Calculation of the resonant frequency of a rectangular dielectric resonator antenna using perturbation theory
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Computational Electronics"
DOI: 10.1007/s10825-018-1284-8
Abstract: A theoretical investigation is carried out using the perturbation method to calculate the resonant frequency of a horizontally and vertically perturbed rectangular dielectric resonator antenna (RDRA). The accuracy of the proposed method is validated with… read more here.
Keywords: using perturbation; rectangular dielectric; dielectric resonator; perturbation ... See more keywords
Low-temperature co-fired LiMnPO4–TiO2 ceramics with near-zero temperature coefficient of resonant frequency
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-017-7246-2
Abstract: The microwave dielectric properties and the microstructures of LiMnPO4-TiO2 composite ceramics prepared by solid-state reaction method have been investigated. The results show that the pure LiMnPO4 (LMP) ceramic can be sintered at 750 °C for 4 h… read more here.
Keywords: tio2; temperature; coefficient resonant; temperature coefficient ... See more keywords
Initial undamped resonant frequency of slender structures considering nonlinear geometric effects: the case of a 60.8 m-high mobile phone mast
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-016-0547-1
Abstract: In this study, an analytical approach based on the Rayleigh method is adopted to calculate the first resonant frequency of a 60.80 m-high mobile phone mast system, by considering the geometric stiffness, functions of the concentrated… read more here.
Keywords: phone mast; frequency; high mobile; mobile phone ... See more keywords
A dynamic solution for predicting resonant frequency of piston mode fluid oscillation in moonpools/narrow gaps
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Hydrodynamics"
DOI: 10.1007/s42241-019-0060-y
Abstract: The objective of this study is to develop a simple tool for predicting the resonant frequency of the piston mode wave oscillation in a moonpool or a narrow gap between twin floating barges. Based on… read more here.
Keywords: frequency; piston mode; oscillation; frequency piston ... See more keywords
Differentiating platinum coated brachytherapy seeds and gold fiducial markers with varying off-resonant frequency offsets.
Sign Up to like & getrecommendations! Published in 2019 at "Magnetic resonance imaging"
DOI: 10.1016/j.mri.2019.04.005
Abstract: PURPOSE To develop an off-resonant frequency filtered method to selectively differentiate between implanted gold fiducial markers and platinum coated brachytherapy seeds. MATERIALS AND METHODS The magnetic susceptibilities for gold fiducial markers and brachytherapy seeds differ… read more here.
Keywords: seed; fiducial markers; frequency; brachytherapy seeds ... See more keywords
Electrostatically driven long-microbeams for low frequency applications
Sign Up to like & getrecommendations! Published in 2018 at "Electronics Letters"
DOI: 10.1049/el.2017.4534
Abstract: This Letter presents the design, fabrication and characterisation of an array of electrostatically actuated clamped-clamped microbeams. A large bottom actuation electrode and long beams with lengths ranging from 1 to 3.4 mm are the major… read more here.
Keywords: long microbeams; frequency; driven long; resonant frequency ... See more keywords
Energy Analysis of the Resonant Frequency Shift Pattern Induced by Nonuniform Blockages in Pressurized Water Pipes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Hydraulic Engineering"
DOI: 10.1061/(asce)hy.1943-7900.0001607
Abstract: AbstractBlockages in urban water supply systems are commonly formed from various complicated physical, chemical, and biological processes; thus, they usually constrict randomly and nonuniformly alo... read more here.
Keywords: energy analysis; water; resonant frequency; frequency shift ... See more keywords
Tuning MEMS cantilever devices using photoresponsive polymers
Sign Up to like & getrecommendations! Published in 2019 at "Smart Materials and Structures"
DOI: 10.1088/1361-665x/aad013
Abstract: Microelectromechanical systems (MEMS) energy harvesting devices have had limited commercial success partly due to the frequency mismatch between the device and the vibration source. Tuning the cantilever device is one possible solution but developing a… read more here.
Keywords: resonant frequency; tuning mems; frequency; photoresponsive polymers ... See more keywords
Comparison of performances of flexible sensors on foil and paper for efficient bacterial concentration measurement
Sign Up to like & getrecommendations! Published in 2020 at "Sensor Review"
DOI: 10.1108/sr-04-2018-0082
Abstract: The purpose of this study was to develop flexible sensors for detection of different concentrations of bacteria, such as Pseudomonas aeruginosa and Staphylococcus aureus, in saline.,The sensors were fabricated using ink-jet printing technology and they… read more here.
Keywords: foil paper; performances flexible; comparison performances; resonant frequency ... See more keywords
Use of Supporting Post Width to Increase the CMUT’s Resonant Frequency
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3178990
Abstract: A new method is proposed to increase the resonant frequency of a Capacitive Micromachined Ultrasonic Transducer (CMUT) device while keeping the radii unchanged for devices fabricated by sacrificial release (SR) method. The resonant frequency of… read more here.
Keywords: post width; frequency; supporting post; resonant frequency ... See more keywords
Communication-Less Receiver-Side Resonant Frequency Tuning for Magnetically Coupled Wireless Power Transfer Systems
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3251987
Abstract: Compensating for deviations in the resonant frequency is crucial in magnetic resonance coupling wireless power transfer (WPT) systems. Thus, this study proposes a communication-less receiver-side resonant frequency-tuning scheme that compensates for the reactance in the… read more here.
Keywords: wireless power; frequency tuning; frequency; resonant frequency ... See more keywords