A finite-difference time-domain method for solving electromagnetic problems with bandpass-limited sources

The complex-envelope representation of bandpass-limited signals is used to formulate a bandpass-limited vector wave equation and a new finite-difference time-domain (FDTD) scheme that solves the bandpass-limited vector wave equation is presented. For narrow-band electromagnetic systems, this new met...

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Vydáno v:IEEE transactions on antennas and propagation Ročník 47; číslo 1; s. 9 - 15
Hlavní autoři: Pursel, J.D., Goggans, P.M.
Médium: Journal Article
Jazyk:angličtina
Vydáno: IEEE 01.01.1999
Témata:
Amplification
Antennas
Bandwidth
Electromagnetic scattering
Exact solutions
Finite difference method
Finite difference methods
Finite difference time domain method
Fourier transforms
Frequency
Mathematical analysis
Narrowband
Partial differential equations
Power line communications
Representations
Sampling methods
Time domain analysis
Wave equations
ISSN:0018-926X
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Shrnutí:The complex-envelope representation of bandpass-limited signals is used to formulate a bandpass-limited vector wave equation and a new finite-difference time-domain (FDTD) scheme that solves the bandpass-limited vector wave equation is presented. For narrow-band electromagnetic systems, this new method allows the time step to be several orders of magnitude larger than current FDTD formulations while maintaining an amplification factor equal to one. Example results obtained by this method are presented and compared with analytic solutions.
Bibliografie:ObjectType-Article-2
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ISSN:0018-926X
DOI:10.1109/8.752978