Compact Single-Layer Multiband Micro strip Patch Antenna Using Dual-Connected T-Slot and Parasitic Elements for IoT and 5G Applications

Shahid Salauddin Modasiya; Balvant J Makwana; Komal D Anadkat; Mitul B. Patel

doi:10.5935/jetia.v12i59.3507

Autores

Shahid Salauddin Modasiya Associate professor Department of Electronics and Communication Engineering, VGEC-Chandkheda, India. https://orcid.org/0009-0009-2616-0719 (não autenticado)
Balvant J Makwana Associate professor Department of Electronics and Communication Engineering, VGEC-Chandkheda, India. https://orcid.org/0000-0001-7138-4919 (não autenticado)
Komal D Anadkat Associate professor, Department of Information and Technology Engineering, GEC-Gandhinagar, India.
Mitul B. Patel Associate professor, Department of Bio Medical Engineering, LDCE-Ahmedabad, India. https://orcid.org/0000-0002-7654-144X (não autenticado)

DOI:

https://doi.org/10.5935/jetia.v12i59.3507

Resumo

A compact, single-layer multiband microstrip patch antenna is presented that attains six discrete resonances at 2.84, 3.93, 4.34, 5.38, 7.21, and 9.56 GHz on a low-cost FR-4 substrate. The radiator integrates a dual-connected T-slot and four parasitic elements optimized in ANSYS HFSS to achieve multiple resonant modes while retaining a simple single-feed topology. Measured results corroborate full-wave simulations: the best S11 reaches –37.6 dB and the antenna show a peak gain of 5.85 dBi with stable radiation patterns across the operating bands. Parametric studies reveal how slot length and parasitic-element spacing control the lower- and higher-frequency modes and the trade-off between bandwidth and peak gain. Compared with recent single-layer multiband designs, the proposed geometry delivers a higher number of usable bands with modest fabrication complexity, making it suitable for multi-standard wireless devices (IoT, wearable WBAN, and sub-6 GHz 5G). Full fabrication details, measured S-parameters, radiation patterns, and a discussion of practical limitations are included.