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# IEEE Transactions on Antennas and Propagation

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Displaying Results 1 - 25 of 50

Publication Year: 2011, Page(s):C1 - 1437
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• ### IEEE Transactions on Antennas and Propagation publication information

Publication Year: 2011, Page(s): C2
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• ### Analytical Model for Calculating the Radiation Field of Microstrip Antennas With Artificial Magnetic Superstrates: Theory and Experiment

Publication Year: 2011, Page(s):1438 - 1445
Cited by:  Papers (19)
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A fast analytical solution for the radiation field of a microstrip antenna loaded with a generalized superstrate is proposed using the cavity model of microstrip antennas in conjunction with the reciprocity theorem and the transmission line analogy. The proposed analytical formulation for the antenna's far-field is much faster when compared to full-wave numerical methods. It only needs 2% of the t... View full abstract»

• ### Multi-Frequency, Linear and Circular Polarized, Metamaterial-Inspired, Near-Field Resonant Parasitic Antennas

Publication Year: 2011, Page(s):1446 - 1459
Cited by:  Papers (61)
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Several metamaterial-inspired, electrically small, near-field resonant parasitic antennas are presented. Both electric and magnetic couplings to the parasitic are compared and contrasted. The electric-coupled versions are shown to be more efficient and to have more bandwidth. The evolution of circular polarized designs from their linear counterparts by introducing multiple parasitics having differ... View full abstract»

• ### Left-Handed Wire Antennas Over Ground Plane With Wideband Tuning

Publication Year: 2011, Page(s):1460 - 1471
Cited by:  Papers (12)
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Tunable left-handed (LH) wire antennas over a ground plane are presented in this paper. These antennas are small and have a wide tuning bandwidth and are matched to 50 Ω within the operation range. Two kinds of antennas have been developed: the monopole antenna and the half-loop antenna over ground plane. In both cases, the antennas are designed, manufactured and measured at fixed frequenci... View full abstract»

• ### Switched-Band Vivaldi Antenna

Publication Year: 2011, Page(s):1472 - 1480
Cited by:  Papers (48)  |  Patents (1)
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A novel Vivaldi antenna with added switched band functionality to operate in a wideband or narrowband mode is presented. The antenna reconfiguration is realized by inserting four pairs of switchable ring slots into the ground plane of the structure. A wide bandwidth mode from 1.0-3.2 GHz and three narrowband modes can be selected. A fully functional prototype with PIN diodes switches has been deve... View full abstract»

• ### Focusing Properties of Fresnel Zone Plate Lens Antennas in the Near-Field Region

Publication Year: 2011, Page(s):1481 - 1487
Cited by:  Papers (25)
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Some focusing properties of Fresnel zone plate (FZP) lens antennas in the near-field region are presented at the ka-band. Simulated and measured results of the FZP antenna show displacement of the maximum intensity of the electric field along the axial direction from the focal point toward the antenna aperture. This displacement increases as the antenna's focal length increases. In addition, the f... View full abstract»

• ### Wideband Millimeter-Wave Substrate Integrated Waveguide Slotted Narrow-Wall Fed Cavity Antennas

Publication Year: 2011, Page(s):1488 - 1496
Cited by:  Papers (38)
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A technique to design substrate integrated waveguide (SIW) slotted narrow-wall fed cavity antennas is presented and investigated for millimeter-wave systems. The proposed antenna consists of a feeding SIW and a slotted narrow-wall fed high permittivity dielectric loaded substrate integrated cavity (SIC) in a co-planar configuration. First, the cavity modes are analyzed for selecting the feeding st... View full abstract»

• ### Radiation Theory of the Plasma Antenna

Publication Year: 2011, Page(s):1497 - 1502
Cited by:  Papers (7)
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Several basal theoretical problems for the radiation of plasma antenna are investigated. The system equations are obtained according to the rule of the disturbing current, which is excited by surface waves on the interface between a plasma column and a dielectric tube, and the radiation theory of dielectric antennae. The analysis indicates that there are two kinds of mechanisms to explain the radi... View full abstract»

