Rectangular Solid Dielectric Waveguide With External Power Lines
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Solution Overview
Problem
Existing waveguides for microwaves and millimeter waves cannot have a rectangular cross-sectional profile, limiting their design flexibility and reliability for power transmission.
Innovation Solution
A waveguide with a solid dielectric having a rectangular cross-section, featuring a pair of power supplying lines on the outside and an external conductor that surrounds the dielectric, allowing for slidable contact without bonding, which enhances flexibility and manufacturing simplicity while reducing transmission loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a conventional waveguide structure with a conductive wire surrounded by dielectric is used, then electromagnetic wave transmission is achieved, but the cross-sectional profile cannot be rectangular
Solution Approach 1:
The waveguide is segmented into distinct functional components: a rectangular solid dielectric for wave confinement, external conductors for boundary definition, and separate power supplying lines for energy transmission. This segmentation allows each component to be optimized independently, enabling a rectangular cross-sectional profile while maintaining electromagnetic wave transmission capability.
Solution Approach 2:
The invention transitions from a conventional cylindrical or irregular cross-sectional profile to a rectangular cross-section by repositioning power supplying lines to the outside in the longitudinal direction. This dimensional reconfiguration allows the dielectric to maintain a rectangular profile, improving adaptability for rectangular waveguide applications.
2Adaptability or versatility
If the dielectric is made flexible to improve adaptability, then bending flexibility is enhanced, but material cracking may occur under external forces
Solution Approach 1:
The solid dielectric is designed with a rectangular cross-section that can be made from flexible materials, allowing the waveguide to bend without cracking. The external conductors and power supplying lines are configured to accommodate this flexibility while maintaining electrical connectivity and electromagnetic shielding.
Solution Approach 2:
The external conductors surrounding the rectangular dielectric provide structural support and protection against external forces that could cause material cracking. This protective configuration allows the dielectric to be more flexible while maintaining reliability under stress.
3Power
If power supplying lines are placed inside the dielectric, then power transmission is achieved, but the configuration becomes complex and manufacturing cost increases
Solution Approach 1:
The power supplying lines are extracted from the interior of the dielectric and repositioned to the outside in the longitudinal direction. This extraction simplifies the internal structure of the dielectric, making it easier to manufacture with a precise rectangular cross-section while maintaining power transmission capability through the external lines.
Solution Approach 2:
The external conductors serve multiple functions: they provide electromagnetic shielding, define the waveguide boundary, and support the power supplying lines. This multi-functionality reduces the need for additional internal structures, simplifying the overall configuration and reducing manufacturing complexity.
4Ease of manufacture
If the dielectric is surrounded by an external conductor with slidable contact, then manufacturing simplicity and cost are reduced, but contact stability must be maintained
Solution Approach 1:
The contact between the external conductor and the rectangular dielectric is designed to be slidable rather than fixed, allowing relative movement along the longitudinal direction. This dynamic contact arrangement simplifies manufacturing by eliminating the need for precise bonding while maintaining electrical connectivity and electromagnetic shielding through continuous contact.
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 solution enables stable and efficient transmission of electromagnetic waves with reduced costs and increased reliability, maintaining flexibility and preventing material cracking under external forces.
Implementation Method 1
a solid dielectric having a rectangular cross-section... Electromagnetic waves can be transmitted while confined to the dielectric
Implementation Method 2
Power can also be transmitted by applying direct current voltage between the solid conductor and the other conductor
Implementation Method 3
an external conductor surrounding the dielectric; the outer surface of the dielectric being slidably in close contact with the inner surface of the external conductor
Data Source
AI summary
The present disclosure enhances flexibility, enables the transmission of power, and improves reliability using a simple, low-cost, easy-to-manufacture configuration by disposing a pair of power supplying lines on the outside in the longitudinal direction of the rectangular cross-section of a dielectric. Here, a waveguide is provided with a solid dielectric, a pair of power supplying lines and an external conductor surrounding the dielectric. The solid dielectric has a rectangular cross-section. The pair of power supplying lines are disposed on the outside in the longitudinal direction of the cross-section of the dielectric. The outer surface of the dielectric is slidably in close contact with the inner surface of the external conductor.