Analysis of Conical Antenna with Continuous Resistor Loaded

Zhu, Xiangqin; Wu, Wei; Wei, Jia; Chen, Zaigao

doi:10.23919/acess.2018.8669154

Cited by 1 publication

(2 citation statements)

References 4 publications

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“…Due to the characteristics such as stable directional radiation pattern, ultra-wideband, high gain, and low profile, the Vivaldi antenna has aroused the researchers' intense interest. Miniaturization and high gain are its main design difficulties [1]. To solve these issues, a method of side slotting has been introduced into conventional Vivaldi antenna (CVA) designs [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the director can be formed by adding higher permittivity dielectric elements [10], metal parasitic patches [1,7,9,11], and conductor gratings [12][13][14]. For example, an elliptical metal director was loaded into SSVA, increasing its fractional bandwidth by 13% and gain by 0.2 dB in [11]; several rectangular gratings were used in a SSVA, resulting in a gain improvement of nearly 1 dB in [13]; some epsilon negative metamaterial cells are arranged in two flares of a CAVA in [14], enhancing the gain of the antenna by 3 dB in the 24-30 GHz frequency range.…”

Section: Introductionmentioning

confidence: 99%

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Design of a New Balanced Side Slotted Vivaldi Antenna with Director using Genetic Algorithm

Zhang,

Hu,

Zhan

2024

ACES Journal

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Generally, side slotting and directional techniques can improve the performance of a conventional Vivaldi antenna (CVA), but the optimal structure and distribution of slots and directors may be irregular or even complex, requiring significant manual effort, thus limiting the design possibilities. In this paper, a genetic algorithm (GA) is introduced to assist in designing and optimizing a new type of balanced side slotted Vivaldi antenna with director (SSVAD). The methods of artificial intelligence make the process of searching for the optimal structure of such a multi-objective and multi-dimensional problem simpler and more diverse. The GA-generated SSVAD antenna consists of a CVA and 34 slots with varying lengths, as well as 5 metal strips. It has a compact size of 38.2×49×0.8 mm3 (or 0.32λL×0.41λL×0.007λL, where λL is the lowest operating frequency of 2.48 GHz). The measured results show that the antenna has a peak gain >0 dBi over 2.48-10.88 GHz and >5 dBi over 4.6-10.88 GHz with S11<-10 dB standard, and exhibits directional characteristics at most of the operating frequencies. Since the measured results are basically consistent with the simulation ones, the effectiveness of the designed scheme has been proven.

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