Harmonic Oscillator Sheet Layers Stabilization
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Solution Overview
Problem
The challenge is to miniaturize microwave radio frequency devices such as filters and duplexers without compromising their filtering function, as reducing the size of the resonant cavity increases the resonant frequency, leading to inadequate performance.
Innovation Solution
A harmonic oscillator is structured with multiple sheet layers and a connection part, including a bolt and nut, to stabilize and fix the layers, using materials with low dielectric constant and loss angle tangent values, and incorporating artificial microstructures on the substrate to enhance dielectric constant and reduce resonant frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of the resonant cavity is reduced to achieve miniaturization, then the device size decreases, but the resonant frequency increases which compromises the filtering function
Solution Approach 1:
The dielectric resonator is divided into multiple sheet layers (first dielectric sheet layer, second dielectric sheet layer, etc.) that are stacked and connected together. This segmentation allows the resonator to maintain its electromagnetic resonance properties while reducing the overall device size, as each layer contributes to the resonant structure without requiring a large cavity volume
Solution Approach 2:
The patent uses composite structures combining multiple dielectric materials with different properties (first dielectric material, second dielectric material) to achieve the desired resonant frequency and filtering characteristics in a compact form. The composite structure allows optimization of electromagnetic properties without increasing device size
2Volume of moving object
If multiple dielectric sheet layers are stacked to reduce device size, then miniaturization is achieved, but the structural stability and fixing reliability deteriorate
Solution Approach 1:
Multiple dielectric sheet layers are merged into a single integrated resonant structure through connection parts (metal connection parts, resin connection parts) that bond the layers together. This merging maintains structural stability and fixing reliability while achieving miniaturization, as the connection parts ensure rigid coupling between layers without requiring a large support base
Solution Approach 2:
Connection parts (metal connection parts, resin connection parts) serve as intermediaries between the dielectric sheet layers, providing mechanical bonding and structural stability. These intermediaries enable the stacked layers to function as a unified resonator while maintaining positional stability and preventing layer separation
3Device complexity
If conventional direct attachment method is used to fix the harmonic oscillator, then the structure is simple, but the loss increases due to poor fixing stability causing swinging
Solution Approach 1:
The connection parts are integrated into the resonant cavity structure, merging the fixing function with the resonant structure itself. This integration provides stable fixation that prevents swinging and reduces electromagnetic loss, while the overall structure remains relatively simple and manufacturable
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 a stable, low-loss microwave device with reduced size and maintained performance, suitable for applications in communication devices like satellites and base stations.
Implementation Method 1
a connection part penetrated through the through holes of each harmonic oscillator sheet layer in turn and connected with a support base so as to fixedly connect the plurality of harmonic oscillator sheet layers and the support base integrally
Implementation Method 2
incorporating artificial microstructures on the substrate to enhance dielectric constant and reduce resonant frequency
Implementation Method 3
the nut and the bolt are fixedly connected together by welding or hot pressing
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a harmonic oscillator and a preparation method thereof, a filtering device and an electromagnetic wave device. The harmonic oscillator includes at least one dielectric slab and response units attached on one surface of the at least one dielectric slab, where the response units are structures manufactured by conductive material and provided with geometric patterns. According to the technical solution of the present invention, the filtering device and the electromagnetic wave device with the harmonic oscillator are good in structure stability. Swinging of a harmonic oscillator sheet layer is low in loss. The Q value of the harmonic oscillator prepared by the present invention is high; and loss of a resonant cavity, the filtering device and a microwave device with the harmonic oscillator is obviously reduced.