• ### Self-Consistent Analysis of Cylindrical Plasma Antennas

Publication Year: 2011, Page(s):1503 - 1511
Cited by:  Papers (4)
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Plasma can be used to create antennas: its conductivity is given by free electrons resulting from gas ionization. This process is obtained with the application of an intense electromagnetic field to a glass tube filled with a low pressure gas. The pump signal needed for ionization and gas discharge parameters have to be carefully chosen in order to optimize plasma antenna design and realization; i... View full abstract»

• ### A Slot Antenna Array With Low Mutual Coupling for Use on Small Mobile Terminals

Publication Year: 2011, Page(s):1512 - 1520
Cited by:  Papers (6)
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In order to take full advantage of the benefits to be obtained by using MIMO techniques for mobile communications, it is necessary to use an antenna array which is both compact and also has low mutual coupling between ports. Generally these requirements are conflicting and to achieve them simultaneously is the subject of much research. In this paper a novel design for a two element cavity backed s... View full abstract»

• ### An E-Band Partially Corporate Feed Uniform Slot Array With Laminated Quasi Double-Layer Waveguide and Virtual PMC Terminations

Publication Year: 2011, Page(s):1521 - 1527
Cited by:  Papers (17)
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A partially corporate feeding waveguide located below the radiating waveguide is introduced to a waveguide slot array to enhance the bandwidth of gain. A PMC termination associated with the symmetry of the feeding waveguide as well as uniform excitation is newly proposed for realizing dense and uniform slot arrangement free of high sidelobes. To exploit the bandwidth of the feeding circuit, the 4 ... View full abstract»

• ### Ultrawide Bandwidth 2 $,times,$2 Microstrip Patch Array Antenna Using Electromagnetic Band-Gap Structure (EBG)

Publication Year: 2011, Page(s):1528 - 1534
Cited by:  Papers (23)
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Four types of EBG structures are proposed and used in the design of a patch antenna array to improve the bandwidth, gain and reduce the overall array size. The four ground plane designs for the 2 × 2 microstrip patch antenna array (MPAA) are; spiral artificial magnetic conductor (SAMC) ground plane, an SAMC embedded with a large spiral artificial magnetic conductor (LSAMC), an SAMC embedded... View full abstract»

• ### Green's Function Based Equivalent Circuits for Connected Arrays in Transmission and in Reception

Publication Year: 2011, Page(s):1535 - 1545
Cited by:  Papers (20)
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Connected arrays constitute the only family of antenna arrays for which the spectral Green's Functions have been derived analytically. This formalism is extended here to the receiving case. When the arrays are assumed to be infinitely extended and periodically excited, rigorous equivalent networks can be derived to represent the electromagnetic field distribution in transmission and/or reception. ... View full abstract»

• ### Rectangular Thinned Arrays Based on McFarland Difference Sets

Publication Year: 2011, Page(s):1546 - 1552
Cited by:  Papers (27)
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A new class of analytical rectangular thinned arrays with low peak sidelobe level (PSL) is introduced. The proposed synthesis technique exploits binary sequences derived from McFarland difference sets to design thinned layouts on a lattice of P × P(P+2) positions for any prime P. The pattern features of the arising massively-thinned arrangements characterized by only P × (P+1) active... View full abstract»

• ### Incremental Fringe Formulation for a Complex Source Point Beam Expansion

Publication Year: 2011, Page(s):1553 - 1561
Cited by:  Papers (6)
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An incremental fringe formulation (IFF) for the scattering by large metallic objects illuminated by electromagnetic complex source points (CSPs) is presented. This formulation has two main advantages. First, it improves the accuracy of physical optics (PO) computations by removing spurious scattered field contributions and, at the same time, substituting them with more accurate Incremental Theory ... View full abstract»

• ### Modal Analysis and Wave Propagation in Finite 2D Transmission-Line Metamaterials

Publication Year: 2011, Page(s):1562 - 1570
Cited by:  Papers (13)
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In this paper we examine the propagation of plane waves and Gaussian beams in 2D periodic grids constructed with lumped reactive immitances. We demonstrate the equivalence between the Bloch/Floquet modal description and the multiple coupled-line modal analysis of finite-sized periodic grids. This establishes that the Floquet analysis of 2D metamaterial negative-refractive-index grids and the assoc... View full abstract»

