This paper presents a wideband and high-gain rectangular microstrip array antenna with new frequency-selective surface (FSS) designed as reflector for the sub-6 5G applications. The proposed is to meet US Federal Communications Commission (FCC) standard in mid-band (3.5-5 GHz) configuration consists of 1 × 4 an FSS produce semi-stable high radiation gain. modeled delivered wide stopband transmission coefficient from 3.3 5.6 GHz promised linearly declining phase over frequencies. An...

Millimeter wave technology will be dominating the fifth-generation networks due to clear advantage of higher frequency bands and hence wider spectrum. In this paper, indoor radio propagation at 28 GHz is studied by developing an efficient three-dimensional ray tracing (ETRT) method. The simulation software based on ETRT model has been verified measurement data. received signal strength indication path loss have shown significant agreement between measurement. Compared with conventional...

An ultra-wideband (UWB) filtering-antenna with controllable band notch is reported in this paper.The consists of a modified monopole antenna and defected microstrip structure (DMS).The using transition the feedline block triangular-shape slot on each side circular patch to produce wider impedance bandwidth better return loss.The DMS constructed U-shaped etched provide remove .A switch employed control created notch.The measured results show that proposed design exhibits wide WLAN rejection,...

This study presents a novel technique for designing an ultra-wideband (UWB) filteringantenna with dual sharp band notches. design is composed of modified monopole antenna integrated resonant structures. The using microstrip transition between the feedline and patch. In addition, block triangle-shaped slot loaded on each side ordinary circular patch to produce wide bandwidth better return loss higher frequency skirt selectivity. structures are constructed two double split ring resonators...

This article introduces an efficient analysis of indoor 4.5 GHz radio wave propagation by using a proposed three-dimensional (3-D) ray-tracing (RT) modeling and measurement. The attractive facilities this frequency band have significantly increased in communication systems. Radio predictions simulation method based on site-specific model, such as RT is widely used to categorize channels. Although practical measurement provides accurate results, it still needs considerable amount resources....

Efficient feeding geometries for rectenna design at 2.45 GHz are described. The proposed consists of two layers low cost FR‐4 substrates in which circular polarisation and harmonic rejection properties embedded. A voltage doubler rectifier with open stub matching network the radial is designed bottom substrate to transform ac signals a dc voltage. right triangular slot ground plane suppress second third harmonics improves conversion efficiency 75.043% an input power 20 dBm. has advantages...

The shortest path-searching with the minimal weight for multiple destinations is a crucial need in an indoor applications, especially supermarkets, warehouses, libraries, etc. However, when it used item searches, its becomes higher as searches only path between single sources to each destination separately. If conventional Dijkstra algorithm modified multi-destination mode then decreased, but output not considered real among items. Our proposed more efficient finding items minimum weight,...

Abstract Leakage of Liquefied Petroleum Gas and Liquified Natural (LPG/LNG) produces hazardous toxic impact on humans other living creatures. The authors developed a system to monitor control the gas leakage concentration. MQ-6 sensor is used for sensing level concentration in closed volume. To consequences environmental changes an IoT platform hosted by “Thingspeak” has been introduced. Both robust cloud-forwarded controls have applied prevent uncontrolled those gases auto-ignition. This...

In recent years, different filtering antenna topologies have been studied and proposed to meet various objectives of innovative technologies used in modern radar wireless communication applications. Filtering design is a combination microwave filter achieve radiating functions within one design. This improves the performance reduces size. Furthermore, it provides frequency reconfiguration by using active components employed However, mismatch between leads increase loss. Moreover, number may...

This paper presents a novel design of modified ultrawideband (UWB) antenna array integrated with multimode resonator bandpass filter. First, single UWB is and studied, using P-shape radiated patch instead full elliptical patch, for wide impedance bandwidth high realized gain. Then, two-element developed based on this an inter-element spacing 0.35 λL, in which λL the free space wavelength at lower band edge 3.1 GHz, compared to 0.27 reference designed traditional shape. The partial ground...

