{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T20:03:45Z","timestamp":1790712225231,"version":"4.1.0"},"reference-count":26,"publisher":"Optica Publishing Group","issue":"28","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Appl. Opt."],"published-print":{"date-parts":[[2026,10,1]]},"abstract":"<jats:p>The design of a dual-port antenna with decreased RCS and circular\n\t\t\t\t\tpolarization is presented in this study. A cylindrical silicon\n\t\t\t\t\tdielectric resonator is excited via an asymmetrical plus-shaped\n\t\t\t\t\taperture-coupling device to produce circularly polarized radiation\n\t\t\t\t\t(3.45\u20133.85\u00a0THz). An EBG metasurface integrated on the underside\n\t\t\t\t\tof the substrate provides two significant advantages. First, it\n\t\t\t\t\teffectively reduces the monostatic radar cross-section (RCS),\n\t\t\t\t\tachieving values below \u221225dBsm. Second, it substantially improves\n\t\t\t\t\tthe isolation between antenna ports, resulting in an isolation level\n\t\t\t\t\tthat exceeds 25\u00a0dB. The suggested antenna works well in the\n\t\t\t\t\t3.25\u20134.0\u00a0THz frequency band, according to CST\/HFSS EM\n\t\t\t\t\tsimulation. Throughout the operational band, the antenna exhibits\n\t\t\t\t\tsteady radiation performance with a broadside peak realized gain of\n\t\t\t\t\taround 7.0\u00a0dBi. The suggested radiator is a feasible choice for\n\t\t\t\t\tTHz radar and wireless transmission due to its directed broadside\n\t\t\t\t\tradiation characteristics and superior diversity performance.<\/jats:p>","DOI":"10.1364\/ao.609309","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T15:28:27Z","timestamp":1788967707000},"page":"9940","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Concurrent electromagnetic signature reduction\u00a0and isolation improvement in a metasurface-integrated graphene-dielectric resonator MIMO tunable antenna for THz communication systems"],"prefix":"10.1364","volume":"65","author":[{"given":"Dinesh Kumar","family":"Prabhakar","sequence":"first","affiliation":[{"name":"National Institute of Advanced Manufacturing Technology Ranchi"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lov","family":"Kumar","sequence":"additional","affiliation":[{"name":"Government Engineering College"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sunita","family":"Sinha","sequence":"additional","affiliation":[{"name":"Government Engineering College"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"family":"Sundaram","sequence":"additional","affiliation":[{"name":"Government Engineering College"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"key":"ao-65-28-9940-R1","doi-asserted-by":"publisher","first-page":"2156","DOI":"10.1109\/LAWP.2021.3072562","type":"journal-article","volume":"20","author":"Abohmra","year":"2021","journal-title":"IEEE Antennas\n\t\t\t\t\tWirel. 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All rights, including\n\t\t\t\t\tfor text and data mining (TDM), Artificial Intelligence (AI) training,\n\t\t\t\t\tand similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}