• ### Low Frequencies and the Brillouin Precursor

Publication Year: 2011, Page(s):1571 - 1579
Cited by:  Papers (5)
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When an electromagnetic step-modulated sine wave propagates through a causal dielectric material, the signal evolves into a Brillouin precursor whose peak amplitude point decays algebraically for large, yet finite, propagation distances. This algebraic decay is an apparent contradiction to the Bouger-Lambert-Beer law, which states that each nonzero frequency component of the pulse decays exponenti... View full abstract»

• ### Mixed-Impedance Boundary Conditions

Publication Year: 2011, Page(s):1580 - 1586
Cited by:  Papers (10)
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A novel set of isotropic electromagnetic boundary conditions generalizing some of the recently introduced boundary conditions is introduced. For a planar boundary it is required that the boundary appears as an impedance boundary for the TE and TM components of the field with different surface impedances in the general case. Thus, such conditions can be dubbed as mixed-impedance boundary conditions... View full abstract»

• ### Uniform Ray Description for the PO Scattering by Vertices in Curved Surface With Curvilinear Edges and Relatively General Boundary Conditions

Publication Year: 2011, Page(s):1587 - 1596
Cited by:  Papers (18)
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A new high-frequency analysis is presented for the scattering by vertices in a curved surface with curvilinear edges and relatively general boundary conditions, under the physical optics (PO) approximation. Both, impenetrable (e.g., impedance surface, coated conductor) as well as transparent thin sheet materials (e.g., thin dielectric, or frequency selective surface) are treated, via their Fresnel... View full abstract»

• ### A Novel Microwave Tomography System Using a Rotatable Conductive Enclosure

Publication Year: 2011, Page(s):1597 - 1605
Cited by:  Papers (14)  |  Patents (1)
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A novel microwave tomography (MWT) setup is proposed wherein a rotatable conductive enclosure is used to generate electromagnetic scattering data that are collected at each static position of the enclosure using a minimal antenna array having as few as only four co-resident elements. The antenna array remains fixed with respect to the target being imaged and only the boundary of the conductive enc... View full abstract»

• ### Super-Resolution UWB Radar Imaging Algorithm Based on Extended Capon With Reference Signal Optimization

Publication Year: 2011, Page(s):1606 - 1615
Cited by:  Papers (14)
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Near field radar employing ultrawideband (UWB) signals with its high range resolution has great promise for various sensing applications. It enables non-contact measurement of precision devices with specular surfaces like an aircraft fuselage and wing, or a robotic sensor that can identify a human body in invisible situations. As one of the most promising radar algorithms, the range points migrati... View full abstract»

• ### Effective Local Absorbing Boundary Conditions for a Finite Difference Implementation of the Parabolic Equation

Publication Year: 2011, Page(s):1616 - 1625
Cited by:  Papers (1)
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Domain truncation by transparent boundary conditions for open problems where parabolic equation is utilized to govern wave propagation are in general computationally costly. We utilize two approximations to a convolution-in-space type discrete boundary condition to reduce the cost, while maintaining accuracy in far range solutions. Perfectly matched layer adapted to the Crank-Nicolson finite diffe... View full abstract»

• ### TD-UTD Solutions for the Transient Radiation and Surface Fields of Pulsed Antennas Placed on PEC Smooth Convex Surfaces

Publication Year: 2011, Page(s):1626 - 1637
Cited by:  Papers (12)
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A time-domain formulation of the uniform geometrical theory of diffraction (TD-UTD) is developed for predicting the transient radiation and surface fields of elemental pulsed antennas placed directly on a smooth perfectly conducting, arbitrary convex surface. The TD-UTD solution is obtained by employing an analytic time transform (ATT) for inverting into time the corresponding frequency domain UTD... View full abstract»

• ### Non-Conformal Domain Decomposition Method With Mixed True Second Order Transmission Condition for Solving Large Finite Antenna Arrays

Publication Year: 2011, Page(s):1638 - 1651
Cited by:  Papers (18)
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A non-overlapping and non-conformal domain decomposition method (DDM) is presented for modeling large finite antenna arrays. Two major benefits of the proposed DDM: (a) A mixed true second order transmission condition (SOTC) with corner edge penalty terms is developed to facilitate fast convergence in the DDM iterations. Numerical experiments indicate that the convergence of DDM with the aforement... 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