# IEEE Transactions on Antennas and Propagation

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Displaying Results 1 - 25 of 50

Publication Year: 2011, Page(s):C1 - 349
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• ### IEEE Transactions on Antennas and Propagation publication information

Publication Year: 2011, Page(s): C2
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• ### The Parametric Optimization of Wire Dipole Antennas

Publication Year: 2011, Page(s):350 - 356
Cited by:  Papers (1)
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The shape representation of planar wire dipole antennas of fixed radius is discussed. Away from the feed point the shape can be always represented as a arc-length parametrizable Lipschitz-continuously differentiable curve. The representation is applied to classical directivity optimization design problems as well as impedance optimization problems. By such an optimization, it is shown that directi... View full abstract»

• ### Inductively-Loaded Yagi-Uda Antenna With Cylindrical Cover for Size Reduction at VHF-UHF Bands

Publication Year: 2011, Page(s):357 - 362
Cited by:  Papers (10)
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A new technique is employed to reduce the size of Yagi-Uda antennas. The technique consists of adding short circuited cylindrical covers to the structure, making the elements be inductively loaded, and as a result, increase the electric length. A prototype resonating at 660 MHz is developed, and compared to a conventional Yagi-Uda antenna. An effective area reduction of 35% is achieved without dec... View full abstract»

• ### Compact Coplanar Waveguide (CPW)-Fed Zeroth-Order Resonant Antennas With Extended Bandwidth and High Efficiency on Vialess Single Layer

Publication Year: 2011, Page(s):363 - 372
Cited by:  Papers (76)
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This paper presents the design and analysis of compact coplanar waveguide (CPW)-fed zeroth-order resonant (ZOR) antennas. They are designed on a CPW single layer where vias are not required. The ZOR phenomenon is employed to reduce the antenna size. The novel composite right/left-handed (CRLH) unit cell on a vialess single layer simplifies the fabrication process. In addition, the CPW geometry pro... View full abstract»

• ### Increasing the Bandwidth of Microstrip Patch Antenna by Loading Compact Artificial Magneto-Dielectrics

Publication Year: 2011, Page(s):373 - 378
Cited by:  Papers (22)
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We realize artificial magneto-dielectric loading for microstrip patch antenna by etching embedded meander-line (EML) array in the ground plane under the patch. The related artificial magneto-dielectric medium belongs to the waveguided metamaterial proposed previously. Both simulation and measurement results show that the proposed patch antenna with the EML array has wider impedance bandwidth than ... View full abstract»

• ### A New Design Method for Single-Feed Circular Polarization Microstrip Antenna With an Arbitrary Impedance Matching Condition

Publication Year: 2011, Page(s):379 - 389
Cited by:  Papers (32)
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This paper introduces a new analytical method suitable for the design of the single-feed circular polarization (CP) microstrip patch antenna. Specifically, the proposed method imposes simultaneously the circular polarization condition as well as an arbitrary input impedance matching condition. The two conditions are enforced by an analytical method derived from an equivalent circuit model of a qua... View full abstract»

• ### Compact Band-Rejected Ultrawideband Slot Antennas Inserting With $lambda/2$ and $lambda/4$ Resonators

Publication Year: 2011, Page(s):390 - 397
Cited by:  Papers (33)
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Two compact ultrawideband (UWB) slot antennas with band-rejected characteristics are proposed for UWB communication applications. The entire size of both antennas is as small as 15 mm × 22 mm × 0.8 mm, which is smaller than most of the proposed UWB antennas. The radiator is a stepped slot excited by a 50 Ω feed line. By etching a half-wavelength and a quarter-wavelength slot f... View full abstract»

• ### Millimeter-Wave Microstrip Comb-Line Antenna Using Reflection-Canceling Slit Structure

Publication Year: 2011, Page(s):398 - 406
Cited by:  Papers (27)
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A microstrip comb-line antenna is developed in the millimeter-wave band. When the element spacing is one guide wavelength for the broadside beam in the traveling-wave excitation, reflections from all the radiating elements are synthesized in phase. Therefore, the return loss increases significantly. Furthermore, re-radiation from elements due to the reflection wave degrades the design accuracy for... View full abstract»

