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# IEEE Transactions on Antennas and Propagation

## Filter Results

Displaying Results 1 - 25 of 67

Publication Year: 2013, Page(s):C1 - 2362
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• ### IEEE Transactions on Antennas and Propagation publication information

Publication Year: 2013, Page(s): C2
| PDF (138 KB)
• ### A Broadband Omnidirectional Circularly Polarized Antenna

Publication Year: 2013, Page(s):2363 - 2370
Cited by:  Papers (34)
| | PDF (1817 KB) | HTML

A broadband circularly polarized (CP) antenna is developed with an omnidirectional radiation pattern in the horizontal plane. Four broadband CP rectangular loop elements are employed for broadband omnidirectional CP radiation. The four rectangular loop elements are first printed on a flexible thin dielectric substrate and then rolled into a hollow cylinder. A conducting cylinder is introduced insi... View full abstract»

• ### Manipulation of the Radiation Characteristics of a Patch Antenna by Small Ferrite Disks Inserted in Its Cavity Domain

Publication Year: 2013, Page(s):2371 - 2379
Cited by:  Papers (2)
| | PDF (3238 KB) | HTML

In this paper, it is shown how the radiation characteristics of a patch antenna can be manipulated by a small number of normally magnetized ferrite disks inserted in the resonant region of the patch. It is shown that a one- and dual-band circular polarized microstrip antenna can be obtained by taking advantage of the interaction of the antenna cavity field with the magnetized ferrite disks. The sc... View full abstract»

• ### Implantable High-Gain Dental Antennas for Minimally Invasive Biomedical Devices

Publication Year: 2013, Page(s):2380 - 2387
Cited by:  Papers (5)
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This paper proposes a novel antenna for dental implants. The proposed antenna can be attached to minimally invasive biomedical devices to monitor health conditions. Based on a combination of Archimedean spirals and a Hilbert-based curve, this 3D folded antenna was embedded on a ceramic denture (ZrO2), and operates within the medical radio (MedRadio) band. An omnidirectional radiation pa... View full abstract»

• ### Wideband, Electrically Small, Planar, Coupled Subwavelength Resonator Antenna With an Embedded Matching Network

Publication Year: 2013, Page(s):2388 - 2396
Cited by:  Papers (4)
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A wideband, electrically small, planar, coupled D-ring subwavelength resonator antenna is presented. Two planar coupled D-ring resonators operating at even mode have been demonstrated experimentally to have a strong coupling to radiation. In this paper, we investigate a novel feeding method of driving the planar coupled D-rings to achieve a wide bandwidth. Dual-mode radiation is observed in the an... View full abstract»

• ### Theory and Experiment of Spherical Aperture-Coupled Antennas

Publication Year: 2013, Page(s):2397 - 2403
Cited by:  Papers (4)
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Rigorous mathematical method of moments (MoM) for analyzing spherical microstrip aperture-coupled antennas is presented in this paper by using dyadic Green's functions (DGF) in conjunction with magnetic field integral equation (MFIE) and electric field integral equation (EFIE) formulations. With the aid of linear Rao-Wilton-Glisson (RWG) triangular basis functions, spherical three-layer aperture-c... View full abstract»

• ### A Geometrically-Appropriate Cavity Model for a Spherical Inverted-F Antenna (SIFA)

Publication Year: 2013, Page(s):2404 - 2410
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A cavity model for a spherical inverted-F antenna (SIFA) is proposed using a custom curvilinear coordinate system. The coordinate transformation maps the spherical structure into an equivalent rectangular topology to which conventional cavity method procedures can be applied. The wave equation under this transformation is solved to predict the modal characteristics, input impedance, and radiation ... View full abstract»

• ### A Method for Determining Optimal EBG Reflection Phase for Low Profile Dipole Antennas

Publication Year: 2013, Page(s):2411 - 2417
Cited by:  Papers (9)
| | PDF (1537 KB) | HTML

An analytical method for determining the optimal reflection phase of an electromagnetic band gap (EBG) ground plane to match a low profile dipole antenna is introduced. Image theory is used to incorporate the near field coupling between a dipole antenna and the ground plane. The main contribution of this paper is to show that the optimal EBG reflection phase can be determined at discrete frequenci... View full abstract»

