Notch Resonator Overlapping Multiple Elements for Filter Rejection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filters in communication systems face challenges in simultaneously achieving narrow-band characteristics and excellent rejection characteristics, particularly in requiring resonators with high Q-factors.
Innovation Solution
A resonance device incorporating a notch resonator with a transverse layer overlapping at least three resonators and short-ended layers connected to a ground surface, which enhances the filter's narrow-band and rejection characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional resonator structure is used, then the filter can be manufactured with standard processes, but the filter cannot simultaneously achieve narrow-band characteristics and excellent rejection characteristics
Solution Approach 1:
The resonator is divided into multiple segments including a first resonator, second resonator, third resonator, and a notch resonator with transverse and short-ended layers. Each segment serves a specific function in achieving narrow-band characteristics and rejection characteristics, allowing the filter to meet performance requirements through modular design
Solution Approach 2:
The notch resonator is positioned within the cavity and its transverse layer overlaps with multiple resonators while short-ended layers connect to ground surfaces. This nested configuration allows the notch resonator to interact with multiple resonators simultaneously, enhancing both narrow-band and rejection characteristics without requiring separate structures
2Ease of manufacture
If the resonator structure is simplified for ease of manufacture, then manufacturing precision may be maintained, but the Q-factor and filtering performance deteriorate
Solution Approach 1:
The invention optimizes specific parameters such as the overlapping area of the transverse layer with resonators, the length and position of short-ended layers, and the spacing between resonator elements. These parameter adjustments enhance the Q-factor and filtering performance while maintaining compatibility with standard manufacturing processes
Solution Approach 2:
The resonator structure extends into the vertical dimension with multiple layers including transverse layers, short-ended layers, and ground surfaces at different heights. This three-dimensional configuration increases the effective electrical length and Q-factor without requiring larger planar dimensions, maintaining compactness while improving performance
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 proposed resonance device achieves excellent narrow-band and rejection characteristics, effectively addressing the limitations of existing filters by utilizing a notch resonator configuration that improves frequency response and filtering performance.
Implementation Method 1
a resonance device including: a plurality of resonators arranged in a state of being spaced apart from each other; and a notch resonator formed above the plurality of resonators
Data Source
AI summary
A resonance device including a plurality of resonators arranged in a state of being spaced apart from each other; and a notch resonator formed above the plurality of resonators, wherein the notch resonator includes: a transverse layer having an area overlapping with at least three resonators of the plurality of resonators; and a plurality of short-ended layers connecting the transverse layer to a first ground surface.