一种液体浓度自维持测量微波有源传感器
By combining a passive resonant cavity and a microwave negative resistance circuit, and utilizing a back-to-back re-entry resonant structure and an IQ quadrature demodulation module, the problem of low sensitivity of microwave resonant sensors in liquid concentration measurement was solved, achieving high-resolution and low-cost liquid concentration measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST UNIV
- Filing Date
- 2024-03-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing microwave resonant sensors have low sensitivity in liquid concentration measurement, making it difficult to achieve high resolution and ultra-low concentration detection, and are also costly.
Design a microwave active sensor for self-sustaining liquid concentration measurement. Employ a passive resonant cavity and microwave negative resistance circuit, combined with a back-to-back re-entry resonant structure and microwave negative resistance oscillation technology. Utilize an IQ quadrature demodulation module for signal processing to reduce reliance on expensive instruments.
It improves the sensitivity and resolution of liquid concentration measurement, reduces detection costs, and enables high-resolution, low-lower-limit liquid concentration measurement.
Smart Images
Figure CN118329934B_ABST