NDLI: Radiation and coupling studies of finite-size dual polarized vivaldi arrays using a domain decomposition FEM

Content Provider	IEEE Xplore Digital Library
Author	Paraschos, G.N. Kindt, R. Schaubert, D.H. Vouvakis, M.N.
Copyright Year	2008
Description	Author affiliation: ECE Dept., Univ. of Massachusetts, Amherst, MA (Paraschos, G.N.)
Abstract	Increasing functionality demands along with tightened constraints on RF-front-end size, weight and cost, has shifted architectures from multi-system to single yet multifunctional system designs. One of the significant challenges of such systems lays on the design of multifunctional radiators. UWB antenna apertures (arrays) can meet the demands of such designs because they offer large bandwidth, gain and scan volume and can be easily reconfigured by dynamically partitioning the aperture and controlling the element or sub-array excitation. Among others, dual-polarized tapered slot (Vivaldi) arrays are very attractive candidates because they offer large bandwidths (4:1 and upwards), scan volume (typical 50deg-elevation) and polarization diversity. The design of such arrays has been traditionally done using ldquoperiodic cellrdquo (infinite array) approximations in conjunction with full-wave (FEM or BEM) solvers, because large computational savings in terms of meshing and solution are achieved [1]. Infinite array approximation, although very successful for large arrays, it ignores truncation effects, that can have prominent affects at the lower bands of UWB antennas. Moreover, in a multifunctional aperture setting, periodic cell solutions can not be used to predict important design merits such as inter or intra array or sub-array coupling. Presently, the study of such affects has been done either using experiments [4] or supercomputer simulations using traditional full-wave methods eg. FEM, BEM and FDTD [2] The purpose of this paper is to firstly study the radiation behavior of isolated finite arrays under various excitations by quantifying truncations effects, and secondly to quantify inter-array coupling effects. Simulations will be done on commodity workstations via a rigorous yet efficient domain decomposition finite element (DD-FEM) method proposed in [3].
Starting Page	1
Ending Page	4
File Size	3011442
Page Count	4
File Format	PDF
ISBN	9781424420414
DOI	10.1109/APS.2008.4619542
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Couplings Antenna arrays Distance measurement Finite element methods Arrays Apertures Antennas
Content Type	Text
Resource Type	Article

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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
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Radiation and coupling studies of finite-size dual polarized vivaldi arrays using a domain decomposition FEM

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