• ### Frequency Steerable Two Dimensional Focusing Using Rectilinear Leaky-Wave Lenses

Publication Year: 2011, Page(s):407 - 415
Cited by:  Papers (21)
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The concept of frequency steerable two-dimensional electromagnetic focusing by using a tapered leaky-wave line source embedded in a parallel-plate medium is presented. Accurate expressions for analyzing the focusing pattern of a rectilinear leaky-wave lens (LWL) from its constituent leaky-mode tapered propagation constant are described. The influence of the main LWL structural parameters on the sy... View full abstract»

• ### Sub-Wavelength Profile 2-D Leaky-Wave Antennas With Two Periodic Layers

Publication Year: 2011, Page(s):416 - 424
Cited by:  Papers (18)
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A fast and accurate analysis and synthesis technique for high-gain sub-wavelength 2-D Fabry-Perot leaky-wave antennas (LWA) consisting of two periodic metallodielectric arrays over a ground plane is presented. Full-wave method of moments (MoM) together with reciprocity is employed for the estimation of the near fields upon plane wave illumination and the extraction of the radiation patterns of the... View full abstract»

• ### Experimental Characterization of a Surfaguide Fed Plasma Antenna

Publication Year: 2011, Page(s):425 - 433
Cited by:  Papers (11)
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The possibility of using a surfaguide device as plasma source for plasma antenna application has been experimentally investigated. The surfaguide was optimized, realized and used for the ignition of a plasma column to be used as a radiating structure: the coupling with the radiated signal network and plasma antenna efficiency were measured showing that a surfaguide can be effectively used to creat... View full abstract»

• ### Experimental Study of the Effect of Modern Automotive Paints on Vehicular Antennas

Publication Year: 2011, Page(s):434 - 442
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Today's automobiles are fitted with antennas for many wireless services, with modern vehicular antennas frequently configured in blade or “shark-fin” housings, or as planar roof mounted antennas. In these configurations vehicle manufacturers may wish to improve the appearance of the finished vehicle by painting these antennas or their coverings. This paper provides experimental resul... View full abstract»

• ### A Toolset Independent Hybrid Method for Calculating Antenna Coupling

Publication Year: 2011, Page(s):443 - 451
Cited by:  Papers (5)
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Calculation of the electromagnetic interference (EMI) between electrically large antennas mounted on ships is important for a variety of Navy problems. This paper presents a toolset independent hybrid method for calculating the power at receive antenna terminals relative to the power incident on transmit antenna terminals. The hybrid method coupling results are validated against full-wave computat... View full abstract»

• ### Array Noise Matching—Generalization, Proof and Analogy to Power Matching

Publication Year: 2011, Page(s):452 - 459
Cited by:  Papers (4)
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In array antennas with residual coupling, the signal-to-noise ratio (SNR) can suffer from noise coupling from the inputs of the low noise amplifiers (LNAs) to the other channels. As shown recently, the lost SNR can be retrieved by changing the individual matching circuits. This paper explains the theory behind array noise matching and generalizes it for non-equal LNAs and non-reciprocal sources. I... View full abstract»

• ### Compact Two-Layer Rotman Lens-Fed Microstrip Antenna Array at 24 GHz

Publication Year: 2011, Page(s):460 - 466
Cited by:  Papers (25)
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This paper presents a new design to realize a compact Rotman lens-fed antenna array. The lens-fed antenna has the form of two layers, which is a new approach to reducing the size of the Rotman lens. The approach is demonstrated at 24 GHz aiming for an automotive sensing radar. The lens consists of a top metal layer, a dielectric, a common ground, a dielectric, and a bottom metal layer, in sequenti... View full abstract»

• ### Bayesian Compressive Sampling for Pattern Synthesis With Maximally Sparse Non-Uniform Linear Arrays

Publication Year: 2011, Page(s):467 - 481
Cited by:  Papers (108)
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A numerically-efficient technique based on the Bayesian compressive sampling (BCS) for the design of maximally-sparse linear arrays is introduced. The method is based on a probabilistic formulation of the array synthesis and it exploits a fast relevance vector machine (RVM) for the problem solution. The proposed approach allows the design of linear arrangements fitting desired power ... View full abstract»

