FIELD: physics.
SUBSTANCE: device consists of a scanning device and a transponder. The scanning device consists of a driving generator, power amplifier, diplexer, transceiving antenna, phase meter, narrow-band filter, recording unit, delay line, phase inverter, three adders, two amplitude detectors and a multiplier. The transponder is made in form of a multitapped delay line on surface acoustic waves, incorporating an interdigital converter. The interdigital converter is made in form of two interdigitated-finger electrodes, deposited on the surface of an acoustic line. The electrodes are joined by bus bars, which are joined to the microstrip transceiving antenna. There is thin membrane and a reflecting grating on the acoustic line.
EFFECT: increased authenticity of measurements.
4 dwg
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