DocumentCode :
3368070
Title :
Multi-Ring Unit Cells for Increased Phasing Range in Single-Layer Microstrip Reflectarrays
Author :
Sayidmarie, K.H. ; Bialkowski, M.E.
Author_Institution :
Coll. of Electron. Eng., Univ. of Mosul, Mosul
fYear :
2008
fDate :
4-6 March 2008
Firstpage :
163
Lastpage :
166
Abstract :
In this paper, we investigate planar antenna elements in the form of multi-rings of square and circular shapes, and explain the concept behind their increased phase range in a unit cell of a single layer microstrip printed reflectarray. It has been shown that the extended phase range can be obtained by utilizing similar in shape, but different in size, resonant elements. Using this principle it has been shown that two resonant elements forming a unit cell can double while three elements can almost triple the phasing range of a single resonant element unit cell, while the slope of the phase response remains almost unchanged. The issue of bandwidth improvement has not been considered. However, this can be achieved using thicker substrates similarly, as in the multi-layer approach.
Keywords :
microstrip antenna arrays; planar antenna arrays; reflector antennas; multiring unit cell; phase response; planar antenna element; resonant element; single-layer microstrip printed reflectarray; Antenna feeds; Bandwidth; Manufacturing; Microstrip antenna arrays; Microstrip antennas; RLC circuits; Reflector antennas; Resonance; Resonant frequency; Shape;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on
Conference_Location :
Chiba
Print_ISBN :
978-1-4244-1522-9
Type :
conf
DOI :
10.1109/IWAT.2008.4511312
Filename :
4511312
Link To Document :
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