Results 51 to 60 of about 36,752 (222)

A 140-GHz Transceiver Front-End in 45-nm RFSOI CMOS Using Antenna Power Combining and Leakage Cancellation

open access: yesIEEE Access
In this paper we present a 140 GHz transceiver front-end in 45 nm SOI CMOS. The transmitter achieves a measured an EIRP of 15 dBm using on-antenna and in-air power combining techniques in a multi-port slot-dipole-array without ...
Vincent Lammert   +2 more
doaj   +1 more source

Organic electrochemical transistors for neural recording and modulation: From mixed‐conduction physics to closed‐loop biointerfaces

open access: yesInfoMat, EarlyView.
OECT‐based neural interfaces integrate mixed ionic‐electronic transduction, soft biointegration, multimodal sensing, and closed‐loop modulation, enabling adaptive recording, neurochemical monitoring, and intelligent therapeutic strategies. Abstract Next‐generation neural interfaces increasingly aim to couple neural recording with local processing and ...
Chao Zhao   +10 more
wiley   +1 more source

Accuracy Low-Cost “Handshake” Two-Way Ranging Protocol Applied to Road Traffic Communications

open access: yesTransport and Telecommunication
The densification of the vehicle fleet leads to numerous challenges in road safety management. Wireless Sensor Networks (WSN) helps to manage vehicle-vehicle-infrastructure interactivity, in particular to predict dangers and avoid accidents, detect and ...
Miasse Herman Olivier   +3 more
doaj   +1 more source

Reliability and Sensitivity Analysis of Wireless Sensor Network Using a Continuous-Time Markov Process

open access: yesMathematics
A remarkably high growth has been observed in the uses of wireless sensor networks (WSNs), due to their momentous potential in various applications, namely the health sector, smart agriculture, safety systems, environmental monitoring, military ...
Amit Kumar   +2 more
doaj   +1 more source

Recent Advances in the Hardware of Visible Light Communication

open access: yesIEEE Access, 2019
Visible light communication (VLC) is an emerging technology that can transform lighting facilities into access points for wireless communication. Its development is bottlenecked by the cut-off frequencies (e.g., -6-dB electrical cut-off frequency fc and -
Yilin Zhang   +4 more
doaj   +1 more source

High‐Speed Integrated Graphene‐Silicon Slot‐Waveguide Electro‐Absorption Modulator at 2 and 1.5 µm Wavebands

open access: yesLaser &Photonics Reviews, EarlyView.
A high‐speed, efficient, robust, and compact 2‐μm$\mathrm{\mu}\mathrm{m}$ waveband E/O absorption modulator based on a graphene‐silicon slot waveguide is demonstrated. This work represents a significant advancement towards the realization of high‐speed integrated E/O modulators for optical communication systems operating at the 2‐μm$\mathrm{\mu}\mathrm{
Chao Luan   +3 more
wiley   +1 more source

Transceiver Optimization for Multiuser Multiple-Input Multiple-Output Full-Duplex Amplify-and-Forward Relay Downlink Communications

open access: yesTelecom
This paper considers the transceiver design in a multiuser multiple-input multiple-output (MIMO) full-duplex (FD) amplify-and-forward (AF) relay downlink communication system, where users simultaneously transmit data via an FD relay node.
Yunlong Shao, Thomas Aaron Gulliver
doaj   +1 more source

Low‐Crosstalk Silicon Photonic Switch Fabrics for AI Datacenters and High‐Capacity Optical Interconnects: Device‐Level Origins and Mitigation

open access: yesLaser &Photonics Reviews, EarlyView.
Scaling silicon photonic switch fabrics for AI datacenters is fundamentally constrained by accumulated crosstalk, insertion loss, and device‐level non‐idealities. This work establishes a device‐to‐link‐to‐system framework that connects the physical origins of crosstalk to practical mitigation strategies across device, circuit, and control levels.
Peng Bao   +15 more
wiley   +1 more source

Mechanically Adjustable 4-Channel RF Transceiver Coil Array for Rat Brain Imaging in a Whole-Body 7 T MR Scanner

open access: yesSensors
Investigations of human brain disorders are frequently conducted in rodent models using magnetic resonance imaging. Due to the small specimen size and the increase in signal-to-noise ratio with the static magnetic field strength, dedicated small-bore ...
Sigrun Roat, Lena Nohava, Elmar Laistler
doaj   +1 more source

Enhanced 3D Filter‐Exchange Imaging Using Multi‐Slab Acquisition

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Starting from the implementation of a single‐slice FEXI sequence, a 3D method was developed to accelerate a FEXI experiment and acquire a multi‐slice volume. Methods 3D multi‐slab FEXI divides the volume of interest into different slabs.
Jacopo Frignani   +3 more
wiley   +1 more source

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