Since　its　beginning,　various　countries　have　gone　through　multiple　waves　of　surging　COVID-19　infections.　With　the　emergence　of　variants　like　Delta　and　Omicron,　the　disease　is　highly　contagious　and　has　the　ability　to　spread　at　an　alarming　rate.　In　such　scenarios,　a　quick　and　effective　detection　system　is　highly　desirable.　In　this　study,　we　present　the　concept　of　a　surface　plasmon　resonance　(SPR)　based　sensing　system　that　can　be　utilized　efficiently　and　reliably　for　the　detection　of　SARS-CoV-2　antigens.　The　SPR　system　offers　multiple　advantages　like　real-time　and　label-free　sensing　of　analytes　and　commercial　systems　have　been　in　the　market　for　more　than　two　decades.　Antireflective　coatings　(ARCs)　have　a　number　of　application　areas　because　of　their　unique　properties.　But　they　have　seldom　been　used　in　the　area　of　SPR　sensing　Hence,　with　the　help　of　simulation,　we　make　use　of　these　coatings　as　intermediate　layers　and　propose　an　enhanced　sensing　scheme　by　making　use　of　ARCs　of　TiO2　and　SiO2　and　perovskite　materials-BaTiO3,　PbTiO3,　and　SrTiO3.　We　found　that,　using　TiO2,　SiO2,　and　PbTiO3,　a　maximum　sensitivity　of　392　degRIU(-1)　can　be　obtained　which　is　5.29-fold　enhancement　as　compared　to　the　standard　SPR　arrangement　using　gold.