Results 11 to 20 of about 15,530 (235)

Advancements in Passive Wireless Sensors, Materials, Devices, and Applications

Sensors, 2023
In recent years, passive wireless sensors have been studied for various infrastructure sectors, making them a research and development focus. While substantial evidence already supports their viability, further effort is needed to understand their ...
Denghui He, Yuanhui Cui, Fangchao Ming, Weiping Wu   +3 more
doaj   +1 more source

Wireless chipless passive microfluidic temperature sensor [PDF]

2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013
Autonomous wireless sensors are a key technology for “Ambiant Intelligence”. For several years, chipless-electromagnetics sensors are studied to overcome the limitations of other passive sensors like low interrogation distance. In this paper we present a new concept of passive temperature sensor based on the electromagnetic coupling between an RF ...
Debourg, Émilie, Rifai, Ayoub, Bouaziz, Sofiene, Traille, Anya, Pons, Patrick, Aubert, Hervé, Tentzeris, Manos   +6 more
openaire   +2 more sources

A survey on reconfigurable intelligent surfaces: Wireless communication perspective

IET Communications, 2023
Using reconfigurable intelligent surfaces (RISs) to improve the coverage and the data rate of future wireless networks is a viable option. These surfaces are constituted of a significant number of passive and nearly passive components that interact with ...
Saber Hassouna, Muhammad Ali Jamshed, James Rains, Jalil ur Rehman Kazim, Masood Ur Rehman, Mohammad Abualhayja, Lina Mohjazi, Tei Jun Cui, Muhammad Ali Imran, Qammer H. Abbasi   +9 more
doaj   +1 more source

Monitoring Passive Wireless Devices

International Journal of Wireless Information Networks, 2021
Abstract This study suggests using a user-initiated detecting and data gathering from power-limited and even passive wireless devices, such as passive RFID tags, wireless sensor networks (WSNs), and Internet of Things (IoT) devices, that either power limitation or poor cellular coverage prevents them from communicating directly with wireless ...
openaire   +1 more source

A Wireless Passive Pressure Microsensor Fabricated in HTCC MEMS Technology for Harsh Environments

Sensors, 2013
A wireless passive high-temperature pressure sensor without evacuation channel fabricated in high-temperature co-fired ceramics (HTCC) technology is proposed. The properties of the HTCC material ensure the sensor can be applied in harsh environments. The
Mingliang Yang, Xiansheng Zhang, Liqiong Ding, Chen Li, Wendong Zhang, Li Qin, Jijun Xiong, Hao Kang, Qiulin Tan   +8 more
doaj   +1 more source

A Bulk Acoustic Wave Strain Sensor for Near-Field Passive Wireless Sensing

Sensors, 2023
Near-field passive wireless sensors can realize non-contact strain measurement, so these sensors have extensive applications in structural health monitoring. However, these sensors suffer from low stability and short wireless sensing distance. This paper
Xiyue Zou, Li Wen, Bin Hu
doaj   +1 more source

A Flexible Wireless Dielectric Sensor for Noninvasive Fluid Monitoring

Sensors, 2019
A flexible wireless dielectric sensor is presented here for noninvasively monitoring the permittivity and conductivity of fluids, based on resistor−inductor−capacitor (RLC) resonant circuit and capacitively coupled contactless conductivity ...
Heng-Tian Zhu, Ye Chen, Yi-Feng Xiong, Fei Xu, Yan-Qing Lu   +4 more
doaj   +1 more source

Wireless Sensing for Monitoring of Coal Gangue Mixing Based on PT Symmetry

IEEE Access, 2022
The challenge in using fully mechanized caving mining technology for thick coal seam mining is monitoring the mixing ratio of coal gangue during the top coal caving process.
Haoyan Xi, Yong Dong, Lei Zhang, Yanhong Liu, Xiaoqiang Su, Caixia Feng, Feng Zang, Lijuan Dong, Yunlong Shi   +8 more
doaj   +1 more source

High-Temperature Dielectric Properties of Aluminum Nitride Ceramic for Wireless Passive Sensing Applications

Sensors, 2015
The accurate characterization of the temperature-dependent permittivity of aluminum nitride (AlN) ceramic is quite critical to the application of wireless passive sensors for harsh environments.
Jun Liu, Yukun Yuan, Zhong Ren, Qiulin Tan, Jijun Xiong   +4 more
doaj   +1 more source

Electromagnetic Transduction for Wireless Passive Sensors

Procedia Engineering, 2012
AbstractWireless sensors market is growing very fast these last years tanks to the availability of cheap, small and efficient micro–sensors, batteries, analog and RF circuits, and to the presence of standardized communication protocols. Even if these active sensors are very attractive for a lot of applications, they suffer from weak energy autonomy and
Pons, Patrick, Aubert, Hervé, Menini, Philippe, Tentzeris, Manos   +3 more
openaire   +3 more sources