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Dual-Polarized Multilayer L-Band Asymmetric Subarray with Truncated Electric Walls Separation for Airborne SAR Applications

Lorente Catalan, Diego and Limbach, Markus and Gabler, Bernd and Esteban González, Héctor and Boria Esbert, Vicente (2022) Dual-Polarized Multilayer L-Band Asymmetric Subarray with Truncated Electric Walls Separation for Airborne SAR Applications. European Microwave Week (EuMW), 2022-04-02 - 2022-04-07, London, UK.

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Abstract

A novel planar phased array of 5x4 multilayer dual polarized aperture coupled stacked patch elements, operating in L-band, with beam steering in elevation and excited with an asymmetric amplitude distribution in azimuth, is presented in this work. The proposed design exploits the restricted available antenna size (2.45λ0 x 1.97λ0) maximizing the number of array elements by means of an interelement spacing of 0.48λ0 and the use of truncated walls. The measurements of the manufactured prototype show an antenna bandwidth of almost 20%, polarization isolation greater than 23 dB and directivity values above 15 dB. Despite the close proximity among the array elements, the measured coupling levels between the feeding ports are lower than -20 dB for the center frequency of operation 1.325 GHz, which makes the proposed work suitable for airborne Synthetic Aperture Radar systems, where a high degree of integration is required

Item URL in elib:https://elib.dlr.de/144521/
Document Type:Conference or Workshop Item (Speech)
Title:Dual-Polarized Multilayer L-Band Asymmetric Subarray with Truncated Electric Walls Separation for Airborne SAR Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lorente Catalan, DiegoDiego.LorenteCatalan (at) dlr.dehttps://orcid.org/0000-0002-7905-1294
Limbach, MarkusMarkus.Limbach (at) dlr.dehttps://orcid.org/0000-0003-3686-5535
Gabler, BerndBernd.Gabler (at) dlr.dehttps://orcid.org/0000-0003-1477-1829
Esteban González, Héctorhesteban (at) dcom.upv.eshttps://orcid.org/0000-0002-5936-658X
Boria Esbert, Vicentevboria (at) dcom.upv.eshttps://orcid.org/0000-0001-7150-9785
Date:2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:planar phased array, dual-polarized aperture coupled stacked patch antenna, truncated walls, airborne SAR.
Event Title:European Microwave Week (EuMW)
Event Location:London, UK
Event Type:international Conference
Event Dates:2022-04-02 - 2022-04-07
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Aircraft SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > SAR Technology
Deposited By: Lorente Catalan, Diego
Deposited On:13 Oct 2021 08:01
Last Modified:08 Mar 2022 06:07

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