Dielectric Groove Waveguide Signal Confinement
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Solution Overview
Problem
Conventional waveguides dissipate signals according to the inverse square law when expanding into three-dimensional space, leading to energy loss, and existing solutions for high-frequency applications are often complex and costly, requiring additional metallic conductors.
Innovation Solution
A dielectric groove waveguide with a recess on a conductive chassis, filled with dielectric material, that confines electromagnetic energy, allowing signal propagation without additional metallic conductors, suitable for high-frequency applications up to 20 GHz frequencies, and can be easily integrated into device structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional waveguides allow signal expansion into three-dimensional space, then signal propagation is achieved, but energy loss increases according to the inverse square law
Solution Approach 1:
The patent transitions from three-dimensional space expansion to two-dimensional surface propagation by confining the electromagnetic signal to travel along the surface of the conductive chassis. This dimensional change prevents the inverse square law from applying, thereby reducing energy loss while maintaining signal propagation capability.
Solution Approach 2:
The conductive chassis surface acts as an intermediary medium that guides the electromagnetic signal. By using the chassis surface as a waveguide, the signal is constrained to propagate along this intermediate surface rather than expanding freely into three-dimensional space, thus reducing energy dissipation.
2Reliability
If additional metallic conductors are used for high-frequency signal transmission, then signal integrity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The conductive chassis serves multiple functions: it provides structural support for the device and simultaneously acts as a waveguide for high-frequency signal transmission. This eliminates the need for separate metallic conductors, reducing device complexity while maintaining signal integrity through the chassis surface propagation.
Solution Approach 2:
The patent merges the structural chassis with the signal transmission function by using the chassis surface itself as the waveguide. This consolidation eliminates the need for additional metallic conductors, simplifying the device structure while ensuring reliable high-frequency signal transmission along the chassis surface.
3Loss of energy
If coaxial cables are used for signal transmission in compact devices, then signal loss is reduced, but device miniaturization is limited
Solution Approach 1:
The patent transitions from three-dimensional coaxial cable structures to two-dimensional surface propagation along the chassis. This dimensional change enables signal transmission without requiring the bulky coaxial cable structure, allowing device miniaturization while maintaining low signal loss through surface-confined electromagnetic propagation.
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 dielectric groove waveguide effectively concentrates electromagnetic energy, reducing signal loss and enabling miniaturization by eliminating the need for coaxial cables, while being cost-effective and simple to manufacture, suitable for devices like smartphones and wearables.
Implementation Method 1
A dielectric groove waveguide includes a groove, or a recess, on a conductive chassis with dielectric material filled inside
Data Source
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AI summary
An electrical device is disclosed, comprising a conductive chassis having a groove, wherein the conductive chassis comprises a housing or a frame of the electrical device; and dielectric material filled inside the groove; wherein the groove is configured as a waveguide and transmits a signal of the electrical device. This type of waveguide is also known as Inset Dielectric Guide, or IDG.