| 摘要 |
A resonant microwave sensor (1) for determining properties of a material (3), that is to be examined, by means of the high-frequency measurement of a reflection factor (r) of a high-frequency resonance signal as measured variable for determining properties of a material to be examined, having a microwave supply conductor (4) for feeding the high-frequency signal, and a sensor waveguide (2) that is coupled to the microwave supply conductor (4), has a helical conductor (5) that is arranged inside the sensor waveguide (2).
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