Affiliations: [a] Department of Electronics and Communication Engineering, National Institute of Technology, Agartala, India | [b] Department of Electronics and Communication Engineering, Gandhi Institute for Technological Advancement, Bhubaneswar, India
Correspondence:
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Corresponding author: Rajib Kumar Dash, Department of Electronics and Communication Engineering, National Institute of Technology, Agartala, 799046, India. E-mail: rajibece.sch@nita.ac.in, rkdashece@gmail.com
Abstract: In this article two fractal geometry-based slotted patch antennas are designed to achieve wideband response with multiband characteristics and reduced cross polarized radiation in both E- and H-plane for all the resonating bands. The proposed antennas are fed with microstrip line feeding formed on a FR4 substrate of size 0.25𝜆0 × 0.25𝜆0 × 0.02𝜆0 mm3 and loaded with a partial ground plane at the bottom of the substrate. HFSS is used to design and simulate both the antennas. Wideband behavior and impedance matching of Antenna-1 are improved by optimizing the factor of iteration and length of the ground plane. Due to addition of 3 identical split ring resonators (SRR) with the antenna geometry leads to achieve multiband response in Antenna-2. The dimensions of the SRR connectors and feedline have been optimized through parametric analysis to match the impedance properly at all the three resonating bands. It has been found that simulated and measurement results of both the antennas are properly matched.
Keywords: Line feeding, multiband, partial ground plane, triangular slots, wideband
