UScholar Works
 
Filters: Collection: "ir_uspace" Subject: "Finite-difference time-domain"
1 - 25 of 11
Number of results to display per page
CreatorTitleDescriptionSubjectDate
1 Furse, Cynthia M.; Lazzi, Gianluca; Gandhi, Om P.Comparison of FDTD computed and measured radiation patterns of commercial mobile telephones in presence of the human headIn this letter, finite-difference time-domain (FDTD) computed radiation patterns of mobile telephones are carefully compared with those measured in our laboratory. The question on the capability of the FDTD method to correctly predict the radiated electromagnetic fields of today's structurally comp...FDTD; Finite-difference time-domain; Mobile antennas1998-01-01
2 Furse, Cynthia M.; Gandhi, Om P.Computations of SAR distributions or two anatomically based models of the human head using CAD files of commercial telephones and the parallelized FDTD codeA method for importing data from computer-aided design (CAD) files for a mobile telephone into finite-difference time-domain (FDTD) simulation software is described. Although the FDTD method is well suited for the bio-electromagnetic simulations and has become the method of choice for most research...Specific absorption rates; SAR; CAD files; FDTD; Finite-difference time-domain1998-01-01
3 Furse, Cynthia M.; Cherkaev, Elena A.Cross-borehole delineation of a conductive ore deposit in a resistive host-experimental designThe finite-difference time-domain method is used for high-resolution full-wave analysis of cross-borehole electromagnetic surveys of buried nickel sulfide deposits. The method is validated against analytical methods for simple cases, but is shown to be a valuable tool for analysis of complicated ...Finite-difference time-domain; FDTD; Cross-borehole; Electromagnetic surveys; Nickel sulfide deposits; Conductive ores; Resistive host2001-01-01
4 Furse, Cynthia M.; Gandhi, Om P.Currents induced in the human body for exposure to ultrawideband electromagnetic pulsesThe frequency-dependent finite-difference time-domain [(FD)2TD] method is used to calculate internal electric fields and induced current densities in a 1.31-cm resolution anatomically-based model of the human body for exposure to ultrawideband vertically polarized electromagnetic pulses (EMP's). Fr...FDTD; Finite-difference time-domain; Ultrawideband electromagnetic pulses; Induced currents1997-01-01
5 Furse, Cynthia M.; Gandhi, Om P.; Lazzi, GianlucaElectromagnetic absorption in the human head and neck for mobile telephones at 835 and 1900 MHzWe have used the finite-difference time-domain method and a new millimeter-resolution anatomically based model of the human to study electromagnetic energy coupled to the head due to mobile telephones at 835 and 1900 MHz. Assuming reduced dimensions characteristic of today's mobile telephones, we h...Electromagnetic absorption; FDTD; Finite-difference time-domain; Specific absorption rates; SAR1996-01-01
6 Furse, Cynthia M.Faster than fourier: ultra-efficient time-to-frequency-domain conversions for FDTD simulationsThis tutorial compares several methods of converting from the time to the frequency domain for FDTD simulations. Applications include calculations of field or power distributions, antenna impedance, and radiation patterns. The traditional Fourier transform methods are compared to two methods based o...FDTD simulations; FDTD methods; Finite-difference time-domain; Computation time; Frequency domain analysis; Time domain analysis; Discrete Fourier transform2000-01-01
7 Furse, Cynthia M.; Gandhi, Om P.Improvements to the finite-difference time-domain method for calculating the radar cross section of a perfectly conducing targetThe finite-difference time-domain (FDTD) method has been used extensively to calculate scattering and absorption from both dielectric objects and perfectly conducting objects. Several improvements to the FDTD method for calculating the radar cross section (RCS) of a perfectly conducting target are p...Finite-difference time-domain; FDTD1990-01-01
8 Furse, Cynthia M.; Gandhi, Om P.Memory efficient method of calculating specific absorption rate in CW FDTD simulationsSpecific absorption rate (SAR) distributions in man models are often calculated using the finite-difference time-domain (FDTD) method. The traditional method of calculating SAR requires calculation and storage of the three electric field components in each cell and is therefore very time- and memor...Specific absorption rates; SAR; FDTD simulations; Finite-difference time-domain; Mass-normalized time-averaged energy distribution1996-05
9 Furse, Cynthia M.; Christensen, Douglas A.Problem and treatment of DC offsets in FDTD simulationsThis paper discusses the causes of and some solutions to the commonly observed problem of dc field offsets in finite-difference time-domain (FDTD) simulations. DC electric and magnetic field offsets are shown to be valid calculated responses of the modeled systems, resulting from interaction betwee...FDTD simulations; Finite-difference time-domain; DC offsets2000-01-01
10 Furse, Cynthia M.; Gandhi, Om P.Simple convolution procedure for calculating currents induced in the human body for exposure to electromagnetic pulsesThe finite-difference time-domain (FDTD) and frequency dependent finite difference time-domain (FD)2TD methods have been previously used to calculate internal electric (E) fields and induced currents for exposure of the anatomically based model of the human body to electromagnetic pulses (EMPs) and...Frequency dependent finite difference time-domain; Finite-difference time-domain; FDTD; Electric fields; Induced current; Electromagnetic pulses; Continuous wave sinusoids1994-07
11 Furse, Cynthia M.; Gandhi, Om P.Use of the frequency-dependent finite-difference time-domain method for induced current and SAR calculations for a heterogeneous model of the human bodyThis paper describes the use of the previously for mutated Frequency-Dependent Finite-Difference Time-Domain ((FD)2TD) method for analysis of an anatomically based heterogeneous man model exposed to ultra-wide-band electromagnetic pulse sources. The human tissues' electrical permittivities, ε*(ω),...Finite-difference time-domain; FDTD; Ultrawideband electromagnetic pulses; Induced currents; Mass-normalized; Energy distribution; Specific absorption rates; SAR1994-01-01
1 - 25 of 11