Complex dielectric constant sensing system and method

A method comprising:

• deploying a sample-under-test on a first resonator coupled to a second resonator, wherein the first resonator and the second resonator provide a first output via a transmission line;
• mixing the first output with an oscillator frequency to generate a second output;
• filtering the second output to generate an analog output;
• converting the analog output to a digital output;
• and
• analyzing the digital output to determine whether a complex dielectric constant of the sample-under-test is same as a degenerate complex dielectric constant that causes mode splitting.

A system comprising:

• a transmission line comprising a rectangular-shaped microstrip;
• a first resonator coupled in a perpendicular position relative to the transmission line;
• a second resonator comprising of two symmetric and rectangular-shaped body sections with substantially equal width and length, placed substantially in a middle of the transmission line and in a mirror position relative to the first resonator;
• a region for a sample-under-test, wherein the region is coupled to the first resonator;
• a mixer coupled to the transmission line;
• a first frequency synthesizer coupled to the mixer;
• a second frequency synthesizer coupled to the transmission line;
• an IR filter coupled to an output of the mixer;
• an analog-to-digital converter coupled to an output of the IR filter;
• and
• a processing module coupled to an output of the analog-to-digital converter.