Bandwidth requirement for suppression of grating lobes in ultrawideband antenna arrays

2.50
Hdl Handle:
http://hdl.handle.net/10547/274568
Title:
Bandwidth requirement for suppression of grating lobes in ultrawideband antenna arrays
Authors:
Sipal, Vit; Edwards, David J.; Allen, Ben
Abstract:
Sparse ultrawideband antenna arrays suppress the grating lobes due to the fact that the duration of pulses processed by individual antenna elements is too short to constructively superpose them in the time domain. Such arrays represent an attractive option for design of many low-comlexity low-cost ultrawideband systems, where narrow beamwidth is achieved by increase of element spacing. This paper empirically explores the minimum bandwidth required for suppression of the grating lobes. It is found that the relative bandwidth required to suppress grating lobes is independent on the centre frequency, element spacing, and number of elements. There is a weak dependency of the bandwidth on the type of the pulse used, but the general conclusion is that the relative bandwidth has to exceed 100% in order to suppress the grating lobes. It is, however, noted that whilst sparse array with a low number of antenna elements can suppress the grating lobes and posses a narrow beam, the compromise for this feature is a reduction of the level of spatial filtering between the main lobe and other directions, when compared to arrays where grating lobes are suppressed by dense spacing.
Affiliation:
Department of Engineering Science, University of Oxford
Citation:
Sipal, V., Edwards, D., Allen, B. (2012) 'Bandwidth requirement for suppression of grating lobes in ultrawideband antenna arrays', Ultra-Wideband (ICUWB), 2012 IEEE International Conference on: 236-240 Syracuse, NY
Publisher:
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date:
Sep-2012
URI:
http://hdl.handle.net/10547/274568
DOI:
10.1109/ICUWB.2012.6340438
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6340438
Type:
Conference papers, meetings and proceedings
Language:
en
Appears in Collections:
Centre for Wireless Research (CWR)

Full metadata record

DC FieldValue Language
dc.contributor.authorSipal, Viten_GB
dc.contributor.authorEdwards, David J.en_GB
dc.contributor.authorAllen, Benen_GB
dc.date.accessioned2013-03-21T14:01:32Z-
dc.date.available2013-03-21T14:01:32Z-
dc.date.issued2012-09-
dc.identifier.citationSipal, V., Edwards, D., Allen, B. (2012) 'Bandwidth requirement for suppression of grating lobes in ultrawideband antenna arrays', Ultra-Wideband (ICUWB), 2012 IEEE International Conference on: 236-240 Syracuse, NYen_GB
dc.identifier.doi10.1109/ICUWB.2012.6340438-
dc.identifier.urihttp://hdl.handle.net/10547/274568-
dc.description.abstractSparse ultrawideband antenna arrays suppress the grating lobes due to the fact that the duration of pulses processed by individual antenna elements is too short to constructively superpose them in the time domain. Such arrays represent an attractive option for design of many low-comlexity low-cost ultrawideband systems, where narrow beamwidth is achieved by increase of element spacing. This paper empirically explores the minimum bandwidth required for suppression of the grating lobes. It is found that the relative bandwidth required to suppress grating lobes is independent on the centre frequency, element spacing, and number of elements. There is a weak dependency of the bandwidth on the type of the pulse used, but the general conclusion is that the relative bandwidth has to exceed 100% in order to suppress the grating lobes. It is, however, noted that whilst sparse array with a low number of antenna elements can suppress the grating lobes and posses a narrow beam, the compromise for this feature is a reduction of the level of spatial filtering between the main lobe and other directions, when compared to arrays where grating lobes are suppressed by dense spacing.en_GB
dc.language.isoenen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen_GB
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6340438en_GB
dc.subjectantenna arraysen_GB
dc.subjectfrequency modulationen_GB
dc.subjectgratingsen_GB
dc.subjectnarrowbanden_GB
dc.subjectultra wideband antennasen_GB
dc.subjectultrawideband (UWB)en_GB
dc.titleBandwidth requirement for suppression of grating lobes in ultrawideband antenna arraysen
dc.typeConference papers, meetings and proceedingsen
dc.contributor.departmentDepartment of Engineering Science, University of Oxforden_GB
All Items in UOBREP are protected by copyright, with all rights reserved, unless otherwise indicated.