MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202611023346 A) filed by Dr. B R Ambedkar National Institute Of Technology, Jalandhar, Punjab, on Feb. 27, for 'a microfluidic substrate integrated waveguide microwave sensing system for real-time characterization of liquid dielectric properties.'
Inventor(s) include Kundan Kumar; Sudhanshu Kumar; and Shreya Swaraj.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present invention discloses a microfluidic substrate integrated waveguide microwave sensing system (100) for real-time characterization of liquid dielectric properties, comprising: a half-mode substrate integrated waveguide (HM-SIW) cavity (602) fabricated on a printed circuit board substrate (104); two identical semi-elliptical-shaped resonators (102) disposed within the HM-SIW cavity (602); two quarter-mode substrate integrated waveguide (QMSIW) cavities (702), each backing a corresponding semi-elliptical-shaped resonators (102); two microfluidic sample holders (106) positioned beneath each of respective semi-elliptical-shaped resonators (102) in regions of high electric field intensity; and one of two identical semi-elliptical-shaped resonators (102) configured as reference resonator (108) and another of two identical semi-elliptical-shaped resonators (102) configured as a sensing resonator (110) for a liquid under test, wherein changes in dielectric properties of liquid cause a measurable shift in resonant frequency. Further, resonant frequency shift is proportional to a change in dielectric constant of liquid sample, enabling quantitative estimation of dielectric properties."
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