Results 61 to 70 of about 10,565,311 (162)

A Frequency‐Reconfigurable Dual‐Band Nematic Liquid‐Crystal Reflectarray Antenna With Angular Beam Separation for Satellite Communication

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This paper presents a frequency‐reconfigurable dual‐band nematic liquid‐crystal (LC) reflectarray antenna with angular beam separation for satellite communication. Dual‐band operation at 12 and 28 GHz is achieved through voltage‐controlled reconfiguration of the LC layer.
Hsi‐Hsir Chou   +3 more
wiley   +1 more source

Optimizing amplitude distribution in a feed array to control side-lobe levels of a beam-steering metasurface

open access: yes, 2023
An attempt to establish analogy between the antenna array pattern synthesis theory and the metasurface beam-steering control is presented in this paper. Beam steering has been achieved by using a phase transformation metasurface, and the side-lobe level (
Afzal, MU   +4 more
core   +1 more source

Optimizing circular antenna arrays with artificial rabbits optimization for beam control and side lobe reduction

open access: yesDiscover Applied Sciences
Circular antenna arrays (CAA) are substantially utilized for numerous wireless applications such as beamforming, fifth generation (5G) communication, and Internet of Things (IoT) applications however, it is frequently challenging to retain the high ...
Sunil Kumar   +2 more
doaj   +1 more source

Circuit‐Theoretic Modeling and Simulation Study of Near‐Field MIMO Arrays of Dipole Antennas

open access: yesActive and Passive Electronic Components, Volume 2026, Issue 1, 2026.
Near‐field mutual coupling among closely spaced antennas limits the deployment of wireless MIMO interconnects in chip‐to‐chip communication. This paper presents a circuit‐theoretic modeling and simulation study of near‐field MIMO (NFMIMO) systems using 1 × 1 and 2 × 2 dipole arrays.
Abhishek Javali   +3 more
wiley   +1 more source

A High-Performance Transmitarray Antenna with Thin Metasurface for 5G Communication Based on PSO (Particle Swarm Optimization)

open access: yesSensors, 2020
A 5G metasurface (MS) transmitarray (TA) feed by compact-antenna array with the performance of high gain and side-lobe level (SLL) reduction is presented.
Chengtian Song   +3 more
doaj   +1 more source

Successful Zanubrutinib Monotherapy in a Rare CNS Presentation of Relapsed CLL

open access: yesCase Reports in Hematology, Volume 2026, Issue 1, 2026.
Background Central nervous system (CNS) involvement is an infrequent complication of chronic lymphocytic leukemia (CLL), occurring in less than 1% of cases. We report a case of a 63‐year‐old male with a history of CLL previously treated with ibrutinib but discontinued early due to intolerance. As a result, the patient was then treated with obinutuzumab
Vishaal Kunta   +4 more
wiley   +1 more source

Synthesis of Circular Antenna Arrays for Achieving Lower Side Lobe Level and Higher Directivity Using Hybrid Optimization Algorithm [PDF]

open access: yes
Circular antenna arrays (CAAs) find extensive utility in a range of cutting-edge communication applications such as 5G networks, the Internet of Things (IoT), and advanced beamforming technologies.
Vikas Mittal   +11 more
core   +1 more source

Panel Misalignment Effects on the Radiation Pattern from a Solid Surface Deployable Antenna [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2019
This paper presents an analysis of antenna performance degradation due to the panel misalignment in a solid surface deployable antenna. The misalignment of the panel causes a phase error at the aperture plane due to path length differences.
Seung-Joo Jo   +4 more
doaj   +1 more source

Window‐Shaped mmWave MIMO Antenna for 5G Devices Using Characteristics Mode Analysis

open access: yesInternational Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
A compact four‐element mmWave MIMO antenna designed using characteristics mode analysis (CMA) with wideband performance and high isolation is presented. The antenna is realized on a 0.254‐mm Rogers RO5880 substrate with meandered conductive strips arranged in a window‐shaped configuration and a partially truncated ground‐plane notch. CMA is employed to
Saad Hassan Kiani   +8 more
wiley   +1 more source

Irregular superstrate array for the reduction of the side lobe level in satcom user terminal antennas

open access: yes, 2016
International audienceWe present here the irregular superstrate array, a novel technique to control the side lobe level (SLL) of an antenna array using an isophoric excitation.
Nelson J. G. Fonseca   +7 more
core   +1 more source

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