Title: Comparative investigation on multi-band antenna using FR-4 and RT-Duroid

Authors: K.V. Prashanth; Pradeep M. Hadalgi; Prabhakar V. Hunagund

Addresses: Department of PG Studies and Research in Applied Electronics, Gulbarga University, Kalaburagi, 585-106, Karnataka, India; Department of ECE, Koneru Lakshmaiah Education Foundation, Hyderabad, 500075, Telangana, India ' Department of PG Studies and Research in Applied Electronics, Gulbarga University, Kalaburagi, 585-106, Karnataka, India ' Department of PG Studies and Research in Applied Electronics, Gulbarga University, Kalaburagi, 585-106, Karnataka, India

Abstract: The comparative design and investigation of the multiple resonances are analysed on two substrates using flame retardant FR-4 glass epoxy with the dielectric value of 4.4 and RT-Duroid with the dielectric value of 2.2. To attain the multiple bands for multiple applications with a single antenna is the main aim concluded in this paper. The defected ground structure (DGS) is designed on the ground plane with the combination of slots getting into shaped as E-shape and stacked U-shape. The proposed model has responded to multiple resonances on two substrates. Once the DGS has been inserted, the various parameters are improved such as multiple bands, return loss, gain and bandwidth. The dimensions for FR-4 substrate and RT-Duroid are 30 × 20 × 1.6 mm³ and 30 × 20 × 1.2 mm³, respectively. The main goal of the proposed antenna is to use it for multiple applications. This can be achieved by tuning the defective ground structure. In this proposed antenna, the 50 ohm line feed technique has been utilised for both designs.

Keywords: defected ground structure; DGS; photonic band gap; PBG; multi-band; 3D gain; flame retardant FR-4; Rogers-5880; ultra-wide band; UWB; super wide band; SWB.

DOI: 10.1504/IJUWBCS.2022.121823

International Journal of Ultra Wideband Communications and Systems, 2022 Vol.5 No.1, pp.40 - 46

Received: 20 Aug 2020
Accepted: 03 Jan 2021
Published online: 07 Apr 2022 *

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