2021
DOI: 10.1002/mmce.22818
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High gain antipodal Vivaldi antenna with novel V‐shaped air‐slot

Abstract: By introducing a V‐shaped air slot in antenna substrate, the peak gain can be improved significantly for traditional Vivaldi antennas without size enlargement and additional components. The air slot is conformal to the radiating conductors of the target Vivaldi antenna, and can force the electromagnetic wave to propagate within the central dielectric part between the antenna's opening slot, by decreasing the effective dielectric permittivity of the regions along the radiating conductors. As a result, the wave … Show more

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Cited by 4 publications
(2 citation statements)
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“…A tapered slot structure with a band-resonant cavity is also used to improve bandwidth and gain [ 6 ]. By slotting on the dielectric substrate [ 7 ], the electromagnetic waves propagate on the substrate between the antenna slot gaps, thereby improving the gain. The miniaturized Vivaldi antenna [ 8 ] uses bent feed lines and Gaussian curves to save space, and it replaces the traditional exponential function with a Gaussian function to increase the current path and to improve the port impedance characteristics.…”
Section: Introductionmentioning
confidence: 99%
“…A tapered slot structure with a band-resonant cavity is also used to improve bandwidth and gain [ 6 ]. By slotting on the dielectric substrate [ 7 ], the electromagnetic waves propagate on the substrate between the antenna slot gaps, thereby improving the gain. The miniaturized Vivaldi antenna [ 8 ] uses bent feed lines and Gaussian curves to save space, and it replaces the traditional exponential function with a Gaussian function to increase the current path and to improve the port impedance characteristics.…”
Section: Introductionmentioning
confidence: 99%
“…The Vivaldi antenna appears to be a good choice for microwave imaging applications because of its wide array of features such as wide bandwidth, narrow beam-width, directive radiation pattern, low cost, low profile, and small size, as discussed in [18] - [23]. Several modifications on AVAs like metamaterial slabs enhanced AVA [24], slotted AVA [25], lens loaded Vivaldi Antenna [26 -27], Artificial Intelligence based Vivaldi Antenna design optimization [28] are reported in the literature. Due to its flexibility in performance enhancement, end-fire radiation pattern and having a planar structure, an AVA is proposed in this work operating in the UWB range (3.1 -10.6 GHz).…”
Section: Introductionmentioning
confidence: 99%