An hybrid formulation combining FDTD and TDPO

Bolzer, F. Le; Gillard, Raphaël; Citerne, J.; Hanna, Victor Fouad; Wong, M.F.

doi:10.1109/aps.1998.702107

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…And the magnetic fields on the Kichhoff Surface(KS) at the two former steps are needed when the Kirchhoff's Sufrace Integration Representation(KSIR) used to computing the fields on reflector in Ref. [6]. Thus, the hybrid FDTD-TDPO method in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…But the hybrid FDTD-TDPO method in Ref. [6] is the hybrid of serial FDTD method and serial TDPO method. And the magnetic fields on the Kichhoff Surface(KS) at the two former steps are needed when the Kirchhoff's Sufrace Integration Representation(KSIR) used to computing the fields on reflector in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The results of the current distribution method are more accurate than those of the aperture distribution method, because the current distribution method is based on the reflector's induced currents while the apture-field method on the fields of the reflector apture. Considering the reflectors are the electrically large size targets while their feeds are only wavelength magnitudes, the hybrid method of Moment Method and Physical Optics(MOM-PO) and the hybrid method of Finite-Difference Time-Domain and Time-Domain Phsical Optics(FDTD-TDPO) are developed based on the current distribution method [5] [6] . In fact, MOM-PO method, which has been used in Feko software, is a frequency-domain method.…”

Section: Introductionmentioning

confidence: 99%

“…Magnetic field computing at point Q on reflector using KSIR According to KSIR in Ref. [6], the magnetic field on the illumination surface of reflector can be expressed as `…”

Section: A Introduction Of New Process Groupmentioning

confidence: 99%

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Hybrid PFDTD-PTDPO method for computing transient far-fields of single reflector

Zhu

Wang

Chen

et al. 2012

2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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A hybrid method combining parallelized finite-difference time-domain (PFDTD) method and parallelized time-domain physical optics (PTDPO) method is presented for computing the radiation fields of the large single reflector, which can not be simulated by one time-domain method. Two process groups for parallel computing are firstly set up, one is for PFDTD computing and the other is for PTDPO computing. No magnetic fields should be saved at every timestep when the Kirchhoff's Sufrace Integration Representation(KSIR) is used to computing the magnetic fields on the reflector. The radiation fields of single reflector antenna with dipole source show the results near the axis are agreed well with those by using PFDTD method and the same as those obtained by FDTD-TDPO method. The hybrid method has the ability of simulating large single reflector with hundreds of wavelengths, including the reflector's feed is offset.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Magnetic field computing at point Q on reflector using KSIR According to KSIR in Ref. [6], the magnetic field on the illumination surface of reflector can be expressed as `…”

Section: A Introduction Of New Process Groupmentioning

confidence: 99%

See 2 more Smart Citations

Hybrid PFDTD-PTDPO method for computing transient far-fields of single reflector

Zhu

Wang

Chen

et al. 2012

2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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“…The development of a hybrid scheme with all its steps realized in time domain is of interest. Such a hybrid scheme combining the Finite-Difference Time-Domain (FDTD) method [4] with Time Domain Physical Optics [5] (TDPO) is considered and the radiation of a monopole antenna mounted on a large but finite size PEC plate is determined in [6]. The FDTD and TDPO are applied to treat two separate parts, monopole and plate, respectively, in this problem.…”

Section: Introductionmentioning

confidence: 99%

FDTD/Tdpo Hybrid Approach for Analysis of the Em Scattering of Combinative Objects

Liu¹,

Ge²,

Wei³

2007

PIER

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Abstract-A time-domain hybrid approach that combines the FiniteDifference Time-Domain (FDTD) method with Time Domain Physical Optics (TDPO) is presented. The approach can be applied to the analysis of the backscattering of combinative objects including a SmallSize structure (SS) and a Large-Size structure (LS) with respect to the wavelength of interest. When dealing with the coupling of SS to LS, the near-to-near field extrapolation technique based on Kirchhoff's surface integral representation is used and a sequential transfer method is developed. According to the time domain calculation sequence in FDTD, the contribution of SS to LS is transferred directly to far zone observation point. The sequential transfer method has some advantages in high efficiency and small amounts of computer memory. For far zone back scattering, the influence of LS onto SS can be obtained by using the reciprocity theorem. Finally, the validation and application examples are presented, demonstrating the accuracy and effectiveness of this approach.

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