Results 91 to 100 of about 139,401 (323)
, 2021 We designed the wire monopole antenna bent at three points by applying a machine learning technique to achieve a good impedance matching characteristic.
Yong-Hwa Kim +2 more
core +1 more source
Italian National Conference on SensorsThis paper investigates the feasibility of harvesting Radio Frequency (RF) energy from the Wi-Fi frequency band to power low-power Internet-of-Things (IoT) devices.
Ashraf Ali +4 more
semanticscholar +1 more source
Design of L-Shaped Open-Slot Antenna Used in UAV Airborne Communication System
International Journal of Antennas and Propagation, 2018 According to the communication demands of communication system used in the UAV (Unmanned Aerial Vehicle) communication system, a ladder-shaped open-slotted antenna design is presented.
Zhang Wei, Yang Junfeng
doaj +1 more source
Optimization of Piezoelectric Flexible Ultrasonic Sensors Based on Backing Layer Matching [PDF]
Zhengzhou Daxue xuebao. Gongxue banEven with the advantages of small size, light weight, and easy matrixing, flexible ultrasonic sensors based on polyvinylidene fluoride (PVDF) piezoelectric film are susceptible to back clutter and impedance mismatching, resulting in a complex frequency
YU Yongjie +3 more
doaj +1 more source
Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures
Advanced Engineering Materials, EarlyView.We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann +2 more
wiley +1 more source
An Automatic Impedance Matching System
, 1986 In systems where signals are transmitted from a source to a load, the impedance of the source can be matched to the impedance of the load. Impedance matching, in both the mechanical and the electrical sciences, has many benefits. In the electrical sense,
Eash, Matthew G.
core
Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)
Advanced Engineering Materials, EarlyView.Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho +8 more
wiley +1 more source
Image reconstruction and bladder stimulation using electrical impedance tomography
Impedance tomography (EIT) is an imaging technique that harnesses differences in electrical conductivity to visualize the interior of objects. Despite limitations such as low resolution and nonlinearity of current distribution, its potential in medicine ...
Justyna Chałdaś - Majdańska +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley +1 more source
On Impedance Matching in a Power-Line-Communication System
, 2016 Impedance matching plays an important role in a power-line-communication system. We investigate the effect on the signal-to-noise ratio at the receiver and on the system capacity of three different impedance matching criteria at the transmitter, assuming
Tonello, Andrea, De Piante, Marco
core +1 more source