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# IEEE Transactions on Antennas and Propagation

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Displaying Results 1 - 25 of 47

Publication Year: 2006, Page(s):c1 - 2697
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• ### IEEE Transactions on Antennas and Propagation publication information

Publication Year: 2006, Page(s): c2
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• ### Improved Physical Theory of Diffraction: Removal of the Grazing Singularity

Publication Year: 2006, Page(s):2698 - 2702
Cited by:  Papers (11)
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Physical theory of diffraction based on the concept of elementary edge waves [P. Ya. Ufimtsev, Electromagnetics, vol. 11, no. 2, pp. 125-160, 1991] is well suited for analysis of backscattering from perfectly conducting objects with edges. However, it needs to be improved for the investigation of forward scattering, especially in the directions grazing to the edge faces, where it predicts infinite... View full abstract»

• ### Diffraction Corrections to Fields Specularly Reflected by a Smooth 2-D Surface

Publication Year: 2006, Page(s):2703 - 2712
Cited by:  Papers (5)
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Diffraction corrections to the geometric optics results were derived for a general case of specular reflection from a smooth, perfectly conducting 2-D body. The general equations are applied to the specific case when the surface directrix in the vicinity of the specular point can be approximated by the arc of the conic section curve (parabola, circle, ellipse, or hyperbola). These results extend u... View full abstract»

• ### An Integral Formulation for the Electrodynamics of Metallic Carbon Nanotubes Based on a Fluid Model

Publication Year: 2006, Page(s):2713 - 2724
Cited by:  Papers (65)  |  Patents (1)
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An integral formulation to model, in the frequency domain, the electromagnetic response of three-dimensional (3-D) structures formed by metallic carbon nanotubes and conductors, within the framework of the classical electrodynamics, is described. The conduction electrons of the metallic nanotube are modeled as an infinitesimally thin cylindrical layer of compressible fluid, whose dynamics are desc... View full abstract»

• ### Applications of the Maxwellian Circuits to Linear Wire Antennas and Scatterers

Publication Year: 2006, Page(s):2725 - 2730
Cited by:  Papers (5)
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The recently proposed theory of Maxwellian circuits is demonstrated for applications to linear wire scatterers as well as to linear antennas. It is shown that for each integral equation of thin wire type, there exist coupled linear ordinary differential equations of currents and voltages, the solutions of which are identical to the integral equation, if the same boundary conditions of the integral... View full abstract»

• ### A Transmission Line Method to Compute the Far-Field Radiation of Arbitrarily Directed Hertzian Dipoles in a Multilayer Dielectric Structure: Theory and Applications

Publication Year: 2006, Page(s):2731 - 2741
Cited by:  Papers (33)
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A transmission line method is proposed to compute the far-field radiation patterns of arbitrarily directed Hertzian dipoles that are embedded in a multilayer dielectric structure. The evaluation of the field in the far-zone region is transformed into the evaluation of the field inside the multilayer structure by applying the reciprocity theorem. The horizontal field component inside the structure ... View full abstract»

• ### Fields in Planar Anisotropic Transmission-Line Metamaterials

Publication Year: 2006, Page(s):2742 - 2749
Cited by:  Papers (25)  |  Patents (2)
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An electromagnetic analysis of wave propagation in planar anisotropic transmission-line metamaterials is presented. It is shown that a planar square-celled grid, series-loaded with orthogonal inductors and capacitors and positioned over a ground plane, is magnetically anisotropic and may be described in terms of a diagonal permeability tensor. Resonance cone field concentrations form when two of t... View full abstract»

• ### Effective Length of a Receiving Antenna in a Streaming Plasma

Publication Year: 2006, Page(s):2750 - 2756
Cited by:  Papers (4)
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The root-mean-square (r.m.s) voltage induced on a receiving dipole antenna by incident potential waves in a streaming otherwise isotropic plasma in the resonance frequency band is calculated. The open-circuit voltage on antenna terminals is the product of the wave electric field strength at the receiving point and the effective length of the receiving antenna Leff. The effective length ... View full abstract»

