NDLI: Antenna Physical Poles Extracted From Measured Backscattered Fields

Content Provider	IEEE Xplore Digital Library
Author	Sarrazin, F. Pouliguen, P. Sharaiha, A. Chauveau, J. Potier, P.
Copyright Year	1963
Abstract	This paper presents a new approach to extract the physical poles of antennas. The singularity expansion method (SEM) allows modeling the antenna backscattering using poles which are theoretically independent of the wave incident angle, making them useful for antenna identification. Nevertheless, only the physical poles respect this property while the spurious poles change for each incident angle. Indeed, we call the poles linked to the antenna itself as “physical” and the poles linked to anything but the antenna as “spurious”(excitation, noise, etc.). The goal of this paper is to highlight the method to define the optimal time windowing applied on the antenna backscattering in order to obtain the physical poles of the antenna. The approach is based on the window decreasing technique (WDT) and the window increasing technique. The SEM is applied on the backscattered field measured in the boresight direction of three antennas: 1) a narrowband patch antenna; 2) a wideband helix antenna; and 3) a UWB antenna. Using these poles to reconstruct the field backscattered in several directions, we show that the poles extracted from one direction with this new approach are relevant to reconstruct the backscattered field for any other directions. Moreover, we show that these poles can be extracted directly from these other directions.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	3963
Ending Page	3972
Page Count	10
File Size	2585554
File Format	PDF
ISSN	0018926X
Volume Number	63
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Patch antennas Damping Antenna measurements Resonant frequency Helical antennas Time factors window increasing technique Backscattered field antenna characterization complex natural resonance helix antenna matrix pencil method patch antenna poles singularity expansion method ultra wideband antenna window decreasing technique window increasing technique (WIT) Antenna characterization backscattered field complex natural resonance (CNR) matrix pencil method (MPM) singularity expansion method (SEM) window decreasing technique (WDT)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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