Bandwidth Of Antenna Research Articles

Engineering Design of a Wideband and High-Gain Inline Slot-Array Waveguide Antenna using Low-Cost Metallized Polymer Technique

Engineering Design of a Wideband and High-Gain Inline Slot-Array Waveguide Antenna using Low-Cost Metallized Polymer Technique

Cross Polar Reduction of a High Gain Wide-band Stacked Microstrip Antenna using Metasurfaces

Cross Polar Reduction of a High Gain Wide-band Stacked Microstrip Antenna using Metasurfaces

A 9.73 GHz wide-band off-body patch antenna for biomedical applications

<span>The primary goal of this study is to design a simple antenna that has a wide bandwidth and low return loss for biomedical applications. The paper shows the recommended antenna’s three-stage modeling, with the goal of assessing every important parameter while a Teflon or polytetrafluoroethylene (PTFE) polymer substrate is used. In order to better comprehend, a comparison with prior studies employing teflon and similar substrate materials is conducted for the proposed patch antenna. The analysis includes the phantom model, evaluating performance criteria such as specific absorption rate (SAR), return loss, bandwidth, and gain values relevant to biomedical applications. The antenna works at two different frequencies: 9.73 and 9.39 GHz, one in free space and another in a skin-cotton layer. The bandwidth of the antenna is 4.067 GHz in free space at the resonance frequency of 9.73 GHz, where the return loss is -62.18 dB. The performance of the proposed antenna in the field of biomedical applications, its underlying reasons, and its impacts are discussed in detail in this study.</span>

Circularly Polarized Wide-Band Quad-Element MIMO Antenna With Improved Axial Ratio Bandwidth and Mutual Coupling

Circularly Polarized Wide-Band Quad-Element MIMO Antenna With Improved Axial Ratio Bandwidth and Mutual Coupling

Miniaturized T and Inverted T Slotted Ultra Wide Band Antenna with Defected Ground (DG) System for 5G Communication

Miniaturized T and Inverted T Slotted Ultra Wide Band Antenna with Defected Ground (DG) System for 5G Communication

A Wide Band Antenna for both S-Band and CBand Satellite Communication Applications

A Wide Band Antenna for both S-Band and CBand Satellite Communication Applications

On the Impact of Nonuniform Phase Distributions across the Beamwidth and Bandwidth of Antennas for SAR Imaging

On the Impact of Nonuniform Phase Distributions across the Beamwidth and Bandwidth of Antennas for SAR Imaging

5G mm-Wave Technology: Innovative Design of Integrating mm-Wave Wideband Antenna With a Compact CP Microwave Antenna for Diverse Applications

5G mm-Wave Technology: Innovative Design of Integrating mm-Wave Wideband Antenna With a Compact CP Microwave Antenna for Diverse Applications

Design of X/Ku and K Band Flexible Cloud-Fractal Wideband Antenna with Bandwidth Estimation Using CMA

Design of X/Ku and K Band Flexible Cloud-Fractal Wideband Antenna with Bandwidth Estimation Using CMA

Millimeter Wave Wideband and Low-Loss Compact Power Divider Based on Gap Waveguide: For Use in Wideband Antenna Array System

Millimeter Wave Wideband and Low-Loss Compact Power Divider Based on Gap Waveguide: For Use in Wideband Antenna Array System

Machine Learning-Based Optimized 3G/LTE/5G Planar Wideband Antenna With Tri-Bands Filtering Notches

Machine Learning-Based Optimized 3G/LTE/5G Planar Wideband Antenna With Tri-Bands Filtering Notches

A Low RCS Wideband Antenna Based on Share-structure of FSA and ME-dipole

A Low RCS Wideband Antenna Based on Share-structure of FSA and ME-dipole

A Planar Wideband Antenna for Full Duplex Communication With Significant Peak Gain

A Planar Wideband Antenna for Full Duplex Communication With Significant Peak Gain

Machine Learning-Assisted Quasi-Bisection Method for Pixelated Patch Antenna Bandwidth Optimization

Machine Learning-Assisted Quasi-Bisection Method for Pixelated Patch Antenna Bandwidth Optimization

A Study on Microstrip Array Antenna with FSS for Next Generation Cellular Communication

Abstract: Fifth-generation wireless, often known as 5G, is the next version of cellular technology and is intended to provide major improvements to the speed and responsiveness of wireless networks. In addition, the increased bandwidth and improved antenna technologies that come with 5G make it possible for a significant increase in the quantity of data that can be transmitted via a wireless network. In order to build a successful next-generation cellular communication system in the terahertz (THz) regime, it is necessary to create high-directivity antennas, which will enable the signal to travel further than 0.1 km. This will allow the system to function effectively. Concurrently, large bandwidth antennas should be designed in order to facilitate the information's transmission

