NDLI: Ultra wideband spiral antenna

Content Provider	IEEE Xplore Digital Library
Author	Nicolaescu, Ioan Genderen, Piet van
Copyright Year	2006
Description	Author affiliation: International Research Center for Telecommunication-transmission and Radar, Mekelweg, 2628, Delft, The Netherlands (Genderen, Piet van) \|\| Military Technical Academy, 81-83 George Cosbuc Avenue, Bucharest, Romania (Nicolaescu, Ioan)
Abstract	This paper deals with the time delay removal of an Archimedean spiral antenna which operates from 400 MHz to 4845 MHz. As it is known, spiral antennas show a dispersive behavior, thus, in time domain, a ¿chirp¿ pulse will be displayed at the output. For time delay removal two procedures are investigated: the first one uses an error-term flow graph for the frequency signal as for Vector Network Analyzers while the second one supposes to place a reference metallic plate at a certain distance in order to identify the phase dispersion given by the antenna. In the second case the received signal is passed in time domain by applying an ifft, the multiple reflection are removed and the phase variation due to the time propagation is subtracted. After phase correction the time domain response as well as the side lobes level are decreased. The antenna system made up of two Archimedean spirals is employed by a stepped frequency continuous wave radar (SFCW) which works with a frequency step of 35 MHz.
Starting Page	1
Ending Page	6
File Size	666720
Page Count	6
File Format	PDF
ISBN	9789290929376
DOI	10.1109/EUCAP.2006.4584707
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-06
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Spirals Delay effects Signal processing Frequency Antennas and propagation Radar antennas Ultra wideband antennas Flow graphs Dispersion Ultra wideband technology
Content Type	Text
Resource Type	Article

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