{"id":6875,"date":"2026-05-17T22:48:25","date_gmt":"2026-05-17T14:48:25","guid":{"rendered":"\/jase\/?post_type=tkuisotope&p=6875"},"modified":"2026-05-27T20:17:36","modified_gmt":"2026-05-27T12:17:36","slug":"jase-202609-32-036","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=jase-202609-32-036","title":{"rendered":"Design of self-diplexing antenna using meandered open loop resonators"},"content":{"rendered":"\n
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<\/i> 2026<\/a><\/p>\n<\/div>\n\n\n\n

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<\/i> Volume 32<\/a><\/p>\n<\/div>\n\n\n\n

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S Imaculate Rosaline1<\/sup><\/i><\/a>, Namitha K S1<\/sup>, and Alphones Arokiaswami2<\/sup><\/p>\n\n\n\n

1<\/sup>Department of ECE, Ramaiah Institute of Technology, Bengaluru<\/p>\n\n\n\n

2<\/sup>NTU, Singapore<\/p>\n<\/div>\n\n\n\n

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Received: September 2, 2025
Accepted:\u00a0April 4, 2026
Publication Date:\u00a0May 17, 2026<\/p>\n<\/div>\n<\/div>\n\n\n\n

\"\u4e0a\u50b3\u5716\u7247\"\n\n\n

Geometric layout of the proposed Antenna<\/p>\n<\/div>\n<\/div>\n\n\n\n

<\/i> Copyright <\/strong>The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n

Download Citation:  BibTeX <\/a>| http:\/\/dx.doi.org\/10.6180\/jase.202609_32.036<\/a>  <\/p>\n\n\n\n

Download PDF<\/a><\/p>\n\n\n\n

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This work introduces a compact microstrip self-diplexing antenna tailored for dual-band application at 1.5 GHz and 2 GHz employing meandered open-loop resonators (MOLRs). The design incorporates two MOLRs linked through a centrally positioned T-junction acting as a power divider, enabling effective separation of frequency channels within a reduced footprint. The antenna is fabricated on a FR-4 substrate characterized by a dielectric constant of 4.4, a loss tangent of 0.02, and a thickness of 1.6mm. The complete layout occupies a 50 x 50 mm\u00b2 area, making it well-suited for use in compact RF front-end modules where space is limited. Each resonator is dimensioned to achieve its respective resonance frequency while maintaining undesired coupling effects. According to the simulated S-parameters, the return loss remains better than-15 dB, and the isolation between
the two channels exceeds-40 dB. The fabricated prototype showed strong agreement with the simulation data upon measurement. To ensure human safety, a Specific Absorption Rate (SAR) performance analysis was also performed using a human phantom model for the associated antenna. Owing to its compact nature and effective performance metrics, the proposed diplexer is a promising candidate for L-band wireless systems, including GPS, telemetry, and Internet of Things (IoT) applications.<\/p>\n\n\n\n

Keywords: Self-diplexing Antenna; Meandered open loop Resonator; Isolation; Specific Absorption Rate; Defected ground plane.<\/em><\/p>\n\n\n\n

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