Waveguide Connecting Tube Alignment for Low-Leakage Interfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-frequency waveguide interfaces are sensitive to misalignment and leakage due to decreasing dimensions, leading to significant degradation of return loss, and existing solutions like RF gaskets are costly and inefficient.
Innovation Solution
A waveguide interface comprising a connecting tube with chamfered ends and edge tapers for alignment, and an electrically conductive paste to reduce leakage, eliminating the need for RF gaskets and enhancing electrical and mechanical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If waveguide dimensions are decreased for high-frequency applications, then operating frequency is improved, but alignment sensitivity and return loss degradation worsen
Solution Approach 1:
The waveguide connecting tube incorporates guiding pins at its ends before insertion into the waveguide apertures. These guiding pins protrude from the tube ends and are designed to engage with corresponding features in the apertures, pre-establishing the correct alignment position before the main body of the tube is fully inserted. This preliminary alignment action prevents misalignment during assembly and operation at high frequencies.
2Adaptability or versatility
If multiple waveguide interfaces are used, then connectivity is improved, but accumulated misalignment and return loss degradation worsen
Solution Approach 1:
The waveguide connecting tube serves as an intermediary component between multiple waveguide sections. It features guiding pins at both ends that engage with corresponding waveguide apertures, acting as a mediator that ensures precise alignment across multiple interfaces. This intermediary structure with integrated guiding pins eliminates accumulated misalignment that would otherwise occur when directly connecting multiple waveguide sections, thereby maintaining low return loss across the entire assembly.
3Object-affected harmful factors
If RF gaskets are used to counteract gaps, then leakage is reduced, but cost and device complexity increase
Solution Approach 1:
The invention extracts and eliminates the need for separate RF gasket components by integrating the gap-closing function directly into the waveguide connecting tube structure. The tube is designed with features that enable it to effectively counteract gaps between waveguide sections without requiring additional gasket materials or components. This extraction of the gap-closing function from a separate component and integration into the main tube simplifies the overall device structure while maintaining leakage protection.
Data Source
AI summary
The present disclosure relates to a waveguide interface comprising a first waveguide aperture, provided in a first waveguide device, a second waveguide aperture, provided in a second waveguide device, and a waveguide connecting tube having a longitudinal extension and comprising waveguide walls and a connecting waveguide aperture for transfer of microwave signals. The waveguide connecting tube comprises a first end that is adapted to be at least partly inserted into the first waveguide aperture, and a second end that is adapted to be at least partly inserted into the second waveguide aperture, such that the first waveguide aperture and the second waveguide aperture are electrically connected via the waveguide connecting tube.