Investigations into phase characteristics of a single-layer reflectarray employing patch or ring elements of variable size

Bialkowski, M. E. and Sayidmarie, K. H. (2008) Investigations into phase characteristics of a single-layer reflectarray employing patch or ring elements of variable size. IEEE Transactions on Antennas and Propagation, 56 11: 3366-3372. doi:10.1109/TAP.2008.2005470


Author Bialkowski, M. E.
Sayidmarie, K. H.
Title Investigations into phase characteristics of a single-layer reflectarray employing patch or ring elements of variable size
Journal name IEEE Transactions on Antennas and Propagation   Check publisher's open access policy
ISSN 0018-926X
Publication date 2008-11-01
Sub-type Article (original research)
DOI 10.1109/TAP.2008.2005470
Open Access Status Not yet assessed
Volume 56
Issue 11
Start page 3366
End page 3372
Total pages 7
Editor T. S. Bird
Place of publication New York
Publisher Institute of Electrical and Electronics Engineer
Language eng
Subject 100501 Antennas and Propagation
869999 Manufacturing not elsewhere classified
C1
Abstract The paper reports on investigations into phase characteristic of a unit cell of a single-layer microstrip reflectarray, which includes patch or ring elements of variable size. The aim is to have a smaller gradient (slower slope) of the reflected wave phase as a function of the elements' size to achieve a wider operational bandwidth and smaller susceptibility to manufacturing errors. The results obtained for single resonance elements demonstrate that a slower slope can be achieved using thicker substrates at the expense of an inadequate phase range of less than 300deg. This inadequate phase range leads to the reflectarray elements phase errors, which reduce its directivity. To overcome this problem the use of multiresonance multiring elements is postulated. It is shown that square and circular shaped multiple rings printed on a thick substrate can offer a slower phase slope and the phase range exceeding 360deg. The achieved slopes and ranges of double rings are comparable with those of double stacked patches printed on the equivalent low permittivity dielectric substrate. Choosing suitable dimensions of double-ring elements, the phase characteristic can be made approximately a linear function of their size.
Keyword Engineering, Electrical & Electronic
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Sat, 11 Apr 2009, 03:09:21 EST by Donna Clark on behalf of School of Information Technol and Elec Engineering