Ridge Waveguide Transition Device for Compact PCB Integration
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Solution Overview
Problem
Conventional transmission line-waveguide transition devices require additional bending structures to align waveguides parallel to printed circuit board (PCB) transmission lines, resulting in increased complexity and volume, and suboptimal signal transmission performance.
Innovation Solution
A compact transition device with a plate-shaped ridge structure that contacts the transmission line at a gentle angle, allowing direct signal transfer to a waveguide without additional bending, and is mounted on a substrate with a ground surface for improved stability and reduced loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional transition devices use perpendicular connection between transmission line and waveguide, then signal transmission is achieved, but additional bending structures are required increasing device complexity and volume
Solution Approach 1:
Instead of connecting the waveguide perpendicularly to the transmission line as in conventional designs, this invention inverts the approach by making the waveguide parallel to the transmission line. The ridge structure extends from the transmission line interface directly into the waveguide in a collinear manner, eliminating the need for 90-degree bending structures and reducing overall device complexity while maintaining signal transmission performance
2Shape
If conventional transition devices add bending structures to align waveguide parallel to PCB, then alignment is improved, but device volume and thickness increase
Solution Approach 1:
This invention merges the transmission line interface and waveguide into a single collinear structure. The ridge of the waveguide extends directly from the transmission line interface, combining what were previously separate components requiring alignment into one integrated structure. This eliminates the need for additional bending structures and reduces device volume and thickness
3Ease of manufacture
If conventional transition devices use perpendicular connection, then connection is achieved, but additional bending structures increase manufacturing complexity
Solution Approach 1:
By inverting the conventional perpendicular connection approach to a parallel collinear connection, the invention simplifies the manufacturing process. The ridge structure can be directly formed extending from the transmission line interface into the waveguide without requiring complex bending operations, reducing both manufacturing and structural complexity
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
The solution enables a simpler, more compact design with reduced thickness, higher stability, and lower signal loss, facilitating faster assembly and universal applicability to various PCB transmission lines.
Implementation Method 1
a transmission line-waveguide transition device for connecting a printed circuit board (PCB) type transmission line with a cavity type waveguide
Data Source
AI summary
Disclosed is a transmission line-waveguide transition device including side surfaces and a top surface having a size and shape corresponding to a waveguide to which a signal of a transmission line is transmitted, the side surfaces and top surface having a plate shape; and a plate-shaped ridge formed in an inner space defined by the side surfaces and the top surface, the ridge being provided with a slope having one end connected to the transmission line and an opposite end contacting the top surface.