Waveguide With Bulging Dielectric Sides For Stable Transmission
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Solution Overview
Problem
Conventional waveguides with a square cross-sectional profile cannot effectively transmit high-frequency waves due to gaps between the dielectric rod and the metal tape, leading to unstable transmission loss and inability to stably transmit electromagnetic waves in higher frequency bands.
Innovation Solution
A waveguide design where the dielectric's long sides bulge outward, allowing the dielectric to closely adhere to the outer conductor, reducing gaps and stabilizing transmission loss, and simplifying manufacturing and configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal tape is wound around a dielectric rod with a rectangular cross-sectional profile, then the waveguide can be constructed, but gaps occur between the tape and the dielectric surface on the long sides, causing unstable transmission loss and inability to stably transmit high-frequency waves
Solution Approach 1:
The dielectric is designed with a curved cross-sectional profile where the long sides bulge outward in a convex shape rather than being flat. This curvature allows the metal tape to conform closely to the dielectric surface, eliminating gaps and ensuring stable transmission of high-frequency electromagnetic waves while maintaining ease of construction through simple tape wrapping
2Ease of manufacture
If metal tape is wound tightly around a dielectric rod with a rectangular cross-sectional profile, then the waveguide structure is formed, but small gaps still occur on the long sides, increasing device complexity and reducing manufacturing precision
Solution Approach 1:
The dielectric features a convex curved profile on its long sides that naturally guides the metal tape to conform closely during the winding process. This curvature design maintains the simplicity of tape-wrapping construction while achieving tight fit and eliminating gaps, thus preserving ease of manufacture without sacrificing precision
3Reliability
If a conventional square cross-sectional waveguide is used, then the structure is simple, but it cannot effectively transmit high-frequency waves due to gaps between the dielectric and outer conductor
Solution Approach 1:
The dielectric cross-section is modified to have convex curved long sides instead of straight edges, creating a shape that is slightly more complex than a square but still simple to manufacture. This curvature enables the metal tape to conform closely, eliminating gaps and enabling effective transmission of high-frequency electromagnetic waves
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 stabilizes electromagnetic wave transmission, reduces costs, and improves reliability by eliminating gaps between the dielectric and the outer conductor, enabling stable transmission of microwaves and millimeter waves.
Implementation Method 1
the dielectric comprises a first dielectric, and a second dielectric laminated on both sides of the first dielectric. In another waveguide of the Present Disclosure, the refractive index of the first dielectric is greater than the refractive index of the second dielectric.
Data Source
AI summary
The waveguide is composed of a solid dielectric, and an outer conductor covering the periphery of the dielectric, the transverse section of the dielectric being rectangular and having a shape bulging outward on the pair of long sides, and the inner surface of the outer conductor adhering closely to the outer surface of the dielectric.