Results 101 to 110 of about 533,787 (299)
Dual‐Band Reflectarray Antennas Using Integrated Resonant and Non‐Resonant Natures of Metallic Waveguide Elements at Millimeter Wave Frequencies [PDF]
, 2023 Hsi‐Tseng Chou +5 more
openalex +1 more source
Bandwidth Enhancement of Dielectric Resonator Reflectarray Antenna [PDF]
Electromagnetics, 2014 Aperture-coupled dielectric resonator antenna is proposed using a novel reflectarray antenna unit cell structure. It is shown that a bowtie-shaped slot can enhance the bandwidth performance of a reflectarray antenna. The unit cell's reflection phase response was verfified experimentally using the waveguide simulator method.
Ahmadi, Farzaneh +3 more
openaire +1 more source
Wide‐Angle Scanning Array With Sidelobe Reduction Using Single Substrate Layer
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.Without the need for amplitude weighting, the proposed array can achieve beam scanning from −70° to 70° with a gain fluctuation of less than 0.8 dB while maintaining sidelobe levels below −11 dB. The proposed array has the advantages of simple structure, wide beam coverage, low gain fluctuation, and low sidelobe level.
Shang‐Yang Li +5 more
wiley +1 more source
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This work presents an adaptive reflectarray for the high‐intensity radiation fields (HIRF) prevention in X‐band, thereby reducing the risk of interference or damage to front‐ends, receiving links, and other electronic components. ABSTRACT This paper presents an energy selective reflectarray antenna with field‐induced gain to prevent the high‐intensity ...
Jihong Zhang +5 more
wiley +1 more source
Design and Characterisation of All‐Dielectric Metasurface Reflector for mmWave Antennas
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This study presents an all‐dielectric artificial magnetic conductor (AMC) operating at 77 GHz with zero‐phase reflection, featuring a −1‐dB reflection bandwidth of 3.6 and 8.2 GHz for ± 45° and ± 90° reflection phases, respectively. Simulation and measurement results validate the design's performance while highlighting discrepancies attributed to ...
Muhammad Uzair +3 more
wiley +1 more source
Reducing the Sidelobe Level of Reflectarray Antennas Using Phase Perturbation Method
Iranian Journal of Electrical and Electronic Engineering, 2020 Phase Perturbation Method (PPM) is introduced as a new phase-only synthesis method to design reflectarray antennas so as their sidelobe level is reduced.
M. Khalaj-Amirhosseini, M. Nadi-Abiz
doaj
IEEE Access, 2018 This paper describes a general framework for the optimization of very large reflectarrays for space applications. It employs the generalized intersection approach as optimizing algorithm, integrating a number of techniques that substantially improve the ...
D. R. Prado +4 more
semanticscholar +1 more source
A Wideband Multibeam Transmitarray Antenna Based on 3‐D FSS
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna. Through numerical calculations, simulations and measurements, the TA demonstrates outstanding multibeam radiation characteristics. ABSTRACT This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna.
Longfei Wang +4 more
wiley +1 more source
81-Element single-layer reflectarray with double-ring phasing elements for wideband applications [PDF]
, 2010 A microstrip reflectarray antenna utilizes a planar array of printed patch elements and a conventional prime or offset feed to form an alternative to the parabolic reflector [1].
Bialkowski, M.E. +3 more
core +1 more source
Broadband Lumped Mirror Array mmWave Antenna for Wireless and Defense Systems
Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.This article introduces a novel lumped mirror array mmWave antenna designed for multiband microwave applications, including 5G, satellite communication, and defense systems. The antenna operates over a broad frequency range from 4.7 to 67.63 GHz, offering excellent impedance bandwidth of 70.4%. Developed on an FR‐4 substrate with dimensions of 160 × 70
Manish Varun Yadav +7 more
wiley +1 more source