Results 1 to 10 of about 179,089 (312)

A Dual-Band Dual-Polarized Base Station Antenna Array With Isolation Enhancement

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
In this paper, a dual-band dual-polarized antenna with isolation enhancement is designed. The proposed antenna operates in the frequency range of 3.4–3.6 GHz and 4.8-5 GHz, where the center frequency of the high band (HB) is 1.4 times that of the ...
Lei Ge   +4 more
doaj   +1 more source

A Linear-Power-Regulated Wireless Power Transfer Method for Decreasing the Heat Dissipation of Fully Implantable Microsystems

open access: yesSensors, 2022
Magnetic coupling resonance wireless power transfer can efficiently provide energy to intracranial implants under safety constraints, and is the main way to power fully implantable brain–computer interface systems.
Haochuan Wang   +6 more
doaj   +1 more source

High-Performance Metamaterial Light Absorption from Visible to Near-Infrared Assisted by Anti-Reflection Coating

open access: yesPhotonics, 2023
This study experimentally demonstrates two types of ultra-broadband metamaterial absorbers with high performance in the visible-to-near-infrared range by using different anti-reflection coatings (i.e., SiO2 and Si3N4) and a multi-subcell Ti-SiO2-Ti ...
Dongqing Wu   +4 more
doaj   +1 more source

Radio-Frequency Coulomb-Blockade Thermometry [PDF]

open access: yesPhysical Review Applied, 2022
We present a scheme and demonstrate measurements of a Coulomb blockade thermometer (CBT) in a microwave transmission setup. The sensor is embedded in an $LCR$ resonator, where $R$ is determined by the conductance of the junction array of the CBT. A transmission measurement yields a signal that is directly proportional to the conductance of the CBT ...
Blanchet, Florian   +6 more
openaire   +4 more sources

Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar

open access: yesSensors, 2022
In the context of all-digital radar systems, phase-modulated continuous wave (PMCW) based on pseudorandom binary sequences (PRBSs) appears to be a prominent candidate modulation scheme for applications such as autonomous driving.
Lucas Giroto de Oliveira   +9 more
doaj   +1 more source

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

open access: yesActuators, 2023
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high
Rui Ye   +3 more
doaj   +1 more source

Design and Micro-Nano Fabrication of a GaAs-Based On-Chip Miniaturized Bandpass Filter with Intertwined Inductors and Circinate Capacitor Using Integrated Passive Device Technology

open access: yesNanomaterials, 2022
In this study, we propose a miniaturized bandpass filter (BPF) developed by combining an approximate circular (36-gon) winding inductor, a circinate capacitor, and five air-bridge structures fabricated on a gallium arsenide (GaAs) substrate using an ...
Jian Chen   +6 more
doaj   +1 more source

HTsort: Enabling Fast and Accurate Spike Sorting on Multi-Electrode Arrays

open access: yesFrontiers in Computational Neuroscience, 2021
Spike sorting is used to classify the spikes (action potentials acquired by physiological electrodes), aiming to identify their respective firing units. Now it has been developed to classify the spikes recorded by multi-electrode arrays (MEAs), with the ...
Keming Chen   +5 more
doaj   +1 more source

Evaluation of inactivation of bovine coronavirus by low-level radiofrequency irradiation

open access: yesScientific Reports, 2023
Inactivation of influenza A virus by radiofrequency (RF) energy exposure at levels near Institute of Electrical and Electronics Engineers (IEEE) safety thresholds has been reported.
Jody C. Cantu   +9 more
doaj   +1 more source

Dynamical and topological properties of the spin angular momenta in general electromagnetic fields

open access: yesCommunications Physics, 2023
Spin angular momenta play important roles in light–matter interactions, leading to the emergence of the spin Hall effect and topological quasiparticles in modern optics.
Peng Shi   +5 more
doaj   +1 more source

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