Filters: Collection: "ir_uspace" Subject: "FDTD"
1 - 25 of 17
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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Furse, Cynthia M.; Gandhi, Om P. | Calculation of electric fields and currents induced in a millimeter-resolution human model at 60 Hz using the FDTD method with a novel time-to-frequency-domain conversion | The finite-difference time-domain (FDTD) method has previously been used to calculate induced currents in anatomically based models of the human body at frequencies ranging from 20 to 915 MHz and resolutions down to 1.31 cm . Calculations at lower frequencies and higher resolutions have been preclu... | Finite-difference time-domain method; FDTD; Induced currents; Human body model | 1996 |
| 2 |
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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 head | In 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 antennas | 1998-01-01 |
| 3 |
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Furse, Cynthia M.; Gandhi, Om P. | Computations of SAR distributions for two anatomically-based models of the human head using CAD files of commercial telephones and the parallelized FDTD code | The Finite Difference Time Domain (FDTD) method is well suited for the computation of bio-electromagnetic effects and has become the method of choice for most researchers in this area. There does however remain some limitations on its use. Firstly the FDTD method requires large amounts of memory and... | Finite-difference time-domain method; FDTD; SAR distributions; CAD files | 1997 |
| 4 |
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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 code | A 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-domain | 1998-01-01 |
| 5 |
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Furse, Cynthia M.; Cherkaev, Elena A. | Cross-borehole delineation of a conductive ore deposit in a resistive host-experimental design | The 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 host | 2001-01-01 |
| 6 |
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Furse, Cynthia M.; Gandhi, Om P. | Currents induced in the human body for exposure to ultrawideband electromagnetic pulses | The 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 currents | 1997-01-01 |
| 7 |
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Furse, Cynthia M.; Lazzi, Gianluca; Gandhi, Om P. | Electrical energy absorption in the human head from a cellular telephone | The antenna of a cellular telephone in close proximity to the human head for a variety of time periods raises questions. This research uses finite-difference time-domain (FDTD) method to calculate the power deposition from a cellular telephone on a high-resolution model of a human head as measured b... | Finite-difference time-domain method; FDTD; Power deposition; Human head model; Electrical energy absorption; Specific absorption rate | 1996 |
| 8 |
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Furse, Cynthia M.; Gandhi, Om P.; Lazzi, Gianluca | Electromagnetic absorption in the human head and neck for mobile telephones at 835 and 1900 MHz | We 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; SAR | 1996-01-01 |
| 9 |
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Furse, Cynthia M. | Faster than fourier -- ultra-efficient time-to-frequency domain conversions for FDTD | Two highly efficient methods of computing magnitude and phase from time-domain data are demonstrated. These methods, based on solution of linear equations, are found to be equally accurate and more efficient than Fourier transform methods (DIT and FFT) for limited numbers of Frequencies. These metho... | Finite-difference time-domain method; FDTD; Fourier transform methods; Sine wave magnitude; Sine wave phase | 1998 |
| 10 |
 |
Furse, Cynthia M.; Gandhi, Om P.; Lazzi, Gianluca | FDTD computation of power deposition in the head for cellular telephones | The finite-difference time-domain method is used to calculate radiation pattern and specific absorption rate (SAR) in the human head due to cellular telephones. For realistic simulation of the ordinary positions of holding the phone, the ear of the model is pressed against the head, the head is tilt... | Finite-difference time-domain method; FDTD; Specific absorption rate; Radiation patterns; Human head model; Power deposition | 1996 |
| 11 |
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Furse, Cynthia M. | Impedance of a short dipole antenna in a magnetized plasma via a finite difference time domain model | The traditional analytical analysis of plasma probes requires the use of quasi-static approximations, while numerical methods require the use of an equivalent dispersive media, both producing a nontrivial analysis of the plasma environment. On the other hand, a few techniques that combine the plasm... | Antenna theory; finite-difference time-domain; FDTD; Plasma covered antennas; Plasma measurements | 2005-08 |
| 12 |
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Furse, Cynthia M.; Gandhi, Om P. | Improvements to the finite-difference time-domain method for calculating radar cross section of a perfectly conducting target | Abstract -The 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 ta... | Finite-difference time-domain method; FDTD; RCS; Perfectly conducting target | 1990-07 |
| 13 |
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Furse, Cynthia M.; Gandhi, Om P. | Improvements to the finite-difference time-domain method for calculating the radar cross section of a perfectly conducing target | The 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; FDTD | 1990-01-01 |
| 14 |
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Furse, Cynthia M. | Optimization of a buried microstrip antenna for simultaneous communication and sensing of soil moisture | Imbedded microstrip antennas have been previously demonstrated for use either as sensing elements or as components of a wireless communication system. This paper presents a method and dual use designs for simultaneous sensing of soil moisture and communication from the buried antenna to an external... | Finite-difference time domain; FDTD; Automatic sprinkler control systems | 2006-03 |
| 15 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Simple convolution procedure for calculating currents induced in the human body for exposure to electromagnetic pulses | The 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 sinusoids | 1994-07 |
| 16 |
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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 body | This 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; SAR | 1994-01-01 |
| 17 |
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Furse, Cynthia M.; Gandhi, Om P. | Why the DFT is faster than the FFT for FDTD time-to-frequency domain conversions | Although it is a time-domain method, the finite difference time-domain (FDTD) method has been used extensively for calculating frequency domain parameters such as specific absorption rate, radar cross-section, and S-parameters. When a broad frequency band is of interest, using a broad-band pulsed ... | Discrete Fourier transform; DFT; Fast Fourier transform; FFT; Finite-difference time-domain; FDTD; Frequency domain parameters | 1995-10 |
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