UWB cotton leaf design microstrip-fed printed monopole antenna

Moura, Leidiane Carolina M. de; Cruz, Josiel do Nascimento; Costa, Andrécia Pereira da; Silva, Paulo H. da F.; Silva, Jefferson C. e

doi:10.1109/imoc.2015.7369155

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…Figure 13 shows the wearable textile antennas: patch generated by L-systems (Figure 13(a)) and printed monopole generated by polar transformer, Figure 13(b). Printed monopole antennas (PMA) with polar shape can be observed in several works, operating mainly in the ultrawideband (UWB), but with projects for 2G, 3G, and 4G technology and X band [35][36][37][38][39]. The altering frequency provided by polar shapes was observed in [38,40], similar to the observed pre-fractal geometry applied to the PMA [41].…”

Section: Wearable Teragon Antennasmentioning

confidence: 76%

Fractal and Polar Microstrip Antennas and Arrays for Wireless Communications

Silva¹,

Filho²,

Santana³

et al. 2020

Wireless Mesh Networks - Security, Architectures and Protocols

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This chapter presents the research done by authors in recent years on microstrip antennas and their applications in wireless sensors network. The subject is delimited to the study of conventional microstrip antennas, from which antennas with fractal and polar shapes are proposed. A detailed description of the antenna design methodology is presented for some prototypes of microstrip antennas manufactured with different dielectric substrates. Analysis of the proposed antennas has been done through computational simulation of full-wave methods. Experimental characterization of antennas and dielectric materials has been performed with the use of a vector network analyzer. The results obtained for the resonant and radiation parameters of the antennas are presented. Computer-aided design (CAD) of microstrip antennas and arrays using fractal and polar geometrical transformations results in a wide class of antenna elements with desirable and unique characteristics, such as compact, exclusive, and esthetic antenna design for multiband or broadband frequency operation with stable radiation pattern.

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Section: Wearable Teragon Antennasmentioning

confidence: 76%

Fractal and Polar Microstrip Antennas and Arrays for Wireless Communications

Silva¹,

Filho²,

Santana³

et al. 2020

Wireless Mesh Networks - Security, Architectures and Protocols

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“…In [61], a fractal bioinspired cotton leaf antenna designed for the UWB band (3 GHz to 13 GHz) has been presented. The antenna features a simple geometry, as shown in Fig.…”

Section: Figure 10 Modified Sierpinski Fractal Gasket Physical Modelmentioning

confidence: 99%

Review of Recent Advancement on Nature/Bio-Inspired Antenna Designs

Azam,

Shah,

Bashir

et al. 2024

IEEE Access

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This article presents an extensive examination of antennas rooted in nature and biology, showcasing their remarkable performance across a wide spectrum of frequencies-from microwave to terahertz. The limitations of traditional antenna design have become increasingly evident in the face of burgeoning demands for novel communication technologies. Conventional analytical-equation-based approaches struggle to deliver the combined performance characteristicsencompassing bandwidth, gain, radiation pattern, and miniaturizationthat emerging technologies necessitate. This has fueled an interest in bioinspired antenna designs, a paradigm shift drawing inspiration from the ingenious structural solutions found in the living and nonliving world, from plant leaves to bird feathers. These bio-inspired designs offer distinct advantages such as broader bandwidth and reduced sizes, making them highly appealing alternatives to the limitations of conventional antenna designs. This review explores a diverse range of bio-inspired designs. Among them are fractal geometries, inspired by self-repeating patterns in nature, which achieve optimal performance. Numerous designs in this category draw inspiration from nature, incorporating patterns observed in snowflakes, tree branches, clouds, and butterflies. Furthermore, nano-antennas have attracted significant attention for their vast potential applications in microwave and optical frequencies, playing a pivotal role in high-resolution spectroscopy, biomedical diagnosis and sensing, quantum photonics, and solar cell applications. By examining design methodologies and potential benefits, this article highlights the transformative potential of nature-inspired antennas. The compelling advantages of bio-inspired approaches necessitate a thorough exploration of their potential, paving the way for the development of next-generation communication systems with unprecedented capabilities.INDEX TERMS Bio-inspired antennas, Nano antennas, Wearable antennas, Fractal antennas.

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“…In recent years, telecommunication systems requirements have imposed a continuous challenge to microwave engineers. Following natural evolution trained along billions of years, nature inspired geometries can provide interesting solutions, such as those reported for wireless system applications [31], [32]. In this work, the shape of the sunflower, scientifically called helianthus annus [33], is used as the FSS patch element shape in the parametric analysis.…”

Section: Fss With Sunflower-shaped Patch Elementsmentioning

confidence: 99%

Synthesis of Multiband Frequency Selective Surfaces Using Machine Learning With the Decision Tree Algorithm

et al. 2021

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This paper presents the synthesis of multiband frequency selective surfaces (FSSs) using supervised machine learning (ML) with the decision tree (DT) algorithm. The proposed FSS structure is composed of an array of metallic patches printed on a dielectric substrate for stopband spatial filtering microwave applications. The shapes of the metallic patches are based on the sunflower (helianthus annus) geometry. In the first step, a parametric analysis is performed to investigate the use of different FSS geometries, including those with circular, annular and corolla integrated patch elements, to compose the sunflower geometry, regarding multiband and polarization independent performances with size reduction. Two bioinspired FSS geometries are synthesized using supervised machine learning with the decision tree algorithm. The random forest (RF) algorithm is used to validate the decision tree algorithm and to confirm the obtained results. The numerical analysis of the proposed FSS geometries is performed using Ansoft Designer software. Prototypes are fabricated and measured. The good agreement observed between simulated and measured results has validated the proposed approach. The use of supervised machine learning with the decision tree algorithm resulted in a particularly efficient and accurate synthesis procedure due to its intuitive implementation and simplified and effective data analysis modelling.

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UWB cotton leaf design microstrip-fed printed monopole antenna

Cited by 9 publications

References 3 publications

Fractal and Polar Microstrip Antennas and Arrays for Wireless Communications

Fractal and Polar Microstrip Antennas and Arrays for Wireless Communications

Review of Recent Advancement on Nature/Bio-Inspired Antenna Designs

Synthesis of Multiband Frequency Selective Surfaces Using Machine Learning With the Decision Tree Algorithm

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