Special Notice
IEEE Xplore is transitioning to HTTPS on 9 April 2018. Customer access via EZproxy will require version 6 or higher with TLS 1.1 or 1.2 enabled.
Review our EZproxy Upgrade Checklist to ensure uninterrupted access.

# IEEE Transactions on Antennas and Propagation

## Issue 3 • March 2018

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options for this item are unavailable. Select items are only available as part of a subscription package. You may try again later or contact us for more information.

## Filter Results

Displaying Results 1 - 25 of 73

Publication Year: 2018, Page(s):C1 - 1055
| PDF (229 KB)
• ### IEEE Transactions on Antennas and Propagation

Publication Year: 2018, Page(s): C2
| PDF (83 KB)
• ### Wideband Reflector-Backed Folded Bowtie Antenna for Ground Penetrating Radar

Publication Year: 2018, Page(s):1056 - 1063
| | PDF (2811 KB)

A loaded ultrawideband unidirectional folded triangular bowtie antenna is proposed for ground penetrating radar (GPR) applications covering the (0.5–3 GHz) frequency range. The behavior of the proposed structure has been modeled and optimized using full-wave numerical simulations and measurements, in far-field and near-field settings in both time and frequency domains in free space and sand... View full abstract»

• ### Bandwidth Enhancement of Low-Profile Microstrip Antenna for MIMO Applications

Publication Year: 2018, Page(s):1064 - 1075
| | PDF (7400 KB)

This paper includes a design of a four-port stacked patch antenna with band enhancement for multi-in multi-out application. The proposed stacked patch antenna consists of two collocated microstrip patches printed on the upper and lower substrates. Through the analysis of characteristic modes, we find that eight desired modes forced to resonant at the operating band. By exciting the resonant modes ... View full abstract»

• ### Systematic Design of a Multiport MIMO Antenna With Bilateral Symmetry Based on Characteristic Mode Analysis

Publication Year: 2018, Page(s):1076 - 1085
| | PDF (3769 KB)

There are various bilaterally symmetric structures in the world. Characteristic mode analysis (CMA) enables to use a conductor with the symmetric structure itself as an antenna. Based on CMA, it is possible to implement a multiport MIMO antenna on the conductor using a mode-decoupling network (MDN). As the number of antennas increases, however, the complexity of the MDN becomes large, making desig... View full abstract»

• ### Low-Profile EndFire Leaky-Wave Antenna With Air Media

Publication Year: 2018, Page(s):1086 - 1092
| | PDF (2608 KB)

A low-profile endfire leaky-wave antenna is proposed in this paper. The proposed low profile antenna utilizes microstrip line to excite planar inverted-L antenna (PILA) elements. Air media is utilized in the proposed array to realize the endfire property. By using air media, the proposed leaky-wave array maintains phase constant slightly larger than the wavenumber in free space and achieves endfir... View full abstract»

• ### Self-Curing Decoupling Technique for Two Inverted-F Antennas With Capacitive Loads

Publication Year: 2018, Page(s):1093 - 1101
| | PDF (2735 KB)

A new concept named the self-curing decoupling technique is proposed for the first time to reduce the mutual coupling between two closely located inverted-F antennas (IFAs). The decoupling technique only requires a capacitive load on the shorting arm of each coupled IFA without connecting a circuitry or inserting a physical structure between the two coupled antennas. The capacitive load occupies v... View full abstract»

• ### Efficient Excitation of Characteristic Modes for Radiation Pattern Control by Using a Novel Balanced Inductive Coupling Element

Publication Year: 2018, Page(s):1102 - 1113
| | PDF (3055 KB)

A design strategy exploiting the characteristic mode (CM) analysis (CMA) is described for improving the radiation efficiency of a mounted-on-platform radiator. To this aim, a novel balanced inductive exciter (BIE) is introduced to improve the modal excitation purity of some CMs. In fact, even if the optimal position of the exciters on the hosting platform is determined by using the CM theory, the ... View full abstract»

• ### Matched, Low-Loss, and Wideband Graded-Index Flat Lenses for Millimeter-Wave Applications

Publication Year: 2018, Page(s):1114 - 1123
| | PDF (3811 KB)

Low reflection, low-loss, and wideband graded-index (GRIN) flat artificial dielectric lenses utilizing GRIN antireflection (AR) layers are developed in this paper. The GRIN lens and the AR layers are realized by perforating regular microwave substrates. The resulting reflectance, transmittance, and dielectric losses of the designed lens are 0.06% (−32.2 dB), 96.7% (−0.1... View full abstract»

