Title :
Effect of dielectric thickness on phase swing of a Ka-band microstrip reflectarray unit cell
Author :
Karnati, Kalyan ; Ebadi, Siamak ; Gong, Xun
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA
Abstract :
In this paper, effect of substrate thickness on the phase swing of a reflectarray unit cell is studied for the first time. Using waveguide simulator approach, it is shown that an increase in the substrate thickness results in smaller phase swing. Previous studies have shown that an increase in the thickness reduces the loss and increases the efficiency. However, this study explores the limit on the maximum allowable thickness of a substrate based on the desired phase swing. The concept is demonstrated at 32GHz (within Ka band) which is the frequency band of interest for satellite communications using reflectarrays. A reflectarray unit cell is simulated, fabricated and measured. Good agreement between the simulation and measurement results is observed.
Keywords :
microstrip antenna arrays; millimetre wave antenna arrays; reflector antennas; satellite communication; Ka-band microstrip reflectarray unit cell; frequency 32 GHz; maximum allowable substrate thickness; phase swing dielectric thickness; satellite communication; waveguide simulator approach; Antenna measurements; Dielectric constant; Microstrip; Microstrip antennas; Phase measurement; Reflector antennas; Substrates; Microstrip patch; reflectarray antenna; unit cell; waveguide simulator;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996434