Results 41 to 50 of about 61,579 (120)

Half‐Wavelength Uncertainty Compensated Accurate Estimation of Dielectric Constant of Low‐Loss Dielectrics at GHz Frequencies

IET Microwaves, Antennas & Propagation
The presented paper addresses the divergence issue of Nicholson–Ross–Weir (NRW) algorithm encountered during the electrical characterisation of half‐wavelength or thicker low‐loss dielectric materials.
Virendra S. Chauhan
doaj   +1 more source

Research on dual-polarisation printed dipole antenna for spherical near-field measurements

The Journal of Engineering, 2019
Here a dual-polarisation printed dipole antenna for spherical near-field measurements is proposed. The printed dipole employs double-layered structure to obtain low cross-polarisation and uses irregular patch to get wide bandwidth.
Pei Zheng, JiaQi Liu, ShangYue Wang, Ran Zhang, Hu Fan   +4 more
doaj   +1 more source

Validation of a Low-Cost Open-Ended Coaxial Probe Setup for Broadband Permittivity Measurements up to 6 GHz

Sensors
This work presents the validation of a low-cost measurement system based on an open-ended coaxial SMA (SubMiniature version A) probe for the characterization of complex permittivity in the microwave frequency range.
Julia Arias-Rodríguez, Raúl Moreno-Merín, Andrea Martínez-Lozano, Germán Torregrosa-Penalva, Ernesto Ávila-Navarro   +4 more
doaj   +1 more source

Waveguide-Based Microwave S-Parameter Measurements for Machine Learning-Assisted Classification of Paprika Powder Adulterants

IEEE Access
Detecting food adulteration in powdered spices through visual inspection is difficult, and paprika powder is particularly susceptible to adulteration due to its fine particulate structure and intense color. This study proposes a waveguide-based microwave
Mustafa Alptekin Engin
doaj   +1 more source

Low Cost, High Performance, 16-Channel Microwave Measurement System for Tomographic Applications. [PDF]

Sensors (Basel), 2020
Meaney P, Hartov A, Raynolds T, Davis C, Richter S, Schoenberger F, Geimer S, Paulsen K.   +7 more
europepmc   +1 more source

Experimental study on differential diagnosis of cerebral hemorrhagic and ischemic stroke based on microwave measurement. [PDF]

Technol Health Care, 2020
Wang F, Zhang H, Bao J, Li H, Peng W, Xu J, Yang J, Zhuang W, Ning X, Xu L, Qiao L, Qin M, Chen M.   +12 more
europepmc   +1 more source

Recent Advances in Metasurfaces: From THz Biosensing to Microwave Wireless Communications

Research
In recent years, important progress has been made in the field of biosensing and wireless communications by using metamaterials and metasurfaces. These technologies enable efficient manipulation of electromagnetic waves through judiciously designed ...
Yue Wang, Xiang Zhang, Yuxiang Wang, Yunfei Liu, Jiaxue Li, Xiangdong Chen, Zijian Cui, Shah Nawaz Burokur, Jingdi Zhang, Xiaoguang Zhao, Kuang Zhang, Zheng You   +11 more
doaj   +1 more source

A Quasi-Isotropic Probe for High-Power Microwave Field Measurement

Sensors
In the paper, a new design of a quasi-isotropic antenna for high-power electromagnetic (EM) field measurement is presented, along with its investigation into suitability.
Roman Kubacki, Dariusz Laskowski, Rafał Białek, Marek Kuchta   +3 more
doaj   +1 more source

Noncontact estimation of the onset of ice accretion in turbofan stators

IET Science, Measurement & Technology
The problem of crystal ice formation inside aircraft turbine engines is well‐documented, and poses a significant risk to safety. The problem is not only one of power loss in flight, but the very real possibility that a flame‐out event could occur due to ...
Khalid Saleh, John Leis, David Buttsworth   +2 more
doaj   +1 more source

Microwave measurement of giant unilamellar vesicles in aqueous solution. [PDF]

Sci Rep, 2018
Cui Y, Delaney WF, Darroudi T, Wang P.
europepmc   +1 more source