MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202541036606 A) filed by Amrita Vishwa Vidyapeetham on April 16, 2025, for Auxetic Microstrip Patch Antenna Sensor For Low Strain Detection And Method Thereof.
Inventors include Menon, Sreedevi K.; Mohan Prasanna, Hariprasad; and Prabhakaran, Praveen A..
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The present invention discloses an auxetic microstrip patch antenna sensor (100) for low-strain detection and a method thereof. The sensor (100) comprises a dielectric substrate (102), a ground plane (106), a radiating patch (104), a microstrip feed line (108) with an inset feed notch (110), and a hexagonal re-entrant auxetic cluster (112) formed within the radiating patch (104). The auxetic cluster (112) comprises a plurality of re-entrant auxetic unit cells (114) having horizontal ribs (116) and slanted ribs (118) arranged at a re-entrant angle (122). Upon application of uniaxial tensile strain, the auxetic geometry undergoes lateral expansion, thereby increasing effective electrical path length and causing a measurable shift in resonant frequency for strain detection. The invention further provides lithographing the sensor (100) onto an FR4 specimen, applying tensile load, monitoring resonant frequency shift through a connector (120), and determining strain using a calibration curve relating resonant frequency shift to applied strain.
Disclaimer: Curated by HT Syndication.
