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Calculation of antenna array far field impulse response using the finite‐difference time‐domain method
Author(s) -
Wu Chen,
Lee Jim
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21370
Subject(s) - finite difference time domain method , narrowband , optics , physics , radiation pattern , acoustics , impulse response , impulse (physics) , slot antenna , waveform , time domain , near and far field , dipole antenna , electronic engineering , antenna (radio) , radar , engineering , electrical engineering , telecommunications , computer science , mathematics , mathematical analysis , quantum mechanics , computer vision
The waveform in the radiation field of a radar antenna can be obtained by using the convolution of the transmitted signal and the antenna far‐field impulse response (AFFIR). In this paper, the finite‐difference time‐domain (FDTD) method is applied to calculate the AFFIR of an X‐band 54‐element waveguide slot array at different radiation angles using the excitation of a wideband Gaussian pulse. To demonstrate the usage of the far‐field impulse response, the waveforms in the radiation field of a narrowband Gaussian pulse are calculated at three different radiation angles by the convolution of the pulse and the waveguide slot‐array AFFIR. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 424–430, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21370