• ### New Radiation$Q$Limits for Spherical Wire Antennas

Publication Year: 2006, Page(s):2757 - 2763
Cited by:  Papers (127)
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Considerable work has been published to define the minimum possible antenna radiation Q as a function of the antenna size and gain. Many of the derivations assume an enclosing sphere and deal only with the fields external to this sphere. As a result, the limits tend to be overly optimistic, and realizable antennas generally have Q's considerably higher than the minimum values predicted by these th... View full abstract»

• ### Quantum Particle Swarm Optimization for Electromagnetics

Publication Year: 2006, Page(s):2764 - 2775
Cited by:  Papers (76)
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A new particle swarm optimization (PSO) technique for electromagnetic applications is proposed. The method is based on quantum mechanics rather than the Newtonian rules assumed in all previous versions of PSO, which we refer to as classical PSO. A general procedure is suggested to derive many different versions of the quantum PSO algorithm (QPSO). The QPSO is applied first to linear array antenna ... View full abstract»

• ### Broadband and Multiband Antenna Design Using the Genetic Algorithm to Create Amorphous Shapes Using Ellipses

Publication Year: 2006, Page(s):2776 - 2782
Cited by:  Papers (26)
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A method is demonstrated for generating compact, broadband and multiband antennas using ellipses to create new amorphous shapes with greater bandwidth and less return loss that previously demonstrated. Four designs are presented including a tri-band patch antenna optimized for low reflection loss at 1.6, 1.8, and 2.45 GHz. A broadband patch is designed for 1.9-2.1 GHz. A dual-band design embedded ... View full abstract»

• ### Scale Changing Technique for the Electromagnetic Modeling of Planar Self-Similar Structures

Publication Year: 2006, Page(s):2783 - 2789
Cited by:  Papers (18)
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A scale changing approach is proposed for analyzing the electromagnetic scattering from discrete self-similar (e.g., log-periodic or pre-fractal) planar structures. Such structures present metallic patterns at multiple scale levels and are viewed here as the superposition of multiple domains enclosed with appropriate boundary conditions. In each domain higher-order modes provide the accurate local... View full abstract»

• ### Broadband Planar Superstrate Antenna for Integrated Millimeterwave Transceivers

Publication Year: 2006, Page(s):2790 - 2796
Cited by:  Papers (71)  |  Patents (10)
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In this paper, a new planar superstrate antenna concept suitable for integration with millimeter wave (mmWave) transceiver integrated circuits (ICs) is presented. The antenna is printed on the bottom of a dielectric superstrate with a ground plane below. The new design provides high bandwidth and high efficiency. Two different examples of the new concept have been designed and manufactured for the... View full abstract»

• ### Analysis of Printed Antennas Mounted on a Coated Circular Cylinder of Arbitrary Size

Publication Year: 2006, Page(s):2797 - 2807
Cited by:  Papers (12)
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An efficient numerical algorithm for the analysis of printed antennas on a dielectric coated circular cylinder is presented. The formulation employs the spectral domain approach. Green's function is evaluated via Olver's uniform asymptotic expansions. The Fourier summation is transformed into integration and the asymptotic part of the integral is evaluated in closed form. The whole procedure resul... View full abstract»

• ### A Multiresolution Model of Transient Microwave Signals in Dispersive Chiral Media

Publication Year: 2006, Page(s):2808 - 2812
Cited by:  Papers (2)
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A multiresolution in time domain method is used to model the propagation of transient signals through dispersive chiral media. The modeling of these media requires the computation of convolution integrals, whose resolution level may be increased by introducing wavelets in the time dependence of the fields View full abstract»

• ### Single-Layer Waveguide Feed for Uniform Plane TEM-Wave in Oversized-Rectangular Waveguide With Hard-Surface Sidewalls

Publication Year: 2006, Page(s):2813 - 2819
Cited by:  Papers (6)
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A new single-layer waveguide feed is presented for excitation of the dominant quasi-TEM mode in oversized-rectangular waveguide with hard-surface sidewalls. Coupling windows are cut on the narrow wall of the waveguide feed and are cascaded on the same layer as the oversized waveguide. The feed is compact in terms of the length compared to the conventional hard horns and inhomogenious transformers.... View full abstract»

