Results 71 to 80 of about 71,675 (317)

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

open access: yesAdvanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son   +5 more
wiley   +1 more source

Two-Stage Code Acquisition Employing Search Space Reduction and Iterative Detection in the DS-UWB Downlink [PDF]

open access: yes, 2008
—In this paper we propose and investigate an iterative code acquisition scheme assisted by both search space reduction and iterative Massage Passing (MP), which was designed for the Direct Sequence-Ultra WideBand (DS-UWB) DownLink (DL).
Seunghwan Won   +3 more
core   +1 more source

Submicron Metasurface Reconfigured Multiband Smart Windows

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a submicron metasurface reconfigured multiband thermochromic smart window. By integrating subwavelength nanostructures into a Fabry−Perot resonator configuration, it mitigates conventional trade‐offs to simultaneously deliver high luminous transmittance and robust solar heating and radiative cooling modulation capabilities ...
Guanya Wang   +8 more
wiley   +1 more source

A Mathematical Model for Wideband Ranging

open access: yesIEEE Journal of Selected Topics in Signal Processing, 2015
Wideband ranging is essential for numerous emerging applications that rely on accurate location awareness. The quality of range information, which depends on network intrinsic properties and signal processing techniques, affects the localization accuracy.
Stefania Bartoletti   +3 more
openaire   +2 more sources

Atomic Layer Deposition Processes: Versatile Platforms for Engineering ZnO‐Chitosan Biointerfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Vapour phase metalation (VPM), multiplied pulsed vapour phase infiltration (MPI), and O2 plasma‑enhanced atomic layer deposition (PEALD) tailor Zn–chitosan (Zn‑CS) films. PEALD improves wettability and biocompatibility. MPI enhances semiconductor behavior. Antiseptic selectivity: VPM → E. coli; MPI → H. pylori.
Mabel Moreno   +17 more
wiley   +1 more source

Target Parameter Estimation for OTFS-Integrated Radar-Communication Systems

open access: yesIEEE Access
In high-mobility scenarios envisioned for 6G communications, orthogonal time frequency space (OTFS) has emerged as a promising alternative to conventional orthogonal frequency division multiplexing (OFDM) schemes.
Jiayin Liang, Jinfang Wen, Zhiling Tang
doaj   +1 more source

A Low-Profile and Wideband Unidirectional Antenna Using Bandwidth Enhanced Resonance-Based Reflector for Fifth Generation (5G) Systems Applications

open access: yesIEEE Access, 2019
The previously proposed resonance-based reflector (RBR) antennas have the merits of wide impedance bandwidth, low-profile, and unidirectional pattern; however, their front-to-back ratio (FBR) bandwidths are narrow.
Bao-Jian Wen   +5 more
doaj   +1 more source

Localization of water surface waves in a heterostructure channel with corrugated sidewalls

open access: yesAIP Advances, 2021
This paper describes the fabrication of a water channel heterostructure by combining two types of periodic sidewalls with different duty ratios. This enables the manipulation and localization of water surface waves in bands that are traditionally ...
Jia-Yi Zhang   +4 more
doaj   +1 more source

Design of Multiband Balanced Folded Dipole Antenna Based on a Dual-Arm Structure for Mobile Handsets

open access: yes, 2008
YesIn this paper, a balanced antenna for mobile handset applications with enhanced bandwidth performance, that covers four bands (GSM1800, GSM1900, UMTS and 2.4-GHz WLAN), is investigated.
Abd-Alhameed, R.A.   +7 more
core   +1 more source

A wideband RF mixing-DAC achieving IMD<-82 dBc up to 1.9 GHz [PDF]

open access: yes, 2016
This paper presents a highly linear wideband Mixing-DAC architecture. A current-steering DAC core and a mixer are co-integrated at a unit current-cell level. A 1 bit DAC output stage is cascoded by a 1 bit mixer to form the Mixing-DAC current cell.
Geelen, G.J.G.M.   +9 more
core   +1 more source

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