MUMBAI, India, Aug. 8 -- Intellectual Property India has published a patent application (202411004294 A) filed by Birla Institute Of Technology And Science, Pilani, Rajasthan, on Jan. 22, 2024, for 'system and method for generating non-vortex mode 1/-1 circularly polarized orbital angular momentum beams.'
Inventor(s) include Kadlimatti, Ravi; and Firdous, Farhana.
The application for the patent was published on Aug. 8, under issue no. 32/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a system and method for generating non-vortex mode 1/-1 orbital angular momentum (OAM) beams which are circularly polarized (CP) and can enable reliable high data rate wireless communications, long-range communications etc. The invention uses sequential rotation in clockwise or anti-clockwise of a uniform circular array's linearly polarized (LP) antenna elements by an amount equal to their excitation phases in anti-clockwise or clockwise direction for generating corresponding CP non-vortex OAM beams with the helical phase front and a radiation pattern with a mainlobe peak at the center in the direction of propagation. The OAM mode number (i.e., l = 1/-1) and direction of circular polarization (i.e., left-handed/anti-clockwise or right-handed/clockwise) is decided by the directions of rotation of antenna elements and the excitation phases."
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