Gapless Ferrite Assembly for Suppressing Unwanted Signal Modes
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Solution Overview
Problem
Conventional circulator or isolator structures have gaps between the ferrite component and the metal wall surface, leading to excitation of trace signals of other modes and adverse effects on high-frequency signal transmission systems, making them unsuitable for high-performance systems.
Innovation Solution
A gapless ferrite structure for circulator or isolator is designed, comprising a first base, a second base, a ferrite, limit magnets, and sealing units. The structure includes flanges and limit slots for accommodating the ferrite ends and generating an attraction force, with sealing units filling gaps to ensure a gapless signal transmission path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional ferrite component structure with gaps is used, then the structure is simple to manufacture, but gaps are formed between the ferrite component and the metal wall surface which excite trace signals of other modes and adversely affect high frequency signal transmission
Solution Approach 1:
The ferrite component is divided into a ferrite body and separate sealing units. The sealing units are independently manufactured and then assembled to the ferrite body, allowing the ferrite component itself to remain simple while the sealing function is added through a separate modular element. This segmentation enables the ferrite body to maintain its simple conventional structure while the sealing units provide the gapless sealing capability required for high-frequency performance.
Solution Approach 2:
Sealing units are introduced as intermediary elements between the ferrite component and the metal wall surface. These sealing units fill the gaps that would otherwise exist in conventional structures, preventing the excitation of trace signals. The sealing units act as a mediator that maintains electrical performance while allowing the ferrite component and metal wall to remain as separate, easily manufactured parts.
2Reliability
If a gapless structure is implemented to suppress unwanted signal modes, then electrical performance is improved, but assembly and positioning convenience must be maintained
Solution Approach 1:
The sealing units are designed with adhesive layers that create a uniform bonding interface between the ferrite body and the metal wall surface. This equipotential bonding approach ensures consistent electrical contact across the entire sealing surface, maintaining high-frequency electrical performance while providing a simple assembly process where the sealing units are merely adhered to the ferrite component without complex positioning requirements.
Solution Approach 2:
The sealing units incorporate positioning features such as protrusions that fit into corresponding slots or grooves on the ferrite body or metal wall. This self-positioning capability allows the sealing units to automatically align themselves during assembly, eliminating the need for complex external positioning mechanisms and enabling workers to simply install the sealing units without specialized training or equipment.
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 gapless ferrite structure provides convenient assembly and positioning, enhances electrical performance, and effectively suppresses unwanted signal modes, making it suitable for high-performance communication systems while isolating metal foreign substances.
Implementation Method 1
the two limit magnets are installed on the first base and the second base respectively and configured to be corresponsive to the ferrite for generating an attraction force on the ferrite
Data Source
AI summary
A gapless ferrite structure for circulator or isolator includes a first base having a first flange and a first limit slot surrounded by the first flange, a second base having a second flange and a second limit slot surrounded by the second flange, a ferrite with two ends accommodated in the first limit slot and the second limit slot respectively, two limit magnets installed on the first base and the second base respectively and configured to be corresponsive to the ferrite to generate an attraction force on the ferrite, and two sealing units configured between an end of the ferrite and the first limit slot and between the other end of the ferrite and the second limit slot respectively. In this way, a gapless structure can be formed on a signal transmission path in a circulator or isolator.