MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202641076175 A) filed by Vellore Institute Of Technology on June 19, 2026, for A Quad-Band Microstrip Patch Antenna System With Dual Circular Slots And Defected Ground Structure.

Inventors include Vijay Kumar; and G Venkata Sai Gokul.

The application for the patent was published on June 26, 2026, under issue no. 26/2026.

Abstract: The present invention relates to a quad-band microstrip patch antenna system (100) comprising a dielectric substrate, a radiating patch, a ground plane, and a microstrip feedline. The radiating patch includes dual circular slot structures, a centrally positioned H-shaped slot structure, and a plurality of periodic rectangu...