Flexible Sierpinski Carpet Fractal Antenna on a Hilbert Slot Patterned Ground

Radonić, Vasa; Palmer, K.D.; Stojanović, Goran; Crnojević‐Bengin, Vesna

doi:10.1155/2012/980916

Cited by 26 publications

(16 citation statements)

References 12 publications

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“…Fundamentally, fractal geometries are generated by repetition of a geometrical basic pattern with a number of iterations. Besides the conventional fractal geometries such as Koch, Sierpinski gasket and Hilbert curve, several patterns have been introduced for fractal antenna designs including X‐shaped, hexagonal tree shaped, octagonal fractal shaped and inner tapered tree shaped . Fractal antenna designs based on a high number of iterations lead to complex structures whereas those using few iterations result in larger structure size.…”

Section: Introductionmentioning

confidence: 99%

Compact dual‐band fractal hexagonal ring monopole antenna for RFID and GSM applications

Djafri

Challal

Azrar

et al. 2018

Micro & Optical Tech Letters

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A novel compact dual‐band fractal antenna suitable for radio frequency identification (RFID) and GSM 1800 applications is developed and presented in this paper. This is achieved by adequate combination of three slotted hexagonal fractal rings which resulted in a significantly reduced size structure that can operate in the frequency ranges [0.895‐0.962 GHz] and [1.706‐1.856 GHz] that cover the frequency bands allocated to the intended applications. The proposed antenna has been fabricated and its reflection coefficient measured where a good agreement is observed with the simulated results.

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Section: Introductionmentioning

confidence: 99%

Compact dual‐band fractal hexagonal ring monopole antenna for RFID and GSM applications

Djafri

Challal

Azrar

et al. 2018

Micro & Optical Tech Letters

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“…Reference [1] presents a curved strip dipole antenna combined to EBG reflector; References [2][3][4][5][6][7] present a curved micro strip antenna with the goal to miniaturize the structure. Furthermore, flexible wireless technologies requires the integration of flexible, light weight, compact, and low profile antennas, Authors in [9][10][11][12][13][14] developed antennas for various technologies with all this characteristics. In [15][16][17], authors present flexible antennas that are particularly suitable for use in wearable applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Conformal Printed Monopoles Antennas

Hachi¹,

Lebbar²,

Himdi³

2017

PIER Letters

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Abstract-This paper presents the development and design of flexible and conformal printed monopoles antennas. The main objective is to control the level of radiation in broadside antenna from zero to a maximum by changing the curvature of printed board. Two printed antennas types are considered: thin wire and disk monopole. Furthermore, with the curving radius R increasing, the classical null on the broadside radiation pattern disappears gradually for both wire and disk. Increasing the curvature radius of conformal flexible antenna while keeping all other parameters same, wire monopole antenna becomes mismatched while the disk monopole antenna which remains matched for all radius of curvatures. The simulated results of various monopoles are compared successfully with measurements.

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“…possibilities for electronics integration (by enabling direct writing on various surfaces), and component interconnection. As the electronics industry is moving more and more towards flexible substrates, additive production technologies provide cost-efficient fabrication of flexible products such as antennas (Mäntysalo and Mansikkamaki, 2009;Radonić et al, 2012) and sensors (Jeranče et al, 2012). This paper presents a combination of two technologies: 1 poly-jet technology for manufacturing of 3D platforms; and 2 Ink-jet technology for fabrication of electronic conductive parts of a variable interdigital capacitor.…”

Section: Introductionmentioning

confidence: 99%

Combining rapid prototyping techniques in mechanical engineering and electronics for realization of a variable capacitor

Stojanović

Mandić²,

Ćurčić³

et al. 2014

Rapid Prototyping Journal

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Purpose -This paper aims to present combination of poly-jet technology and ink-jet technology in a multidisciplinary way in order to exploit advantages of these rapid prototyping techniques in manufacturing a demonstrator device -a variable interdigital capacitor. Design/methodology/approach -The platform of 3D complex geometry, with optimized design and cavity under the capacitor's fingers (plates), was fabricated using Alaris 3D printer, whereas silver conductive segments were fabricated using Dimatix ink-jet printer and thanks to the mechanical flexibility the platform has been covered using these segments. Findings -When one side of the capacitor's structure changes angular position (in the range from 0 to 908) with reference to the fixed part, the variation in total capacitance is obtained. The total capacitance decreases (in the range from 20.2 to 1.5 pF) with decrease in effective overlapping area for the variation of angular position from 0 to 908 The maximum measured tuning ratio for the proposed design of the variable capacitor was 13.5:1. Research limitations/implications -Presented variable capacitor can be used for detection angular position in the range from 0 to 908. Practical implications -The new horizon has been opened combining the rapid prototyping equipment in electronics and mechanical engineering in an interdisciplinary way to manufacture, for the first time, variable capacitor using poly-jet and ink-jet technologies. These techniques do not require higher mask counts which makes the fabrication fast and cost-effective. Originality/value -This work, for the first time, demonstrates the combination of ALARIS 30 3D printer and Dimatix DMP-3000 materials deposition printer in order to fabricate the interdigital capacitor with complex 3D geometry. ALARIS 3D printer has been used for manufacturing plastic platform (with the possibility to precisely adjust angular position of one comb related to another) and Dimatix printer has been used to print silver conductive inks on flexible substrates (Kapton film), and this mechanically flexible structure was used to cover capacitor's fingers on the platform (assembly).

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Flexible Sierpinski Carpet Fractal Antenna on a Hilbert Slot Patterned Ground

Cited by 26 publications

References 12 publications

Compact dual‐band fractal hexagonal ring monopole antenna for RFID and GSM applications

Compact dual‐band fractal hexagonal ring monopole antenna for RFID and GSM applications

Flexible and Conformal Printed Monopoles Antennas

Combining rapid prototyping techniques in mechanical engineering and electronics for realization of a variable capacitor

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