• ### Low-Profile Planar Filtering Dipole Antenna With Omnidirectional Radiation Pattern

Publication Year: 2018, Page(s):1124 - 1132
| | PDF (2323 KB)

This paper presents a low-profile planar dipole antenna with omnidirectional radiation pattern and filtering response. The proposed antenna consists of a microstrip-to-slotline transition structure as the feeding network and a planar dipole as the radiator. Filtering response is obtained by adding nonradiative elements, including a coupled U-shaped microstrip line and two I-shaped slots, to the fe... View full abstract»

• ### Design and Experiments of Bandwidth-Controllable Broadband Monopole Antennas With Conformal Anisotropic Impedance Surface Coatings

Publication Year: 2018, Page(s):1133 - 1142
| | PDF (3836 KB)

In this paper, we report an ultrathin and lightweight coating approach for enhancing the impedance bandwidth of a conventional monopole antenna by using a single-layer dispersive anisotropic impedance surface (AIS). The design is facilitated by a rigorous and efficient modal-expansion analysis of a monopole coated by a homogeneous AIS, which is developed by approximating the AIS as a slab of aniso... View full abstract»

• ### Microstrip Magnetic Monopole and Dipole Antennas With High Directivity and a Horizontally Polarized Omnidirectional Pattern

Publication Year: 2018, Page(s):1143 - 1152
| | PDF (3374 KB)

Novel microstrip magnetic monopole and dipole antennas are proposed to achieve a high directivity along the elevation plane as well as a horizontally polarized omnidirectional pattern in the azimuth plane. The directivity of this microstrip magnetic monopole antenna is calculated by numerical integration; the results show that the directivity increases with the antenna length when the antenna reso... View full abstract»

• ### Experimental Validation of a Ku-Band Dual-Circularly Polarized Metasurface Antenna

Publication Year: 2018, Page(s):1153 - 1159
| | PDF (2950 KB)

The experimental validation of a Ku-band dual-circularly polarized (CP) broadside-beam metasurface (MTS) antenna is presented. A radially modulated anisotropic single-layer MTS has been synthesised employing subwavelength elliptical slotted metallic patches printed on top of a thin Arlon grounded substrate. In the structure, two decoupled phase-matched transverse magnetic and transverse electric s... View full abstract»

• ### Orthomode Transducers With Folded Double-Symmetry Junctions for Broadband and Compact Antenna Feeds

Publication Year: 2018, Page(s):1160 - 1168
| | PDF (3159 KB)

Orthomode transducers (OMTs) using folded six-port waveguide junctions are presented for obtaining the maximum compactness in antenna feeds with very wide performance. The proposed junctions are based on the well-known turnstile and Bøifot configurations, having two symmetry planes for keeping the isolation between orthogonal polarizations and the control of higher order modes. The folded a... View full abstract»

• ### Systematic Design of THz Leaky-Wave Antennas Based on Homogenized Metasurfaces

Publication Year: 2018, Page(s):1169 - 1178
| | PDF (2358 KB)

In this paper, a systematic design of Fabry–Perot cavity antennas based on leaky waves is proposed in the THz range. The use of different topologies for the synthesis of homogenized metasurfaces shows that a specific fishnetlike unit cell is particularly suitable for the design of efficient THz radiating devices. Accurate full-wave simulations highlight the advantages and disadvantages of t... View full abstract»

• ### Wideband Low-Profile SIW Cavity-Backed Circularly Polarized Antenna With High-Gain and Conical-Beam Radiation

Publication Year: 2018, Page(s):1179 - 1188
| | PDF (3160 KB)

A low-profile substrate-integrated waveguide (SIW) cavity-based antenna with conical-beam circularly polarized (CP) radiation is presented. Conical-beam CP radiation is obtained by the combination of a radial current source and a loop current source, which are produced by a shorted monopole patch and an annular array, respectively. The proposed annular array configuration is designed by combining ... View full abstract»

• ### Omnidirectional Dielectric Resonator Antenna With a Planar Feed for Circular Polarization Diversity Design

Publication Year: 2018, Page(s):1189 - 1197
| | PDF (2907 KB)

The cylindrical dielectric resonator (DR) antenna (DRA) is excited in its omnidirectional TM $_{01delta }$ mode by a planar shorted microstrip cross. With this nonintrusive feed, the DRA can be fabricated without the need of drilling a hole in the DR as required in the probe feed method. This DRA is applied to the first omnidi... View full abstract»

