Results 1 to 10 of about 155,552 (273)

A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices [PDF]

open access: yes, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEEA reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied.
AbuTarboush, H.F.   +13 more
core   +2 more sources

On the Non-Coherent Wideband Multipath Fading Relay Channel [PDF]

open access: yes, 2010
We investigate the multipath fading relay channel in the limit of a large bandwidth, and in the non-coherent setting, where the channel state is unknown to all terminals, including the relay and the destination.
Fawaz, Nadia, Medard, Muriel
core   +1 more source

An Efficient Solution to the Perspective-n-Point Problem for Camera With Unknown Focal Length

open access: yesIEEE Access, 2020
To achieve lower time consumption in pose estimation of an uncalibrated camera, a novel and efficient method to the Perspective-n-Point problem (PnP) is proposed in this article.
Bingyi Zhou, Ziqiang Chen, Qinghua Liu
doaj   +1 more source

CPW Fed UWB Antenna by EBGs With Wide Rectangular Notched-Band

open access: yesIEEE Access, 2016
Ultra-wideband (UWB) antennas with wide rectangular notched-band are proposed in this paper. The rectangular notched-band design is realized by placing dual mushroom-type electromagnetic-bandgap (EBG) structures on the CPW feeding line.
Lin Peng   +4 more
doaj   +1 more source

Tunable Triple-Band Terahertz Absorber Based on Bulk-Dirac-Semimetal Metasurface

open access: yesIEEE Photonics Journal, 2021
A tunable triple-band absorber based on bulk-Dirac-semimetal (BDS) metasurface is proposed in the terahertz (THz) range. The design is comprised of a BDS film with a pattern of dual ring slots and a dielectric layer stacked on a fully reflective gold ...
Jiao Wang, Xinguo Wan, Yannan Jiang
doaj   +1 more source

Compact UWB Monopole for Multilayer Applications [PDF]

open access: yes, 2006
A novel compact, dual layer UWB monopole antenna is presented. This low profile ultra-wideband antenna is fed by a 50 ? shielded strip-line with an array of metal vias making the conducting walls.
Bai, Qiang   +3 more
core   +1 more source

Front to Back Ratio Bandwidth Enhancement of Resonance Based Reflector Antenna by Using a Ring-Shape Director and Its Time-Domain Analysis

open access: yesIEEE Access, 2017
An uni-directional antenna designed by resonance-based reflector has the merits of compact size, low-profile, and ultra-wide impedance bandwidth. However, its front to back ratio (FBR) bandwidth is narrow owing to the small reflection coefficient values ...
Lin Peng   +3 more
doaj   +1 more source

An Electrically Tunable Terahertz Filter Based on Liquid-Crystal-Filled Slits with Wall Corrugations

open access: yesPhotonics, 2022
We propose a type of hollow planar waveguide with corrugated walls, which can realize electrically tunable terahertz (THz) filtering by filling the slit with liquid crystals. When the THz signals propagate in a planar waveguide with periodic corrugations,
Shi-Yang Zhang   +6 more
doaj   +1 more source

Multi-functional Device with Switchable Functions of Absorption and Polarization Conversion at Terahertz Range

open access: yesNanoscale Research Letters, 2018
Terahertz electromagnetic (EM) wave components usually have a single function, such as they can only convert the polarization state of an incident wave or absorb the incident energy, which would be a limitation for their applications.
Lin Peng, Xing Jiang, Si-min Li
doaj   +1 more source

Resonance-Based Reflector and Its Application in Unidirectional Antenna with Low-Profile and Broadband Characteristics for Wireless Applications

open access: yesSensors, 2016
In this research, the novel concept of a resonance-based reflector (RBR) was proposed, and a ring-shaped RBR was utilized to design a unidirectional antenna with low-profile and broadband characteristics.
Lin Peng   +4 more
doaj   +1 more source

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