DEVICE FOR REMOTE MEASUREMENT OF PRESSURE Russian patent published in 2013 - IPC G01L11/00 

FIELD: instrument making.

SUBSTANCE: device for remote measurement of pressure comprises a scanning device and a transponder. The scanning device comprises a driving oscillator, a power amplifier, a duplexer, a transceiving antenna, a phase doubler, a phase divider into two, the first and second narrowband filters, the first and second phase detectors, a unit of registration, a heterodyne, a mixer, an intermediate frequency amplifier, the first, second, third, fourth, fifth and sixth multipliers, a strip filter, a phase changer by 90°, a scaling multiplier, a subtractor and a summator. The transponder comprises an acoustic line, a microstrip transceiving antenna, electrodes, buses, a membrane and a reflecting grid.

EFFECT: higher device sensitivity when measuring low phase shifts corresponding to low pressure values.

2 dwg