Results 211 to 220 of about 16,196 (251)
Some of the next articles are maybe not open access.
Electrical Impedance Matching Between Piezoelectric Transducer and Power Amplifier
IEEE Sensors Journal, 2020Electrical impedance matching network (EIMN) is important for the piezoelectric transducer to transmit high-power acoustic signal over a wide bandwidth. Different from the impedance matching between transducers and interface devices with a fixed impedance of $50\Omega $ , this paper presents a novel method of designing an EIMN between transducer ...
Hanyun Zhou, S H Huang
exaly +2 more sources
Electrical impedance matching based on piezoelectric ceramics for energy harvesting application
Materials Technology, 2020Piezoelectric energy harvesting is one of the promising energy sources for wireless sensor networks and integrated devices.
Jin An Sam Oh, Tian Wu, Qingping Wang
exaly +2 more sources
Applied Energy, 2020
Abstract Based on the definition of numerical-type equivalent thermoelectric parameters through developing a 1D self-consistent numerical method, this paper established a novel coupled electrical-thermal impedance matching (CETIM) model for prediction of the maximum output power and the highest conversion efficiency of thermoelectric generator (TEG).
Zhi-Zhu He
exaly +2 more sources
Abstract Based on the definition of numerical-type equivalent thermoelectric parameters through developing a 1D self-consistent numerical method, this paper established a novel coupled electrical-thermal impedance matching (CETIM) model for prediction of the maximum output power and the highest conversion efficiency of thermoelectric generator (TEG).
Zhi-Zhu He
exaly +2 more sources
Optimized Transmission Electrical Broadband Impedance Matching for PolyCMUT
2022 IEEE International Ultrasonics Symposium (IUS), 2022Robert Rohling, Edmond Cretu
exaly +2 more sources
A Tunable Electrical Impedance Matching System for Dual-Frequency Transducers
2024 17th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI)Zhitian Shen, Yaoyao Cui
exaly +2 more sources
Electrical Impedance Matching of PZT NanoGenerators
Volume 4: 22nd Design for Manufacturing and the Life Cycle Conference; 11th International Conference on Micro- and Nanosystems, 2017PZT nanofibers are piezoelectric and can produce a relatively high electrical output under strain that is useful for self-powered nanogenerators. To obtain maximum power output from these devices, their internal impedance needs to be matched with their applicable load impedance. Electrical impedance measurements of PZT nanofibers were performed using a
Richard Galos +3 more
openaire +1 more source
An electrically small impedance-matched microstrip antenna design
IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313), 2003In traditional antenna design, a rule of thumb is that an impedance-matched antenna has to be wavelength compatible in size. It is not possible to design an electrically small antenna with matched impedance. In our previous studies, it was found that the operating frequency of a patch antenna could be reduced to 1/3 or even 1/4 of the original ...
M.C. Liang +3 more
openaire +1 more source
Non-Foster impedance matching of electrically small antennas
2010 IEEE Antennas and Propagation Society International Symposium, 2010When the size of an antenna is electrically small, the antenna is neither efficient nor a good radiator because most of the input power is stored in the reactive near-field region and little power is radiated in the far-field region. As demonstrated in [1]- [2], the radiation quality factor of small antennas is definitely high.
null Keum-Su Song, R G Rojas
openaire +1 more source
Non-Foster Impedance Matching of Electrically-Small Antennas
IEEE Transactions on Antennas and Propagation, 2009Electrically-small antennas present high-Q impedances characterized by large reactances and small radiation resistances. For such antennas, the effectiveness of passive matching is severely limited by gain-bandwidth theory, which predicts narrow bandwidths and/or poor gain.
S.E. Sussman-Fort, R.M. Rudish
openaire +1 more source
A design methodology for impedance-matched Electrically Small parasitic superdirective arrays
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015This paper presents a method for designing impedance-matched parasitic superdirective Electrically Small Antenna (ESA) arrays. The proposed method uses the current excitation coefficients for calculating the required loads for the parasitic elements. The proposed method is validated via the design of a parasitic two-element superdirective ESA.
Haskou, Abdullah +2 more
openaire +1 more source