Waveguide Twist Structure With Magnetic Coupling
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Solution Overview
Problem
Existing waveguide transition arrangements for high-frequency applications, such as those above 30 GHz, face challenges in achieving a good conductive contact, leading to leakage and performance losses, and require complex and costly fabrication processes, especially for millimeter-wave systems.
Innovation Solution
A waveguide twist structure utilizing a periodic or quasi-periodic texture with protruding elements, such as pins, that provides a contactless connection, reducing the need for screws or welding and allowing for a wideband performance with fewer sections, enabling easy assembly and disassembly while maintaining low reflection coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional waveguide sections are connected by screws or welding, then mechanical connection is achieved, but conductive contact quality deteriorates leading to leakage and losses
Solution Approach 1:
The patent replaces the traditional mechanical connection system (screws or welding) with a magnetic coupling system. Magnets are embedded in the waveguide sections to provide both mechanical attachment and electrical continuity through magnetic flux paths, eliminating the need for conductive screws or welding operations while maintaining signal integrity and reducing leakage losses.
2Ease of manufacture
If gap waveguide technology with pin structure is used, then contactless connection is achieved, but the number of steps increases leading to high fabrication costs
Solution Approach 1:
The patent merges the mechanical connection function and the electrical connection function into a single integrated magnetic coupling interface. The magnets simultaneously provide mechanical attachment between waveguide sections and establish electrical continuity through their magnetic flux paths, eliminating the need for separate pin structures or multiple connection steps required by gap waveguide technology.
3Adaptability or versatility
If multiple waveguide sections are used to achieve polarization rotation, then the rotation function is achieved, but the structure becomes complex and costly
Solution Approach 1:
The patent divides the waveguide into multiple sections with embedded magnets that can be independently rotated. Each section can be rotated to achieve the desired polarization rotation angle, and the magnetic coupling allows these sections to be connected and disconnected easily. This segmented approach with magnetic coupling reduces the overall complexity compared to traditional multi-section waveguide twists while maintaining the polarization rotation function.
Data Source
AI summary
A transition arrangement for interconnection of waveguide structures or waveguide flanges for forming a waveguide twist, wherein a waveguide twist section arrangement including a number of waveguide twist sections is arranged between the waveguide structures or waveguide flanges for rotating the polarization of waves or signals twisted or forming an angle with an adjacent waveguide flange and/or another adjacent waveguide twist section with respective waveguide openings. The or each twist section on at least one side includes a surface of a conductive material with a periodic or quasi-periodic structure formed by a number of protruding elements allowing waves to pass across a gap between a surface around a waveguide opening to another waveguide opening in a desired direction or waveguide paths, at least in an intended frequency band of operation, and to stop propagation of waves in the gap in other directions.