Results 31 to 40 of about 836 (216)
Radiation Analysis and Characteristics of Conformal Reflectarray Antennas
International Journal of Antennas and Propagation, 2012 This paper investigates the feasibility of designing reflectarray antennas on conformal surfaces. A generalized analysis approach is presented that can be applied to compute the radiation performance of conformal reflectarray antennas.
Payam Nayeri +2 more
doaj +1 more source
IEEE Access, 2022 Radar-based algorithms for electromagnetic (EM) imaging are developed based on the assumption that EM has a local planar wave front inside the imaging domain.
Azin S. Janani +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley +1 more source
Comparison Analysis of Single Loop Resonator Based Miniaturized Triple-Band Planar Monopole Antennas
International Journal of Antennas and Propagation, 2015 We systemically analyze and discuss a group of miniaturized triple-band planar monopole antennas by integrating with a single loop resonator (SLR) as part of the radiation patch.
Kaimin Wu +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
wiley +1 more source
Square planar monopole antenna [PDF]
IEE National Conference on Antennas and Propagation, 1999 A broadband square monopole antenna is investigated, showing a constant radiation pattern over the impedance bandwidth. A simple formula for the frequency corresponding to the lower edge of the impedance bandwidth, which has an accuracy of ±8.5% over the frequency range 1 GHz to 6 GHz, is proposed. The effect of the feedgap distance is examined.
openaire +2 more sources
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Antenna design of temperature measurement system based on SAW temperature sensor
Dianzi Jishu Yingyong, 2018 In order to measure the junction temperature of power equipment, a novel strategy of temperature measurement based on surface acoustic wave passive wireless temperature sensor is designed. The antennas and the matching methods of antennas and sensors are
Qi Bensheng +3 more
doaj +1 more source
Miniaturization of palanar antennas based on metamaterials for 5G and WIMAX communications applications [PDF]
Journal of Electrical and Electronics Engineering, 2021 The objective of this work is the design and simulation of an antenna based on metamaterials in order to miniaturize the initial dimensions of the planar antennas. Metamaterials are on the rise in recent years.
BOUSALAH Fayza +2 more
doaj
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source