Biometric systems such as signature verification are highly viable in order to identify individuals organizations or finance divisions. Advancement classification of images using deep learning networks has opened an opportunity for this problem. In study, the largest available handwritten dataset, namely, GPDS Synthetic Signature Database, was employed signatures 1000 users, each which having 24 original (or genuine) signatures, and 30 forged fake) signatures. Moreover, two popular GoogLeNet...

Communication technology is increasingly pervading everyday life. The rapid progress in wireless communication besides the increasing interest wearable antennas and electronics civil, medical, sport wear military domains promises to replace wired- networks near future which are more important role. Recently, there has been growing antenna community merge between systems technology, Ultra-Wideband (UWB) textile technology. All these together have resulted demand for ∞exible fabric antennas,...

With the emergence of Internet-of-Things (IoT) technologies, application Wireless Sensor Network (WSN) has become pervasive in our physical environment. These technologies rely on WSN to capture environmental data and transmit it through network specified location or storage. Given massive that captured by transmission happen process, there is a challenge for any developers researchers terms continuous operation device. This because WSNs are battery-powered often deployed remote hard access...

Artificial Magnetic Conductor (AMC) is a type of implemented metamaterial in several antennae and microwave design applications. By utilizing the unique characteristics metamaterials which do not exist naturally, performance various devices can be enhanced. This article elaborates on technical perspective recent works AMC for antenna The discusses theoretical aspects, simulation procedures, measurement setup used to characterize unit cell. Subsequently, that involve incorporation are...

The rate of annual road accidents attributed to drowsy driving are significantly high. Due this, researchers have proposed several methods aimed at detecting drivers’ drowsiness. These include subjective, physiological, behavioral, vehicle-based, and hybrid methods. However, recent reports on safety still indicating as a major cause accidents. This is plausible because the current driver drowsiness detection (DDD) solutions either intrusive or expensive, thus hindering their ubiquitous...

A multiband Fractal Koch dipole textile antenna is proposed for wearable applications.The designed to operate at 0.9 GHz, 2.45 GHz and 5.8 GHz.Denim materials as the substrate are selected aiming obtain robustness, flexibility a lightweight antenna.The model designed, simulated, optimized analyzed using Microwave Studio CST software.Two types of prototypes fabricated evaluated with different conducting elements (Shield It fabric copper foil tape).Antenna performance observed in terms return...

The incoming 5G technology requires antennas with a greater capacity, wider wireless spectrum utilisation, high gain, and steer-ability. This is due to the cramped utilisation in previous generation. As matter of fact, conventional are unable serve new frequency limitations fabrication installation mainly for smaller sizes. use graphene material promises sizes thinner dimensions, yet capable emitting higher frequencies. Hence, were studied at 15 GHz both single array elements. high-frequency...

A frequency reconfigurable antenna with a simple design structure and biasing circuit is presented. The able to configure its frequencies operate either in multiband or wideband modes. fed by coplanar waveguide transmission line. reconfiguration characteristics of the achieved using PIN diode switches. operating mode are designed within range, from 2 6 GHz. Both simulated measured results S11, radiation pattern realized gains verified. allows degree freedom providing vice versa.

Abstract A flexible meander bowtie antenna incorporated with dipole‐like artificial magnetic conductor (AMC) is proposed. Two different types of AMC design are presented for comparison. new medical transdermal patch used as the dielectric substrate both and AMC. The gain enhancement achieved using a modified unit cell effect thickness separation distance between investigated. results show that operating at its original frequency (as in free space) when antenna‐AMC more than one‐eighth...

Platforms with low radar signatures require compatible antennas (low scattering) for communication purposes. Under this context, the article presents two Fabry-Perot (FP) Cavity (Ant-1 and Ant-2). Ant-1's aperture is an integrated design of artificial magnetic conductor (AMC) surface a phase gradient metasurface (PGM), incorporating three unit-cell structures. The antenna achieves reduced monostatic scattering over broad bandwidth, simultaneously obtains high gain as well tilted beam peak...

Meander Line Antenna (MLA) is widely employed in compact electronic devices, such as cellular phones and WLAN terminals, owing to its electrically small size. To facilitate practical antenna design, essential equations encompassing self-resonant structure, input resistance, efficiency, Q factor have been systematically developed. However, the prior included only inductive reactance (XC), neglecting capacitive (XD) equation. This manuscript addresses this gap by introducing new design...

Multibeam base station antennas are introduced for 5G and 6G mobile communication systems. Considering higher frequency bands such as millimeter waves terahertz 6G, dielectric lens become promising candidates due to their simple antenna configuration excellent multibeam radiation characteristics. Therefore, it is important identify the best from existing typical antennas. In this article, a shaped some conventional lenses considered. For types, hyperbolic-planar, plano-convex,...

In radio wave hyperthermia therapy, array antenna configuration was mainly studied to generate a small spot at the diseased part. Array antennas have flexibility in controlling radiation performance, such as positions, by using their numerous radiating elements. However, is achieved expense of structure complexity. On other hand, lens can concentrate waves into forming shape. The simplicity lends itself easy handling practical application. Moreover, frequency independence allows for more...

Recently, helical antennas had been used as a very small implantable antenna in capsule endoscopy system. For antenna, normal-mode (NMHA) is promising because of its size and the completeness an design method, which has already established. However, human body, effects tissues on electrical characteristics NMHA were not clarified. The most important aspect to determine self-resonant structures. In this letter, deterministic equation derived for structures body. By utilizing simulation...

In recent years, the development of healthcare monitoring devices requires high performance and compact in-body sensor antennas. A normal-mode helical antenna (NMHA) is one most suitable candidates that meets criteria, especially with ability to achieve efficiency when structure in self-resonant mode. It was reported placed a human body, decreased due increase its input resistance (Rin). However, reason for Rin not clarified. this paper, ensured through experiments physical reasons are...

Internet of things (IoT) is not a single word, but it has gathered billions devices in the same lane. The given lives things. Machines have sense now like human. It works remotely as program been settled inside chip. system become so smart and reliable. brought out changes most sectors humankind. Meanwhile, agriculture main strength country. more production agricultural products increased, world will be completeness from food shortage. can increased when IoT entirely implemented sector. Most...

A novel of wideband circular polarization (CP) antenna with high gain that is suitable to harvest energy proposed. In this article, our objective design an capable fully harvesting ambient RF energy. survey on the feasibility scavenging for was conducted through power density measurement in urban area. Using results, a CP designed cover frequency band from largest contributors, ranging 1.73 2.61 GHz GSM1800, UMTS, WiMAX and unlicensed industrial, scientific, medical (ISM) bands. Hence,...

This paper proposes a flexible compact bowtie antenna for medical application that operates at 2.45 GHz. The proposed antennas are miniaturized using meander technique. Both substrates and conducting material of the made semi-transparent film as substrate shieldit fabric which suitable wearable on body application. results show total length is significantly reduced by up to 38%. However, gain slightly decreased when size become smaller. this research could provide guidance has significant...