A compact triband antipodal Vivaldi antenna with frequency selective surface inspired director for IoT/WLAN applications

Güneş, Filiz; Evranos, Ilhan Omer; Belen, Mehmet A.; Mahoutı, Peyman; Palandöken, Merih

doi:10.1007/s11276-021-02656-5

Cited by 12 publications

(11 citation statements)

References 60 publications

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“…Herein, as a suitable optimization algorithm for this task, Honey Bee Mating Optimization (HBMO) is taken as a powerful population-based hybrid meta-heuristic algorithm. [43][44][45][46][47] HBMO is an algorithm inspired based on behavior of honey bees mating, which can simultaneously conduct a global and local search in its process. 44 For this work, the cost function defined in Equation ( 1) is used to achieve three different design optimization case studies.…”

Section: Antenna Design and Generation Of Data Setsmentioning

confidence: 99%

“…Thus the overall computational cost of the design is reduced by almost 80%. Herein, as a suitable optimization algorithm for this task, Honey Bee Mating Optimization (HBMO) is taken as a powerful population‐based hybrid meta‐heuristic algorithm 43–47 . HBMO is an algorithm inspired based on behavior of honey bees mating, which can simultaneously conduct a global and local search in its process 44 .…”

Section: Antenna Design and Generation Of Data Setsmentioning

confidence: 99%

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Data driven surrogate modeling of horn antennas for optimal determination of radiation pattern and size using deep learning

Piltan

Kīzīlay

Belen

et al. 2023

Micro & Optical Tech Letters

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Horn antenna designs are favored in many applications where ultra‐wide‐band operation range alongside of a high‐performance radiation pattern characteristics are requested. Scattering‐parameter characteristics of antennas is an important design metric, where inefficiency in the input would drastically lower the realized gain. However, satisfying the requirement for scattering parameters are not enough for having an antenna with high‐performance results, where the radiation characteristic of the design can be changed independently than the scattering parameters behavior. A design might have a high‐efficiency performance, but the radiation characteristics might not be acceptable. Furthermore, there are other design considerations such as size and volume of the design alongside of these conflicting characteristics, which directly affect the manufacturing cost and limits the possible applications. In this work, by using data‐driven surrogate modeling, it is aimed to achieve a computationally efficient design optimization process for horn antennas with high radiation performance alongside of being small in or within the limits of the desired application limits. Here, the geometrical design variables, operation frequency, and radiation direction of the design will be taken as the input, while the realized gain of the design is taken as the output of the surrogate model. Series of powerful and commonly used artificial intelligence algorithms, including Deep Learning had been used to create a data‐driven surrogate model representation for the handled problem, and 80% computational cost reduction had been obtained via proposed approach. As for the verification of the studied optimization problem, an optimally designed antenna is prototyped via the use of three‐dimensional printer and the experimental results ware compared with the results of surrogate model.

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Section: Antenna Design and Generation Of Data Setsmentioning

confidence: 99%

Section: Antenna Design and Generation Of Data Setsmentioning

confidence: 99%

Data driven surrogate modeling of horn antennas for optimal determination of radiation pattern and size using deep learning

Piltan

Kīzīlay

Belen

et al. 2023

Micro & Optical Tech Letters

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“…9 A director, placed between the radiating flares of the AVA is observed to enhance the directivity of AVA. 10 Nevertheless, AVA suffers from severe crosspolarization. To arrest the cross polarization 11 of AVA, a balanced antipodal Vivaldi antenna (BAVA) is introduced.…”

Section: Introductionmentioning

confidence: 99%

“…Slot‐line fed Vivaldi's impedance matching is improved by a microstrip fed antipodal Vivaldi antenna (AVA) 9 . A director, placed between the radiating flares of the AVA is observed to enhance the directivity of AVA 10 …”

Section: Introductionmentioning

confidence: 99%

Beam‐squint rectified balanced antipodal Vivaldi antenna with sliced fins and quarter‐wavelength labyrinth director

Jency

Pandeeswari

et al. 2023

Micro & Optical Tech Letters

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This paper introduces a gain‐enhanced, beam‐squint rectified balanced antipodal Vivaldi antenna (BAVA) with symmetrically sliced fins and a novel square‐shaped metallic labyrinth director. The proposed antenna operates from 2 to 18 GHz with S11 less than −10 dB maintaining a fractional bandwidth of 160%, realizes 12.564 dBi as maximum gain at 18 GHz, and achieves greater than 3.415 dBi gain throughout the functioning band of frequency. Improvement of broadside gain by reconfiguration of current loops through symmetric slicing of radiating flares and beam‐squint correction using quarter‐wavelength labyrinth director are addressed by the proposed antenna. The maximum realized size of the antenna is 80 × 40 × 0.508 mm3. Consistent radiation patterns are observed at selected frequencies. Numerical evaluation with a full wave simulation tool and consequent experimental validation with a compact antenna test range is performed.

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“…A previous study [18] studied frequency reconfigurable antennas that construct switching circuits with pin diodes at ringshaped slots between the Vivaldi antenna arms. Recently, AVA using meander line-shaped slots and frequency selective surface (FSS) to enhance the gain and the impedance bandwidth was researched for IoT/WLAN applications [19].…”

Section: Introductionmentioning

confidence: 99%

Wideband Printed Antipodal Vivaldi Antenna using Straight Slots for UHF DVB-T/T2 Applications

2022

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This paper presents a wideband printed antipodal Vivaldi antenna using straight slots for UHF DVB-T/T2 applications covering a frequency range of 470–862 MHz. The proposed antenna consists of two radiation flares with straight slots and a feeding line. A wideband impedance matching was achieved by inserting the slots between the flares and the feeding line. For the experimental verification of the proposed antenna, it was fabricated on a flat circular printed circuit board (PCB) substrate with a radius of 0.25 λ0, where λ0 is the wavelength at 0.74 GHz (the center frequency of the operating band). The measured −10 dB impedance bandwidth and maximum gain were approximately 72.1% (0.47–1.00 GHz) and 2.57 dBi, respectively. Due to the addition of the slots, the impedance bandwidth of the proposed antenna was improved by approximately 212% compared with the Vivaldi antenna without slots.

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A compact triband antipodal Vivaldi antenna with frequency selective surface inspired director for IoT/WLAN applications

Cited by 12 publications

References 60 publications

Data driven surrogate modeling of horn antennas for optimal determination of radiation pattern and size using deep learning

Data driven surrogate modeling of horn antennas for optimal determination of radiation pattern and size using deep learning

Beam‐squint rectified balanced antipodal Vivaldi antenna with sliced fins and quarter‐wavelength labyrinth director

Wideband Printed Antipodal Vivaldi Antenna using Straight Slots for UHF DVB-T/T2 Applications

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