MUMBAI, India, Aug. 12 -- Intellectual Property India has published a patent application (202641094548 A) filed by Pokkunuri Pardha Saradhi; Dr. M. Sujatha; and Koneru Lakshmaiah Education Foundation on August 04, 2026, for Phase-Controlled Bidirectional Circularly Polarized Siw Mimo Antenna System For Sub-6 Ghz Wireless Communications.
Inventors include Kamepalli Dharani; and Dr. M. Sujatha.
The application for the patent was published on August 07, 2026, under issue no. 32/2026.
Abstract: The present invention discloses a phase-controlled bidirectional circularly polarized dual four-port Substrate Integrated Waveguide (SIW) Multiple-Input Multiple- Output (MIMO) antenna for sub-6 GHz wireless communication applications. The antenna system comprises two mirror-symmetrical four-port SIW antenna modules separated by a predetermined air gap to achieve bidirectional radiation. Each module includes four circularly polarized radiating elements excited through coaxial feeds, integrated with defected ground structures, decoupling metallic strips, and vertical SIW vias to enhance impedance matching, improve inter-port isolation, and maintain stable circular polarization. A controlled 180° phase difference is applied between corresponding ports of the two antenna modules to generate constructive radiation in opposite directions while suppressing undesired side lobes, thereby producing a balanced bidirectional radiation pattern without active switching or complex feed networks. The antenna provides high isolation, low envelope correlation coefficient, improved realized gain, and reliable circular polarization across the operating band. The proposed invention is suitable for vehicular communications, V2X systems, sub-6 GHz 5G networks, intelligent transportation systems, and other wireless communication applications requiring compact, high-performance bidirectional MIMO antennas.
Disclaimer: Curated by HT Syndication.
