Dielectric Waveguides for High-Speed Data Transfer
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Solution Overview
Problem
Current interconnect solutions for high-speed data transfer in server and HPC platforms face challenges with increasing data rates, as traditional electrical connections become costly and power-hungry, while optical solutions incur a power and cost penalty for short to medium distances, and aligning millimeter-wave signal launchers with waveguides is complex due to varying waveguide shapes and tight space constraints.
Innovation Solution
The use of millimeter-wave transceivers paired with dielectric waveguides for RF and mm-Wave communication between semiconductor packages, employing modular side radiating waveguide launchers and serializer/deserializers to efficiently couple high-frequency signals into waveguides, which are adaptable to various waveguide shapes and layouts, thereby minimizing energy loss and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional electrical connections are used for high-speed data transfer, then data transfer rates can be achieved, but cost and power consumption increase significantly
Solution Approach 1:
The patent replaces traditional electrical cable connections with a waveguide-based transmission system that uses electromagnetic waves (mm-Wave) for signal transmission. This substitution eliminates the need for high-speed electrical cables and their associated equalization circuits, thereby reducing power consumption while maintaining high data transfer rates over extended distances
Solution Approach 2:
The patent transitions from lower frequency electrical signals to millimeter-wave frequency electromagnetic signals for data transmission. This parameter change in signal frequency enables the use of waveguide transmission, which offers lower loss and reduced power consumption for high-speed data transfer over distances exceeding the capabilities of traditional electrical interconnects
2Length of stationary object
If optical solutions are used for long-distance communication, then reach and bandwidth are improved, but power consumption and cost increase for short to medium distances
Solution Approach 1:
The patent employs millimeter-wave frequency electromagnetic signals as an alternative to optical signals for short to medium distance communication. This parameter change in transmission medium and frequency enables achieving communication distances of several meters with lower power consumption compared to optical solutions, while avoiding the limitations of traditional electrical connections
3Loss of energy
If millimeter-wave signal launchers are aligned with waveguides, then signal transmission efficiency is improved, but alignment complexity increases due to varying waveguide shapes and tight space constraints
Solution Approach 1:
The patent employs adjustable and reconfigurable signal launcher structures that can dynamically adapt their position and orientation to match different waveguide configurations. This dynamic adjustment capability enables optimal alignment with various waveguide shapes (rectangular, circular, triangular) while maintaining signal transmission efficiency, thereby reducing alignment complexity in tight space constraints
Solution Approach 2:
The patent designs a universal signal launcher structure that can interface with multiple waveguide types and configurations through adjustable mechanisms. This universal design enables the same launcher structure to achieve optimal alignment with rectangular, circular, triangular, and other waveguide shapes, thereby reducing overall system complexity and facilitating easier integration across different applications
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient, cost-effective, and power-efficient radio frequency and millimeter-wave communication systems for distances up to 10 meters or more, supporting data transfer rates exceeding 25 Gbps with reduced energy loss and improved alignment precision.
Implementation Method 1
dielectric waveguides for RF and mm-Wave communication between semiconductor packages
Data Source
AI summary
Radio frequency (RF) data transfer between components in rack mounted systems is facilitated through the use of dielectric waveguides and millimeter Wave (mm-Wave) transceivers. A signal generator provides one or more data signals to a serializer/deserializer (SERDES) which serializes a plurality of parallel data signals to produce a single, serialized, signal containing data from each of the input signals to the SERDES. A mm-Wave die upconverts the serialized signal to a mm-Wave signal and a mm-Wave launcher launches the signal into the dielectric waveguide. At the receiving end the process is reversed such that the mm-Wave signal is first downconverted and passed through a SERDES to provide the original one or more signals to a recipient signal generator. Some or all of the components may be formed directly in the semiconductor package.