DESIGN OPTIMIZATION OF A BOW-TIE ANTENNA FOR 2.45 GHz RFID READERS USING A HYBRID BSO-NM ALGORITHM

Mahmoud, Korany R.

doi:10.2528/pier09102903

Cited by 49 publications

(33 citation statements)

References 26 publications

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“…As explained in previous literatures [6,[17][18][19], better results can be achieved using hybrid method combining two algorithms, global metaheuristics and local search algorithm. The global metaheuristics is used as an efficient algorithm to localize the "best" areas and the local search method is used to refine the results.…”

Section: Introductionmentioning

confidence: 98%

Parallel Implementation of Hybrid Gsa-Nm Algorithm for Adaptive Beam-Forming Applications

Mahmoud¹,

Hamad²

2014

PIER B

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Abstract-Recently researchers have great interest in using multi-core processors for applications requiring intensive parallel computing. In this paper, an approach for the implementation of hybrid parallel Gravitational Search Algorithm (GSA) and Nelder-Mead (NM) algorithm using open MultiProcessing (OPEN-MP) on multi-core processors is proposed for beam-forming applications. The proposed parallel GSA-NM algorithm is used to optimize the complex excitations, amplitudes and phases, of the adaptive array elements to synthesize the array beam-pattern. The array consists of 24-elements uniformly distributed in a circular configuration. To measure the performance of the proposed approach, the results are compared with those obtained using parallel hybrid CFO-NM, and PSO-NM Algorithms.

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Section: Introductionmentioning

confidence: 98%

Parallel Implementation of Hybrid Gsa-Nm Algorithm for Adaptive Beam-Forming Applications

Mahmoud¹,

Hamad²

2014

PIER B

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“…Similar radiating backgrounds have been extensively analyzed in many other works [8][9][10][11][12][13][14][15], while metamaterial geometries are considered in numerous treatises and studies [16][17][18][19][20][21]. Investigations on planar structures are contained in several analyses [22][23][24][25][26][27][28] and scattering is broadly examined in works such as [29] and [30].…”

Section: Introductory Commentsmentioning

confidence: 99%

Electromagnetic Scattering of the Field of a Metamaterial Slab Antenna by an Arbitrarily Positioned Cluster of Metallic Cylinders

Valagiannopoulos¹

2011

PIER

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Abstract-The operation of a slab antenna with low-index metamaterial substrate is affected by a cluster of metallic cylinders positioned in the near-field area. A semi-analytical solution of the defined boundary value problem is obtained based on the small size of the rods. Several different configurations are found to possess beneficial features concerning the total radiated power and the angle of directive emission. The deduced diagrams are independently validated and discussed, revealing certain conclusions. INTRODUCTORY COMMENTSSlab configurations with radiating and propagating properties have been extensively investigated in numerous publications. It has been stated [1] that a metamaterial ground plane can exhibit certain incidence angle-dependent reflection phases in order to support directional emissions. Similar structures can be utilized in designing a bianisotropic cloak fixed in a uniformly moving medium, according to the findings presented in [2]. The coordinate transformation technique has been also employed in examining Cartesian metamaterial substrates which not only improve the directive emission but also enhance the radiation efficiency as the dipole feed gets closer and closer to the metallic reflector [3]. Furthermore, transition slab layers have

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“…The main advantages of this kind of antennas can be summarized as follows: they are compatible with mobile terminal equipment where a thin profile and a light weight might be necessary; they are relatively low-cost than other manufacturing techniques; their bandwidths are narrow; they have normally moderate quality factors; and, they have enough antenna gain, that is needed in the indoor radio-communications links [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Design of a Microstrip Bowtie Antenna for Indoor Radio-Communications

et al. 2017

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Abstract. In this paper, a microstrip bowtie patch antenna (MBPA) for wireless indoor communications is carried out. Here, a microstrip transmission-line feed network was designed in order to match the MBPA. The proposed antenna uses a ground plane with the aim of narrowing down the back lobes in comparison with bowtie sheet antennas, which radiation pattern is omni-directional. The far-field pattern of the antenna was simulated using a finite-element numerical algorithm and obtained by interpolation employing nearfield equipment. The experimental results are described in detail intending to agree well with the simulated predictions. The antenna was designed, measured and built and its far field performance was evaluated with a 2.11 GHz resonant frequency. The azimuth and elevation antenna patterns, antenna gain and, the matching frequency were the main parameters obtained to analyze the antenna behaviour. The antenna has a gain approximately equal to 8.77 dBi and its beam-widths are higher than 100 o in E plane.

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DESIGN OPTIMIZATION OF A BOW-TIE ANTENNA FOR 2.45 GHz RFID READERS USING A HYBRID BSO-NM ALGORITHM

Cited by 49 publications

References 26 publications

Parallel Implementation of Hybrid Gsa-Nm Algorithm for Adaptive Beam-Forming Applications

Parallel Implementation of Hybrid Gsa-Nm Algorithm for Adaptive Beam-Forming Applications

Electromagnetic Scattering of the Field of a Metamaterial Slab Antenna by an Arbitrarily Positioned Cluster of Metallic Cylinders

Design of a Microstrip Bowtie Antenna for Indoor Radio-Communications

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