A dual circularly polarized (CP) magnetoelectric dipole antenna is presented in this article. The dual-CP was devised to form a circular ring shape and fabricated using 3-D printing technology. To overcome the conflict between high (broadside) gain wide (half-power) beamwidth, new beamwidth broadening technique proposed. Twelve metacolumns were placed evenly along circumference close ring-shaped dipole. design approach elaborated, where number size of meta-columns decided according curves....

A dual-polarized (DP) antenna with a conical radiation pattern and high gain characteristics is proposed. It mainly comprised of horizontally polarized (HP) array, vertically (VP) element, fence, feeding network. In the HP direction, rotatable stacked substrate-integrated waveguide (SIW)-to-coaxial-to-SIW transition (SCST) meticulously designed to yield omnidirectional low variations transmission loss. As for VP two orthogonal substrates that are arranged above radiating element act as...

This article presents a new design of an endfire phased array antenna (PAA) using heterogeneous beam elements (HBEs) for wide-angle scanning. The HBEs are specially designed with inclined and controllable directions, which incorporate printed dipole rotary ground to achieve the desired inclination. Then, PAAs constructed based on proposed HBE, arrangement is realized by adjusting beam-inclined angle each element. As result, HBE effectively maintain stable effective aperture across various...

This communication presents a novel vertical polarized (VP) endfire phased array antenna (PAA) using heterogeneous beam elements (HBEs) for wide-angle scanning, where the HBE is specially designed element with an inclined beam. First, proposed low-profile and wideband VP achieved by implementing open-end cavity radiator three slots. Additionally, tilting aperture of to realize gradient phase distribution, obtained, which then used form PAA. The desired layout adjusting angles individual...

In this paper, a novel omni-directional antenna with wideband and low cross-polarization for GSM1800/3G/LTE/5G indoor communication systems is proposed. By using the printed log-periodical elements, which are evenly arranged around center, proposed achieves omnidirectional radiation patterns. Moreover, cooperation of annular parasitic patches, wide bandwidth good performance achieved simultaneously. Simulated results indicate that an impedance 1.7-3.8 GHz (76.4%) can be gain approximately...

This communication introduces an innovative distributed integrated antenna (DIA) architecture for millimeter-wave (mmWave) mobile terminals. The DIA discretizes the into multiple components: basic structures and auxiliary structures, which are located on different parts of terminals, including chip, package, PCB, shell. Meanwhile, signal pathway between these components is achieved by antenna's internal electromagnetic coupling rather than a conductive connection, leading to lower radiation...

This paper proposes a new wideband aperture-shared dual-polarized end-fire antenna for millimeter-wave (mmWave) applications. Firstly, reshaped quasi-PIFA element with L-probe feeding is adopted to produce single vertical polarization (VP) radiation. A pair of dual-layer patches are then loaded in front the element, which serves as both resonator and director towards simultaneous impedance bandwidth gain improvement. U-slot further introduced broaden bandwidth. results low profile, wideband,...

A phased array antenna (PAA) incorporating a dielectric dome lens (DL) extends its scanning range but concurrently experiences notable reduction in broadside gain due to the inherent diverging characteristics near broadside. Instead of using whole DL, this paper proposes top-truncated (TTDL) address issue. The approach mitigates by eliminating DL's through truncation upper portion. study elucidates design fundamentals for TTDL, encompassing an analysis impact and corresponding phase...

In this paper, a three-dimensional (3D) printed low-profile wideband antenna for the fifth generation (5G) indoor communications is proposed. To obtain compact size and wide-beamwidth characteristics, 3D folded annular electrical dipole designed. Furthermore, pair of orthogonal -shape strips excited by 90°-phase difference are arranged in gaps vertical plates to acquire dual-circular polarization (CP) feature. The feeding network that composed modified 3dB-hybrid coupler below ground provide...

A novel magneto-electric (ME) dipole antenna is presented in this paper, which owns the characteristics of low cross polarization level and high front-to-back ratio (FBR) for 5th-generation (5G) indoor communications described. By dividing conventional patches into two pairs rectangle four pieces parasitic patches, current produces cross-polarization can be offset. Furthermore, vertical fence effectively widen beamwidth antenna. Experiment results demonstrate that a broad frequency bandwidth...

The objective of this research was to investigate the moisture susceptibility WMA after various aging time using surface free energy (SFE) method. experiment design included use one binder and aggregate source, two warm-mix additives (Sasobit Evotherm) four different rolling thin film oven (RTFO) times (0, 3, 5, 7 hours). sessile drop method used in study measure contact angle between asphalt binders three probe liquids. From these measurements, SFE components were determined Owens-Wendt...

This paper presents the results of mutual coupling study into Chinese-character-shaped patch antennas. A number two-element arrays composed side-by-side identical and non-identical circularly polarized (CP) antenna elements are investigated. Our reveal that Guo-Meng array nonidentical exhibit better reduction with less fluctuation versus frequency as compared Guo-Guo Meng-Guo scenarios. new technique is also introduced here to suppress below -20 dB at, beyond, separation 0.75 wavelengths at 2.5 GHz.