconnects, then data transfer fidelity is improved, but electromagnetic interference with radio receivers worsens
Solution Approach 1:
The patent applies spectral encoding to modify the frequency domain parameters of the transmitted signal. By transforming the data signal through spectral encoding, the energy distribution across frequency bands is altered to reduce interference in protected frequency ranges while maintaining data integrity through reversible encoding/decoding processes
Solution Approach 2:
The patent segments the frequency spectrum into protected frequency bands and non-protected bands. By applying spectral encoding selectively to reduce energy in protected bands while allowing flexibility in other bands, the solution divides the frequency domain management into distinct segments with different requirements
2Object-affected harmful factors
If spectral encoding is applied to reduce EMI, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The patent replaces physical EMI reduction mechanisms (such as shielding, filtering, or spatial separation) with a signal processing approach using spectral encoding. This substitution eliminates the need for complex physical structures and instead uses algorithmic transformations in the frequency domain to achieve EMI reduction
3Object-affected harmful factors
If energy in protected frequency bands is reduced through spectral encoding, then radio signal reception is improved, but signal attenuation increases
Solution Approach 1:
The patent employs dynamic spectral encoding that can adaptively adjust the encoding parameters based on the specific protected frequency bands and signal characteristics. This dynamic approach allows optimization of the balance between EMI reduction and signal energy preservation by modifying encoding strength and frequency selection in real-time
Data Source
AI summary
Systems and methods reduce electromagnetic interference from high speed data carried by wired interconnects with a radio receiver for at least one protected radio frequency band. A spectral encoder changes the encoding of the high speed data to modify its frequency spectrum and reduce its spectral in the protected frequency band. The wired interconnect carries the spectrally encoded data to its destination, where it is spectrally decoded back to its original form. Spectral encoding may include polynomial scrambling. The data may be encoded with different coding parameters in parallel and the best result selected for communication over the wired interconnect. The coding parameters may be changed depending on which radio receivers and/or protected frequency bands are in use at any given time.