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Effects of ground plane truncations on the array behaviour of a smart antenna terminal with modular architecture

Meyer, F. and Thiel, M. and Dreher, A. and Schroth, A. (2005) Effects of ground plane truncations on the array behaviour of a smart antenna terminal with modular architecture. In: Proceedings ICAT 2005, pp. 431-434. International Conference on Antenna Technologies (ICAT 2005), Ahmedabad, India, February 21-24, 2005, Ahmedabad, India.

Full text not available from this repository.

Abstract

Modern communication systems should provide high data rates to enable e.g. user access to multimedia services. A Smart Antenna Terminal (SANTANA) with digital-beamforming technology is developed for these applications. The array geometry is based on a modular concept, i.e. the array is set up by 4 x 4 single microstrip-element modules. This enables the replacement of defective elements and also makes it easy to increase the directivity of the array by adding further modules. The gaps caused by the modular architecture and therefore the truncated groundplanes of the modules may influence the array behaviour. The modified array behaviour due to these gaps can be regarded as the superposition of the changed radiation patterns of the single elements. This paper describes the research on the influence of the array gaps on the single-element behaviour with respect to input impedance and far-field patterns. All possible gap positions are examined and simulations are presented, i.e. the application of the principle of sequential rotation in the array to achieve circular polarization with linear polarized single elements is taken into account. Furthermore the influence on 2 x 2 element subarrays is studied. Finally the simulation results are compared to measurements.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005, monograph_id=AAA 332,
Title:Effects of ground plane truncations on the array behaviour of a smart antenna terminal with modular architecture
Authors:
AuthorsInstitution or Email of Authors
Meyer, F.UNSPECIFIED
Thiel, M.UNSPECIFIED
Dreher, A.UNSPECIFIED
Schroth, A.UNSPECIFIED
Date:2005
Journal or Publication Title:Proceedings ICAT 2005
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 431-434
Status:Published
Keywords:Santana, Terminal Antenna, Digital Beamforming, Modular concept, truncated groundplane.
Event Title:International Conference on Antenna Technologies (ICAT 2005), Ahmedabad, India, February 21-24, 2005
Event Location:Ahmedabad, India
Event Type:international Conference
Organizer:Indian Space Research Organization, ASG, SAC
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 21:42

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