An Improved Vivaldi Antenna Design for Through- Wall Radar Imaging

Menon, Rajashree R; Najeeb, Sultana; Prabhu, Swetha N; George, Treesa Angel; Kuriakose, Anila; Diwakaran, S.

doi:10.1109/icces45898.2019.9002282

Cited by 4 publications

(1 citation statement)

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“…For [10], an UWB Vivaldi antenna was proposed which demonstrated a large BW (~12.31 GHz) with the lowest frequency at 2.346 GHz, and a realized gain along the operating band of 2.25-7.75 dBi. In [11], a Vivaldi antenna was proposed for through-the-wall radar imaging (TWRI) with an operational BW between 2.5-11.3 GHz (8.8 GHz) and a constant gain above 5 dBi in the UWB frequency range. This antenna was optimized by introducing grating elements and corrugations, which improved the peak realized gain to 9 dBi and a constant gain above 6 dBi in the UWB frequency range.…”

Section: Modelsmentioning

confidence: 99%

A Wideband Vivaldi Antenna for Drone-Based Microwave Imaging System

Rodas,

Ren

ASEE-NE 2022 Proceedings

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In this paper, an Ultra-Wideband (UWB) Vivaldi antenna operating in the frequency range from 3.1 to 10.6 GHz that can be mounted on a drone with the capability of detecting hidden anomalies is proposed. An initial Vivaldi antenna model was simulated and baselined. A parametric study was performed on the initial Vivaldi antenna model by changing specific parameters to optimize operational gain and bandwidth (BW) performance in the UWB frequency range to serve as a candidate for subsurface microwave imaging of concrete-based structures. The gain of the proposed antenna was improved at the lower frequency by 5.74 dBi, at the center frequency by 4.14 dBi, and at the higher frequency by 1.30 dBi, with a moderate gain in the entire UWB, and a peak gain of the proposed antenna in the UWB frequency range of 6.6 dBi at 9 GHz. The BW was also improved by 10.57 GHz (2.87-14.54 GHz) which covers the whole UWB frequency range. The size of the proposed antenna is (29.28×42.90) 𝒎𝒎 𝟐 printed on 0.813 mm thickness Rogers RO4003C substrate with permittivity 3.55, and the Vivaldi antenna models were simulated using Altair FEKO full-wave simulation software based on the Method of Moments (MoM).

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Section: Modelsmentioning

confidence: 99%