Array antenna characteristics improvement: Parasitic patches (two disposals) and multi layer substrate techniques

Chater, Nadia; Tomader, Mazri; Benbrahim, Mohammed

doi:10.1109/icoa.2018.8370523

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Extensive literature surveys were performed regarding the parameters stating that certain substrates produce an improvement in bandwidth performance [2][3][4][5][6][7][8]. Another survey reported that the material contains less values of loss tangent and dielectric constants and produces better result compared to higher values [9].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Varadhan

Subramanian

Chamatu

2021

Advances in Materials Science and Engineering

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The proposed RFID reader antenna progressed with perfect electric conductor (PEC) as the radiating element and FR 4 as the substrate to achieve circular polarization, enhancement in bandwidth, and read range. The design presents a CPW feed RFID antenna for near-field reading applications, between the range of 903 MHz to 929 MHz. The operating frequency of the proposed design is 900 MHz, axial ratio of the model is less than 3 dB, impedance bandwidth is 256 MHz, and axial bandwidth is 36 MHz, proving to be adequate for near-field RFID reader applications such as item-level tagging and smart shelf. The proposed antenna model is realized with fractal structure to achieve miniaturization. The developed antenna is optimized using EM software for numerical analysis. The designed antenna is fabricated, and the prototype is characterized in terms of dielectric constant and loss tangent. The obtained results indicate high correlation with simulation results.

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Section: Introductionmentioning

confidence: 99%

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Varadhan

Subramanian

Chamatu

2021

Advances in Materials Science and Engineering

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Knowledge-based performance-driven modeling of antenna structures

Kozieł

Pietrenko‐Dabrowska

2022

Knowledge-Based Systems

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Two-stage variable-fidelity modeling of antennas with domain confinement

Pietrenko‐Dabrowska

Kozieł

Golunski

2022

Sci Rep

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Surrogate modeling has become the method of choice in solving an increasing number of antenna design tasks, especially those involving expensive full-wave electromagnetic (EM) simulations. Notwithstanding, the curse of dimensionality considerably affects conventional metamodeling methods, and their capability to efficiently handle nonlinear antenna characteristics over broad ranges of the system parameters is limited. Performance-driven (or constrained) modeling frameworks may be employed to mitigate these issues by considering a construction of surrogates from the standpoint of the antenna performance figures rather than directly geometry parameters. This permits a significant reduction of the model setup cost without restricting its design utility. This paper proposes a novel modeling framework, which capitalizes on the domain confinement concepts and also incorporates variable-fidelity EM simulations, both at the surrogate domain definition stage, and when rendering the final surrogate. The latter employs co-kriging as a method of blending simulation data of different fidelities. The presented approach has been validated using three microstrip antennas, and demonstrated to yield reliable models at remarkably low CPU costs, as compared to both conventional and performance-driven modeling procedures.

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Array antenna characteristics improvement: Parasitic patches (two disposals) and multi layer substrate techniques

Cited by 5 publications

References 6 publications

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Knowledge-based performance-driven modeling of antenna structures

Two-stage variable-fidelity modeling of antennas with domain confinement

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