Contactless microwave meter of reflecting surface distance

摘要

Contactless microwave meter distance reflective surface includes a tunable microwave generator (1), the microwave output connected to the input (31) of the directional four-port network (3). Through the outlet (32) of the directional four-port network (3) is connected to the input of the attenuator (4) whose output is connected to one-port (5) with a great reflection. Coupling output (33) of the directional four-port network (3) is connected to the input, which is currently output, the sensor (6), the distance and isolation output (34) of the directional four-port network (3) is connected with the control and evaluation unit (13) with an indicator of microwave power or voltage or current. Control output of the evaluation unit (13) is connected to the input of the tunable microwave generator (1). In the alternative circuit is through output (32) of the directional four-port network (3) connected to an input which is simultaneously output sensor (6) distance. Coupling output (33) of the directional four-port network (3) is connected to the input of the attenuator (4) whose output is connected to one-port (5) with a great reflection.