• ### A Wideband MNG-TL Dipole Antenna With Stable Radiation Patterns

Publication Year: 2013, Page(s):2418 - 2424
Cited by:  Papers (10)
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This paper presents the successful design and physical realization of a wideband MNG-TL dipole antenna. An artificial mu-negative transmission line (MNG-TL) structure is realized by employing periodically loaded parallel-plate lines. It is known that the current reversal, which occurs at frequencies much beyond the dipole natural frequency, disturbs the omnidirectional radiation pattern in the azi... View full abstract»

• ### Circular Aperture Slot Antenna With Common-Mode Rejection Filter Based on Defected Ground Structures for Broad Band

Publication Year: 2013, Page(s):2425 - 2431
Cited by:  Papers (7)
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A novel system composed of a circular aperture slot antenna and a Common-Mode (CM) noise rejection filter is presented. This antenna is differentially fed by microstrip coupled transmission lines. In order to eliminate CM noise, a notch filter based on three non-periodical defected ground structures (DGS) was implemented. The whole system achieves a fractional impedance bandwidth of about 127%. Ra... View full abstract»

• ### Beam Scanning Leaky-Wave Slot Antenna Using Balanced CRLH Waveguide Operating Above the Cutoff Frequency

Publication Year: 2013, Page(s):2432 - 2440
Cited by:  Papers (9)
| | PDF (1508 KB) | HTML

In this paper, a composite right-left-handed (CRLH) rectangular waveguide satisfying a balanced condition above the cutoff frequency and a beam scanning leaky-wave slot antenna are presented. The proposed metamaterial waveguide consists of one shorted stub and two H-plane irises, which produce a negative permittivity and negative permeability, respectively. To design a balanced CRLH transmission l... View full abstract»

• ### Measured Thermal Dynamics of the Haystack Radome and HUSIR Antenna

Publication Year: 2013, Page(s):2441 - 2448
Cited by:  Papers (2)
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In 2010 the Haystack 37 meter reflector was replaced with a new antenna. This work presents measurements of the spatial and temporal thermal behavior of the antenna and its radome under diurnal and seasonal forcing. Values for thermal capacity and resistance of the antenna structure and radome are derived. The convective heat transfer coefficient acting on the aluminum antenna backstructure is fou... View full abstract»

• ### Reflection of ${rm TE}_{0{n}}$ Modes at Open-Ended Oversized Circular Waveguide

Publication Year: 2013, Page(s):2449 - 2456
Cited by:  Papers (1)
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Reflection of circular symmetric TE0n modes ( n= 1-6) at an oversized, open-ended circular waveguide (C76-waveguide, inner diameter=27.79 mm, 70 GHz) radiating into free space has been investigated theoretically employing two scattering matrix codes (SMCs), the finite-difference time-domain code EMPIRE and the uniform geometrical theory of diffraction (UTD) as well as the ... View full abstract»

• ### Prediction of Aperture Efficiency Ripple in Clear Aperture Offset Gregorian Antennas

Publication Year: 2013, Page(s):2457 - 2465
Cited by:  Papers (1)
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Electrically small clear aperture dual offset reflector systems often exhibit a directivity ripple over frequency due to the interference of the diffracted field from the sub-reflector with the main beam field. This paper investigates the cause of the ripple, and presents a technique to predict the expected system directivity, including the ripple, using the feed radiation pattern augmented by an ... View full abstract»

• ### Accurate Beam Prediction Through Characteristic Basis Function Patterns for the MeerKAT/SKA Radio Telescope Antenna

Publication Year: 2013, Page(s):2466 - 2473
Cited by:  Papers (11)
| | PDF (1820 KB) | HTML

A novel beam expansion method is presented that requires employing only a few Characteristic Basis Function Patterns (CBFPs) for the accurate prediction of antenna beam patterns. The method is applied to a proposed design of the MeerKAT/SKA radio telescope, whose antenna geometry is subject to small deformations caused by mechanical or gravitational forces. The resulting deformed pattern, which is... View full abstract»

• ### Compact Range Performance Evaluation Using Aperture Near-Field Angular Spectrums

Publication Year: 2013, Page(s):2474 - 2481
Cited by:  Papers (1)
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For a compact range (CR), the near-field angular spectrum can be obtained by making an inverse Fourier transform of its aperture spatial near field. The characteristics of the aperture design have been carried by the aperture near-field angular spectrum. The direct wave and edge-diffracted waves from the aperture can be separated and distinguished clearly in the angular domain. Therefore, the CR p... View full abstract»