• ### Fast Pattern Calculation of Rib Reflectors With Varying Surface Distortions

Publication Year: 2018, Page(s):1198 - 1207
| | PDF (1923 KB)

An investigation on fast pattern calculation of rib reflectors is presented in this paper with varying surface distortions. In the beginning, a combined finite element meshing procedure is proposed by best-fit paraboloid and weighting feed primary pattern. An approximation formula for fast pattern calculation is derived on the basis of rib surface with a refocused feed and authors’ previous... View full abstract»

• ### A Compact and High-Gain Cavity-Backed Waveguide Aperture Antenna in the C-Band for High-Power Applications

Publication Year: 2018, Page(s):1208 - 1216
| | PDF (2711 KB)

In this paper, the design of an ultracompact cavity-backed waveguide aperture antenna operating at C-band with 14% fractional bandwidth at 5.8 GHz is discussed. The measured results demonstrated a 96% antenna efficiency, greater than 78% aperture efficiency, 18 dB return loss, and 15 dBi gain with 0.6 dB flatness over the entire desired bandwidth (5.4–6.2 GHz). Measurem... View full abstract»

• ### Parallel Dual-Loop Antenna for WWAN/LTE Metal-Rimmed Smartphone

Publication Year: 2018, Page(s):1217 - 1226
| | PDF (3936 KB)

A simple internal antenna design for wireless wide-area network/long-term evolution (LTE) operations is investigated, and it can be incorporated into a mobile phone that has an unbroken metal rim of height 5 mm. The proposed antenna is mainly composed of two parallel slots (dual loop) embedded on the system ground, and by feeding them with an L-shaped coupled feedline with matching networks, good ... View full abstract»

• ### Optimized Corrugated Tapered Slot Antenna for mm-Wave Applications

Publication Year: 2018, Page(s):1227 - 1235
| | PDF (6115 KB)

We present a novel approach to design a high-performance tapered slot antenna (TSA) at millimeter-wave frequencies. Commonly, TSAs are designed using profiles expressed as simple functions (linear, exponential, Fermi, or constant width). Some improvement can be achieved by the use of corrugations of fixed dimensions. This usual approach, however, gives little room for improvement in their performa... View full abstract»

• ### Phase-Delay Versus Phase-Rotation Cells for Circular Polarization Transmit Arrays—Application to Satellite Ka-Band Beam Steering

Publication Year: 2018, Page(s):1236 - 1247
| | PDF (3247 KB)

Planar transmit arrays (TAs) have been an attractive solution as gain enhancers for various applications, e.g., satellite communications. The TA performance directly depends on its composing unit-cell characteristics. Planar unit cells can be categorized into two main types: phase-rotation (PR) and phase-delay (PD) cells. There is no hint in the literature about the relative merits of these two ty... View full abstract»

• ### An Electronically Tunable Biomimetic Antenna Array

Publication Year: 2018, Page(s):1248 - 1257
| | PDF (3117 KB)

A two-element tunable biomimetic antenna array (BMAA) that uses a single varactor to achieve tunability over a relatively wideband is presented. The proposed device consists of two closely spaced quarter-wavelength monopole antennas operating at 600 MHz. The antennas are spaced at a distance of 2.5 cm and are coupled together using a tunable external coupling network (ECN). The ECN is designed to ... View full abstract»

• ### Fast and Accurate Modeling of Dual-Polarized Reflectarray Unit Cells Using Support Vector Machines

Publication Year: 2018, Page(s):1258 - 1270
| | PDF (2705 KB)

This paper describes the characterization of reflectarray unit cells using support vector machines (SVMs) to obtain fast and accurately the full matrix of reflection coefficients, which is used for an analysis of dual-polarized reflectarrays, demonstrating the performance of the model. First, a surrogate model of the reflectarray unit cell is obtained using SVMs. To this end, a set of random sampl... View full abstract»

• ### Compensation for Waveguide Losses in the Design of Slot Arrays

Publication Year: 2018, Page(s):1271 - 1279
| | PDF (1310 KB)

There is a growing tendency to construct slotted waveguide arrays using lightweight, nonmetallic materials. For high-frequency applications, small dimensions make the implementation of slot arrays in substrate-integrated waveguide with etched slots a viable option. In both these cases, the waveguides exhibit inherent losses. If these losses are not compensated for, some slots will be underillumina... 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