Millimeter-Wave Dielectric Waveguide Couplers for Low-Latency Sensor Interconnects
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Solution Overview
Problem
Current interconnect solutions for autonomous and self-driving vehicles, such as electrical and optical cables, fail to meet the requirements of high data-rate, low latency, and low power consumption, especially in short to medium distances, due to increased power consumption, latency, and cost issues.
Innovation Solution
The implementation of millimeter-wave waveguide interconnects with a dielectric waveguide bundle and wavelength-selective coupling arms in a ring architecture, which provides low power, low latency, and high-speed data transfer without the need for signal up-conversion or error correction, reducing power consumption and latency compared to traditional solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If electrical interconnects (ethernet cables) are used to increase data rate, then bandwidth is improved, but power consumption increases and latency increases
Solution Approach 1:
The patent replaces traditional electrical cable-based interconnects with mm-wave waveguide interconnects. This substitution eliminates the need for multiple electrical lanes and associated signal conditioning equipment, thereby reducing power consumption while maintaining high data rates through electromagnetic wave propagation in the mm-wave frequency range.
Solution Approach 2:
The patent transitions from lower frequency electrical signaling to mm-wave frequency range (30-300 GHz). This parameter change in operating frequency enables higher data rates through increased bandwidth availability, while the waveguide structure maintains efficiency and reduces power consumption compared to extended electrical cable systems.
2Speed
If optical interconnects are used to achieve high data rates, then bandwidth is improved, but power consumption increases and alignment precision requirements increase
Solution Approach 1:
The patent replaces optical fiber interconnects with mm-wave waveguide interconnects. This substitution eliminates the need for precise optical alignment and conversion mechanisms, reducing manufacturing complexity and precision requirements while achieving comparable high data rates through electromagnetic propagation in the mm-wave range.
3Speed
If multiple electrical lanes are used to increase data rate, then bandwidth is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple electrical lanes into a single mm-wave waveguide interconnect. By consolidating what would require multiple separate electrical cables and signal processing channels into one unified waveguide structure, the system achieves equivalent or higher bandwidth with reduced complexity in cabling, connectors, and signal conditioning equipment.
4Speed
If optical interconnects are used for short to medium distances, then data rate is improved, but cost increases
Solution Approach 1:
The patent employs mm-wave waveguide interconnects that provide high-speed data transmission at lower cost compared to optical solutions for short to medium distances. The waveguide structure uses conventional materials and manufacturing techniques rather than expensive optical components, making it economically viable for automotive applications where cost sensitivity is high.
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 solution offers a low-cost, low-latency, and high-speed data transfer method that is more reliable and efficient than existing technologies, capable of supporting increased data rates without the need for additional amplification or error correction, making it suitable for future vehicle modifications.
Implementation Method 1
a first dielectric waveguide communicatively coupled to the ECU; a plurality of coupling arms coupled to the first dielectric waveguide at different angles
Implementation Method 2
Each of the plurality of coupling arms is configured to couple a different frequency band from the first dielectric waveguide to a corresponding sensor
Data Source
AI summary
Embodiments include a wavelength selective communication system for use in vehicles. In an embodiment, the communication system may include a primary dielectric waveguide having a first cross-sectional area. In an embodiment, a coupling arm dielectric waveguide may be communicatively coupled to the primary dielectric waveguide. In an embodiment, the coupling arm has a second cross-sectional area that is smaller than or equal to the cross-sectional area of the first cross-sectional area. According to an embodiment, the coupling arm is communicatively coupled to the primary dielectric waveguide by a waveguide connector.