• ### Beamforming for Phased Arrays on Vibrating Apertures

Publication Year: 2006, Page(s):2820 - 2826
Cited by:  Papers (4)
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A beamforming approach for phased arrays on vibrating apertures is proposed. The essence is to dynamically calibrate the antenna element position errors due to aperture vibrations. This is achieved by estimating element positions through the aid of a few near field reference sources attached to the antenna. The reference sources need to be mounted on rigid frames and be impervious to vibrations. T... View full abstract»

• ### Dual-Polarization Dual-Coverage Reflectarray for Space Applications

Publication Year: 2006, Page(s):2827 - 2837
Cited by:  Papers (87)  |  Patents (2)
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A breadboard of a three-layer printed reflectarray for dual polarization with a different coverage in each polarization has been designed, manufactured, and tested. The reflectarray consists of three layers of rectangular patch arrays separated by a honeycomb and backed by a ground plane. The beam shaping for each polarization is achieved by adjusting the phase of the reflection coefficient at eac... View full abstract»

• ### Cassegrain Offset Subreflector-Fed X/Ka Dual-Band Reflectarray With Thin Membranes

Publication Year: 2006, Page(s):2838 - 2844
Cited by:  Papers (12)  |  Patents (1)
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The development of a 0.75-m Cassegrain offset subreflector-fed X/Ka dual-band reflectarray antenna is presented. The subreflector (SR) is fabricated using combinations of prescribed geometric parameters and two left-hand circularly polarized microstrip patch arrays are designed as feed networks with one covering X-band and the other covering Ka-band. The phase corrections in the reflectarray requi... View full abstract»

• ### Equivalent Strip Width for Cylindrical Wire for Mesh Reflector Antennas: Experiments, Waveguide, and Plane-Wave Simulations

Publication Year: 2006, Page(s):2845 - 2853
Cited by:  Papers (5)
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This paper presents the verification of the equivalent strip width for a cylindrical wire for mesh reflector antennas with experimental and numerical analysis and compares waveguide and plane-wave simulations. For experimental purposes, the transmission and reflection characteristics of copper strips and copper wires were measured. For numerical analysis, a model of the experimental setup was desi... View full abstract»

• ### Axis-Displaced Dual-Reflector Antennas for Omnidirectional Coverage With Arbitrary Main-Beam Direction in the Elevation Plane

Publication Year: 2006, Page(s):2854 - 2861
Cited by:  Papers (16)  |  Patents (1)
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The synthesis of classical dual-reflector antennas suited to provide omnidirectional coverages with arbitrary main-beam direction in the elevation plane is discussed. Both sub- and main reflectors are bodies of revolution generated by axis-displaced conic sections, so to transform a spherical radiation emanating from the antenna principal focus (at the symmetry axis) into an equiphase field distri... View full abstract»

• ### A Multiband Antenna for Satellite Communications on the Move

Publication Year: 2006, Page(s):2862 - 2868
Cited by:  Papers (7)  |  Patents (1)
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The design of a multiband reflector antenna for an on-the-move satellite communications terminal is presented. This antenna was designed to operate with numerous modern and future military communications satellites, which in turn requires the antenna to be capable of operation at multiple frequencies and polarizations while maintaining high aperture efficiency. Several feed antenna concepts were d... View full abstract»

• ### Low Altitude Propagation Effects &#8212; A Validation Study of the Advanced Propagation Model (APM) for Mobile Radio Applications

Publication Year: 2006, Page(s):2869 - 2877
Cited by:  Papers (10)
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VHF signal strength data from two NOAA weather radio transmitters, located in southern California and southwestern Arizona, were collected over a wide range of topography ranging from relatively flat to mountainous terrain. Signal strength data were collected using a mobile receiver traveling from 20 km to over 100 km, with the receiving antenna at a constant height of 2.2 meters above the ground.... View full abstract»

• ### Antenna Link Transfer Function Factorization Applied to Optimized Channel Design

Publication Year: 2006, Page(s):2878 - 2889
Cited by:  Papers (9)
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A channel broadband factored model is developed and numerically verified with a method of moment (MoM) technique for design of optimized UWB links with real, dispersive antennas. In this study, two-antenna link transfer functions are decomposed into port-load and full-wave dependent components based on general linearity and reciprocity in electromagnetics. Specifically, the port-related components... View full abstract»

## Aims & Scope

IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas.

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## Meet Our Editors

Editor-in-Chief                                             Danilo Erricolo