Ridge Waveguide to Partial H-Plane Transition Design
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Solution Overview
Problem
There is a need for a reliable low-loss transition component between a single ridge waveguide and a partial H-plane waveguide, as existing solutions often require separate coaxial conductors, which can limit system integration and increase size and weight.
Innovation Solution
A waveguide transition comprising a ridge waveguide section with a first ridge part and a partial H-plane waveguide section featuring an electrically conducting foil with a longitudinally running slot, allowing the two sections to overlap and connect without a separate coaxial conductor, with the foil slot enabling impedance transformation between the ridge waveguide and the partial H-plane waveguide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If coaxial conductors are used to couple partial H-plane waveguide filters, then the filter can be implemented with reduced size, but system integration is limited and additional components are required
Solution Approach 1:
The invention merges the coupling function and transition function into a single integrated waveguide transition structure. The ridge waveguide section and partial H-plane waveguide section are combined with overlapping transition sections, eliminating the need for separate coaxial conductors and reducing overall system complexity while maintaining compact size
Solution Approach 2:
The waveguide transition structure performs multiple functions simultaneously: it provides impedance transformation between different waveguide types, serves as a coupling mechanism, and enables direct waveguide-to-waveguide connection. This multi-functionality eliminates the need for separate coupling components and simplifies system integration
2Reliability
If separate coaxial conductors are used for transition between ridge waveguide and partial H-plane waveguide, then connection is achieved, but insertion loss increases and size/weight increase
Solution Approach 1:
The transition structure merges the connection function into a continuous waveguide structure with overlapping sections. This eliminates discontinuities introduced by separate coaxial conductors, reducing reflection and insertion loss while maintaining reliable connection between different waveguide types
Solution Approach 2:
The overlapping transition section acts as an intermediary between the ridge waveguide and partial H-plane waveguide sections. This gradual transition region provides smooth impedance transformation, minimizing reflections and energy loss compared to abrupt transitions using separate conductors
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 provides a reliable low-loss transition component, eliminating the need for separate coaxial conductors and enabling efficient integration of ridge waveguides with partial H-plane waveguides, while maintaining low insertion loss and reducing size and weight.
Implementation Method 1
the foil comprises a longitudinally running foil slot ending a certain edge distance before a foil edge that faces the ridge waveguide section
Implementation Method 2
the cut-off frequency of the dominant mode of the ridge waveguide is lower than that of the rectangular waveguide of the same cross section
Data Source
AI summary
A waveguide transition includes a ridge waveguide section with a first ridge part running along a first wall having a first distance to an opposing second wall. The waveguide transition comprises a partial H-plane waveguide section with an electrically conducting foil that comprises a longitudinally running foil slot ending a certain edge distance before a foil edge that faces the ridge waveguide section. The ridge waveguide section and the partial H-plane waveguide section overlap during a transition section that has a first end at a transition between the second wall and a third wall. There is a second distance between the first wall and the third wall that exceeds the first distance. The transition section has a second end where the first ridge part ends by a transversely running second ridge part that crosses the foil slot and connects to a third wall.