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# IEEE Transactions on Antennas and Propagation

## Issue 10  Part 2 • Oct. 2009

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 79

Publication Year: 2009, Page(s):C1 - 2958
| PDF (55 KB)
• ### IEEE Transactions on Antennas and Propagation publication information

Publication Year: 2009, Page(s): C2
| PDF (43 KB)
• ### A UWB Dipole Antenna With Enhanced Impedance and Gain Performance

Publication Year: 2009, Page(s):2959 - 2966
Cited by:  Papers (44)
| | PDF (862 KB) | HTML

A planar dipole antenna is proposed with enhanced impedance and gain performance across an ultrawideband (UWB) operating bandwidth of 3.1-10.6 GHz. The proposed antenna consists of two semi-elliptical-ended arms connected by a shorting bridge. With the shorting bridge, the length of the antenna is reduced and the radiation performance in terms of gain is improved especially at higher frequencies. ... View full abstract»

• ### Circular Dipole Antenna for Mode 1 UWB Radio With Integrated Balun Utilizing a Flex-Rigid Structure

Publication Year: 2009, Page(s):2967 - 2971
Cited by:  Papers (16)  |  Patents (2)
| | PDF (412 KB) | HTML

A fully integrated dipole antenna with balun for ultrawideband (UWB) radio utilizing a flexible and rigid printed circuit board is presented in this paper. The concept in this paper is to take advantage of the respective possibilities of the rigid and flexible parts. The balun utilizes broadside-coupled microstrips and is integrated in the rigid part of the printed circuit board, whereas the radia... View full abstract»

• ### Development of Low Profile Cavity Backed Crossed Slot Antennas for Planar Integration

Publication Year: 2009, Page(s):2972 - 2979
Cited by:  Papers (90)
| | PDF (1195 KB) | HTML

Single fed low profile cavity backed crossed slot antennas for dual frequency dual linear polarization and circular polarization applications are first presented in this paper. By employing the substrate integrated waveguide (SIW) technique in the antenna designs, the low profile backed cavity structure can be realized by using only a single layer of low cost printed circuit board (PCB) substrate.... View full abstract»

• ### Eigenmode Analysis of a Two Element Segmented Capped Monopole Antenna

Publication Year: 2009, Page(s):2980 - 2988
Cited by:  Papers (9)  |  Patents (2)
| | PDF (624 KB) | HTML

The behavior of a two element segmented capped monopole antenna is described in terms of three natural resonances of the antenna structure. A numerical eigenmode solver is used to derive the resonant frequency and Q-factor of the natural resonances, as well as the impedance properties of these modes when excited individually. The impedance of the antenna is described as a lumped element net... View full abstract»

• ### An Effective Technique for Symmetric Planar Monopole Antenna Miniaturization

Publication Year: 2009, Page(s):2989 - 2996
Cited by:  Papers (19)  |  Patents (2)
| | PDF (1512 KB) | HTML

The increase of mobile applications requires antennas ever smaller in form factor. In this paper, an effective method is presented for antenna size miniaturization of ultrawideband (UWB) monopole antennas with symmetric structure and perfect magnetic conductor (PMC) plane. Two small antennas are designed for pulsed UWB applications in the 3.1-10.6-GHz band with and without notch behavior in the ba... View full abstract»

• ### Low-Profile Folded Monopoles With Embedded Planar Metamaterial Phase-Shifting Lines

Publication Year: 2009, Page(s):2997 - 3008
Cited by:  Papers (17)
| | PDF (746 KB) | HTML

This paper presents the analysis, design and measurement of novel, low-profile, small-footprint folded monopoles employing planar metamaterial phase-shifting lines. These lines are composed of fully-printed spiral elements, that are inductively coupled and hence exhibit an effective high- mu property. An equivalent circuit for the proposed structure is presented, validating the operating principle... View full abstract»

• ### Efficiency of Electrically Small Dipole Antennas Loaded With Left-Handed Transmission Lines

Publication Year: 2009, Page(s):3009 - 3017
Cited by:  Papers (21)
| | PDF (759 KB) | HTML

A study of the efficiency of small dipole antennas loaded with a left-handed transmission line is described. The antenna is composed of a ladder network periodic structure of a number of unit cells. Left-handed performance can be obtained in straight or meandered capacitive-inductive (CL) lumped loading. Its performance is compared to a right-handed dipole with inductive (L) lumped loading. Differ... View full abstract»

• ### An Improved Comprehensive Learning Particle Swarm Optimization and Its Application to the Semiautomatic Design of Antennas

