Dielectric Waveguide Design for Reduced Losses and Polarisation
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Summary
Problems
Dielectric waveguides face challenges in transmitting linearly polarized waves with reduced dielectric losses, particularly in the millimeter wave band, due to high dielectric losses associated with the field intensity at the center of circular and elliptical structures, which complicates polarisation maintenance and increases attenuation.
Innovation solutions
A dielectric waveguide design featuring a fibre core formed by the intersection of two fibre cores with a sheath, where the fibre core has a higher dielectric constant than the sheath, allowing for linearly polarized wave transmission with reduced losses by positioning the tensile threads outside high field intensity areas, and optionally including a foil screen and outer sleeve for electromagnetic compatibility and environmental protection.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a circular or elliptical fibre core structure is used, then the waveguide can be manufactured by extrusion methods, but the field intensity is maximum at the center where tensile threads are located, leading to high dielectric losses
Why choose this principle:
The fibre core is segmented into two separate fibre cores instead of a single circular or elliptical core. This segmentation allows the tensile threads to be positioned in the spaces between the two cores, away from the high field intensity regions, thereby reducing dielectric losses while maintaining extrusion manufacturability.
Principle concept:
If a circular or elliptical fibre core structure is used, then the waveguide can be manufactured by extrusion methods, but the field intensity is maximum at the center where tensile threads are located, leading to high dielectric losses
Why choose this principle:
The patent transitions from symmetric circular/elliptical core geometries to an asymmetric configuration with two separate fibre cores. This asymmetric arrangement creates regions of different field intensity distribution, allowing optimal positioning of tensile threads in low field intensity zones while preserving the ability to use extrusion manufacturing methods.
Application Domain
Data Source
AI summary:
A dielectric waveguide design featuring a fibre core formed by the intersection of two fibre cores with a sheath, where the fibre core has a higher dielectric constant than the sheath, allowing for linearly polarized wave transmission with reduced losses by positioning the tensile threads outside high field intensity areas, and optionally including a foil screen and outer sleeve for electromagnetic compatibility and environmental protection.
Abstract
Disclosed is a dielectric waveguide. A fibre core of the dielectric waveguide is formed by a first fibre core and a second fibre core. The first fibre core and the second fibre core have an intersection in the cross-section of the dielectric waveguide.