Results 1 to 10 of about 87,553 (311)

Improved Multilayered (Bi,Sc)O3-(Pb,Ti)O3 Piezoelectric Energy Harvesters Based on Impedance Matching Technique

open access: yesSensors, 2020
As a piezoelectric material, (Bi,Sc)O3-(Pb,Ti)O3 ceramics have been tested and analyzed for sensors and energy harvester applications owing to their relatively high Curie temperature and high piezoelectric coefficient. In this work, we prepared optimized
Bo Su Kim   +4 more
doaj   +1 more source

Design of a Wideband Inductively Coupled Loop Feed Patch Antenna for UHF RFID Tag [PDF]

open access: yes, 2015
A planar wideband patch antenna for ultra-high frequency (UHF) radio frequency identification (RFID) tag for metallic applications is presented in this research work.
Bashri, M. S. R.   +2 more
core   +2 more sources

Investigation on Wireless Link for Medical Telemetry Including Impedance Matching of Implanted Antennas

open access: yesSensors, 2021
The development of biomedical devices benefits patients by offering real-time healthcare. In particular, pacemakers have gained a great deal of attention because they offer opportunities for monitoring the patient’s vitals and biological statics in real ...
Ilkyu Kim   +3 more
doaj   +1 more source

Geometric Scattering in Robotic Telemanipulation [PDF]

open access: yes, 2002
In this paper, we study the interconnection of two robots, which are modeled as port-controlled Hamiltonian systems through a transmission line with time delay. There will be no analysis of the time delay, but its presence justifies the use of scattering
Mashke, Bernhard   +3 more
core   +5 more sources

Fully integrated CMOS power amplifier design using the distributed active-transformer architecture [PDF]

open access: yes, 2002
A novel on-chip impedance matching and power-combining method, the distributed active transformer is presented. It combines several low-voltage push-pull amplifiers efficiently with their outputs in series to produce a larger output power while ...
Aoki, Ichiro   +3 more
core   +1 more source

Modal analysis and nonlinear characterization of an airborne power ultrasonic transducer with rectangular plate radiator [PDF]

open access: yes, 2018
Some industrial processes like particle agglomeration or food dehydration among others can be enhanced by the use of power ultrasonic technologies.
Acosta, V.M.   +3 more
core   +1 more source

Study on frequency tracking method of ultrasonic scalpel based on impedance matching

open access: yesDianzi Jishu Yingyong, 2019
With the development of science and technology, ultrasonic scalpel is widely used in medical treatment. In practical application, in order to make the transducer of the ultrasonic scalpel convert electrical energy into mechanical energy as much as ...
Yang Lin   +5 more
doaj   +1 more source

Optimum values of electrical circuit for energy harvesting using a beam and piezoelectric elements

open access: yesMechanical Engineering Journal, 2017
This paper describes optimum values of an electrical circuit for energy harvesting using a beam and piezoelectric elements. Energy harvesting techniques recover energy from the environment. We target the energy harvesting methods that extract energy from
Keisuke YAMADA   +3 more
doaj   +1 more source

Active textile antennas in professional garments for sensing, localisation and communication [PDF]

open access: yes, 2014
New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna systems may serve as platforms for body-centric sensing, localisation, and wireless communication ...
Agneessens, Sam   +10 more
core   +2 more sources

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