Resonant Chamber Permittivity Measurement via Protruding Platform
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Solution Overview
Problem
Conventional permittivity measurement methods are complex, require calibration with a known sample, and are prone to measurement errors due to small perturbations from unexpected factors, limiting their accuracy and range.
Innovation Solution
A system and method that enhance the electric field intensity around a sample using a resonant chamber with a conductive probe, platform, pillar, detector, and computing module, allowing for amplified signal detection and calculation of permittivity without calibration, using electromagnetic field simulation software to correlate resonant frequency with permittivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional calibration method is used with known permittivity sample, then system parameters can be calculated, but measurement process becomes complex and measurement error increases for samples away from calibration point
Solution Approach 1:
The invention extracts and removes the calibration step from the measurement process. By using a simulation-based corresponding relationship between resonant frequency and permittivity, the complex calibration procedure with known samples is eliminated entirely, simplifying the measurement process while maintaining accuracy across a broader range of permittivity values
Solution Approach 2:
The invention performs preliminary simulation to establish the corresponding relationship between resonant frequency and permittivity before actual measurement. This pre-computed relationship allows direct measurement without calibration, as the system is already prepared with the frequency-permittivity mapping needed for accurate measurement across various sample types
2Measurement precision
If conventional resonant chamber is used with small perturbations, then system is simple, but unexpected perturbations significantly impact measurement accuracy
Solution Approach 1:
The invention changes the electric field intensity parameter by introducing a protruding platform that concentrates and enhances the electric field around the sample. This parameter change amplifies the perturbation effect of the sample on the resonant system, making the measurement signal stronger and less susceptible to unexpected perturbations, thereby improving measurement accuracy and expanding the measurable permittivity range
3Measurement precision
If electric field intensity is enhanced around sample, then signal is amplified and measurement accuracy improves, but system structure becomes more complex
Solution Approach 1:
The invention segments the resonant chamber structure by adding a separate protruding platform component. This segmentation allows the electric field enhancement function to be achieved through a simple geometric modification rather than a completely redesigned chamber, minimizing overall structural complexity while still amplifying the electric field around the sample for improved measurement accuracy
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 simplifies the measurement process, reduces the impact of small perturbations on accuracy, and enables permittivity measurement over a broader range with enhanced precision.
Implementation Method 1
a microwave is introduced into the resonant chamber to measure a resonant frequency when resonance is generated
Implementation Method 2
The pillar is disposed between the platform and the chamber wall so that the platform protrudes from the chamber wall to enhance an electric field intensity around the sample so as to amplify a perturbation of the resonant chamber by the sample
Data Source
AI summary
A system for measuring a permittivity includes a resonant chamber, a conductive probe, a platform, a pillar, a detector, and a computing module. The resonant chamber has a cavity. The conductive probe is configured for introducing a microwave into the cavity of the resonant chamber. The platform is configured for carrying a sample. The pillar is positioned between the platform and a chamber wall, so that the platform protrudes from the chamber wall. The detector is used to detect a resonant frequency of the microwave when resonance occurs within the cavity. The computing module is configured for calculating a permittivity corresponding to the measured resonant frequency according to a corresponding relationship between resonant frequency and permittivity. The above-mentioned system for measuring a permittivity is capable of measuring a broader range of permittivity with simplified measurement steps and higher accuracy. A method for measuring a permittivity is also disclosed.