Waveguide Wiring Board With Width Transition for High-Frequency RF Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transmission lines with signal lines and waveguide-type waveguides struggle to handle higher frequency radio-frequency signals effectively.
Innovation Solution
A wiring board design featuring a signal line and waveguide-type waveguide with specific width variations and coupling configurations, including wider end parts and symmetrical shapes, to enhance signal transmission capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional transmission line with uniform waveguide width is used, then the structure is simple and easy to manufacture, but it cannot effectively transmit higher frequency radio-frequency signals
Solution Approach 1:
The waveguide structure transitions from a uniform width design to a non-uniform width design, where the width varies along the signal transmission direction. Specifically, the waveguide has a wider second end part and a narrower intermediate part, creating local quality variations that improve impedance matching and signal transmission characteristics at higher frequencies while maintaining overall structural simplicity
Solution Approach 2:
The patent changes the geometric parameter of the waveguide width along its length. By making the width Wa at the second end part larger than the width Wb at the intermediate part, the waveguide impedance varies progressively, which improves signal transmission at higher frequencies without requiring complex multi-component structures
2Reliability
If the waveguide width is increased at the end part to improve signal transmission, then the transmission characteristics improve, but the manufacturing precision requirements increase
Solution Approach 1:
The waveguide width transition is designed with a gradual curved profile rather than abrupt changes. The width transitions smoothly from the intermediate part to the end part, creating a continuous impedance transformation that reduces reflection and improves transmission characteristics while being more tolerant to manufacturing variations
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 design allows for improved radio-frequency signal transmission at higher frequencies with better reflection and transmission characteristics.
Implementation Method 1
a transmission line with a signal line and a waveguide-type waveguide coupled to one another and adaptable for a higher frequency
Data Source
Figure 1A~1D
Figure 2A~2B
Figure 3A~3B
AI summary
A wiring board includes a base body, a signal line located at the base body, and a waveguide of a waveguide-type located at the base body. The signal line includes a first end part that is one end of the signal line in a signal transmission direction. The waveguide includes a second end part that is one end of the waveguide in the signal transmission direction, a center part in the signal transmission direction, and an intermediate part on a side of the second end part closer to the center part. The first end part and the second end part are coupled to one another. A width of the waveguide at the second end part is wider than a width of the waveguide at the intermediate part.