NDLI: Time domain analysis of pulse-excited reflector antennas-UAT approach

Content Provider	IEEE Xplore Digital Library
Author	Rego, C.G. Hasselmann, F.J.V.
Copyright Year	2001
Description	Author affiliation: Univ. Fed. de Minas Gerais, Belo Horizonte, Brazil (Rego, C.G.)
Abstract	Time domain versions of asymptotic high-frequency domain methods of reflector antenna analysis have recently been developed and applied to obtain their transient response. These include the time-domain uniform geometrical theory of diffraction (TD-UTD) (see Rousseau, P.R. and Pathak, P.H., 1995) and the time-domain physical optics (TDPO) (see Sun, E.Y. and Rusch, W.V.T., 1994). This implementation, together with the development of time-domain equivalent edge current (TD-EEC) corrections to TDPO, has been compared within the framework of reflector antennas illuminated by a pulsed source (see Rego, C.G. and Hasselmann, F.J.V., Proceedings of IEEE Antennas and Propagation Society International Symposium, p.2046-9, 2000). A time domain version of the uniform asymptotic theory of diffraction (TD-UAT) is introduced following an analytical transformation of its well known frequency domain counterpart. The TD-UAT is implemented to perform the calculation of the field scattered by a hyperbolic reflector illuminated by a spherical with a double-Gaussian pulse temporal behavior and its applicability is validated through comparison with results obtained from a reference solution consisting of a Fourier inversion of a frequency-domain method of moments (MoM) formulation. The applicability of the TD-UAT formulation to the analysis of a pulse-excited reflector antenna, illuminated by fields with a rapid spatial variation near its rim, is also ascertained by composing its implementation with those from TD-UTD with slope diffraction terms and from TDPO with TD-EEC corrections.
Starting Page	376
Ending Page	379
File Size	119999
Page Count	4
File Format	PDF
ISBN	0780370708
DOI	10.1109/APS.2001.959741
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Reflector antennas Optical pulses Physical theory of diffraction Frequency domain analysis Transient response Physical optics Sun Antennas and propagation Antennas and Propagation Society
Content Type	Text
Resource Type	Article

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