volume | PIER Journals

Abstract

In this paper we report a cascaded circular ring antenna with semicircular C-shaped radiating slots for multiband applications. The novelty of this paper lies with three techniques as follows: cascading circular rings, semicircular C-shaped slots and complimentary split ring resonators embedded on the ground are included in the paper. The dimensions with optimised values are 35 × 35 × 1.61 mm³. The antenna operates from 2.124 GHz to 8.284 GHz, and it is deposited on a 1.6 mm thick FR-4 substrate. The radiating patch is built on the substrate; it is made by developing multiple circular ring structures to develop a cascaded ring-like pattern that provides the wideband response. The antenna successfully resonated with a wide bandwidth of 6.16 GHz in the span of 2.124 GHz to 8.284 GHz. The ground features a half hexagonal slot that is embedded within the larger etched rectangular slot. An equivalent circuit with R-L-C elements is developed. The resonating bands are obtained at 3.0 GHz, 5.89 GHz, and 7.07 GHz with reflection coefficients of -21.3 dB, -19.7 dB, and -26.7 dB, respectively. The optimised design operates at UWB, WLAN, WiMAX, and 5G midband applications.

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Dr. Chevala Rambabu

Dr. Kaza Srilakshmi

Dr. Vasudha Vijayasri Bolisetty

Dr. Udara Yedukondalu

Dr. Kottapadikal Vinodan Vineetha