Results 31 to 40 of about 419,970 (292)

Energy efficient indoor localisation for narrowband internet of things

CAAI Transactions on Intelligence Technology, 2023
There are an increasing number of Narrow Band IoT devices being manufactured as the technology behind them develops quickly. The high co‐channel interference and signal attenuation seen in edge Narrow Band IoT devices make it challenging to guarantee the
Ismail Keshta, Mukesh Soni, Mohammed Wasim Bhatt, Azeem Irshad, Ali Rizwan, Shakir Khan, Renato R. Maaliw III, Arsalan Muhammad Soomar, Mohammad Shabaz   +8 more
doaj   +1 more source

Multi-band SWIR-MWIR-LWIR Type-II superlattice based infrared photodetector

Results in Optics, 2021
Type-II InAs/GaSb superlattices (T2SLs) has drawn a lot of attention since it was introduced in 1970, especially for infrared detection as a system of multi-interacting quantum wells.
Manijeh Razeghi, Arash Dehzangi, Jiakai Li   +2 more
doaj   +1 more source

Ultra-Wideband Tunable Microwave Photonic Filter Based on Thin Film Lithium Niobate

Photonics, 2023
In signal processing of the growing semaphore, a microwave photonic filter (MPF) is capable of dealing with high-frequency signals, offering the advantages of high bandwidth, easy tuning, and more.
Mengjie Han, Jinye Li, Chuangchuang Wei, Jianguo Liu   +3 more
doaj   +1 more source

Experimental Study of Frequency Multiplication in a Distributed Array of SIS Junctions [PDF]

, 2014
We report the first experimental off-chip detection of frequency multiplication in a distributed array of superconductor–insulator–superconductor (SIS) junctions.
Belitsky, Victor, Billade, Bhushan, Pavolotsky, Alexey   +2 more
core   +1 more source

Vernier spectrometer using counter-propagating soliton microcombs [PDF]

, 2018
Acquisition of laser frequency with high resolution under continuous and abrupt tuning conditions is important for sensing, spectroscopy and communications. Here, a single microresonator provides rapid and broad-band measurement of frequencies across the
Bao, Chengying, Bowers, John, Shen, Boqiang, Tran, Minh, Vahala, Kerry, Wang, Heming, Wu, Lue, Yang, Ki Youl, Yang, Qi-Fan, Yariv, Amnon, Zhang, Zhewei   +10 more
core   +3 more sources

Smart Device for Multi-band Industrial IoT Communications

Procedia Computer Science, 2019
Abstract Data and object connectivity are the key and the critical component of industry 4.0, Connectivity of software, equipment, data ... are all massive data to be processed. Combined with cybersecurity, they become fundamental elements for creating intelligence in an industrial system that can increase the flexibility of production in addition to
Oussama Rholam, Mohamed Tabaa, Fabrice Monteiro et Abbas Dandache   +2 more
openaire   +1 more source

Single- and Multi-Stopband Reconfigurable FSS [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this work, a reconfigurable frequency-selective surface (FSS) with a very simple biasing network that offers singleor multi-band response is presented. The proposed structure is formed by the V-shaped elements on a single-sided dielectric substrate. A
Thayuan Rolim de Sousa, Deisy Formiga Mamedes, Juliete da Silva Souza, Valdemir Praxedes da Silva Neto   +3 more
doaj   +1 more source

Performance Analysis of Strained Monolayer MoS$_{2}$ MOSFET

, 2013
We present a computational study on the impact of tensile/compressive uniaxial ($\varepsilon_{xx}$) and biaxial ($\varepsilon_{xx}=\varepsilon_{yy}$) strain on monolayer MoS$_{2}$ NMOS and PMOS FETs.
Ghosh, Ram Krishna, Mahapatra, Santanu, Sengupta, Amretashis   +2 more
core   +1 more source

Design of Ka-band thin film power divider based on multi-line gap coupling

Dianzi Jishu Yingyong
The traditional power divider structure is difficult to meet the requirements of high frequency and miniaturization of microwave systems due to obvious high-frequency crosstalk and large volume of impedance conversion lines.
Xu Muhua, Zhou Yujin, Li Shuaishuai, Gu Jiangchuan, Zhou Jun, Shen Ya   +5 more
doaj   +1 more source

A Meliorated Multi-Frequency Band Pyroelectric Sensor

Sensors, 2015
This article proposes a meliorated multi-frequency band pyroelectric sensor for detecting subjects with various velocities, namely extending the sensing frequency under good performance from electrical signals. A tactic, gradually increasing thickness of
Chun-Ching Hsiao, Sheng-Yi Liu, An-Shen Siao   +2 more
doaj   +1 more source