Waveguide Microstrip Converter Slot Impedance Matching
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Solution Overview
Problem
Waveguide microstrip line converters face challenges in achieving high electric performance and reliability due to issues with impedance matching and electromagnetic radiation, leading to power loss and instability in signal transmission.
Innovation Solution
The converter design includes a dielectric substrate with a ground conductor and a microstrip line, featuring a slot with varying line widths for impedance matching and a configuration that eliminates the need for through holes, reducing manufacturing complexity and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional waveguide microstrip line converter uses through holes to connect ground conductor and conductor plate, then electrical connection is achieved, but manufacturing complexity increases and reliability decreases
Solution Approach 1:
The invention extracts and eliminates the through holes from the conventional structure. By removing these through holes that connect the ground conductor and conductor plate, the patent simplifies the manufacturing process and improves reliability while maintaining the essential electrical connection function through an alternative surface-level connection structure.
Solution Approach 2:
The invention segments the connection structure into distinct surface-level components rather than requiring through-hole penetration. The ground conductor and conductor plate are connected through a simplified surface structure that divides the connection function into manageable segments, reducing manufacturing complexity.
2Loss of energy
If the line conductor has uniform line width, then manufacturing is simple, but impedance matching between sections is poor leading to power loss
Solution Approach 1:
The invention applies local quality by varying the line width of the line conductor at specific locations. The second line width is designed to be greater than the first line width in the region above the slot, creating localized impedance transformation zones that improve power transfer efficiency while maintaining uniform width in other regions for manufacturing simplicity.
3Ease of manufacture
If the converter structure is simplified without through holes, then manufacturing is easier, but electrical connection stability may be compromised
Solution Approach 1:
The invention introduces an intermediary connection structure that mediates between the ground conductor and conductor plate without requiring through holes. This intermediate surface-level connection mechanism ensures electrical stability while enabling easier manufacturing processes.
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 design achieves stable and high electric performance by reducing power loss and electromagnetic radiation, improving reliability and simplifying manufacturing processes.
Implementation Method 1
a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section
Data Source
AI summary
A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.