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Hardware-Implemented Calibration Algorithms for Antenna Arrays

Winterstein, Andreas and Dreher, Achim (2013) Hardware-Implemented Calibration Algorithms for Antenna Arrays. In: IEEE International Symposium on Phased Array Systems and Technology, pp. 428-433. 2013 IEEE International Symposium on Phased Array Systems & Technology, 15.-18. Okt. 2013, Boston, USA.

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Abstract

An adaptive calibration technique based on the least mean squares (LMS) algorithm is presented which does not rely on integrated calibration networks and is therefore suitable for e.g. array fed reflector antenna systems. Using hardware-implemented algorithms, makes the calibration real-time capable and independent of external computation. Possibilities to enhance the LMS by step-size controlling techniques are introduced and compared by simulation, regarding their adaption speed. The work focuses on the transition of the presented algorithms towards digital hardware, especially FPGAs. The implementation feasibility of the proposed techniques is assessed and timing considerations as well as resource-effective realization are discussed. Suitable algorithms are selected and their implementation on an FPGA is described. Differences to simulation are outlined and optimization through pipelining is explained. The performance of the realized algorithms is evaluated on a Ka-band receiver system. Figures of merit are the adaption speed and the resulting SNR improvement. Step-size control offers slight performance improvements over basic LMS with fixed step-sizes. This comes at the expense of higher resource demand and implementation effort.

Item URL in elib:https://elib.dlr.de/80902/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Digital Object Identifier: 10.1109/ARRAY.2013.6731866
Title:Hardware-Implemented Calibration Algorithms for Antenna Arrays
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Winterstein, AndreasIKNUNSPECIFIED
Dreher, AchimIKNUNSPECIFIED
Date:18 October 2013
Journal or Publication Title:IEEE International Symposium on Phased Array Systems and Technology
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:pp. 428-433
Status:Published
Keywords:Array Antennas, Calibration, VHDL, Adaptive, FPGA
Event Title:2013 IEEE International Symposium on Phased Array Systems & Technology
Event Location:Boston, USA
Event Type:international Conference
Event Dates:15.-18. Okt. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Winterstein, Dipl.-Ing. Andreas
Deposited On:10 Mar 2014 09:12
Last Modified:31 Jul 2019 19:39

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