DocumentCode
819658
Title
Bandwidth of reflectarrays
Author
Pozar, D.M.
Author_Institution
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
Volume
39
Issue
21
fYear
2003
Firstpage
1490
Lastpage
1491
Abstract
It is shown that the dominant factor controlling reflectarray bandwidth is the bandwidth of the radiating element, and that the effect of non-constant path delays over the surface of the flat reflector has little significance unless the aperture is electrically very large and the f/D ratio is small. An example of a polarisation-twist reflectarray using aperture coupled elements with time delay lines is used to demonstrate this conclusion.
Keywords
antenna theory; delay lines; electromagnetic wave polarisation; microstrip antenna arrays; reflector antennas; aperture coupled elements; microstrip reflectarray; nonconstant path delays; polarisation-twist reflectarray; radiating element bandwidth; reflectarray bandwidth; time delay lines;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20030990
Filename
1242786
Link To Document