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On methods to estimate bandwidth performance for array antennas with ground plane
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-7269-5241
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2014 (English)In: 2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014, 2014Conference paper (Refereed)
Abstract [en]

Array antenna impedance bandwidth performance is a critical factor for antenna design, in particular for arrays in radar application and more recently for array antennas in communication systems. A priori methods to quantify bandwidth include stored energy-based estimates through the quality factor antenna Q, and sum-rule based estimates based on the antenna as a scattering object. A recently introduced, array figure of merit, uses a square window or walltype estimate on the return-loss to obtain bounds in terms of return-loss level, bandwidth, scan-range and unit-cell specific geometrical and material information, it is based on a fundamental physics result, linking bandwidth to essentially the thickness of the array. An alternative approach is based on the Bode-Fano theory, resulting in bandwidth measures in terms of one or several quality factors. Both methods apply both to single and multi-band array antennas. Here we present these methods and make a comparison between the two approaches.

Place, publisher, year, edition, pages
Keyword [en]
Antenna grounds, Bandwidth, Electric impedance, Power inductors, Radar antennas, Bandwidth performance, Critical factors, Figure of merits, Fundamental physics, Material information, Quality factors, Radar applications, Scattering objects, Antenna arrays
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-168860DOI: 10.1109/URSIGASS.2014.6929091ScopusID: 2-s2.0-84919723638ISBN: 9781467352253OAI: diva2:819844
31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014, 16 August 2014 through 23 August 2014

QC 20150611

Available from: 2015-06-11 Created: 2015-06-09 Last updated: 2015-06-11Bibliographically approved

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Jonsson, B. Lars G.Kolitsidas, Christos I.
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