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Review
. 2024 Oct 10;24(20):6536.
doi: 10.3390/s24206536.

Overview of Vivaldi Antenna Selection for Through-Wall Radar Applications

Mariana Amador  1 , André Rouco  1 , Daniel Albuquerque  2 , Pedro Pinho  1
Affiliations
Review

Overview of Vivaldi Antenna Selection for Through-Wall Radar Applications

Mariana Amador et al. Sensors (Basel). .

Abstract

This paper analyzes broadband antennas, with a special focus on Vivaldi antennas, for their suitability for through-wall radar applications. It assesses various antenna designs, emphasizing high gain, wide impedance bandwidth, and effective wall penetration capabilities. Vivaldi antennas are superior due to their broad bandwidth, high gain, and directional radiation patterns. This study further explores structural optimizations, feeding techniques, and performance enhancement strategies to refine Vivaldi antenna designs for through-wall radar systems. Through a comparative analysis and technical evaluation, this paper highlights Vivaldi antennas' potential for improving through-wall radar systems' imaging and sensing capabilities. This presents a pathway for future ultra-wideband advancements.

Keywords: Vivaldi antennas; antenna design and optimization; electromagnetic wave propagation; through-wall radar; ultra-wideband antennas.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Structure of an Antipodal Vivaldi antenna.
Figure 2
Figure 2
Structure of a Vivaldi antenna.
Figure 3
Figure 3
Geometry of a simple microstrip-to-slotline transition.
Figure 4
Figure 4
Structure of a radial stub.
See this image and copyright information in PMC

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