Coupled Resonator Filter Structure for Wider Passband in Compact Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filter structures face challenges in achieving miniaturization while effectively widening the bandwidth of the passband, limiting integration capabilities.
Innovation Solution
A filter structure comprising a shielding component with opposing shielding layers, resonance components, and a coupling enhancement component that improves electromagnetic or capacitive coupling between resonance columns without increasing volume, thereby enhancing the passband bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If miniaturization processing is applied to reduce filter structure volume, then device integration is improved, but passband bandwidth is limited and cannot be widened effectively
Solution Approach 1:
The patent introduces a coupling enhancement component that extends in the vertical dimension between the first and second shielding layers, enabling enhanced coupling between resonance components without increasing the horizontal footprint. This vertical dimension utilization allows bandwidth expansion while maintaining miniaturized planar dimensions for device integration.
Solution Approach 2:
The coupling enhancement component acts as an intermediary element between the resonance components, providing enhanced electromagnetic coupling through its conductive structure. This intermediary component enables improved passband bandwidth by facilitating stronger interaction between resonance modes without requiring larger spacing between resonance components, thus maintaining compact volume.
2Adaptability or versatility
If coupling coefficient between resonance columns is increased to widen passband bandwidth, then device complexity increases due to additional coupling enhancement component
Solution Approach 1:
The coupling enhancement component serves multiple functions simultaneously: it enhances coupling between resonance columns to widen passband bandwidth, maintains structural support between shielding layers, and can be integrated with existing manufacturing processes. This multi-functionality justifies the added structural element by providing multiple benefits rather than a single complexity increase.
Solution Approach 2:
The patent modifies the coupling coefficient parameter by introducing the coupling enhancement component with specific conductive properties and geometric configuration. By changing the coupling parameter through this component, the passband bandwidth is adjusted without fundamentally altering the resonance component design or shielding structure, thus managing complexity through parameter optimization rather than structural redesign.
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 allows for simultaneous integration and effective widening of the passband bandwidth, enhancing the filter device's performance without increasing its size.
Implementation Method 1
the coupling enhancement component is respectively spaced apart from the first shielding layer and the second shielding layer, and is respectively connected to at least two resonance columns, so as to increase a coupling coefficient between the at least two resonance columns
Implementation Method 2
the two coupling connecting pieces are provided at an interval in a staggered manner to form a capacitive component, thereby improving a capacitive coupling coefficient between the two resonance columns
Data Source
AI summary
A filter structure and a filter device provided by the present application relate to the technical field of electronic devices. The filter structure includes: a shielding component, which includes a first shielding layer and a second shielding layer, which are arranged opposite each other at an interval; at least two resonance components, which are arranged at an interval, wherein each resonance component includes a resonance column and a resonance disk connected to the resonance column, and the resonance column is located between the first shielding layer and the second shielding layer and is connected to the first shielding layer; and a coupling enhancement component, which is respectively arranged at intervals from the first shielding layer and the second shielding layer, and is respectively connected to at least two resonance columns, so as to increase a coupling coefficient between the at least two resonance columns.