Dielectric Resonator Single-Sided Installation Miniaturization
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Solution Overview
Problem
Current radio frequency filters face challenges in miniaturization and easy installation, particularly in wireless base stations, where a compact and high-performance dielectric resonator is required to meet the demands of green base station concepts and wireless communications.
Innovation Solution
A dielectric resonator design where the first and second end faces are grounded, directly contacting the inner wall of a conductive housing, allowing for single-sided installation and a compact structure, with grooves disposed to form different resonance modes and adjust the coupling coefficient by varying their extension directions, enabling miniaturization and efficient electromagnetic field management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dielectric resonator uses traditional grounding structure, then the installation requires multiple sides contact, but the assembly complexity increases and installation becomes difficult
Solution Approach 1:
The grounding structure is segmented into two independent grounding points: the first end face grounds to the first end wall of the conductive housing, and the second end face grounds to the second end wall of the conductive housing. This segmentation allows each end face to be grounded independently, simplifying the installation process and reducing assembly complexity while maintaining proper electrical grounding.
2Volume of moving object
If the dielectric resonator uses traditional structure with hollow spaces, then the structure is less compact, but the filter size increases
Solution Approach 1:
The dielectric resonator is nested within the conductive housing with the first end face directly contacting the first end wall and the second end face directly contacting the second end wall. This nesting arrangement eliminates excessive hollow spaces between the dielectric resonator and the conductive housing, achieving a compact structure that minimizes the overall filter size while maintaining proper electromagnetic performance.
3Ease of operation
If the first end face and second end face are both grounded to the conductive housing, then single-sided installation is achieved, but the grounding structure becomes more complex
Solution Approach 1:
The conductive housing serves multiple functions: it provides the structural enclosure for the dielectric resonator, acts as the grounding path for both end faces, and functions as the mounting structure for single-sided installation. By making the conductive housing multi-functional, the grounding structure complexity is avoided while achieving easy single-sided installation.
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 achieves miniaturization of filters by eliminating excessive hollow space and allowing for easy assembly, while forming resonance modes with low coupling between them, enhancing electric field density and Q value, thus supporting high-performance and compact radio frequency filters.
Implementation Method 1
different resonance modes of an electromagnetic field are formed by disposing the first groove and the second groove
Implementation Method 2
a coupling coefficient between the resonance modes can be adjusted because the extension directions of the first groove and the second groove are different
Data Source
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AI summary
This application provides a dielectric resonator, including a dielectric body disposed in a hollow conductive housing, where the dielectric body includes a first end face and a second end face that are disposed opposite to each other and a circumferential surface connected between the first end face and the second end face, the first end face is provided with a first groove, the second end face is provided with a second groove, the first end face and the second end face are in contact with an inner wall of the conductive housing, and extension directions of the first groove and the second groove are different. This application further provides a filter. This application can implement single-sided installation of the dielectric resonator, so that an objective of miniaturization is achieved and assembly becomes easy. In addition, coupling between resonance modes can be enhanced because the extension directions of the first groove and the second groove are different.