Publication Year: 2009, Page(s):3018 - 3028
Cited by:  Papers (38)
| | PDF (1567 KB) | HTML

In this paper, an improvement for comprehensive learning particle swarm optimization (CLPSO) is presented, which is called adaptive comprehensive learning particle swarm optimization (A-CLPSO). Its ability to seek optimal point is verified by some kinds of test functions. Then, the A-CLPSO is used to guide antenna design and a new design model called semiautomatic design is introduced. This model ... View full abstract»

• ### Inverted-FL Antenna With Self-Complementary Structure

Publication Year: 2009, Page(s):3029 - 3034
Cited by:  Papers (25)
| | PDF (1772 KB) | HTML

An inverted-FL antenna is proposal with a self-complementary structure. This unique design is realized by integrating an inverted-F antenna with a self-complementary structure and an inverted-L element. The proposed antenna with a volume of 10 times 10 times 45 mm3 achieves a constant impedance of 188 Omega without attaching a matching load required since a self-complementary antenna of... View full abstract»

• ### A Novel Pattern Diversity Reflector Antenna Using Reconfigurable Frequency Selective Reflectors

Publication Year: 2009, Page(s):3035 - 3042
Cited by:  Papers (17)  |  Patents (2)
| | PDF (2794 KB) | HTML

A radiation pattern diversity reflector antenna is investigated. Novel switchable frequency selective reflectors are designed and developed to construct a square corner reflector antenna. By controlling a switching device on the frequency selective reflector, one can make it opaque or transparent to a vertically polarized incident wave. This antenna is fed by a monopole. By configuring the switch ... View full abstract»

• ### 94 GHz Dual-Reflector Antenna With Reflectarray Subreflector

Publication Year: 2009, Page(s):3043 - 3050
Cited by:  Papers (45)  |  Patents (1)
| | PDF (1700 KB) | HTML

The design, construction and measured performance is described of an offset parabolic reflector antenna which employs a reflectarray subreflector to tilt the focused beam from the boresight direction at 94 GHz. An analysis technique based on the method of moments (MoM) is used to design the dual-reflector antenna. Numerical simulations were employed to demonstrate that the high gain pattern of the... View full abstract»

• ### Low Cost Reconfigurable Landstorfer Planar Antenna Array

Publication Year: 2009, Page(s):3051 - 3061
Cited by:  Papers (24)
| | PDF (1984 KB) | HTML

In this paper, we introduce a practical design for a Landstorfer planar antenna that can be implemented as a compact and low cost reconfigurable planar antenna array. The array, we propose, can have 360-degree coverage in azimuth and allows a wide variety of directive beams to be electronically selected while maintaining a simple structure, ease of manufacture and low cost with high efficiency. On... View full abstract»

• ### Improved Matching of Waveguide Focal Plane Arrays Using Patch Array Covers as Compared to Conventional Dielectric Sheets

Publication Year: 2009, Page(s):3062 - 3076
Cited by:  Papers (2)
| | PDF (2398 KB) | HTML

This paper presents the advantages of microstrip patch array covers as matching layers for waveguide arrays, as compared with the use of conventional dielectric sheets. It will be demonstrated that both types of covers can be tuned to improve the transmission levels of uncovered arrays at either low frequencies or over a very wide band. However, at low frequencies where the radiation performance t... View full abstract»

• ### Traveling Waves on Three-Dimensional Periodic Arrays of Two Different Alternating Magnetodielectric Spheres

Publication Year: 2009, Page(s):3077 - 3091
Cited by:  Papers (11)
| | PDF (533 KB) | HTML

An exact k-beta (dispersion) equation to within the dipole scattering approximation has been obtained for a 3D array of two different alternating magnetodielectric spheres. The dispersion equation has the form of equating to zero the determinant of a system of four homogeneous equations in the normalized scattered field coefficients. Computationally efficient expressions are obtained for th... View full abstract»

• ### Scanning Performances of Wideband Connected Arrays in the Presence of a Backing Reflector

Publication Year: 2009, Page(s):3092 - 3102
Cited by:  Papers (41)
| | PDF (830 KB) | HTML

In this paper, the scanning performances of connected arrays that include backing reflectors are investigated. The comparison between connected dipoles and slots is based on the properties of the corresponding Green's functions (GFs). The investigation reveals that connected arrays of dipoles are better suited to scan to wide angles (45deg), retaining the minimal number of transmit/receive (T/R) m... View full abstract»

• ### Design, Analysis, and Development of a Large Ka-Band Slot Array for Digital Beam-Forming Application

Publication Year: 2009, Page(s):3103 - 3109
Cited by:  Papers (18)
| | PDF (1022 KB) | HTML

