Design and analysis of AMC reflector integrated flexible and compact vehicular antenna for communication application

Anil Babu Badisa; Boddapati Taraka Phani Madhav; Kantamneni Srilatha; Amrutha Varshini Chillarige; Vineel Battula; Chandini Vara Lakshmi Garimella

doi:10.3103/S0735272722090059

Authors

Anil Babu Badisa GMR Institute of Technology, Rajam, India https://orcid.org/0000-0002-7248-3406
Boddapati Taraka Phani Madhav Koneru Lakshmaiah Education Foundation, India https://orcid.org/0000-0002-6893-6978
Kantamneni Srilatha Koneru Lakshmaiah Education Foundation, India https://orcid.org/0000-0003-1490-4759
Amrutha Varshini Chillarige Koneru Lakshmaiah Education Foundation, India http://orcid.org/0009-0003-9732-2208
Vineel Battula Koneru Lakshmaiah Education Foundation, India http://orcid.org/0009-0005-2519-5742
Chandini Vara Lakshmi Garimella Koneru Lakshmaiah Education Foundation, India http://orcid.org/0009-0009-8986-3868

DOI:

https://doi.org/10.3103/S0735272722090059

Keywords:

SRR, AMC reflector

Abstract

In this paper, a flexible, compact, and semi-transparent monopole antenna integrated with a 2×2 AMC reflector is presented for vehicular communication applications. F-shaped and inverted L-shaped stubs are connected to the radiator symmetrically with slots in the partial ground for making the antenna operate at a 5.85 GHz band. The antenna is designed using a flexible polyimide substrate (ε_r = 3.5, tanδ = 0.025) with dimensions of 14×14×0.5 mm³. An AMC reflector unit cell is designed using PDMS (Polydimethylsiloxane) substrate (ε_r = 2.66, tanδ = 0.023) with dimensions of 8×8×1 mm³. The AMC cell structure is designed with a split ring resonator (SRR) and rectangular ring with full ground resonating at 5.85 GHz. The 2×2 AMC reflector surface is integrated with a separation 9 mm to the designed antenna that provides the gain increment from 1.73 dBi to 4.56 dBi. The reflection coefficient S₁₁ bandwidth of the AMC-backed antenna is 0.52 GHz, while the standalone antenna’s bandwidth is 0.44 GHz. The flexibility, compactness, and achieved radiation metrics project the proposed antenna structure a suitable choice for vehicular communication applications.

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