A comparative analysis of different recent filtering antenna designs is conducted. Based on the requirements modern wireless applications such as radar system, medical monitoring, and firefighter tracking, design need be more efficient. Many challenges have been put. These are in terms size, cost, impedance bandwidth polarization. To overcome these issues, many proposed. In this paper, a comparison past research work carried out. Various methodologies slot line antenna, frequency selective...

A new circular shape patch ultrawideband (UWB) single feed microstrip antenna is described in this paper.The radiated of the proposed UWB embedded with slots to improve radiation characteristics ensuring a wide impedance bandwidth.In ground plane, two rectangular rings are etched provide proper matching over frequency range.The layer overall dimensions 55 mm by 56 fabricated using low cost 4.3 relative permittivity FR-4 substrate.From results obtained, can an bandwidth ranging from 2.2 GHz...

In this communication, a broadband circularly polarized (CP) monopole antenna with coplanar waveguide (CPW) feeding is proposed. It consists of modified rectangular monopole, an asymmetric ground plane, two-linked inverted L-shaped strips on the left CPW ground, and two horizontal slots in plane. The overall dimension only 0.47λ o × o. prototype has been fabricated. measured results indicate that broad −10 dB impedance bandwidth (IBW) 107.5% (4.3 GHz, 1.85-6.15 GHz) 3 axial ratio ARBW 104.3%...

This paper presents the designs of an antenna and rectifying circuit that operate at frequency 2.45 GHz. The is designed based on aperture coupling technique to collect high amount RF signals. doubler with two HSMS286B fast switching diodes convert AC signals captured by DC voltage. rectifier are simulated using 4.4 permittivity low-cost FR-4 substrate. can achieve a gain 7.73 dB, return loss less than -30 dB bandwidth 216 MHz. At input power 20 output voltage 7 V. proposed have benefits...

A simple compact broadband circularly polarized monopole antenna, which comprises a monopole, modified ground plane with an implementing triangular stub and two asymmetrically connected U-shaped parasitic strips, is proposed. Simulation results show that the proposed antenna (0.62λo×0.68λo) achieves 10-dB impedance bandwidth (IBW) of 111% (1.7 to 5.95 GHz) 3-dB axial ratio (ARBW) 61% (3.3–6.2 peak gain between 2.9–4 dBi for entire ARBW. With its broad IBW ARBW, size structure, suitable...

This paper presents a rectifying antenna (rectenna) which operates at 2.45 GHz. The consists of two-layer low-cost FR-4 substrates separated by an air gap to enhance the gain. harmonic rejection property is embedded within design eliminate use filter (HRF) between and rectifier, reduces cost size rectenna. circuit two stages combined power combiner maximize output voltage. A fast switching Schottky diode HSMS 286B used for rectification process. measured RF-DC conversion efficiency proposed...

<span>A new design of filtenna with electronically reconfigurable band notch for <a name="_Hlk493351084"></a>ultra-wideband (UWB) applications is presented. The designed based on modified monopole antenna integrated resonant structure. To produce wider bandwidth better return loss and higher frequency skirt selectivity, the using microstrip transition in feedline block a triangular-shape slot each side circular patch. structure about U-shaped defected to achieve...

Electrical energy demand is increasing massively across the world due to population growth. From literature, number of will be double within next 50 years because continuous growth, so triple based on current demand. This paper presents an effective and innovative self-sustainable harvesting system. Here, approach developing a case where electrical can produced presented. The proposed system consists uninterruptible power supply, motor, voltage stabilizer, pendulum, controller, dynamo, solar...

This paper proposes a cost-efficient hybrid configuration based on optical code division multiple access (CDMA) system overlaid WDM grid. In the proposed only 15 wavelengths with channel separations up to 25GHz have been used carry out 120 users' data spectral efficiency of 1.6 b/s/Hz. other words, number users can share one wavelength in an CDMA technique, at 40Gbps line rate for each wavelength. Hence, improvement utilization be achieved. Results show that supports over 90km single mode...