PDF | In this paper, a robust linear programming beamformer (RLPB) is Sorry, there is no online preview for this file type. . Tracking and discriminating direction finding method based on robust capon beamforming and. A Comparison Of Beamforming Processing Techniques For Low Frequency Noise Filetype [PDF KB]. Viewer; Details; Supporting Files; Related beamforming algorithm known as Robust Capon Beamformer (RCB). This current study explores a novel method of extracting the This file type includes high resolution graphics and schematics when applicable. . a double- constrained robust capon beamforming algorithm is applied in the.
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An axisymmetric chiral radome has been analyzed numerically by using the method of moments. The chiral body is illuminated by a plane wave and the surface equivalence principle is used to replace the beanforming by equivalent electric and magnetic surface currents. The effect of adding chirality to a dielectric radome of revolution is beamfoeming throughout numerical results obtained for bodies of different shapes and material parameters.
Chiral materials can be used to design anti-reflective structures to control scattering cross section patterns of bodies.
ACES – The Applied Computational Electromagnetics Society
A computer program is developed for the chiral radome of revolution and examples of numerical calculations are given for a chiral spherical radome, a chiral cylindrical radome, and a chiral Von Karman radome. Numerical results for the chiral spherical radome are in excellent agreement with the exact ones obtained by the eigenfunction solution.
Moreover, the numerical results of the chiral Von Karman radome are in excellent agreement with the published results. This paper introduces a new array architecture, in which antenna elements are arranged in a spiral curve. The spiral array enhances ultra-wideband UWB pattern characteristics compared to alternative array geometries of similar elements, without requiring a complex feed network for frequency change compensation.
A number of examples are illustrated to demonstrate the array capability in broadband array designs. It is revealed that for the same number of elements beamfogming curvature lengths, a spiral array has a wider radiation bandwidth than the corresponding circular and linear algoritmh antennas. In addition, it is also demonstrated that the spiral architecture discussed here can be best suited for small antenna array applications. On the basis of the stretched coordinate perfectly matched layer SC-PML formulations, the Z-transform method, and D-B formulation, an efficient and unsplit-field implementation of the higher-order PML scheme with more than one pole is proposed to truncate the finite-difference time-domain FDTD lattices.
This method is completely independent of the material properties of the FDTD computational domain and hence can be applied to the modeling algoorithm arbitrary media without any modification. The proposed algorithm is validated through two numerical tests carried out in three dimensional and two dimensional domains.
It is shown in the numerical neamforming that the proposed PML formulations with the higher-order scheme are efficient in terms of attenuating both the low-frequency propagating waves and evanescent waves and reducing late-time reflections, and also hold much better absorbing performances than the conventional SC-PML and the convolutional PML CPML with the CFS scheme.
The paper presented a new design of a corner reflector antenna, fed through a dielectric coated slotted cylinder. An exact solution to a two dimensional problem is developed using the modal expansion solution for TM case. Computer program was developed to evaluate the radiation pattern, aperture conductance, and antenna gain. This antenna structure finds many applications on ships and airplanes in which the antenna is buried at corners of horizontal and vertical conducting planes.
The radiation from this antenna showed many new features, which could not be achieved by the conventional corner reflector antenna. In this paper, a novel compact printed quasi-Yagi antenna with a high gain of 8. The proposed antenna fed by a Ohm coplanar stripline CPS achieves a The stepped impedance resonator SIR structure is adopted to suppress the harmonic radiations in the binary array, which is fed by a 50 Ohm coplanar waveguide CPW. Due to its single-sided structure, this high gain antenna element and the binary heamforming have many advantages, such as easy fabrication, compactness, low profile, and low cost.
Sensor array – Wikipedia
The antenna and array can be widely applied in wireless communication systems, especially in wireless power transmission WPT system. Analysis of a system to measure the amplitude of harmonics of a signal in UHF band is presented. First, analytical considerations are proposed, in which multi harmonic signal is used as local oscillator signal.
The results are used to obtain optimal implementation by which conversion loss of mixer becomes minimal. The proposed method is implemented by single diode mixer. In mixer, harmonics of the desired signal to be measured are fed into RF port and a comb signal is synthesized to be fed into LO port to down convert the desired signal.
Bottle neck is the amplitude of each harmonic in comb signal fed in LO port of mixer. The proposed design is validated and optimized by ADS a full wave electromagnetic simulator. Optimization of conversion loss of the mixer boots the system bandwidth. In this paper, a novel microstrip power divider with a new technique for nth harmonic suppression is presented.
This technique is based on using fi,etype coupled tapered compact microstrip cappon cell FCTCMRC that inserted into a quarter-wavelength transmission line of the conventional Wilkinson power divider.
This cell is used to obtain high harmonic suppression. The proposed power divider not only impressively improves harmonic suppression, but also reduces the length of a quarter-wave line over The input and output return losses at 2 GHz are 48 and 44 dB, respectively. The insertion loss is about 3. The measurement results of the fabricated LPF are in good agreement with the simulation ones.
The unconditional stability and dispersion equations of the LOD-MRTD in two dimension 2D case are analyzed, and a 2D example is calculated to demonstrate these characteristics.
In this paper, a novel stochastic approach based on the Electromagnetism-Like mechanism is applied to the optimization of electromagnetic devices. In order to show the effectiveness of the algorifhm method, it has been demonstrated on a magnetizer by optimizing its pole face to obtain the desired sinusoidal magnetic flux density distribution.
In this paper, a simple numerical method based on the Newton iteration for improving the accuracy of the Conventional beam forming algorithm, the Capon beam forming algorithm, and the MUSIC algorithm for AOA Angle-of-Arrival estimation is presented.
The formulation is only for the update of the azimuth angle, while the extension to the update of the elevation angle and the azimuth angle can be implemented by taking into account the dependence of the array manifold on the elevation angle as well as the azimuth angle.
Note that, for estimation of the azimuth, both the Algotithm uniform circular array and the ULA uniform linear array can be employed, and that, for simultaneous estimation of the elevation and the azimuth angle, the UCA, not the ULA, should be adopted since ULA-based algorithm cannot uniquely estimate both filetypr azimuth and the elevation due to the ambiguity pertinent to the ULA structure.
We consider the array structure of the ULA and the UCA, but it is quite straightforward to extend the proposed scheme to an arbitrary array structure by simply modifying the array vector consistently with the specific array structure. Log in Membership Contact.