Microwave resonator, microwave sensor and solution detection method
By introducing a coupled dual-antenna structure into a microwave resonator and utilizing the characteristic frequency change of the phase zero point of the coupling coefficient, the problem of insufficient sensitivity of existing microwave resonators is solved, and high-sensitivity and high-resolution solution classification with subtle differences in dielectric constant is achieved.
CN120200000BActive Publication Date: 2026-03-27SUZHOU UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-03-27
Smart Images
Figure CN120200000B_ABST
Abstract
The application belongs to the technical field of microwave liquid detection, and relates to a microwave resonator, a microwave sensor and a solution detection method.The microwave resonator comprises a dielectric substrate, a coupled double-antenna structure arranged on the dielectric substrate and comprising first and second antennas with the same polarization direction, and a metal plate arranged below the dielectric substrate and comprising a resonant cavity structure together with the dielectric substrate and the coupled double-antenna structure.The first and second antennas change in coupling coefficient when the dielectric constant of a microwave transmission medium changes, which causes the transmission characteristics of a microwave input signal to change, thereby causing the characteristic frequency of the coupling coefficient phase zero point of a microwave output signal to change.The microwave resonator provided by the scheme can capture the changes caused by subtle differences in the dielectric constant, has high sensitivity and resolution, and can thus accurately classify solutions.
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Microwave sensor for measuring liquid and measuring method thereof
CN119643973A
measuring device and method for measuring the dielectric permittivity of a dielectric medium
DE102016206362A1