Classification of microwave sensors

1. Reflective sensor

This kind of reflective sensor expresses parameters such as the position and thickness of the measured object by detecting the microwave power reflected by the measured object or the elapsed time interval.

2. Interrupted sensor

The signal processing part mixes the transmitted signal and the echo signal to obtain the mixed signal spectrum, and distinguishes different frequency signals through independent fast Fourier changes, and finally obtains an accurate digital echo signal, and calculates the distance from the antenna to the surface of the medium .

Microwave level meters currently on the market mainly have two frequencies: 9-10GHz and 24.5-25.5GHz.

This kind of cut-off sensor detects the microwave power received by the receiving antenna to determine whether there are parameters such as the location and water content of the measured object between the transmitting antenna and the receiving antenna.