This paper discusses the design, analysis, and development of a large Ka-band slot array for digital beam-forming application. The array consists of 160 times 160 elements in 16 subarrays for producing 16 digital beams in the receive mode. Infinite array mutual coupling model has been employed in the design and analysis models. Challenges posed in meeting the pattern and return loss specifications... View full abstract»

• ### Specific Absorption Rate and Current Densities in the Human Eye and Head Induced by the Telemetry Link of an Epiretinal Prosthesis

Publication Year: 2009, Page(s):3110 - 3118
Cited by:  Papers (14)  |  Patents (1)
| | PDF (2004 KB) | HTML

The fields induced in the human head by the wireless telemetry used for Second Sight Medical Product, Inc.'s epiretinal prosthesis system are characterized for compliance testing with international safety standards using a three-dimensional (3-D) finite-difference time-domain (FDTD) code in D-H formulation. The specific system under consideration utilizes an inductive link with a primary coil moun... View full abstract»

• ### A Thin Electromagnetic Absorber for Wide Incidence Angles and Both Polarizations

Publication Year: 2009, Page(s):3119 - 3125
Cited by:  Papers (104)
| | PDF (1138 KB) | HTML

A design for planar electromagnetic absorbers is presented. The performance of this absorber is maintained over a wide incidence angles and for both TE and TM polarization. The absorber is composed of a high-impedance surface comprising an array of patches over a grounded lossy dielectric slab perforated with metallic vias (wire medium). The main contribution of the paper is to demonstrate and pra... View full abstract»

• ### Broadband Characterization of Complex Permittivity for Low-Loss Dielectrics: Circular PC Board Disk Approach

Publication Year: 2009, Page(s):3126 - 3135
Cited by:  Papers (6)
| | PDF (683 KB) | HTML

We present a nondestructive method for determination of the permittivity and loss tangent of low-loss dielectrics using printed circuit board (PCB) circular disks. Because it utilizes multiple resonances, this method is in high precision and broadband (500 MHz-12 GHz), covering the UHF, GSM 850/1800, 802.11b/g, WiMax, WLAN, and UWB bands. The method is simple and accurate based on closed-form anal... View full abstract»

• ### On the Dual Basis for Solving Electromagnetic Surface Integral Equations

Publication Year: 2009, Page(s):3136 - 3146
Cited by:  Papers (22)
| | PDF (941 KB) | HTML

A powerful technique for solving electromagnetic (EM) surface integral equations (SIEs) for inhomogenous objects by the method of moments (MoM) involves the well-known Rao-Wilton-Glisson (RWG) basis function to represent the electric current and, for field orthogonality and numerical stability reasons, a variation of the RWG basis known as the ntilde X RWG basis (where ntilde is a unit normal vect... View full abstract»

• ### An ${cal H}^{2}$-Matrix-Based Integral-Equation Solver of Reduced Complexity and Controlled Accuracy for Solving Electrodynamic Problems

Publication Year: 2009, Page(s):3147 - 3159
Cited by:  Papers (35)
| | PDF (528 KB) | HTML

Using an H 2 matrix as the mathematical framework, we compactly represent a dense system matrix by a reduced set of parameters, thus enabling a significant reduction in computational complexity. The error bound of the H 2-matrix-based representation of an electrodynamic problem was derived. We show that exponential convergence with respect to the number of inter... View full abstract»

• ### First-Order Singular Basis Functions for Corner Diffraction Analysis Using the Method of Moments

Publication Year: 2009, Page(s):3160 - 3168
Cited by:  Papers (4)
| | PDF (530 KB) | HTML

This paper presents a set of divergence-conforming basis functions to model the behavior of surface currents near the edges and corners of an infinitely-thin, perfectly-conducting polygonal flat plate. The basis functions are derived by imposing the edge and corner conditions on the first-order basis functions. Current distributions obtained using the new set of basis functions are compared with t... View full abstract»

• ### A Wideband Electromagnetic Scattering Analysis Using MLFMA With Higher Order Hierarchical Vector Basis Functions

Publication Year: 2009, Page(s):3169 - 3178
Cited by:  Papers (17)
| | PDF (540 KB) | HTML

A method of the multilevel fast multipole algorithm (MLFMA) with the higher order hierarchical vector basis functions is introduced to solve the wideband electromagnetic scattering problems in frequency domain. Instead of employing different meshing grids at different frequencies, this new method requires only one coarse mesh generated at the lowest frequency of the given bandwidth. The scattering... View full abstract»

## Aims & Scope

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

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief                                             Danilo Erricolo