Design of VHF Horizontal Polarization Omnidirectional Antenna

Horizontally-polarized antennas are usually used in the system of polarization diversity to improve the performance of communication chain and its reliability. Furthermore, the bandwidth of the antenna openly governs the rates of data communication. In order to meet the engineering requirements of high rates for data transmission and multi-band communication, the antenna bandwidth of the communication system needs to be further increased. In this paper we present the scheme of an omnidirectional loop antenna for horizontally-polarized systems. The research status of the horizontally-polarized omnidirectional antenna, and the working principle and radiation characteristics of the small loop antenna are elaborated in detail. The field expression of the loop antenna is deduced from the wave equation, and the characteristics of the far-field and the near-field of the loop antenna are analyzed. On the basis of theoretical analysis, a practical loop antenna is researched and developed for the demands of wireless communication engineering applications. Moreover, we present the related loop antenna technology and how to implement it. The radiation pattern of the antenna is obtained through computer simulations. Our empirical results show that the small loop antenna based on capacitive loading can realize the radiation characteristics of the horizontal polarization omnidirectional pattern. The small loop antenna has the advantages of small size and easy portability, and the small loop antenna operating in the resonant state has a high Q value, which gives it better frequency selectivity. The design and research of this paper have important reference significance for the engineering design and application of the VHF band horizontally-polarized omnidirectional antenna.

Multi-objective optimization of a compact wideband antenna using grey relational analysis

In this article, a wide bandwidth along with compactness is achieved using a multi-objective optimization technique in a simple X-band antenna structure. The grey relational analysis is used to predict S11, bandwidth and gain for specific combinations of corner-cut length (lc), slot length (ls), and slot width (wst) of the proposed antenna. The effect of corner-cut length, slot length, and slot width on S11, −10 dB bandwidth, and antenna gain is also analyzed. This paper discusses a slotted patch antenna that can cover the X-band frequency range. The modifications involve adding four corner-cut and a parallelogram-shaped slot to the rectangular patch along with a tapered feedline, resulting in a wide bandwidth of 1.55 GHz (9.7 GHz to 11.25 GHz). The proposed compact antenna (23 mm × 32 mm × 1.575 mm) has a peak gain of 8.8 dBi at 10 GHz and can be used in radar communication. An equivalent circuit analysis is done and S11 of the circuit is matched with simulated and measured results. It is appropriate for use as a unit element in an antenna array due to its clear and straightforward design.

A high bandwidth dimension ratio compact super wide band-flower slotted microstrip patch antenna for millimeter wireless applications

A compact high bandwidth ratio (BDR) super wide band flower slotted micro strip patch antenna (SWB-FSMPA) for super wide band (SWB) applications is presented. The SWB-FSMPA is constructed on a FR-4 substrate having a size of 16 × 22 mm2. The SWB-FSMPA incorporates a 50 Ω tapered micro strip line and a rectangular beveled defected ground structure (RB-DGS). This design enables a simulation bandwidth from 3.78 to 109.86 GHz, allowing for coverage of various wireless applications such as WiMAX (3.3–3.6 GHz), 5G (3.3–3.7 GHz), WLAN (5.15–5.825 GHz), UWB (3.1–10.6 GHz), Ku– (12–18 GHz), K– (18–27 GHz), Ka– (27–40 GHz), V– (40–75 GHz), and W– (75–110 GHz) millimeter wave bands. The SWB-FSMPA antenna exhibits a gain that varies within the range of 3.22–7.23 dBi and a peak efficiency of 93.3 %. The SWB-FSMPA possesses a bandwidth ratio (BR) of 29.1:1, a BDR of 5284 in the frequency domain, a minimal group delay (GD) fluctuation of <0.48 ns, and a linear phase in the time domain, making it well-suited for SWB applications.

Wideband 0.5–50 GHz double‐ridged guide horn antenna using coaxial‐to‐ridge waveguide launcher

AbstractEver‐increasing bandwidth requirements from various industries drive the need for the ever‐increasing bandwidth of antennas used for testing. Broadband Double‐Ridged Guide Horn (DRGH) antennas are used extensively in antenna measurement and ElectroMagnetic Compatibility/Interference (EMC/I) testing. The current state‐of‐the‐art broadband DRGH antennas reported in the literature for use in measurement applications cover bandwidth ratios as large as 36:1 (0.5–18 GHz). This paper presents the design and realisation of a DRGH antenna with a 100:1 bandwidth ratio (0.5–50 GHz). To achieve such a wide bandwidth, the ridge gap, width and feed were optimised, and a novel coaxial‐to‐ridge waveguide launcher section based on a typical Vivaldi antenna was developed. Backward radiation was reduced using an absorber‐filled cavity. A prototype DRGH antenna was manufactured using additive manufacturing, also referred to as 3D printing. Simulated and measured results obtained in an anechoic chamber are presented.

ВИВЧЕННЯ ФРАКТАЛІВ В УНІВЕРСИТЕТСЬКОМУ КУРСІ ЕЛЕКТРОДИНАМІКИ

The problem of constructing antennas adapted to operate in a wide frequency band has been and remains relevant. One of the methods to build such wideband antenna structures is the utilization of fractals. The characteristics of the fractal variation of the Pistolkors loop vibrator with iterations 0 (the Pistolkors vibrator itself), iteration № 1, and № 2 were designed and measured. The formation of a wideband zone of continuous matching was observed as early as iteration № 2.