Results 11 to 20 of about 98,816 (301)

Dual-band beam steering THz antenna using active frequency selective surface based on graphene

open access: yesEPJ Applied Metamaterials, 2021
A dual-band independently beam steering THz antenna is presented, which is composed of a broadband omnidirectional monopole source antenna surrounded by six hexagonal active frequency selective surface (AFSS) screens with switchable filtering response in
Yang Yao-Jia   +3 more
doaj   +1 more source

Decoupling for Millimeter-Wave Array Antennas Using Near-Field Shrinking Dielectric Superstrate

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
A decoupling concept of near-field shrinking dielectric superstrate (NFSDS) is proposed for large-scale, wideband, and dual-polarized mm-wave arrays.
Shengyuan Luo   +4 more
doaj   +1 more source

A High-Precision Hybrid Analog and Digital Beamforming Transceiver System for 5G Millimeter-Wave Communication

open access: yesIEEE Access, 2019
In this paper, the development of a millimeter-wave hybrid beamforming (HBF) transceiver system for 5G millimeter-wave multiple-input-multiple-output (MIMO) communication is presented.
Ruoqiao Zhang   +4 more
doaj   +1 more source

User Impact on Phased and Switch Diversity Arrays in 5G Mobile Terminals

open access: yesIEEE Access, 2018
In this paper, a mobile terminal phased array at 28 GHz with different scan angles is compared with a switch diversity antenna array at 28 GHz in the case of antenna beams pointing at the user's body.
Igor Syrytsin   +2 more
doaj   +1 more source

Wide-Band and Wide-Angle Scanning Phased Array Antenna for Mobile Communication System

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
A wide-band phased array antenna with wide-angle scanning capability for mobile communication system is proposed in this article. An air cavity is properly embedded into the substrate under each array element.
Guangwei Yang, Yiming Zhang, Shuai Zhang
doaj   +1 more source

A Non-Linear Correction Method for Terahertz LFMCW Radar

open access: yesIEEE Access, 2020
The nonlinearity in terahertz (THz) linear frequency modulated continuous wave (LFMCW) radar usually blurs the range profile and decreases the signal to noise ratio, hampering applications where high range-resolution is particularly emphasized.
Yade Li   +5 more
doaj   +1 more source

Superheterodyne-inspired waveguide-integrated metasurfaces for flexible free-space light manipulation

open access: yesNanophotonics, 2022
Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration ...
Wu Geng-Bo   +3 more
doaj   +1 more source

Millimeter-wave FET modeling based on a frequency extrapolation approach [PDF]

open access: yes, 2000
An empirical distributed model, based on electromagnetic analysis and standard S-parameter measurements up to microwave frequencies, is shown to be capable of accurate small-signal predictions up to the millimeter-wave range.
Cidronali, A.   +4 more
core   +1 more source

Millimeter Wave Communications [PDF]

open access: yesProceedings of the 15th ACM Workshop on Hot Topics in Networks, 2016
National Science Foundation (U.S.)
Hassanieh, Haitham   +3 more
openaire   +4 more sources

Theoretical Extension of a Microwave EM Method for Predicting the Terahertz Scattering of Electrically Large Complex Target

open access: yesLeida xuebao, 2018
Two important issues must be considered when modeling the terahertz (THz) wave scattering behavior using microwave EM methods. The first is the material response characteristics, including the metallic materials that may be beyond the scope of the Drude ...
Chen Hui   +4 more
doaj   +1 more source

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