NDLI: Multipath mitigation in pattern measurement of small directive antennas based on the singularity expansion method (SEM)

Content Provider	IEEE Xplore Digital Library
Author	Taeyoung Yang Davis, W.A. Stutzman, W.L.
Copyright Year	2009
Description	Author affiliation: Virginia Tech Antenna Group, Blacksburg, 24061, U.S.A. (Taeyoung Yang; Davis, W.A.; Stutzman, W.L.)
Abstract	Many antenna ranges are limited in operation by the effects of multipath propagation due to reflection from adjacent structures. Such structures include buildings, range walls, floors, and ceilings. Diffraction fences and absorber provide the classic methods for reducing these effects. With modern processing capabilities, new methods can be incorporated to reduce multipath effects. In this paper, we review the results of Davis and Licul's approach [1] that push the limits of an antenna range due to multipath from unavoidable adjacent scatterers. Their approach only considered boresight interaction. The radiation pattern of a 4 GHz Yagi-Uda antenna was measured inside an anechoic chamber with a metal plate present to introduce a multipath environment. A time gating approach based on the singularity expansion method (SEM) was used to mitigate the multipath effects and to estimate the radiation pattern in free space environment based on the boresight SEM poles. The results showed that some complex poles of a test antenna might not be excited strongly at certain angles, as with the use of boresight poles in the previous work. To resolve the problem, combined poles were extracted from multiple angles to remove the multipath effects and obtain non-distorted radiation patterns.
Starting Page	1
Ending Page	4
File Size	649774
Page Count	4
File Format	PDF
ISBN	9781424443956
DOI	10.1109/IWAT.2009.4906962
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Diffraction Buildings Scattering Directive antennas Antennas and propagation Reflector antennas Reflection Floors Antenna radiation patterns
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in