Abstract
A miniaturised antipodal Vivaldi antenna (AVA) with a minimum operating frequency of 1 GHz and wide operating frequency band from 1 to 30 GHz is presented in this chapter. It includes bending technique on inner edges of radiators to lower operating frequency band to 1 GHz. Regular slits have been employed in edges of radiators to enhance gain at low frequencies. The half-elliptical shaped dielectric lens as an extension of substrate has been used to further enhance antenna gain. The proposed antenna has been applied for microwave imaging of high-loss materials such as concrete. The capability of the proposed antenna for UWB imaging has been demonstrated for the detection of voids inside concrete.
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Moosazadeh, M. (2019). Miniaturised Antipodal Vivaldi Antenna and Its Application for Detection of Void Inside Concrete Specimens. In: Antipodal Vivaldi Antennas for Microwave Imaging of Construction Materials and Structures. Springer, Cham. https://doi.org/10.1007/978-3-030-05566-0_6
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DOI: https://doi.org/10.1007/978-3-030-05566-0_6
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