Metal Injection Resonator Filter for Precision and Miniaturization
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Solution Overview
Problem
Current filter manufacturing methods, such as machining and die-casting, are inefficient and costly, failing to meet the increasing demands for dimension and performance in metal filters due to low material utilization, high production costs, and reduced radiofrequency performance.
Innovation Solution
The metal injection molding process is used to create resonators with higher precision, allowing for the integration of resonators within a resonator chamber body, enabling miniaturization, lightweight, high-performance filters with improved dimensional tolerances and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If die-casting method is used to manufacture resonators, then production efficiency is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent changes the manufacturing method from die-casting to metal injection molding, which fundamentally alters the process parameters and capabilities. MIM allows for tighter dimensional tolerances (±0.05mm to ±0.10mm) compared to die-casting, while maintaining high production efficiency through automated molding processes.
Solution Approach 2:
The patent replaces the traditional die-casting mechanical system with metal injection molding technology. This substitution enables precise control over resin injection pressure, temperature, and curing parameters, resulting in superior dimensional accuracy while preserving mass production capabilities.
2Manufacturing precision
If machining method is used to manufacture resonators, then manufacturing precision is improved, but productivity deteriorates
Solution Approach 1:
The patent replaces traditional mechanical machining with metal injection molding. The MIM process uses controlled resin injection and automated curing to achieve precise dimensions without the time-consuming sequential operations of machining, thereby improving both precision and productivity simultaneously.
Solution Approach 2:
The patent transforms the manufacturing approach by changing from subtractive machining to additive molding. By controlling injection pressure, temperature, and mold design parameters, the process achieves machining-level precision while producing parts directly in final shape, eliminating post-processing and大幅提升 productivity.
3Loss of substance
If die-casting method is used, then material utilization is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent changes the manufacturing process from die-casting to metal injection molding, which allows for near-net-shape production. The MIM process can achieve dimensional tolerances of ±0.05mm to ±0.10mm directly from molding, minimizing the need for post-processing and material removal, thus maintaining high material utilization while achieving superior precision.
4Ease of manufacture
If resonators are manufactured separately and assembled, then ease of manufacture is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent merges the resonator and housing into a single integrated component manufactured through one metal injection molding process. This eliminates separate assembly operations and ensures precise coupling between resonator and housing, as they are formed as one piece with inherent positional accuracy determined by the mold design.
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 approach results in filters with enhanced precision, miniaturization, and high integration capabilities, achieving better radiofrequency performance and reduced production costs compared to traditional methods.
Implementation Method 1
at least one resonator of the plurality of resonators is molded by a metal injection molding process
Implementation Method 2
after removing the binder of the mixture, sintering the mixture to form a filter element
Data Source
AI summary
A metal injection filter includes a resonator chamber body and a plurality of resonators. The resonator chamber body is an enclosure that forms a resonance chamber. The plurality of resonators are mounted in the resonance chamber. At least one resonator of the plurality of resonators is molded by a metal injection molding process.