Dielectric Loaded Metallic Resonator With Compressed Spacer
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Solution Overview
Problem
Cavity resonators face challenges in achieving optimal capacitive coupling between the central conductive rod and the cavity walls due to air gaps and the need for secure assembly of dielectric spacers, which can affect the resonator's performance and assembly efficiency.
Innovation Solution
A dielectric-loaded cavity resonator design featuring a conductive cylindrical post with a void, a dielectric rod, and a resilient dielectric material, such as an O-ring or foam, that is compressed between the dielectric rod and the floor, creating a restoring force to hold the dielectric spacer in place and eliminate air gaps, thereby ensuring effective capacitive coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dielectric spacer is used to achieve optimal capacitive coupling between the central conductive rod and cavity walls, then the resonator performance is improved, but the assembly complexity increases due to the need to secure the dielectric spacer in place
Solution Approach 1:
The patent employs a resilient dielectric material that acts as a flexible element to secure the dielectric spacer. This resilient material can be compressed and deformed to fit into the assembly, providing mechanical retention without requiring additional fasteners or complex securing mechanisms, thus improving capacitive coupling while maintaining simple assembly
Solution Approach 2:
The resilient dielectric material serves as an intermediary element between the dielectric spacer and the cavity structure. It mediates the mechanical connection, allowing the dielectric spacer to be held in place through compression and elastic recovery, eliminating the need for separate securing components and simplifying the overall assembly process
2Ease of manufacture
If air gaps are present in the cavity resonator assembly, then the manufacturing process is simpler, but the resonator performance deteriorates due to suboptimal capacitive coupling
Solution Approach 1:
The resilient dielectric material acts as a flexible element that can be compressed to eliminate air gaps between components. By deforming this resilient material during assembly, the design achieves intimate contact between the dielectric spacer and cavity walls, ensuring optimal capacitive coupling while maintaining simple assembly procedures
Solution Approach 2:
The patent utilizes the compressibility parameter of the resilient dielectric material to eliminate air gaps. By applying compression force during assembly, the material's density and contact pressure increase, eliminating voids and ensuring optimal electrical contact without complicating the manufacturing process
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
This design enhances capacitive coupling and assembly efficiency by immobilizing the dielectric spacer and maintaining a desired electrical characteristic, improving the resonator's performance and assembly process.
Implementation Method 1
A resilient dielectric is located within the void between the dielectric spacer and the floor, and in some embodiments may be compressed between the floor and the cover to provide a restoring force that holds the dielectric spacer in place
Implementation Method 2
A dielectric rod is located within the void. A dielectric spacer is located between the cover and the cylindrical post
Data Source
AI summary
An apparatus, e.g. a cavity resonator, includes a floor and a cover. A conductive post is located between the floor and the cover and has a void oriented along a longitudinal axis of the post. A dielectric spacer is located between the cover and the post and a dielectric rod is located within the void. A resilient dielectric is located within the void between the dielectric spacer and the floor.