In-line Connector Assembly for mm-wave Waveguides
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Solution Overview
Problem
Existing communication systems for in-car networks face challenges in efficiently transmitting millimeter-wave signals over sharp bends and in environments with severe noise and limited space, requiring high data rates and robust Electro-Magnetic Compatibility (EMC) while maintaining low cost and reliability.
Innovation Solution
The use of waveguides with varying dielectric constants and guiding adapters with periodic arrays of electrically-conductive elements to confine and guide millimeter-wave signals, along with in-line connector assemblies that form non-interrupted arrays of conductive elements to reduce signal loss and improve EMC, even in the presence of mechanical misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional waveguide connections are used, then mechanical alignment is simple, but signal loss increases and EMC performance deteriorates
Solution Approach 1:
The connector assembly is divided into two separate connector bodies (first connector body and second connector body) that can be independently manufactured and aligned. Each connector body contains its own array of conductive elements, allowing for modular assembly that reduces signal loss while maintaining manageable complexity through standardized interfaces.
Solution Approach 2:
The first and second connector bodies act as intermediary components between waveguide sections, providing a controlled transition zone with periodic arrays of conductive elements. These intermediaries enable smooth signal propagation and electromagnetic field continuity, reducing signal loss and improving EMC performance compared to direct rigid connections.
2Manufacturing precision
If connector bodies are held in physical contact, then alignment precision is high, but manufacturing complexity and cost increase
Solution Approach 1:
The mechanical attachment mechanism serves multiple functions: it holds the connector bodies in proximity, maintains proper spacing for electromagnetic coupling, and provides alignment features. This multi-functional design achieves high alignment precision without requiring complex assembly procedures or specialized manufacturing processes.
Solution Approach 2:
The design transitions from requiring physical contact between connector bodies to maintaining a controlled spacing relationship. This parameter change (from contact to proximity coupling) reduces manufacturing complexity and assembly difficulty while maintaining alignment precision through the periodic array structure and mechanical attachment features.
3Reliability
If non-interrupted arrays of conductive elements are formed, then electrical-field confinement improves, but tolerance to misalignment decreases
Solution Approach 1:
The periodic array structure provides dynamic adaptability to misalignment through its distributed conductive elements. When misalignment occurs, multiple elements across the array maintain effective coupling, allowing the system to dynamically adapt to position variations while preserving overall electrical-field confinement. This is more resilient than a single continuous structure.
Solution Approach 2:
Different regions of the periodic array provide different functions: central elements provide strong field confinement when aligned, while peripheral elements provide tolerance to misalignment. This local quality variation across the array structure enables simultaneous achievement of good electrical-field confinement and misalignment tolerance.
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 results in low-loss, high-reliability millimeter-wave communication systems with improved electrical-field confinement and tolerance to misalignment, enabling efficient data transmission over sharp bends and in noisy environments, with reduced manufacturing complexity and cost.
Implementation Method 1
The first connector body has a first longitudinal axis and includes a first sub-array of electrically-conductive elements disposed at periodic intervals along the first longitudinal axis. The second connector body has a second longitudinal axis and includes a second sub-array of electrically-conductive elements disposed at periodic intervals along the second longitudinal axis.
Implementation Method 2
The mechanical attachment mechanism is configured to align the first longitudinal axis and the second longitudinal axis, to thereby jointly form from the first sub-array and the second sub-array a non-interrupted array of the electrically-conductive elements that guides the millimeter-wave signal
Data Source
AI summary
A networking system includes a transmitter, a waveguide and a receiver. The transmitter is configured to generate a millimeter-wave signal carrying data. The waveguide is transmissive at millimeter-wave frequencies and is configured to receive the millimeter-wave signal from the transmitter, and to guide the millimeter-wave signal from the transmitter to a downstream location by having a dielectric constant that varies over a transversal cross-section of the waveguide in accordance with a predefined profile. The receiver is configured to receive the millimeter-wave signal guided by the waveguide, and to extract the data carried by the received millimeter-wave signal.