Optimal design of Vivaldi antenna with corner reflector: a Multiobjective Minimax Method

The paper presents the optimization of a reflector-backed Vivaldi antenna which was designed to operate at the 1.8, 2.1, and 3.5 GHz frequencies used in the fourth and fifth generation of wireless systems. Reducing antenna back radiation is the primary goal of the optimization; at the same time, how...

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Bibliographic Details
Published inArchives of Electrical Engineering (Online) Vol. 73; no. 4; pp. 1161 - 1181
Main Authors di Barba, Paolo, Januszkiewicz, Łukasz
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.01.2024
Subjects
Antenna design
Antennas
Arrays
Automation
Default
Design optimization
Impedance matching
Minimax technique
Multiple objective analysis
Radiation
Radio equipment
Voltage standing wave ratios
Wireless communications
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ISSN1427-4221
2300-2506
2300-2506
DOI10.24425/aee.2024.152116

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Summary:The paper presents the optimization of a reflector-backed Vivaldi antenna which was designed to operate at the 1.8, 2.1, and 3.5 GHz frequencies used in the fourth and fifth generation of wireless systems. Reducing antenna back radiation is the primary goal of the optimization; at the same time, however, antenna impedance matching has to be preserved for the considered set of frequencies, this way generating a conflict of goals. The proposed design method is based on a minimax formulation of each goal against frequency and a Pareto-like tradeoff of solutions. Both goals were achieved as a consequence of the optimization process, and the antenna now exhibits a voltage standing wave ratio below 3, front-to-back ratio of 14 dB and a gain in the front direction not smaller than 8 dBi.
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ISSN:1427-4221
2300-2506
2300-2506
DOI:10.24425/aee.2024.152116