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A compact fractal dual high frequency band notched UWB antenna with a novel SC-DGS

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Abstract

A compact and novel fractal dual band notched UWB antenna with time domain characteristics is presented. A tapered microstrip fed circular fractal radiating patch along with a novel semi circular defected ground structure produce − 10 dB bandwidth from 3.73 to 16.7 GHz. The proposed antenna is a miniature size of 16 × 21 mm2 and is printed on FR-4 substrate with two high frequency notched bands from 7.29–7.76 GHz to 9.53–11.17 GHz to notch X-band satellite communications link by incorporating L and C-shaped parasitic elements respectively. The proposed antenna exhibits a uniform gain of 2–4.26 dBi, flat group delay around 1.2 ns, and peak radiation efficiency about 96% in operating frequencies makes it suitable for wireless UWB portable devices.

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Correspondence to V. N. Koteswara Rao Devana.

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Koteswara Rao Devana, V.N., Maheswara Rao, A. A compact fractal dual high frequency band notched UWB antenna with a novel SC-DGS. Analog Integr Circ Sig Process 107, 145–153 (2021). https://doi.org/10.1007/s10470-020-01774-y

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  • DOI: https://doi.org/10.1007/s10470-020-01774-y

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