Dielectric Waveguide Geometry for Low-Leakage Radar Mounting
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Solution Overview
Problem
Waveguides, particularly dielectric waveguides, experience RF wave leakage and spurious reflections due to supports or holders, which are necessary for structural support above a certain length.
Innovation Solution
Designing a dielectric waveguide with a first section of uniform cross-section and a second section with a larger cross-section, allowing for the arrangement of supports, and using injection molding for efficient and cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If supports or holders are arranged on the waveguide to provide structural support, then the waveguide can maintain its shape and position, but RF waves leak out and spurious reflections occur
Solution Approach 1:
The patent extracts the support function from external holders and integrates it into the waveguide structure itself through the flared second section. This eliminates the need for separate support components that would interfere with RF waves, while still providing the necessary structural support and positioning functionality.
Solution Approach 2:
The patent merges the support function with the waveguide structure by designing the flared second section to provide both structural integrity and mounting capability. This combination eliminates the harmful effects of separate support components while maintaining both structural support and RF wave transmission functions.
2Object-affected harmful factors
If a waveguide has a larger cross-sectional area to reduce sensitivity to external influences, then susceptibility to interference decreases, but signal attenuation increases
Solution Approach 1:
The patent divides the waveguide into two distinct sections: a first section with smaller cross-section for low signal attenuation, and a second section with larger cross-section for reduced susceptibility to external influences. This segmentation allows each section to optimize for its specific function while working together as a complete system.
Solution Approach 2:
The patent applies different cross-sectional dimensions to different parts of the waveguide based on local requirements. The first section has a smaller cross-section optimized for signal transmission with low attenuation, while the second section has a larger cross-section optimized for reduced sensitivity to external influences and integrated support structures.
3Loss of energy
If the waveguide has a uniform cross-section to maintain low signal attenuation, then signal loss is minimized, but the waveguide becomes more sensitive to external influences and requires separate support components
Solution Approach 1:
The patent segments the waveguide into two functional sections: the first section maintains a uniform smaller cross-section for low signal attenuation, while the second section transitions to a larger cross-section that provides both reduced susceptibility to external influences and integrated support functionality.
Solution Approach 2:
The patent introduces a dimensional change in the waveguide cross-section along its length, transitioning from a smaller first section to a larger second section. This dimensional variation allows the waveguide to simultaneously achieve low signal attenuation in the first section and reduced susceptibility to external influences with integrated support in the second section.
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
Minimizes interference from waveguide mounts, reduces signal attenuation, and improves radar system performance by optimizing electric field distribution and reducing reflections.
Implementation Method 1
a dielectric waveguide for propagating radio frequency waves
Implementation Method 2
transmit a high-frequency signal
Data Source
AI summary
A dielectric waveguide for propagating high-frequency waves is provided, the dielectric waveguide including a first section having a substantially uniform cross-section; and a second section having a larger cross-section than the first section. A method of manufacturing a dielectric waveguide is also provided. A dielectric waveguide assembly is also provided. A radar device is also provided, including the dielectric waveguide or a dielectric waveguide arrangement including the dielectric waveguide and a holder that at least partially surrounds the dielectric waveguide.