Frequency Selective Surfaces With Fractal Four Legged Elements

Zhang, Jiancheng; Yin, Yingzeng; Ma, and Jin-Ping

doi:10.2528/pierl08112301

Cited by 20 publications

(11 citation statements)

References 12 publications

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“…Broadband antennas are suitable to overcome the complexities inherent in multiservice antenna technology, while CP antennas can help mitigate multipath effects in these applications. Various broadband CP antennas were reported [1][2][3][4][5][6][7][8][9]. These antennas used a slot or a patch of various shapes as a radiating element, and a microstrip or a coplanar waveguide (CPW) feedline for excitation.…”

Section: Resultsmentioning

confidence: 99%

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Investigation and design of an ultra-wideband fractal ring antenna for notch applications

Rahimi

Heydari

Mansouri

et al. 2016

Microw. Opt. Technol. Lett.

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In this article, an ultra wideband ring antenna with a fractal formation for notch application is presented. The antenna was printed on FR-4 substrate, which was a low cost one with the relative permittivity of 4.4 and thickness of 1.6 mm. The total dimension of antenna was 50 mm 3 50 mm. It could be applied as a notch antenna for propagation rejection in IEEE 802.11a for instance by covering were as without conflicting with wireless systems. The prototype antenna presented in this article, has a rejection band at 5-6 GHz and covers the frequency range of 2.1-11 GHz with the VSWR of less than 2. For improvement of the notch frequencies and for obtaining dual notch band characteristic some changes in prototype antenna with a slot at fractal structure have been performed. The final antenna had dual notch band at 2.5 and 5.5 GHz. The current distribution in the notch frequency has been provided. The efficiency has also been checked for the entire frequency band. The maximum antenna gain was achieved between 2-8 dBi. All the simulations were done in HFSS and compared with the experimental results.

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Section: Resultsmentioning

confidence: 99%

“…Self-similar antennas are multiresonant in type and relatively small. Multiband characteristics have been associated with the self-similarity of the geometry [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation and design of an ultra-wideband fractal ring antenna for notch applications

Rahimi

Heydari

Mansouri

et al. 2016

Microw. Opt. Technol. Lett.

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“…For secondary or higher ordered grating lobe suppression, according to the diffraction theory, the size and periodicity of the resonant elements should be smaller than the wavelength of the incident radiation, otherwise the resonant optical properties of the FSS structure may be related to the coupling between adjacent elements, thus depending on the angle-of-incidence (AOI) of the incoming waves. Several resonant classical shapes for FSS design, for example, a circular loop [3], square loop [4,5], hexagonal [6], and fractal geometries [7,8] have been discussed based on the applications. Several resonant classical shapes for FSS design, for example, a circular loop [3], square loop [4,5], hexagonal [6], and fractal geometries [7,8] have been discussed based on the applications.…”

Section: Introductionmentioning

confidence: 99%

Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface

Bharti

Jha

Singh

et al. 2014

Int. j. microw. wirel. technol.

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Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface garima bharti 1 , kumud ranjan jha 2 , ghanshyam singh 1 and rajeev jyoti 3In this paper, the analysis and simulation of a novel geometrical structure of the frequency selective surface (FSS), which has been achieved through the conductive loading of the simple circular ring with wedge-shaped metal vanes has been discussed. The electrical performance and behavior of the proposed structure have been studied in Ku band (12-18 GHz) of the electromagnetic spectrum for satellite communication. We have radially optimized the proposed structure to enhance the performance, such as reflection and transmission bandwidth. We have also discussed the effect of incident electric field at 08, 108, 308, and 508 on the electrical performance of the proposed FSS. In addition to this, the effect of angular sensitivity on the proposed structure through increasing the number of conductive loaded wedge-shaped metal vanes is also explored. However, the structural parameters of the proposed FSS have been obtained through the synthesis technique. The analytical results obtained from the synthesis technique have been supported by the simulation results achieved through CST Microwave Studio as well as Ansoft high frequency structural simulator (HFSS), which are commercially available simulators based on the finite integral and finite-element technique, respectively. Furthermore, for validation of the numerical results, the Ansoft circuit simulator which is based on mixed potential integral equations (MPIE) and solved by the method-of-moment has also been used to obtain the reflection and transmission parameters through the values of inductance and capacitance, which have been achieved by the numerical analysis.

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“…The FSS can either block or pass electromagnetic waves of a certain frequency depending on its specific shape or structure. Numerous different resonant shapes have been used for FSS design, for example a circle [1], square [2], hexagon [3] and fractal geometries [4,5]. An FSS can be designed to function with a high-pass, low-pass, band stop or band pass filter response.…”

Section: Introductionmentioning

confidence: 99%

3d Frequency Selective Surfaces

Azemi¹,

Ghorbani²,

Rowe³

2012

PIER C

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Abstract-A novel 3D Frequency Selective Surface (FSS) architecture based on a circular ring unit element is presented. The circular ring was made 3D by creating a cylindrical element of a certain length, adding an extra degree of freedom into the structure. The length of the cylinder is shown through electromagnetic simulation to have a significant effect on the frequency characteristics of the FSS. Increasing the length of the cylinder can change the FSS from a band-stop to a band-pass filter response. The center frequency of both band pass and band stop responses can also be tuned with adjustment to the length. Dielectric materials are introduced in the center of the cylindrical unit cell elements to simultaneously obtain a stop and pass band with a sharp transition. For high dielectric filling materials, the 3D periodic structure exhibits negative refractive index metamaterial properties. A parametric analysis was conducted on these new cylindrical unit elements, and a prototype 3D FSS structure has been constructed and experimentally validated.

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Frequency Selective Surfaces With Fractal Four Legged Elements

Cited by 20 publications

References 12 publications

Investigation and design of an ultra-wideband fractal ring antenna for notch applications

Investigation and design of an ultra-wideband fractal ring antenna for notch applications

Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface

3d Frequency Selective Surfaces

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