• ### Rhombic Grid Array Antenna

Publication Year: 2013, Page(s):2482 - 2489
Cited by:  Papers (8)
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A rhombic grid array antenna (RGAA) is proposed and its frequency-scanning performance is discussed. The RGAA has numerous bent radiation elements, forming rhombic cells and loops. As the frequency is increased, the radiation beam from the RGAA becomes a forward-fire beam. It is found that, as the bend angle of the radiation elements is decreased, the useful antenna characteristics shift to a lowe... View full abstract»

• ### Maximum Efficiency Beam Synthesis of Radiating Planar Arrays for Wireless Power Transmission

Publication Year: 2013, Page(s):2490 - 2499
Cited by:  Papers (29)
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The synthesis of radiating planar arrays for wireless power transmission (WPT) is discussed. The objective is the maximization of the ratio between the power radiated on a target area and the total transmitted power. The optimal tapering is analytically found as the solution of a generalized eigenvalue problem whose descriptive matrices are either computed in closed-form or obtained through numeri... View full abstract»

• ### Biomimetic Antenna Arrays Based on the Directional Hearing Mechanism of the Parasitoid Fly Ormia Ochracea

Publication Year: 2013, Page(s):2500 - 2510
Cited by:  Papers (10)
| | PDF (1886 KB) | HTML

We present a thorough examination of two-element antenna arrays that mimic the sense of directional hearing of the parasitoid fly Ormia Ochracea and examine the design tradeoffs of such arrays. Recently, it was demonstrated that these antenna arrays demonstrate enhanced sensitivity to the direction of incidence of an electromagnetic wave, compared to regular arrays occupying the same aperture. Thi... View full abstract»

• ### Matching Bandwidth Limits for Arrays Backed by a Conducting Ground Plane

Publication Year: 2013, Page(s):2511 - 2518
Cited by:  Papers (15)
| | PDF (1312 KB) | HTML

Matching bandwidth limits are developed for antenna arrays backed by a perfect electrically conducting (PEC) ground plane. We model a general array in the long wavelength limit as a thin PEC-backed slab and use Fano's method to determine a limit for the frequency integral of the reflection coefficient. This yields a simple expression for the maximum bandwidth of the array under TE or TM excitation... View full abstract»

• ### Analytic Analysis of Transient Radiation From Phased Array Antennas in the Near- and Far-Field Focus Applications

Publication Year: 2013, Page(s):2519 - 2531
Cited by:  Papers (7)
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This paper presents an analytical transient analysis of electromagnetic field radiation from a time-delayed and finite periodic array of antennas for the near- and far-field focused applications. The elemental current moments of array are assumed with a transient impulse input for the excitations whose signals are delayed to radiate near-zone focused fields. The transient field phenomena for each ... View full abstract»

• ### A Novel Compact Printed Rectenna for Data Communication Systems

Publication Year: 2013, Page(s):2532 - 2539
Cited by:  Papers (29)
| | PDF (1691 KB) | HTML

A novel design of a two-port printed microstrip rectenna with compact structure for communication systems is presented. An aperture-coupled dual polarization patch antenna is utilized as the receiving antenna. The vertical feed port receives the microwave energy and transfers it to the rectifying circuit for dc power generation, while the horizontal feed port is used for data communication, with h... View full abstract»

• ### The LWA1 Radio Telescope

Publication Year: 2013, Page(s):2540 - 2549
Cited by:  Papers (46)
| | PDF (1467 KB) | HTML

LWA1 is a new radio telescope operating in the frequency range 10-88 MHz, located in central New Mexico. The telescope consists of 258 pairs of dipole-type antennas whose outputs are individually digitized and formed into beams. Simultaneously, signals from all dipoles can be recorded using one of the instrument's “all dipoles” modes, facilitating all-sky imaging. Notable features of... View full abstract»

• ### Dual-Polarized Volumetric Transmission-Line Metamaterials

Publication Year: 2013, Page(s):2550 - 2560
Cited by:  Papers (2)
| | PDF (1305 KB) | HTML

Most metamaterial unit cells are designed for a single polarization only. Those that do work for multiple polarizations are often difficult to fabricate as they require a three-dimensional arrangement of circuit boards. To get around this trade-off a new volumetric transmission-line metamaterial unit cell is introduced which supports two polarizations. The two-dimensional transmission-line network... 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