Multi-mode resonator with bent ribs for compact RF filters
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Solution Overview
Problem
Conventional RF filters require a large space, significant weight, and high manufacturing costs due to the need for multiple resonators to achieve multi-mode functionality, which is not suitable for the evolving small-cell mobile communication market that demands compact and lightweight solutions.
Innovation Solution
A multi-mode resonator design that integrates multiple resonance modes within a single cavity using a housing with resonance ribs arranged in a specific configuration, allowing for complex coupling and reduced size, weight, and manufacturing complexity, while enabling efficient frequency tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple resonators are connected to achieve multi-mode functionality, then the filter can provide multiple resonance modes, but the space occupied, weight, and manufacturing cost increase significantly
Solution Approach 1:
The patent combines multiple resonance modes into a single resonator structure by integrating multiple resonance elements within one cavity. This merging approach allows the filter to achieve multi-mode functionality without requiring separate resonators for each mode, thereby reducing the overall space occupied while maintaining the ability to provide multiple resonance modes.
Solution Approach 2:
The resonator structure is designed to perform multiple functions simultaneously by incorporating multiple resonance elements that can operate at different frequencies. This multi-functional design enables a single resonator to replace what would traditionally require multiple separate resonators, reducing both space and weight while maintaining adaptability across multiple frequency bands.
2Adaptability or versatility
If multiple resonators are connected to achieve multi-mode functionality, then the filter can provide multiple resonance modes, but the weight and manufacturing cost increase significantly
Solution Approach 1:
The patent merges multiple resonance elements into a single integrated resonator structure, eliminating the need for multiple separate resonators. This consolidation reduces the overall weight while maintaining multi-mode functionality, as the combined structure shares common support infrastructure and housing.
Solution Approach 2:
The resonator is designed as a universal structure capable of supporting multiple resonance modes within a single unit. This multi-functional design reduces weight by eliminating redundant components that would be required if separate resonators were used for each mode.
3Adaptability or versatility
If multiple resonators are connected to achieve multi-mode functionality, then the filter can provide multiple resonance modes, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The patent simplifies device complexity by merging multiple resonance elements into a single integrated structure with shared support and housing. This consolidation reduces the number of discrete components and interconnections required, thereby lowering manufacturing complexity while maintaining multi-mode functionality.
4Adaptability or versatility
If multiple resonators are connected to achieve multi-mode functionality, then the filter can provide multiple resonance modes, but the coupling adjustment complexity increases
Solution Approach 1:
The patent reduces coupling adjustment complexity by merging resonance elements into a single integrated structure where coupling paths are inherently defined by the physical arrangement. This eliminates the need for complex external coupling adjustments between multiple separate resonators, simplifying operation while maintaining multi-mode functionality.
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 a compact, lightweight, and cost-effective multi-mode resonator with improved quality factor and reduced size, facilitating easier frequency tuning and broader bandwidth, addressing the size and weight constraints of conventional filters.
Implementation Method 1
generate a resonant signal by complex coupling between multiple modes
Implementation Method 2
resonance ribs which are arranged with a predetermined interval therebetween in the cavity, have lower ends fixed to a bottom surface of the housing, and have upper ends facing each other to generate a resonant signal
Data Source
AI summary
A multi-mode resonator includes: a housing having a cavity therein; and a plurality of resonance ribs which are arranged radially around a center of the cavity with a predetermined interval therebetween. Each of the plurality of resonance ribs includes a body having a lower end and an upper end. The lower end of each of the plurality of resonance ribs is fixed to a bottom surface of the housing, and the body of the each of the plurality of resonance ribs is bent so that the upper end of each of the plurality of resonance ribs points to the center of the cavity.