Split-Ring Antenna Capacitance Stabilization via Complementary Adjusting Portions
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Solution Overview
Problem
Existing antennas with split-ring resonator structures face variations in capacitance and characteristics due to relative movement between facing portions, leading to inconsistent performance, especially during manufacturing and external forces.
Innovation Solution
The antenna incorporates complementary adjusting portions on both facing portions to counteract capacitance variations caused by movements in horizontal directions, ensuring stability and consistent performance by utilizing specific geometric configurations and arrangements of primary and secondary lines to form capacitive and inductive elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitor is formed by two flat plate surfaces separated by an interdigital slot in a split-ring resonator antenna, then the antenna can achieve resonant operation, but the characteristics of the antenna vary when the flat plate surfaces experience relative movement due to external forces
Solution Approach 1:
The patent applies preliminary anti-action by designing the capacitor with four variable portions arranged symmetrically that preemptively counteract capacitance variations. When relative movement occurs between the flat plate surfaces, the complementary adjusting portions generate opposing effects that cancel out the harmful capacitance changes, thereby maintaining stable antenna characteristics despite structural displacement
Solution Approach 2:
The patent utilizes parameter changes by designing the capacitor with variable portions whose geometric parameters (width, length, spacing) are specifically configured to produce complementary capacitance adjustments. The adjusting portions are designed with dimensions that enable them to counteract capacitance variations through controlled changes in their own geometric parameters in response to relative movement
2Adaptability or versatility
If the facing portions are allowed to move relatively in the horizontal plane, then the antenna can accommodate external forces and manufacturing variations, but the capacitance of the capacitor varies leading to inconsistent antenna performance
Solution Approach 1:
The patent applies parameter changes by designing the capacitor with variable portions whose geometric parameters are specifically configured to produce complementary capacitance adjustments. The adjusting portions are designed with dimensions that enable them to counteract capacitance variations through controlled changes in their own geometric parameters in response to relative movement
Solution Approach 2:
The patent converts the harmful effect of relative movement into a beneficial outcome by designing the complementary adjusting portions to automatically generate compensating capacitance changes. The relative movement that would normally degrade performance is transformed into a mechanism that activates the adjusting portions, which then produce opposing capacitance variations that cancel out the harmful effects and maintain stable antenna characteristics
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 design effectively suppresses capacitance variations and maintains consistent antenna characteristics, even under relative movement, enhancing reliability and performance across different manufacturing processes and environmental conditions.
Implementation Method 1
an upper facing portion having a first facing portion and a second facing portion that form a capacitor in a first horizontal plane
Implementation Method 2
an antenna having a split-ring resonator structure
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A facing portion of an antenna is provided with a first capacitance complementary adjusting portion which adjusts variation of a capacitance caused by a first movement of a second facing portion relative to a first facing portion and a second capacitance complementary adjusting portion which adjust variation of the capacitance caused by a second movement of the second facing portion relative to the first facing portion. The first capacitance complementary adjusting portion has a first variable portion and a second variable portion which have mutually opposite effects on the capacitance. The second capacitance complementary adjusting portion has a third variable portion and a fourth variable portion which have mutually opposite effects on the capacitance.