MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202531128713 A) filed by National Institute Of Technology, Rourkela, Odisha, on Dec. 18, 2025, for 'polarization reconfigurable fractal antenna for space applications.'
Inventor(s) include Behera, Dr. Santanu Kumar; and Patel, Khushbu.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "A wideband polarization-reconfigurable fractal antenna (100) for S- and C-band frequency ranges is disclosed. The antenna comprises a hexagonal microstrip radiating patch (104) integrated with a second-order Koch curve-based (302) fractal geometry along its inner boundary, a partial ground plane including a rectangular slit (114) and dual triangular extensions (118), a microstrip feed line (116), and two RF PIN diode (108) switching elements. The fractal geometry increases the effective electrical length of the radiator, thereby enhancing impedance bandwidth and maintaining compact dimensions. The rectangular slit (118) and triangular extensions (118) improve impedance matching and axial ratio bandwidth by enabling excitation of orthogonal modes. Polarization reconfiguration between linear polarization (LP), left-hand circular polarization (LHCP), and right-hand circular polarization (RHCP) is achieved through selective biasing of the PIN diodes (108), which modifies surface current distribution. The antenna (100) provides wide axial-ratio bandwidth, high radiation efficiency, and a peak realized gain of 5 dBi, making it suitable for wireless, satellite, and space communication systems."
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