concentric circular ring array
Fast Synthesis of Large Planar Arrays Using Active Element Pattern Method and Fine-Grained Parallel Micro-Genetic Algorithm
... between array elements can be taken into ...linear array problems. And for a multiple concentric circular ring array, we only need to obtain one-sixth of all ...60-element ...
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Comparative Performance of Gravitational Search Algorithm and Modified Particle Swarm Optimization Algorithm for Synthesis of Thinned Scanned Concentric Ring Array Antenna
... planar array in the x-z plane directs the beam peak to any direction off the broadside along the same ...in concentric ring array of isotropic antennas scanned in the x-z plane result in a ...
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Design of Multi-Beam Rhombus Fractal Array Antenna Using New Geometric Design Methodology
... Abstract—Fractal array antenna design methodology is an artistic type of design ...fractal array antennas are also called as artistic array ...a concentric elliptical ring sub ...
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Synthesis of Thinned Planar Concentric Circular Antenna Arrays --- a Differential Evolutionary Approach
... antenna array design is one of the most important electromagnetic optimization problems of current ...multiple concentric planar thinned circular ring arrays of uniformly excited isotropic ...
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Bandwidth Improvement of Reflectarrays Using Single-Layered Double Concentric Circular Ring Elements
... double concentric circular ring elements on various sub-wavelength grids for reflectarray bandwidth improvement has been studied both numerically and ...double concentric circular ...
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Optimum Directivity Patterns of Concentric Ring Arrays with Dipole Radiators for Wireless Communications
... A ring arrays Designed by Redlich [4] for aircraft ...a ring array that radiates a prescribed pattern in the plane of the ring is ...of ring arrays for which i) the serration in the ...
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Cosine Alpha Tapered Beamforming Window for Uniform Concentric Circular Array using in High Altitude Platform System
... Concentric circular array contain many concentric ...The circular array consists of elements are placed in circular rings of different diameters, half wave separation ...
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Analysis of Ten Concentric Circular Ring Antenna Array for Radar and Wireless Applications
... small concentric ring arrays to produce desired pattern with maximum directivity and low sidelobe ...Thinned array are presented by Hussain et ...null. concentric ring array ...
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Opposition Based Gravitational Search Algorithm for Synthesis Circular and Concentric Circular Antenna Arrays
... single-ring Circular Antenna Arrays (CAA) of set 8, 10 and 12 elements and non-uniform 3-ring Concentric Circular Antenna Array ...3-ring concentric circular ...
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Concentric Circular Antenna Array Synthesis Using Comprehensive Learning Particle Swarm Optimizer
... Uniform concentric circular array (UCCA) is CCAA where all the elements in the array are uniformly excited and the interelement spacing in individual ring is kept almost half of the ...
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Generation of Narrow Beams using Differential Evolution Algorithm from Circular Arrays
... a concentric ring array with constant ring spacing was approximated as a truncated Fourier-Bessel- Series, from which the excitation weights for each ring were obtained to generate ...
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DOA and Polarization Estimation Algorithm Based on the Virtual Multiple Baseline Theory
... the array inter-sensor spacing is less than half ...extended array aperture can offer enhanced array resolution but will cause the phase ambiguity of angle ...of array aperture extension is ...
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Solving the general inter-ring distances optimization problem for concentric ring electrodes to improve Laplacian estimation
... Noninvasive concentric ring electrodes (CREs) have been shown to estimate the surface Laplacian, the second spatial derivative of the potentials on the scalp surface for the case of electroencephalogram ...
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PERFORMANCE OF MAIN BEAM STEERING AT DIFFERENT ANGLE USING GENETIC ALGORITHM.Pradeep Malviya, Prof. Giriraj Prajapati, Prof. A. C. Tiwari, Mr. Vijit Mishra
... linear array is shown in Figure ...antenna array is bigger than the size of antenna array, it can be considered those signals are in the form of plane waves, each antenna element receives the same ...
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Circular array techniques for sonar applications
... equally-spaced circular array are of the same structure as the corresponding signal- only covariance matrix and radiation pattern of an equally-spaced linear array under element-space formulation, ...
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A Mechanical Device for Lifting Water from Wells
... climb the next frame just at the moment the broader side reaches the lower end of the frame and the rotation will continue due to gravitational effect. It is to mention that if the difference between the radii of the ...
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Reconfigurable Circular Ring Antenna for Wireless Application
... [8] Chen, S.-H., Row, J.-S., Wong, K.-L.: ‘Reconfigurable square-ring patch antenna with pattern diversity’, IEEE Trans. Antennas Propag., 2007, 55, (2), pp. 472–475. [9] Deo, P., Mehta, A., Mirshekar-Syahkal, D., ...
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SLL Reduction of Spherical Array Using Thinning
... antenna array with uniform amplitude distributionis done up to 21 ...spherical array as the number of rings increased from 3 to ...spherical array best SLL value is obtained is ...
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Analysis of Concentric Split Ring Square Element for Broadband Reflectarray Antenna
... The resonant behaviour of a periodic square element is determined by the element size, periodicity and the electrical properties of the substrate materials. The phase is controlled by varying the square length, a and the ...
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Radial-basis-function calculations of buoyancy-driven flow in concentric and eccentric annuli
... In this paper, we present the 1D-IRBFN technique for the sim- ulation of buoyancy-driven flow governed by nonlinear par- tial differential equations (PDEs) and defined in concentric and eccentric annuli. For ...
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