Results 41 to 50 of about 673,683 (345)

An ultra-wideband orthogonal-beam directional graphene-based antenna for THz wireless systems

open access: yesScientific Reports, 2022
In terahertz (THz) wireless systems, graphene shows a tremendous promise for the implementation of miniaturized and reconfigurable antennas due to its unique tunable property. This paper presents a wideband beam reconfigurable directional antenna for THz
Sasmita Dash   +3 more
semanticscholar   +1 more source

A Wideband Antenna for mm-Wave Antenna-in-Package Application

open access: yesIEEE Access, 2022
Antenna-in-Package has been widely applied for millimeter-wave systems that integrate the MMIC chip and antenna into one package. For organic substrate Antenna-in-Package solutions, probe feeding and aperture-coupled feeding patches are generally used as radiation units.
Xuesong Zhang, Qian Wang, Jian Cai
openaire   +2 more sources

Dual-polarized 28-GHz air-filled SIW phased antenna array for next-generation cellular systems [PDF]

open access: yes, 2019
A high-performance dual-polarized eight-element air-filled substrate-integrated-waveguide (AFSIW) cavity-backed patch antenna array is presented. The antenna operates in the [26.5-29.5] GHz band and provides a stable high data-rate wireless communication
Kapusuz, Kamil Yavuz   +2 more
core   +1 more source

Design Techniques of Super-Wideband Antenna–Existing and Future Prospective

open access: yesIEEE Access, 2019
With the recent advancement and phenomenal progress in the field of wireless communication technology, there is an ever increasing demand for high data rates and improved quality of service for the end users.
Warsha Balani   +6 more
semanticscholar   +1 more source

Compact Super Wideband Frequency Diversity Hexagonal Shaped Monopole Antenna With Switchable Rejection Band

open access: yesIEEE Access, 2022
To reduce interference from other wireless communications, a compact super wideband frequency diversity hexagonal shaped monopole antenna with switchable rejection band capabilities is proposed.
Yanal S. Faouri   +6 more
semanticscholar   +1 more source

A Large Aperture UWB Antenna Array for Real Beam Radar Imaging

open access: yesInternational Journal of Antennas and Propagation, 2012
The development of four-element ultra-wideband (UWB) comb taper slot antenna array with 18 cm element spacing for real beam radar imaging is described. The four-element UWB array system with optimum element spacing is analyzed by energy pattern.
Chao-Hsiang Liao, Dau-Chyrh Chang
doaj   +1 more source

An ultra‐wideband low‐profile antenna for long‐term evolution/5G new radio sub‐6G applications

open access: yesElectronics Letters, 2022
An ultra‐wideband dual‐polarized antenna with a low profile is proposed for base‐station applications. The dual‐polarized antenna consists of two crossed dipoles, a square patch, and a square meta‐surface.
Yuehui Cui, Zhenxing Tu, RongLin Li
doaj   +1 more source

Design of Ultra-Wideband MIMO Antenna for Breast Tumor Detection

open access: yesInternational Journal of Antennas and Propagation, 2012
A MIMO antenna composed by microstrip line-fed circular slot antenna is proposed. This antenna is used in ultra-wideband microwave imaging systems aimed for early breast cancer detection.
Liting Wang, Bin Huang
doaj   +1 more source

Wideband, High-Gain, and Compact Four-Port MIMO Antenna for Future 5G Devices Operating over Ka-Band Spectrum

open access: yesApplied Sciences, 2023
In this article, the compact, ultra-wideband and high-gain MIMO antenna is presented for future 5G devices operating over 28 GHz and 38 GHz. The presented antenna is designed over substrate material Roger RT/Duroid 6002 with a thickness of 1.52 mm.
Sayed Aqib Hussain   +6 more
doaj   +1 more source

On Non-coherent MIMO Channels in the Wideband Regime: Capacity and Reliability [PDF]

open access: yes, 2006
We consider a multiple-input, multiple-output (MIMO) wideband Rayleigh block fading channel where the channel state is unknown to both the transmitter and the receiver and there is only an average power constraint on the input.
Medard, Muriel   +2 more
core   +2 more sources

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