• ### Synthesis of Multi-Beam Sub-Arrayed Antennas Through an Excitation Matching Strategy

Publication Year: 2011, Page(s):482 - 492
Cited by:  Papers (11)
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An innovative synthesis procedure to design sub-arrayed antennas affording multiple patterns is presented in this paper. The approach is based on an excitation matching procedure aimed at generating one optimal pattern and multiple compromises close as much as possible to user-defined reference beams. A suitable modification of the K-means clustering algorithm integrated into a customized version ... View full abstract»

• ### Investigations on the Efficiency of Array Fed Coherently Radiating Periodic Structure Beam Forming Networks

Publication Year: 2011, Page(s):493 - 502
Cited by:  Papers (11)
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The concept of coherently radiating periodic structure beam forming network (C-BFN) has been introduced recently in the literature as a possible mean to feed linear or planar arrays. Losses are expected in such a structure as it produces non-orthogonal excitation laws, motivating the investigations on C-BFN efficiency presented in this paper to guide antenna designers. Mono- and multi-beam applica... View full abstract»

• ### Design and Implementation of Two-Layer Compact Wideband Butler Matrices in SIW Technology for Ku-Band Applications

Publication Year: 2011, Page(s):503 - 512
Cited by:  Papers (26)
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The design and realization of a novel wideband two-layer 4 × 4 Butler matrix in substrate integrated waveguide (SIW) technology are addressed. The two-layer SIW design is exploited through a two-fold enhancement approach. The two-layer topology is first explored in a simple matrix layout with minimum number of components. A space saving design is then proposed making optimum use of the two-... View full abstract»

• ### A Self-Tuning Electromagnetic Shutter

Publication Year: 2011, Page(s):513 - 519
Cited by:  Papers (1)
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A self-tuning electromagnetic shutter is introduced, consisting of a slotted metallic surface with computer controlled switches placed across the slots. By opening and closing the switches, the transmissivity of the surface may be adjusted over a broad range of frequencies. In particular, the surface may be placed into open and closed states, creating an electronically-controllable shutter. The ab... View full abstract»

• ### Cross-Dipole Bandpass Frequency Selective Surface for Energy-Saving Glass Used in Buildings

Publication Year: 2011, Page(s):520 - 525
Cited by:  Papers (27)  |  Patents (2)
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Energy-saving glass is becoming very popular in building design due to their effective shielding of building interior against heat entering the building with infrared (IR) waves. This is obtained by depositing a thin layer of metallic-oxide on the glass surface using special sputtering processes. This layer attenuates IR waves and hence keeps buildings cooler in summer and warmer in winter. Howeve... View full abstract»

• ### Multiscale Compressed Block Decomposition for Fast Direct Solution of Method of Moments Linear System

Publication Year: 2011, Page(s):526 - 536
Cited by:  Papers (46)
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The multiscale compressed block decomposition algorithm (MS-CBD) is presented for highly accelerated direct (non iterative) solution of electromagnetic scattering and radiation problems with the method of moments (MoM). The algorithm is demonstrated to exhibit N2 computational complexity and storage requirements scaling with N1.5, for electrically large objects.... View full abstract»

• ### Electromagnetic Scattering From Electrically Large Arbitrarily-Shaped Conductors Using the Method of Moments and a New Null-Field Generation Technique

Publication Year: 2011, Page(s):537 - 545
Cited by:  Papers (9)
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In this work, a new numerical procedure is developed to apply the well-known method of moments (MoM) formulation to electrically large conducting bodies of arbitrary shape. The numerical procedure involves developing a combination of subdomain-entire domain basis functions which result in a sparse moment matrix as opposed to a full matrix in the traditional method. Moreover, the zeros in the MoM m... View full abstract»

• ### Calderon Preconditioned Surface Integral Equations for Composite Objects With Junctions

Publication Year: 2011, Page(s):546 - 554
Cited by:  Papers (8)
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A Calderon preconditioned (CP) surface integral equation method is developed for the analysis of scattering by piecewise homogeneous dielectric and composite metallic and dielectric objects. The method is based on the electric current formulation (ECF), which only uses the electric surface currents as unknowns. In the ECF the ill-conditioned electric field integral operator and the well-conditione... 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