Patent ID: 9464994
Filing Date: 2016-10-11
CPC Classification: G01B,G01N,G06F

Claim Text:
1. An RF sensor for a material under test, comprising: a plurality of interferometers, each interferometer comprising one or more fluidic channels each disposed across a reference branch and a test branch; the reference branch comprising a first waveguide and the test branch comprising a second waveguide; a first port associated with each of the plurality of interferometers, the first port configured to separate signals between a first transmission line and a second transmission line, the first transmission line operable to provide a reference RF signal to the first waveguide and the second transmission line operable to provide a test RF signal to the second waveguide; a second port associated with each of the plurality of interferometers, the second port configured to recombine signals from the first transmission line and the second transmission line; a signal analyzer coupled to the first port and the second port of each of the plurality of interferometers, the signal analyzer operable to measure one or more scattering parameters; wherein each of the plurality of interferometers is associated with a different frequency band range.